CImg< T > Struct Template Reference

Class representing an image (up to 4 dimensions wide), each pixel being of type T. More...

Public Types
typedef T *	iterator
	Simple iterator type, to loop through each pixel value of an image instance. More...
typedef T	value_type
	Pixel value type. More...

Public Attributes
const typedef T *	const_iterator
	Simple const iterator type, to loop through each pixel value of a const image instance. More...

Constructors / Destructor / Instance Management
static CImg< T > &	empty ()
	Return a reference to an empty image. More...
static const CImg< T > &	const_empty ()
	Return a reference to an empty image [const version].
	~CImg ()
	Destroy image. More...
	CImg ()
	Construct empty image. More...
	CImg (const unsigned int size_x, const unsigned int size_y=1, const unsigned int size_z=1, const unsigned int size_c=1)
	Construct image with specified size. More...
	CImg (const unsigned int size_x, const unsigned int size_y, const unsigned int size_z, const unsigned int size_c, const T &value)
	Construct image with specified size and initialize pixel values. More...
	CImg (const unsigned int size_x, const unsigned int size_y, const unsigned int size_z, const unsigned int size_c, const int value0, const int value1,...)
	Construct image with specified size and initialize pixel values from a sequence of integers. More...
	CImg (const unsigned int size_x, const unsigned int size_y, const unsigned int size_z, const unsigned int size_c, const double value0, const double value1,...)
	Construct image with specified size and initialize pixel values from a sequence of doubles. More...
	CImg (const unsigned int size_x, const unsigned int size_y, const unsigned int size_z, const unsigned int size_c, const char *const values, const bool repeat_values)
	Construct image with specified size and initialize pixel values from a value string. More...
template<typename t >
	CImg (const t *const values, const unsigned int size_x, const unsigned int size_y=1, const unsigned int size_z=1, const unsigned int size_c=1, const bool is_shared=false)
	Construct image with specified size and initialize pixel values from a memory buffer. More...
	CImg (const T *const values, const unsigned int size_x, const unsigned int size_y=1, const unsigned int size_z=1, const unsigned int size_c=1, const bool is_shared=false)
	Construct image with specified size and initialize pixel values from a memory buffer [specialization].
template<typename t >
	CImg (const t *const values, const unsigned int size_x, const unsigned int size_y, const unsigned int size_z, const unsigned int size_c, const char *const axes_order)
	Construct image from memory buffer with specified size and pixel ordering scheme.
	CImg (const char *const filename)
	Construct image from reading an image file. More...
template<typename t >
	CImg (const CImg< t > &img)
	Construct image copy. More...
	CImg (const CImg< T > &img)
	Construct image copy [specialization].
template<typename t >
	CImg (const CImg< t > &img, const bool is_shared)
	Advanced copy constructor. More...
	CImg (const CImg< T > &img, const bool is_shared)
	Advanced copy constructor [specialization].
template<typename t >
	CImg (const CImg< t > &img, const char *const dimensions)
	Construct image with dimensions borrowed from another image. More...
template<typename t >
	CImg (const CImg< t > &img, const char *const dimensions, const T &value)
	Construct image with dimensions borrowed from another image and initialize pixel values. More...
	CImg (const CImgDisplay &disp)
	Construct image from a display window. More...
CImg< T > &	assign ()
	Construct empty image [in-place version]. More...
CImg< T > &	assign (const unsigned int size_x, const unsigned int size_y=1, const unsigned int size_z=1, const unsigned int size_c=1)
	Construct image with specified size [in-place version]. More...
CImg< T > &	assign (const unsigned int size_x, const unsigned int size_y, const unsigned int size_z, const unsigned int size_c, const T &value)
	Construct image with specified size and initialize pixel values [in-place version]. More...
CImg< T > &	assign (const unsigned int size_x, const unsigned int size_y, const unsigned int size_z, const unsigned int size_c, const int value0, const int value1,...)
	Construct image with specified size and initialize pixel values from a sequence of integers [in-place version]. More...
CImg< T > &	assign (const unsigned int size_x, const unsigned int size_y, const unsigned int size_z, const unsigned int size_c, const double value0, const double value1,...)
	Construct image with specified size and initialize pixel values from a sequence of doubles [in-place version]. More...
CImg< T > &	assign (const unsigned int size_x, const unsigned int size_y, const unsigned int size_z, const unsigned int size_c, const char *const values, const bool repeat_values)
	Construct image with specified size and initialize pixel values from a value string [in-place version]. More...
template<typename t >
CImg< T > &	assign (const t *const values, const unsigned int size_x, const unsigned int size_y=1, const unsigned int size_z=1, const unsigned int size_c=1)
	Construct image with specified size and initialize pixel values from a memory buffer [in-place version]. More...
CImg< T > &	assign (const T *const values, const unsigned int size_x, const unsigned int size_y=1, const unsigned int size_z=1, const unsigned int size_c=1)
	Construct image with specified size and initialize pixel values from a memory buffer [specialization].
template<typename t >
CImg< T > &	assign (const t *const values, const unsigned int size_x, const unsigned int size_y, const unsigned int size_z, const unsigned int size_c, const bool is_shared)
	Construct image with specified size and initialize pixel values from a memory buffer [overloading].
CImg< T > &	assign (const T *const values, const unsigned int size_x, const unsigned int size_y, const unsigned int size_z, const unsigned int size_c, const bool is_shared)
	Construct image with specified size and initialize pixel values from a memory buffer [overloading].
template<typename t >
CImg< T > &	assign (const t *const values, const unsigned int size_x, const unsigned int size_y, const unsigned int size_z, const unsigned int size_c, const char *const axes_order)
	Construct image from memory buffer with specified size and pixel ordering scheme.
CImg< T > &	assign (const char *const filename)
	Construct image from reading an image file [in-place version]. More...
template<typename t >
CImg< T > &	assign (const CImg< t > &img)
	Construct image copy [in-place version]. More...
template<typename t >
CImg< T > &	assign (const CImg< t > &img, const bool is_shared)
	In-place version of the advanced copy constructor. More...
template<typename t >
CImg< T > &	assign (const CImg< t > &img, const char *const dimensions)
	Construct image with dimensions borrowed from another image [in-place version]. More...
template<typename t >
CImg< T > &	assign (const CImg< t > &img, const char *const dimensions, const T &value)
	Construct image with dimensions borrowed from another image and initialize pixel values [in-place version]. More...
CImg< T > &	assign (const CImgDisplay &disp)
	Construct image from a display window [in-place version]. More...
CImg< T > &	clear ()
	Construct empty image [in-place version]. More...
template<typename t >
CImg< t > &	move_to (CImg< t > &img)
	Transfer content of an image instance into another one. More...
CImg< T > &	move_to (CImg< T > &img)
	Transfer content of an image instance into another one [specialization].
template<typename t >
CImgList< t > &	move_to (CImgList< t > &list, const unsigned int pos=~0U)
	Transfer content of an image instance into a new image in an image list. More...
CImg< T > &	swap (CImg< T > &img)
	Swap fields of two image instances. More...

Overloaded Operators
T &	operator() (const unsigned int x, const unsigned int y=0, const unsigned int z=0, const unsigned int c=0)
	Access to a pixel value. More...
const T &	operator() (const unsigned int x, const unsigned int y=0, const unsigned int z=0, const unsigned int c=0) const
	Access to a pixel value [const version].
T &	operator() (const unsigned int x, const unsigned int y, const unsigned int z, const unsigned int c, const ulongT wh, const ulongT whd=0)
	Access to a pixel value. More...
const T &	operator() (const unsigned int x, const unsigned int y, const unsigned int z, const unsigned int c, const ulongT wh, const ulongT whd=0) const
	Access to a pixel value [const version].
	operator T* ()
	Implicitly cast an image into a T*. More...
	operator const T * () const
	Implicitly cast an image into a T* [const version].
CImg< T > &	operator= (const T &value)
	Assign a value to all image pixels. More...
CImg< T > &	operator= (const char *const expression)
	Assign pixels values from a specified expression. More...
template<typename t >
CImg< T > &	operator= (const CImg< t > &img)
	Copy an image into the current image instance. More...
CImg< T > &	operator= (const CImg< T > &img)
	Copy an image into the current image instance [specialization].
CImg< T > &	operator= (const CImgDisplay &disp)
	Copy the content of a display window to the current image instance. More...
template<typename t >
CImg< T > &	operator+= (const t value)
	In-place addition operator. More...
CImg< T > &	operator+= (const char *const expression)
	In-place addition operator. More...
template<typename t >
CImg< T > &	operator+= (const CImg< t > &img)
	In-place addition operator. More...
CImg< T > &	operator++ ()
	In-place increment operator (prefix). More...
CImg< T >	operator++ (int)
	In-place increment operator (postfix). More...
CImg< T >	operator+ () const
	Return a non-shared copy of the image instance. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	operator+ (const t value) const
	Addition operator. More...
CImg< Tfloat >	operator+ (const char *const expression) const
	Addition operator. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	operator+ (const CImg< t > &img) const
	Addition operator. More...
template<typename t >
CImg< T > &	operator-= (const t value)
	In-place subtraction operator. More...
CImg< T > &	operator-= (const char *const expression)
	In-place subtraction operator. More...
template<typename t >
CImg< T > &	operator-= (const CImg< t > &img)
	In-place subtraction operator. More...
CImg< T > &	operator-- ()
	In-place decrement operator (prefix). More...
CImg< T >	operator-- (int)
	In-place decrement operator (postfix). More...
CImg< T >	operator- () const
	Replace each pixel by its opposite value. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	operator- (const t value) const
	Subtraction operator. More...
CImg< Tfloat >	operator- (const char *const expression) const
	Subtraction operator. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	operator- (const CImg< t > &img) const
	Subtraction operator. More...
template<typename t >
CImg< T > &	operator*= (const t value)
	In-place multiplication operator. More...
CImg< T > &	operator*= (const char *const expression)
	In-place multiplication operator. More...
template<typename t >
CImg< T > &	operator*= (const CImg< t > &img)
	In-place multiplication operator. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	operator* (const t value) const
	Multiplication operator. More...
CImg< Tfloat >	operator* (const char *const expression) const
	Multiplication operator. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	operator* (const CImg< t > &img) const
	Multiplication operator. More...
template<typename t >
CImg< T > &	operator/= (const t value)
	In-place division operator. More...
CImg< T > &	operator/= (const char *const expression)
	In-place division operator. More...
template<typename t >
CImg< T > &	operator/= (const CImg< t > &img)
	In-place division operator. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	operator/ (const t value) const
	Division operator. More...
CImg< Tfloat >	operator/ (const char *const expression) const
	Division operator. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	operator/ (const CImg< t > &img) const
	Division operator. More...
template<typename t >
CImg< T > &	operator%= (const t value)
	In-place modulo operator. More...
CImg< T > &	operator%= (const char *const expression)
	In-place modulo operator. More...
template<typename t >
CImg< T > &	operator%= (const CImg< t > &img)
	In-place modulo operator. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	operator% (const t value) const
	Modulo operator. More...
CImg< Tfloat >	operator% (const char *const expression) const
	Modulo operator. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	operator% (const CImg< t > &img) const
	Modulo operator. More...
template<typename t >
CImg< T > &	operator&= (const t value)
	In-place bitwise AND operator. More...
CImg< T > &	operator&= (const char *const expression)
	In-place bitwise AND operator. More...
template<typename t >
CImg< T > &	operator&= (const CImg< t > &img)
	In-place bitwise AND operator. More...
template<typename t >
CImg< T >	operator& (const t value) const
	Bitwise AND operator. More...
CImg< T >	operator& (const char *const expression) const
	Bitwise AND operator. More...
template<typename t >
CImg< T >	operator& (const CImg< t > &img) const
	Bitwise AND operator. More...
template<typename t >
CImg< T > &	operator|= (const t value)
	In-place bitwise OR operator. More...
CImg< T > &	operator|= (const char *const expression)
	In-place bitwise OR operator. More...
template<typename t >
CImg< T > &	operator|= (const CImg< t > &img)
	In-place bitwise OR operator. More...
template<typename t >
CImg< T >	operator| (const t value) const
	Bitwise OR operator. More...
CImg< T >	operator| (const char *const expression) const
	Bitwise OR operator. More...
template<typename t >
CImg< T >	operator| (const CImg< t > &img) const
	Bitwise OR operator. More...
template<typename t >
CImg< T > &	operator^= (const t value)
	In-place bitwise XOR operator. More...
CImg< T > &	operator^= (const char *const expression)
	In-place bitwise XOR operator. More...
template<typename t >
CImg< T > &	operator^= (const CImg< t > &img)
	In-place bitwise XOR operator. More...
template<typename t >
CImg< T >	operator^ (const t value) const
	Bitwise XOR operator. More...
CImg< T >	operator^ (const char *const expression) const
	Bitwise XOR operator. More...
template<typename t >
CImg< T >	operator^ (const CImg< t > &img) const
	Bitwise XOR operator. More...
template<typename t >
CImg< T > &	operator<<= (const t value)
	In-place bitwise left shift operator. More...
CImg< T > &	operator<<= (const char *const expression)
	In-place bitwise left shift operator. More...
template<typename t >
CImg< T > &	operator<<= (const CImg< t > &img)
	In-place bitwise left shift operator. More...
template<typename t >
CImg< T >	operator<< (const t value) const
	Bitwise left shift operator. More...
CImg< T >	operator<< (const char *const expression) const
	Bitwise left shift operator. More...
template<typename t >
CImg< T >	operator<< (const CImg< t > &img) const
	Bitwise left shift operator. More...
template<typename t >
CImg< T > &	operator>>= (const t value)
	In-place bitwise right shift operator. More...
CImg< T > &	operator>>= (const char *const expression)
	In-place bitwise right shift operator. More...
template<typename t >
CImg< T > &	operator>>= (const CImg< t > &img)
	In-place bitwise right shift operator. More...
template<typename t >
CImg< T >	operator>> (const t value) const
	Bitwise right shift operator. More...
CImg< T >	operator>> (const char *const expression) const
	Bitwise right shift operator. More...
template<typename t >
CImg< T >	operator>> (const CImg< t > &img) const
	Bitwise right shift operator. More...
CImg< T >	operator~ () const
	Bitwise inversion operator. More...
template<typename t >
bool	operator== (const t value) const
	Test if all pixels of an image have the same value. More...
bool	operator== (const char *const expression) const
	Test if all pixel values of an image follow a specified expression. More...
template<typename t >
bool	operator== (const CImg< t > &img) const
	Test if two images have the same size and values. More...
template<typename t >
bool	operator!= (const t value) const
	Test if pixels of an image are all different from a value. More...
bool	operator!= (const char *const expression) const
	Test if all pixel values of an image are different from a specified expression. More...
template<typename t >
bool	operator!= (const CImg< t > &img) const
	Test if two images have different sizes or values. More...
template<typename t >
CImgList< typename cimg::superset< T, t >::type >	operator, (const CImg< t > &img) const
	Construct an image list from two images. More...
template<typename t >
CImgList< typename cimg::superset< T, t >::type >	operator, (const CImgList< t > &list) const
	Construct an image list from image instance and an input image list. More...
CImgList< T >	operator< (const char axis) const
	Split image along specified axis. More...

Instance Characteristics
static const char *	pixel_type ()
	Return the type of image pixel values as a C string. More...
int	width () const
	Return the number of image columns. More...
int	height () const
	Return the number of image rows. More...
int	depth () const
	Return the number of image slices. More...
int	spectrum () const
	Return the number of image channels. More...
ulongT	size () const
	Return the total number of pixel values. More...
T *	data ()
	Return a pointer to the first pixel value. More...
const T *	data () const
	Return a pointer to the first pixel value [const version].
T *	data (const unsigned int x, const unsigned int y=0, const unsigned int z=0, const unsigned int c=0)
	Return a pointer to a located pixel value. More...
const T *	data (const unsigned int x, const unsigned int y=0, const unsigned int z=0, const unsigned int c=0) const
	Return a pointer to a located pixel value [const version].
longT	offset (const int x, const int y=0, const int z=0, const int c=0) const
	Return the offset to a located pixel value, with respect to the beginning of the pixel buffer. More...
iterator	begin ()
	Return a CImg<T>::iterator pointing to the first pixel value. More...
const_iterator	begin () const
	Return a CImg<T>::iterator pointing to the first value of the pixel buffer [const version].
iterator	end ()
	Return a CImg<T>::iterator pointing next to the last pixel value. More...
const_iterator	end () const
	Return a CImg<T>::iterator pointing next to the last pixel value [const version].
T &	front ()
	Return a reference to the first pixel value. More...
const T &	front () const
	Return a reference to the first pixel value [const version].
T &	back ()
	Return a reference to the last pixel value. More...
const T &	back () const
	Return a reference to the last pixel value [const version].
T &	at (const int offset, const T &out_value)
	Access to a pixel value at a specified offset, using Dirichlet boundary conditions. More...
T	at (const int offset, const T &out_value) const
	Access to a pixel value at a specified offset, using Dirichlet boundary conditions [const version].
T &	at (const int offset)
	Access to a pixel value at a specified offset, using Neumann boundary conditions. More...
const T &	at (const int offset) const
	Access to a pixel value at a specified offset, using Neumann boundary conditions [const version].
T &	atX (const int x, const int y, const int z, const int c, const T &out_value)
	Access to a pixel value, using Dirichlet boundary conditions for the X-coordinate. More...
T	atX (const int x, const int y, const int z, const int c, const T &out_value) const
	Access to a pixel value, using Dirichlet boundary conditions for the X-coordinate [const version].
T &	atX (const int x, const int y=0, const int z=0, const int c=0)
	Access to a pixel value, using Neumann boundary conditions for the X-coordinate. More...
const T &	atX (const int x, const int y=0, const int z=0, const int c=0) const
	Access to a pixel value, using Neumann boundary conditions for the X-coordinate [const version].
T &	atXY (const int x, const int y, const int z, const int c, const T &out_value)
	Access to a pixel value, using Dirichlet boundary conditions for the X and Y-coordinates. More...
T	atXY (const int x, const int y, const int z, const int c, const T &out_value) const
	Access to a pixel value, using Dirichlet boundary conditions for the X and Y coordinates [const version].
T &	atXY (const int x, const int y, const int z=0, const int c=0)
	Access to a pixel value, using Neumann boundary conditions for the X and Y-coordinates. More...
const T &	atXY (const int x, const int y, const int z=0, const int c=0) const
	Access to a pixel value, using Neumann boundary conditions for the X and Y-coordinates [const version].
T &	atXYZ (const int x, const int y, const int z, const int c, const T &out_value)
	Access to a pixel value, using Dirichlet boundary conditions for the X,Y and Z-coordinates. More...
T	atXYZ (const int x, const int y, const int z, const int c, const T &out_value) const
	Access to a pixel value, using Dirichlet boundary conditions for the X,Y and Z-coordinates [const version].
T &	atXYZ (const int x, const int y, const int z, const int c=0)
	Access to a pixel value, using Neumann boundary conditions for the X,Y and Z-coordinates. More...
const T &	atXYZ (const int x, const int y, const int z, const int c=0) const
	Access to a pixel value, using Neumann boundary conditions for the X,Y and Z-coordinates [const version].
T &	atXYZC (const int x, const int y, const int z, const int c, const T &out_value)
	Access to a pixel value, using Dirichlet boundary conditions. More...
T	atXYZC (const int x, const int y, const int z, const int c, const T &out_value) const
	Access to a pixel value, using Dirichlet boundary conditions [const version].
T &	atXYZC (const int x, const int y, const int z, const int c)
	Access to a pixel value, using Neumann boundary conditions. More...
const T &	atXYZC (const int x, const int y, const int z, const int c) const
	Access to a pixel value, using Neumann boundary conditions [const version].
Tfloat	linear_atX (const float fx, const int y, const int z, const int c, const T &out_value) const
	Return pixel value, using linear interpolation and Dirichlet boundary conditions for the X-coordinate. More...
Tfloat	linear_atX (const float fx, const int y=0, const int z=0, const int c=0) const
	Return pixel value, using linear interpolation and Neumann boundary conditions for the X-coordinate. More...
Tfloat	linear_atX_p (const float fx, const int y=0, const int z=0, const int c=0) const
	Return pixel value, using linear interpolation and periodic boundary conditions for the X-coordinate.
Tfloat	linear_atXY (const float fx, const float fy, const int z, const int c, const T &out_value) const
	Return pixel value, using linear interpolation and Dirichlet boundary conditions for the X and Y-coordinates. More...
Tfloat	linear_atXY (const float fx, const float fy, const int z=0, const int c=0) const
	Return pixel value, using linear interpolation and Neumann boundary conditions for the X and Y-coordinates. More...
Tfloat	linear_atXY_p (const float fx, const float fy, const int z=0, const int c=0) const
	Return pixel value, using linear interpolation and periodic boundary conditions for the X and Y-coordinates.
Tfloat	linear_atXYZ (const float fx, const float fy, const float fz, const int c, const T &out_value) const
	Return pixel value, using linear interpolation and Dirichlet boundary conditions for the X,Y and Z-coordinates. More...
Tfloat	linear_atXYZ (const float fx, const float fy=0, const float fz=0, const int c=0) const
	Return pixel value, using linear interpolation and Neumann boundary conditions for the X,Y and Z-coordinates. More...
Tfloat	linear_atXYZ_p (const float fx, const float fy=0, const float fz=0, const int c=0) const
	Return pixel value, using linear interpolation and periodic boundary conditions for the X,Y and Z-coordinates.
Tfloat	linear_atXYZC (const float fx, const float fy, const float fz, const float fc, const T &out_value) const
	Return pixel value, using linear interpolation and Dirichlet boundary conditions for all X,Y,Z,C-coordinates. More...
Tfloat	linear_atXYZC (const float fx, const float fy=0, const float fz=0, const float fc=0) const
	Return pixel value, using linear interpolation and Neumann boundary conditions for all X,Y,Z and C-coordinates. More...
Tfloat	linear_atXYZC_p (const float fx, const float fy=0, const float fz=0, const float fc=0) const
	Return pixel value, using linear interpolation and periodic boundary conditions for all X,Y,Z and C-coordinates.
Tfloat	cubic_atX (const float fx, const int y, const int z, const int c, const T &out_value) const
	Return pixel value, using cubic interpolation and Dirichlet boundary conditions for the X-coordinate. More...
T	cubic_atX_c (const float fx, const int y, const int z, const int c, const T &out_value) const
	Return clamped pixel value, using cubic interpolation and Dirichlet boundary conditions for the X-coordinate. More...
Tfloat	cubic_atX (const float fx, const int y=0, const int z=0, const int c=0) const
	Return pixel value, using cubic interpolation and Neumann boundary conditions for the X-coordinate. More...
T	cubic_atX_c (const float fx, const int y, const int z, const int c) const
	Return clamped pixel value, using cubic interpolation and Neumann boundary conditions for the X-coordinate. More...
Tfloat	cubic_atX_p (const float fx, const int y=0, const int z=0, const int c=0) const
	Return pixel value, using cubic interpolation and periodic boundary conditions for the X-coordinate.
T	cubic_atX_pc (const float fx, const int y, const int z, const int c) const
Tfloat	cubic_atXY (const float fx, const float fy, const int z, const int c, const T &out_value) const
	Return pixel value, using cubic interpolation and Dirichlet boundary conditions for the X and Y-coordinates. More...
T	cubic_atXY_c (const float fx, const float fy, const int z, const int c, const T &out_value) const
	Return clamped pixel value, using cubic interpolation and Dirichlet boundary conditions for the X,Y-coordinates. More...
Tfloat	cubic_atXY (const float fx, const float fy, const int z=0, const int c=0) const
	Return pixel value, using cubic interpolation and Neumann boundary conditions for the X and Y-coordinates. More...
T	cubic_atXY_c (const float fx, const float fy, const int z, const int c) const
	Return clamped pixel value, using cubic interpolation and Neumann boundary conditions for the X,Y-coordinates. More...
Tfloat	cubic_atXY_p (const float fx, const float fy, const int z=0, const int c=0) const
	Return pixel value, using cubic interpolation and periodic boundary conditions for the X and Y-coordinates.
T	cubic_atXY_pc (const float fx, const float fy, const int z, const int c) const
Tfloat	cubic_atXYZ (const float fx, const float fy, const float fz, const int c, const T &out_value) const
	Return pixel value, using cubic interpolation and Dirichlet boundary conditions for the X,Y and Z-coordinates. More...
T	cubic_atXYZ_c (const float fx, const float fy, const float fz, const int c, const T &out_value) const
	Return clamped pixel value, using cubic interpolation and Dirichlet boundary conditions for the XYZ-coordinates. More...
Tfloat	cubic_atXYZ (const float fx, const float fy, const float fz, const int c=0) const
	Return pixel value, using cubic interpolation and Neumann boundary conditions for the X,Y and Z-coordinates. More...
T	cubic_atXYZ_c (const float fx, const float fy, const float fz, const int c) const
	Return clamped pixel value, using cubic interpolation and Neumann boundary conditions for the XYZ-coordinates. More...
Tfloat	cubic_atXYZ_p (const float fx, const float fy, const float fz, const int c=0) const
	Return pixel value, using cubic interpolation and Neumann boundary conditions for the X,Y and Z-coordinates. More...
T	cubic_atXYZ_pc (const float fx, const float fy, const float fz, const int c) const
CImg< T > &	set_linear_atX (const T &value, const float fx, const int y=0, const int z=0, const int c=0, const bool is_added=false)
	Set pixel value, using linear interpolation for the X-coordinates. More...
CImg< T > &	set_linear_atXY (const T &value, const float fx, const float fy=0, const int z=0, const int c=0, const bool is_added=false)
	Set pixel value, using linear interpolation for the X and Y-coordinates. More...
CImg< T > &	set_linear_atXYZ (const T &value, const float fx, const float fy=0, const float fz=0, const int c=0, const bool is_added=false)
	Set pixel value, using linear interpolation for the X,Y and Z-coordinates. More...
CImg< charT >	value_string (const char separator=',', const unsigned int max_size=0, const char *const format=0) const
	Return a C-string containing a list of all values of the image instance. More...

Instance Checking
bool	is_shared () const
	Test shared state of the pixel buffer. More...
bool	is_empty () const
	Test if image instance is empty. More...
bool	is_inf () const
	Test if image instance contains a 'inf' value. More...
bool	is_nan () const
	Test if image instance contains a NaN value. More...
bool	is_sameX (const unsigned int size_x) const
	Test if image width is equal to specified value.
template<typename t >
bool	is_sameX (const CImg< t > &img) const
	Test if image width is equal to specified value.
bool	is_sameX (const CImgDisplay &disp) const
	Test if image width is equal to specified value.
bool	is_sameY (const unsigned int size_y) const
	Test if image height is equal to specified value.
template<typename t >
bool	is_sameY (const CImg< t > &img) const
	Test if image height is equal to specified value.
bool	is_sameY (const CImgDisplay &disp) const
	Test if image height is equal to specified value.
bool	is_sameZ (const unsigned int size_z) const
	Test if image depth is equal to specified value.
template<typename t >
bool	is_sameZ (const CImg< t > &img) const
	Test if image depth is equal to specified value.
bool	is_sameC (const unsigned int size_c) const
	Test if image spectrum is equal to specified value.
template<typename t >
bool	is_sameC (const CImg< t > &img) const
	Test if image spectrum is equal to specified value.
bool	is_sameXY (const unsigned int size_x, const unsigned int size_y) const
	Test if image width and height are equal to specified values. More...
template<typename t >
bool	is_sameXY (const CImg< t > &img) const
	Test if image width and height are the same as that of another image. More...
bool	is_sameXY (const CImgDisplay &disp) const
	Test if image width and height are the same as that of an existing display window. More...
bool	is_sameXZ (const unsigned int size_x, const unsigned int size_z) const
	Test if image width and depth are equal to specified values. More...
template<typename t >
bool	is_sameXZ (const CImg< t > &img) const
	Test if image width and depth are the same as that of another image. More...
bool	is_sameXC (const unsigned int size_x, const unsigned int size_c) const
	Test if image width and spectrum are equal to specified values. More...
template<typename t >
bool	is_sameXC (const CImg< t > &img) const
	Test if image width and spectrum are the same as that of another image. More...
bool	is_sameYZ (const unsigned int size_y, const unsigned int size_z) const
	Test if image height and depth are equal to specified values. More...
template<typename t >
bool	is_sameYZ (const CImg< t > &img) const
	Test if image height and depth are the same as that of another image. More...
bool	is_sameYC (const unsigned int size_y, const unsigned int size_c) const
	Test if image height and spectrum are equal to specified values. More...
template<typename t >
bool	is_sameYC (const CImg< t > &img) const
	Test if image height and spectrum are the same as that of another image. More...
bool	is_sameZC (const unsigned int size_z, const unsigned int size_c) const
	Test if image depth and spectrum are equal to specified values. More...
template<typename t >
bool	is_sameZC (const CImg< t > &img) const
	Test if image depth and spectrum are the same as that of another image. More...
bool	is_sameXYZ (const unsigned int size_x, const unsigned int size_y, const unsigned int size_z) const
	Test if image width, height and depth are equal to specified values. More...
template<typename t >
bool	is_sameXYZ (const CImg< t > &img) const
	Test if image width, height and depth are the same as that of another image. More...
bool	is_sameXYC (const unsigned int size_x, const unsigned int size_y, const unsigned int size_c) const
	Test if image width, height and spectrum are equal to specified values. More...
template<typename t >
bool	is_sameXYC (const CImg< t > &img) const
	Test if image width, height and spectrum are the same as that of another image. More...
bool	is_sameXZC (const unsigned int size_x, const unsigned int size_z, const unsigned int size_c) const
	Test if image width, depth and spectrum are equal to specified values. More...
template<typename t >
bool	is_sameXZC (const CImg< t > &img) const
	Test if image width, depth and spectrum are the same as that of another image. More...
bool	is_sameYZC (const unsigned int size_y, const unsigned int size_z, const unsigned int size_c) const
	Test if image height, depth and spectrum are equal to specified values. More...
template<typename t >
bool	is_sameYZC (const CImg< t > &img) const
	Test if image height, depth and spectrum are the same as that of another image. More...
bool	is_sameXYZC (const unsigned int size_x, const unsigned int size_y, const unsigned int size_z, const unsigned int size_c) const
	Test if image width, height, depth and spectrum are equal to specified values. More...
template<typename t >
bool	is_sameXYZC (const CImg< t > &img) const
	Test if image width, height, depth and spectrum are the same as that of another image. More...
bool	containsXYZC (const int x, const int y=0, const int z=0, const int c=0) const
	Test if specified coordinates are inside image bounds. More...
template<typename t >
bool	contains (const T &pixel, t &x, t &y, t &z, t &c) const
	Test if pixel value is inside image bounds and get its X,Y,Z and C-coordinates. More...
template<typename t >
bool	contains (const T &pixel, t &x, t &y, t &z) const
	Test if pixel value is inside image bounds and get its X,Y and Z-coordinates. More...
template<typename t >
bool	contains (const T &pixel, t &x, t &y) const
	Test if pixel value is inside image bounds and get its X and Y-coordinates. More...
template<typename t >
bool	contains (const T &pixel, t &x) const
	Test if pixel value is inside image bounds and get its X-coordinate. More...
bool	contains (const T &pixel) const
	Test if pixel value is inside image bounds. More...
template<typename t >
bool	is_overlapped (const CImg< t > &img) const
	Test if pixel buffers of instance and input images overlap. More...
template<typename tp , typename tc , typename to >
bool	is_object3d (const CImgList< tp > &primitives, const CImgList< tc > &colors, const to &opacities, const bool full_check=true, char *const error_message=0) const
	Test if the set {*this,primitives,colors,opacities} defines a valid 3D object. More...
bool	is_CImg3d (const bool full_check=true, char *const error_message=0) const
	Test if image instance represents a valid serialization of a 3D object. More...

Mathematical Functions
CImg< T > &	sqr ()
	Compute the square value of each pixel value. More...
CImg< Tfloat >	get_sqr () const
CImg< T > &	sqrt ()
	Compute the square root of each pixel value. More...
CImg< Tfloat >	get_sqrt () const
CImg< T > &	exp ()
	Compute the exponential of each pixel value. More...
CImg< Tfloat >	get_exp () const
CImg< T > &	erf ()
	Compute the error function of each pixel value. More...
CImg< Tfloat >	get_erf () const
CImg< T > &	log ()
	Compute the logarithm of each pixel value. More...
CImg< Tfloat >	get_log () const
CImg< T > &	log2 ()
	Compute the base-2 logarithm of each pixel value. More...
CImg< Tfloat >	get_log2 () const
CImg< T > &	log10 ()
	Compute the base-10 logarithm of each pixel value. More...
CImg< Tfloat >	get_log10 () const
CImg< T > &	abs ()
	Compute the absolute value of each pixel value. More...
CImg< Tfloat >	get_abs () const
CImg< T > &	sign ()
	Compute the sign of each pixel value. More...
CImg< Tfloat >	get_sign () const
CImg< T > &	cos ()
	Compute the cosine of each pixel value. More...
CImg< Tfloat >	get_cos () const
CImg< T > &	sin ()
	Compute the sine of each pixel value. More...
CImg< Tfloat >	get_sin () const
CImg< T > &	sinc ()
	Compute the sinc of each pixel value. More...
CImg< Tfloat >	get_sinc () const
CImg< T > &	tan ()
	Compute the tangent of each pixel value. More...
CImg< Tfloat >	get_tan () const
CImg< T > &	cosh ()
	Compute the hyperbolic cosine of each pixel value. More...
CImg< Tfloat >	get_cosh () const
CImg< T > &	sinh ()
	Compute the hyperbolic sine of each pixel value. More...
CImg< Tfloat >	get_sinh () const
CImg< T > &	tanh ()
	Compute the hyperbolic tangent of each pixel value. More...
CImg< Tfloat >	get_tanh () const
CImg< T > &	acos ()
	Compute the arccosine of each pixel value. More...
CImg< Tfloat >	get_acos () const
CImg< T > &	asin ()
	Compute the arcsine of each pixel value. More...
CImg< Tfloat >	get_asin () const
CImg< T > &	atan ()
	Compute the arctangent of each pixel value. More...
CImg< Tfloat >	get_atan () const
template<typename t >
CImg< T > &	atan2 (const CImg< t > &img)
	Compute the arctangent2 of each pixel value. More...
template<typename t >
CImg< Tfloat >	get_atan2 (const CImg< t > &img) const
	Compute the arctangent2 of each pixel value [new-instance version].
CImg< T > &	acosh ()
	Compute the hyperbolic arccosine of each pixel value. More...
CImg< Tfloat >	get_acosh () const
CImg< T > &	asinh ()
	Compute the hyperbolic arcsine of each pixel value. More...
CImg< Tfloat >	get_asinh () const
CImg< T > &	atanh ()
	Compute the hyperbolic arctangent of each pixel value. More...
CImg< Tfloat >	get_atanh () const
template<typename t >
CImg< T > &	mul (const CImg< t > &img)
	In-place pointwise multiplication. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	get_mul (const CImg< t > &img) const
	In-place pointwise multiplication [new-instance version].
template<typename t >
CImg< T > &	div (const CImg< t > &img)
	In-place pointwise division. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	get_div (const CImg< t > &img) const
	In-place pointwise division [new-instance version].
CImg< T > &	pow (const double p)
	Raise each pixel value to a specified power. More...
CImg< Tfloat >	get_pow (const double p) const
	Raise each pixel value to a specified power [new-instance version].
CImg< T > &	pow (const char *const expression)
	Raise each pixel value to a power, specified from an expression. More...
CImg< Tfloat >	get_pow (const char *const expression) const
	Raise each pixel value to a power, specified from an expression [new-instance version].
template<typename t >
CImg< T > &	pow (const CImg< t > &img)
	Raise each pixel value to a power, pointwisely specified from another image. More...
template<typename t >
CImg< Tfloat >	get_pow (const CImg< t > &img) const
	Raise each pixel value to a power, pointwisely specified from another image [new-instance version].
CImg< T > &	rol (const unsigned int n=1)
	Compute the bitwise left rotation of each pixel value. More...
CImg< T >	get_rol (const unsigned int n=1) const
	Compute the bitwise left rotation of each pixel value [new-instance version].
CImg< T > &	rol (const char *const expression)
	Compute the bitwise left rotation of each pixel value. More...
CImg< T >	get_rol (const char *const expression) const
	Compute the bitwise left rotation of each pixel value [new-instance version].
template<typename t >
CImg< T > &	rol (const CImg< t > &img)
	Compute the bitwise left rotation of each pixel value. More...
template<typename t >
CImg< T >	get_rol (const CImg< t > &img) const
	Compute the bitwise left rotation of each pixel value [new-instance version].
CImg< T > &	ror (const unsigned int n=1)
	Compute the bitwise right rotation of each pixel value. More...
CImg< T >	get_ror (const unsigned int n=1) const
	Compute the bitwise right rotation of each pixel value [new-instance version].
CImg< T > &	ror (const char *const expression)
	Compute the bitwise right rotation of each pixel value. More...
CImg< T >	get_ror (const char *const expression) const
	Compute the bitwise right rotation of each pixel value [new-instance version].
template<typename t >
CImg< T > &	ror (const CImg< t > &img)
	Compute the bitwise right rotation of each pixel value. More...
template<typename t >
CImg< T >	get_ror (const CImg< t > &img) const
	Compute the bitwise right rotation of each pixel value [new-instance version].
CImg< T > &	min (const T &value)
	Pointwise min operator between instance image and a value. More...
CImg< T >	get_min (const T &value) const
	Pointwise min operator between instance image and a value [new-instance version].
template<typename t >
CImg< T > &	min (const CImg< t > &img)
	Pointwise min operator between two images. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	get_min (const CImg< t > &img) const
	Pointwise min operator between two images [new-instance version].
CImg< T > &	min (const char *const expression)
	Pointwise min operator between an image and an expression. More...
CImg< Tfloat >	get_min (const char *const expression) const
	Pointwise min operator between an image and an expression [new-instance version].
CImg< T > &	max (const T &value)
	Pointwise max operator between instance image and a value. More...
CImg< T >	get_max (const T &value) const
	Pointwise max operator between instance image and a value [new-instance version].
template<typename t >
CImg< T > &	max (const CImg< t > &img)
	Pointwise max operator between two images. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	get_max (const CImg< t > &img) const
	Pointwise max operator between two images [new-instance version].
CImg< T > &	max (const char *const expression)
	Pointwise max operator between an image and an expression. More...
CImg< Tfloat >	get_max (const char *const expression) const
	Pointwise max operator between an image and an expression [new-instance version].
CImg< T > &	minabs (const T &value)
	Pointwise minabs operator between instance image and a value. More...
CImg< T >	get_minabs (const T &value) const
	Pointwise minabs operator between instance image and a value [new-instance version].
template<typename t >
CImg< T > &	minabs (const CImg< t > &img)
	Pointwise minabs operator between two images. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	get_minabs (const CImg< t > &img) const
	Pointwise minabs operator between two images [new-instance version].
CImg< T > &	minabs (const char *const expression)
	Pointwise minabs operator between an image and an expression. More...
CImg< Tfloat >	get_minabs (const char *const expression) const
	Pointwise minabs operator between an image and an expression [new-instance version].
CImg< T > &	maxabs (const T &value)
	Pointwise maxabs operator between instance image and a value. More...
CImg< T >	get_maxabs (const T &value) const
	Pointwise maxabs operator between instance image and a value [new-instance version].
template<typename t >
CImg< T > &	maxabs (const CImg< t > &img)
	Pointwise maxabs operator between two images. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	get_maxabs (const CImg< t > &img) const
	Pointwise maxabs operator between two images [new-instance version].
CImg< T > &	maxabs (const char *const expression)
	Pointwise maxabs operator between an image and an expression. More...
CImg< Tfloat >	get_maxabs (const char *const expression) const
	Pointwise maxabs operator between an image and an expression [new-instance version].
T &	min ()
	Return a reference to the minimum pixel value.
const T &	min () const
	Return a reference to the minimum pixel value [const version].
T &	minabs ()
	Return a reference to the minimum pixel value in absolute value.
const T &	minabs () const
	Return a reference to the minimum pixel value in absolute value [const version].
T &	max ()
	Return a reference to the maximum pixel value.
const T &	max () const
	Return a reference to the maximum pixel value [const version].
T &	maxabs ()
	Return a reference to the maximum pixel value in absolute value.
const T &	maxabs () const
	Return a reference to the maximum pixel value in absolute value [const version].
template<typename t >
T &	min_max (t &max_val)
	Return a reference to the minimum pixel value as well as the maximum pixel value. More...
template<typename t >
const T &	min_max (t &max_val) const
	Return a reference to the minimum pixel value as well as the maximum pixel value [const version].
template<typename t >
T &	max_min (t &min_val)
	Return a reference to the maximum pixel value as well as the minimum pixel value. More...
template<typename t >
const T &	max_min (t &min_val) const
	Return a reference to the maximum pixel value as well as the minimum pixel value [const version].
T	kth_smallest (const ulongT k) const
	Return the kth smallest pixel value. More...
T	median () const
	Return the median pixel value.
double	product () const
	Return the product of all the pixel values.
double	sum () const
	Return the sum of all the pixel values.
double	mean () const
	Return the average pixel value.
double	variance (const unsigned int variance_method=1) const
	Return the variance of the pixel values. More...
template<typename t >
double	variance_mean (const unsigned int variance_method, t &mean) const
	Return the variance as well as the average of the pixel values. More...
double	variance_noise (const unsigned int variance_method=2) const
	Return estimated variance of the noise. More...
template<typename t >
double	MSE (const CImg< t > &img) const
	Compute the MSE (Mean-Squared Error) between two images. More...
template<typename t >
double	PSNR (const CImg< t > &img, const double max_value=255) const
	Compute the PSNR (Peak Signal-to-Noise Ratio) between two images. More...
double	eval (const char *const expression, const double x=0, const double y=0, const double z=0, const double c=0, CImgList< T > *const list_images=0)
	Evaluate math formula. More...
double	eval (const char *const expression, const double x=0, const double y=0, const double z=0, const double c=0, CImgList< T > *const list_images=0) const
	Evaluate math formula [const version].
template<typename t >
void	eval (CImg< t > &output, const char *const expression, const double x=0, const double y=0, const double z=0, const double c=0, CImgList< T > *const list_images=0)
	Evaluate math formula. More...
template<typename t >
void	eval (CImg< t > &output, const char *const expression, const double x=0, const double y=0, const double z=0, const double c=0, CImgList< T > *const list_images=0) const
	Evaluate math formula [const version].
template<typename t >
CImg< doubleT >	eval (const char *const expression, const CImg< t > &xyzc, CImgList< T > *const list_images=0)
	Evaluate math formula on a set of variables. More...
template<typename t >
CImg< doubleT >	eval (const char *const expression, const CImg< t > &xyzc, CImgList< T > *const list_images=0) const
	Evaluate math formula on a set of variables [const version].
CImg< Tdouble >	get_stats (const unsigned int variance_method=1) const
	Compute statistics vector from the pixel values. More...
CImg< T > &	stats (const unsigned int variance_method=1)
	Compute statistics vector from the pixel values [in-place version].

Vector / Matrix Operations
template<typename tf , typename t >
static CImg< T >	dijkstra (const tf &distance, const unsigned int nb_nodes, const unsigned int starting_node, const unsigned int ending_node, CImg< t > &previous_node)
	Compute minimal path in a graph, using the Dijkstra algorithm. More...
template<typename tf , typename t >
static CImg< T >	dijkstra (const tf &distance, const unsigned int nb_nodes, const unsigned int starting_node, const unsigned int ending_node=~0U)
	Return minimal path in a graph, using the Dijkstra algorithm.
static CImg< T >	string (const char *const str, const bool is_last_zero=true, const bool is_shared=false)
	Return an image containing the character codes of specified string. More...
static CImg< T >	row_vector (const T &a0)
	Return a 1x1 image containing specified value. More...
static CImg< T >	row_vector (const T &a0, const T &a1)
	Return a 2x1 image containing specified values. More...
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2)
	Return a 3x1 image containing specified values. More...
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2, const T &a3)
	Return a 4x1 image containing specified values. More...
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4)
	Return a 5x1 image containing specified values.
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5)
	Return a 6x1 image containing specified values.
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6)
	Return a 7x1 image containing specified values.
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7)
	Return a 8x1 image containing specified values.
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8)
	Return a 9x1 image containing specified values.
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9)
	Return a 10x1 image containing specified values.
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10)
	Return a 11x1 image containing specified values.
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11)
	Return a 12x1 image containing specified values.
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12)
	Return a 13x1 image containing specified values.
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12, const T &a13)
	Return a 14x1 image containing specified values.
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12, const T &a13, const T &a14)
	Return a 15x1 image containing specified values.
static CImg< T >	row_vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12, const T &a13, const T &a14, const T &a15)
	Return a 16x1 image containing specified values.
static CImg< T >	vector (const T &a0)
	Return a 1x1 image containing specified value. More...
static CImg< T >	vector (const T &a0, const T &a1)
	Return a 1x2 image containing specified values. More...
static CImg< T >	vector (const T &a0, const T &a1, const T &a2)
	Return a 1x3 image containing specified values. More...
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3)
	Return a 1x4 image containing specified values. More...
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4)
	Return a 1x5 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5)
	Return a 1x6 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6)
	Return a 1x7 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7)
	Return a 1x8 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8)
	Return a 1x9 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9)
	Return a 1x10 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10)
	Return a 1x11 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11)
	Return a 1x12 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12)
	Return a 1x13 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12, const T &a13)
	Return a 1x14 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12, const T &a13, const T &a14)
	Return a 1x15 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12, const T &a13, const T &a14, const T &a15)
	Return a 1x16 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12, const T &a13, const T &a14, const T &a15, const T &a16)
	Return a 1x17 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12, const T &a13, const T &a14, const T &a15, const T &a16, const T &a17)
	Return a 1x18 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12, const T &a13, const T &a14, const T &a15, const T &a16, const T &a17, const T &a18)
	Return a 1x19 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12, const T &a13, const T &a14, const T &a15, const T &a16, const T &a17, const T &a18, const T &a19)
	Return a 1x20 image containing specified values.
static CImg< T >	vector (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12, const T &a13, const T &a14, const T &a15, const T &a16, const T &a17, const T &a18, const T &a19, const T &a20)
	Return a 1x21 image containing specified values.
static CImg< T >	matrix (const T &a0)
	Return a 1x1 matrix containing specified coefficients. More...
static CImg< T >	matrix (const T &a0, const T &a1, const T &a2, const T &a3)
	Return a 2x2 matrix containing specified coefficients. More...
static CImg< T >	matrix (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8)
	Return a 3x3 matrix containing specified coefficients. More...
static CImg< T >	matrix (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12, const T &a13, const T &a14, const T &a15)
	Return a 4x4 matrix containing specified coefficients.
static CImg< T >	matrix (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5, const T &a6, const T &a7, const T &a8, const T &a9, const T &a10, const T &a11, const T &a12, const T &a13, const T &a14, const T &a15, const T &a16, const T &a17, const T &a18, const T &a19, const T &a20, const T &a21, const T &a22, const T &a23, const T &a24)
	Return a 5x5 matrix containing specified coefficients.
static CImg< T >	tensor (const T &a0)
	Return a 1x1 symmetric matrix containing specified coefficients. More...
static CImg< T >	tensor (const T &a0, const T &a1, const T &a2)
	Return a 2x2 symmetric matrix tensor containing specified coefficients.
static CImg< T >	tensor (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4, const T &a5)
	Return a 3x3 symmetric matrix containing specified coefficients.
static CImg< T >	diagonal (const T &a0)
	Return a 1x1 diagonal matrix containing specified coefficients.
static CImg< T >	diagonal (const T &a0, const T &a1)
	Return a 2x2 diagonal matrix containing specified coefficients.
static CImg< T >	diagonal (const T &a0, const T &a1, const T &a2)
	Return a 3x3 diagonal matrix containing specified coefficients.
static CImg< T >	diagonal (const T &a0, const T &a1, const T &a2, const T &a3)
	Return a 4x4 diagonal matrix containing specified coefficients.
static CImg< T >	diagonal (const T &a0, const T &a1, const T &a2, const T &a3, const T &a4)
	Return a 5x5 diagonal matrix containing specified coefficients.
static CImg< T >	identity_matrix (const unsigned int N)
	Return a NxN identity matrix. More...
static CImg< T >	sequence (const unsigned int N, const T &a0, const T &a1)
	Return a N-numbered sequence vector from a0 to a1. More...
static CImg< T >	rotation_matrix (const float x, const float y, const float z, const float w, const bool is_quaternion=false)
	Return a 3x3 rotation matrix from an { axis + angle } or a quaternion. More...
double	magnitude (const float magnitude_type=2) const
	Compute norm of the image, viewed as a matrix. More...
double	trace () const
	Compute the trace of the image, viewed as a matrix.
double	det () const
	Compute the determinant of the image, viewed as a matrix.
template<typename t >
double	dot (const CImg< t > &img) const
	Compute the dot product between instance and argument, viewed as matrices. More...
CImg< T >	get_vector_at (const unsigned int x, const unsigned int y=0, const unsigned int z=0) const
	Get vector-valued pixel located at specified position. More...
CImg< T >	get_matrix_at (const unsigned int x=0, const unsigned int y=0, const unsigned int z=0) const
	Get (square) matrix-valued pixel located at specified position. More...
CImg< T >	get_tensor_at (const unsigned int x, const unsigned int y=0, const unsigned int z=0) const
	Get tensor-valued pixel located at specified position. More...
template<typename t >
CImg< T > &	set_vector_at (const CImg< t > &vec, const unsigned int x, const unsigned int y=0, const unsigned int z=0)
	Set vector-valued pixel at specified position. More...
template<typename t >
CImg< T > &	set_matrix_at (const CImg< t > &mat, const unsigned int x=0, const unsigned int y=0, const unsigned int z=0)
	Set (square) matrix-valued pixel at specified position. More...
template<typename t >
CImg< T > &	set_tensor_at (const CImg< t > &ten, const unsigned int x=0, const unsigned int y=0, const unsigned int z=0)
	Set tensor-valued pixel at specified position. More...
CImg< T > &	diagonal ()
	Resize image to become a diagonal matrix. More...
CImg< T >	get_diagonal () const
	Resize image to become a diagonal matrix [new-instance version].
CImg< T > &	identity_matrix ()
	Replace the image by an identity matrix. More...
CImg< T >	get_identity_matrix () const
	Replace the image by an identity matrix [new-instance version].
CImg< T > &	sequence (const T &a0, const T &a1)
	Fill image with a linear sequence of values. More...
CImg< T >	get_sequence (const T &a0, const T &a1) const
	Fill image with a linear sequence of values [new-instance version].
CImg< T > &	transpose ()
	Transpose the image, viewed as a matrix. More...
CImg< T >	get_transpose () const
	Transpose the image, viewed as a matrix [new-instance version].
template<typename t >
CImg< T > &	cross (const CImg< t > &img)
	Compute the cross product between two 1x3 images, viewed as 3D vectors. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	get_cross (const CImg< t > &img) const
	Compute the cross product between two 1x3 images, viewed as 3D vectors [new-instance version].
CImg< T > &	invert (const bool use_LU=false, const float lambda=0)
	Invert the instance image, viewed as a matrix. More...
CImg< Tfloat >	get_invert (const bool use_LU=false, const float lambda=0) const
	Invert the instance image, viewed as a matrix [new-instance version].
template<typename t >
CImg< T > &	solve (const CImg< t > &A, const bool use_LU=false)
	Solve a system of linear equations. More...
template<typename t >
CImg< typename cimg::superset2< T, t, float >::type >	get_solve (const CImg< t > &A, const bool use_LU=false) const
	Solve a system of linear equations [new-instance version].
template<typename t >
CImg< T > &	solve_tridiagonal (const CImg< t > &A)
	Solve a tridiagonal system of linear equations. More...
template<typename t >
CImg< typename cimg::superset2< T, t, float >::type >	get_solve_tridiagonal (const CImg< t > &A) const
	Solve a tridiagonal system of linear equations [new-instance version].
template<typename t >
const CImg< T > &	eigen (CImg< t > &val, CImg< t > &vec) const
	Compute eigenvalues and eigenvectors of the instance image, viewed as a matrix. More...
CImgList< Tfloat >	get_eigen () const
	Compute eigenvalues and eigenvectors of the instance image, viewed as a matrix. More...
template<typename t >
const CImg< T > &	symmetric_eigen (CImg< t > &val, CImg< t > &vec) const
	Compute eigenvalues and eigenvectors of the instance image, viewed as a symmetric matrix. More...
CImgList< Tfloat >	get_symmetric_eigen () const
	Compute eigenvalues and eigenvectors of the instance image, viewed as a symmetric matrix. More...
template<typename t >
CImg< T > &	sort (CImg< t > &permutations, const bool is_increasing=true)
	Sort pixel values and get sorting permutations. More...
template<typename t >
CImg< T >	get_sort (CImg< t > &permutations, const bool is_increasing=true) const
	Sort pixel values and get sorting permutations [new-instance version].
CImg< T > &	sort (const bool is_increasing=true, const char axis=0)
	Sort pixel values. More...
CImg< T >	get_sort (const bool is_increasing=true, const char axis=0) const
	Sort pixel values [new-instance version].
template<typename t >
const CImg< T > &	SVD (CImg< t > &U, CImg< t > &S, CImg< t > &V, const bool sorting=true, const unsigned int max_iteration=40, const float lambda=0) const
	Compute the SVD of the instance image, viewed as a general matrix. More...
CImgList< Tfloat >	get_SVD (const bool sorting=true, const unsigned int max_iteration=40, const float lambda=0) const
	Compute the SVD of the instance image, viewed as a general matrix. More...
template<typename t >
CImg< T > &	project_matrix (const CImg< t > &dictionary, const unsigned int method=0, const unsigned int max_iter=0, const double max_residual=1e-6)
	Compute the projection of the instance matrix onto the specified dictionary. More...
template<typename t >
CImg< Tfloat >	get_project_matrix (const CImg< t > &dictionary, const unsigned int method=0, const unsigned int max_iter=0, const double max_residual=1e-6) const
template<typename t >
CImg< T > &	dijkstra (const unsigned int starting_node, const unsigned int ending_node, CImg< t > &previous_node)
	Return minimal path in a graph, using the Dijkstra algorithm. More...
template<typename t >
CImg< T >	get_dijkstra (const unsigned int starting_node, const unsigned int ending_node, CImg< t > &previous_node) const
	Return minimal path in a graph, using the Dijkstra algorithm [new-instance version].
CImg< T > &	dijkstra (const unsigned int starting_node, const unsigned int ending_node=~0U)
	Return minimal path in a graph, using the Dijkstra algorithm.
CImg< Tfloat >	get_dijkstra (const unsigned int starting_node, const unsigned int ending_node=~0U) const
	Return minimal path in a graph, using the Dijkstra algorithm [new-instance version].

Value Manipulation
CImg< T > &	fill (const T &val)
	Fill all pixel values with specified value. More...
CImg< T >	get_fill (const T &val) const
	Fill all pixel values with specified value [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1)
	Fill sequentially all pixel values with specified values. More...
CImg< T >	get_fill (const T &val0, const T &val1) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2, const T &val3)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2, const T &val3) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9, const T &val10)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9, const T &val10) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9, const T &val10, const T &val11)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9, const T &val10, const T &val11) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9, const T &val10, const T &val11, const T &val12)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9, const T &val10, const T &val11, const T &val12) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9, const T &val10, const T &val11, const T &val12, const T &val13)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9, const T &val10, const T &val11, const T &val12, const T &val13) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9, const T &val10, const T &val11, const T &val12, const T &val13, const T &val14)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9, const T &val10, const T &val11, const T &val12, const T &val13, const T &val14) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9, const T &val10, const T &val11, const T &val12, const T &val13, const T &val14, const T &val15)
	Fill sequentially all pixel values with specified values [overloading].
CImg< T >	get_fill (const T &val0, const T &val1, const T &val2, const T &val3, const T &val4, const T &val5, const T &val6, const T &val7, const T &val8, const T &val9, const T &val10, const T &val11, const T &val12, const T &val13, const T &val14, const T &val15) const
	Fill sequentially all pixel values with specified values [new-instance version].
CImg< T > &	fill (const char *const expression, const bool repeat_values, const bool allow_formula=true, CImgList< T > *const list_images=0)
	Fill sequentially pixel values according to a given expression. More...
CImg< T >	get_fill (const char *const expression, const bool repeat_values, const bool allow_formula=true, CImgList< T > *const list_images=0) const
	Fill sequentially pixel values according to a given expression [new-instance version].
CImg< T > &	fill_from_values (const char *const values, const bool repeat_values)
	Fill sequentially pixel values according to a value sequence, given as a string. More...
CImg< T >	get_fill_from_values (const char *const values, const bool repeat_values) const
	Fill sequentially pixel values according to a value sequence, given as a string [new-instance version].
template<typename t >
CImg< T > &	fill (const CImg< t > &values, const bool repeat_values=true)
	Fill sequentially pixel values according to the values found in another image. More...
template<typename t >
CImg< T >	get_fill (const CImg< t > &values, const bool repeat_values=true) const
	Fill sequentially pixel values according to the values found in another image [new-instance version].
CImg< T > &	fillX (const unsigned int y, const unsigned int z, const unsigned int c, const int a0,...)
	Fill pixel values along the X-axis at a specified pixel position. More...
CImg< T > &	fillX (const unsigned int y, const unsigned int z, const unsigned int c, const double a0,...)
	Fill pixel values along the X-axis at a specified pixel position [overloading].
CImg< T > &	fillY (const unsigned int x, const unsigned int z, const unsigned int c, const int a0,...)
	Fill pixel values along the Y-axis at a specified pixel position. More...
CImg< T > &	fillY (const unsigned int x, const unsigned int z, const unsigned int c, const double a0,...)
	Fill pixel values along the Y-axis at a specified pixel position [overloading].
CImg< T > &	fillZ (const unsigned int x, const unsigned int y, const unsigned int c, const int a0,...)
	Fill pixel values along the Z-axis at a specified pixel position. More...
CImg< T > &	fillZ (const unsigned int x, const unsigned int y, const unsigned int c, const double a0,...)
	Fill pixel values along the Z-axis at a specified pixel position [overloading].
CImg< T > &	fillC (const unsigned int x, const unsigned int y, const unsigned int z, const int a0,...)
	Fill pixel values along the C-axis at a specified pixel position. More...
CImg< T > &	fillC (const unsigned int x, const unsigned int y, const unsigned int z, const double a0,...)
	Fill pixel values along the C-axis at a specified pixel position [overloading].
template<typename t >
CImg< T > &	discard (const CImg< t > &values, const char axis=0)
	Discard specified sequence of values in the image buffer, along a specific axis. More...
template<typename t >
CImg< T >	get_discard (const CImg< t > &values, const char axis=0) const
CImg< T > &	discard (const char axis=0)
	Discard neighboring duplicates in the image buffer, along the specified axis.
CImg< T >	get_discard (const char axis=0) const
	Discard neighboring duplicates in the image buffer, along the specified axis [new-instance version].
CImg< T > &	invert_endianness ()
	Invert endianness of all pixel values.
CImg< T >	get_invert_endianness () const
	Invert endianness of all pixel values [new-instance version].
CImg< T > &	rand (const T &val_min, const T &val_max)
	Fill image with random values in specified range. More...
CImg< T >	get_rand (const T &val_min, const T &val_max) const
	Fill image with random values in specified range [new-instance version].
CImg< T > &	round (const double y=1, const int rounding_type=0)
	Round pixel values. More...
CImg< T >	get_round (const double y=1, const unsigned int rounding_type=0) const
	Round pixel values [new-instance version].
CImg< T > &	noise (const double sigma, const unsigned int noise_type=0)
	Add random noise to pixel values. More...
CImg< T >	get_noise (const double sigma, const unsigned int noise_type=0) const
	Add random noise to pixel values [new-instance version].
CImg< T > &	normalize (const T &min_value, const T &max_value, const float constant_case_ratio=0)
	Linearly normalize pixel values. More...
CImg< Tfloat >	get_normalize (const T &min_value, const T &max_value, const float ratio_if_constant_image=0) const
	Linearly normalize pixel values [new-instance version].
CImg< T > &	normalize ()
	Normalize multi-valued pixels of the image instance, with respect to their L2-norm. More...
CImg< Tfloat >	get_normalize () const
	Normalize multi-valued pixels of the image instance, with respect to their L2-norm [new-instance version].
CImg< T > &	norm (const int norm_type=2)
	Compute Lp-norm of each multi-valued pixel of the image instance. More...
CImg< Tfloat >	get_norm (const int norm_type=2) const
	Compute L2-norm of each multi-valued pixel of the image instance [new-instance version].
CImg< T > &	cut (const T &min_value, const T &max_value)
	Cut pixel values in specified range. More...
CImg< T >	get_cut (const T &min_value, const T &max_value) const
	Cut pixel values in specified range [new-instance version].
CImg< T > &	quantize (const unsigned int nb_levels, const bool keep_range=true)
	Uniformly quantize pixel values. More...
CImg< T >	get_quantize (const unsigned int n, const bool keep_range=true) const
	Uniformly quantize pixel values [new-instance version].
T	otsu (const unsigned int nb_levels=256) const
	Return the Otsu threshold. More...
CImg< T > &	threshold (const T &value, const bool soft_threshold=false, const bool strict_threshold=false)
	Threshold pixel values. More...
CImg< T >	get_threshold (const T &value, const bool soft_threshold=false, const bool strict_threshold=false) const
	Threshold pixel values [new-instance version].
CImg< T > &	histogram (const unsigned int nb_levels, const T &min_value, const T &max_value)
	Compute the histogram of pixel values. More...
CImg< T > &	histogram (const unsigned int nb_levels)
	Compute the histogram of pixel values [overloading].
CImg< ulongT >	get_histogram (const unsigned int nb_levels, const T &min_value, const T &max_value) const
	Compute the histogram of pixel values [new-instance version].
CImg< ulongT >	get_histogram (const unsigned int nb_levels) const
	Compute the histogram of pixel values [new-instance version].
CImg< T > &	equalize (const unsigned int nb_levels, const T &min_value, const T &max_value)
	Equalize histogram of pixel values. More...
CImg< T > &	equalize (const unsigned int nb_levels)
	Equalize histogram of pixel values [overloading].
CImg< T >	get_equalize (const unsigned int nblevels, const T &val_min, const T &val_max) const
	Equalize histogram of pixel values [new-instance version].
CImg< T >	get_equalize (const unsigned int nblevels) const
	Equalize histogram of pixel values [new-instance version].
template<typename t >
CImg< T > &	index (const CImg< t > &colormap, const float dithering=1, const bool map_indexes=false)
	Index multi-valued pixels regarding to a specified palette. More...
template<typename t >
CImg< typename CImg< t >::Tuint >	get_index (const CImg< t > &colormap, const float dithering=1, const bool map_indexes=true) const
	Index multi-valued pixels regarding to a specified colormap [new-instance version].
template<typename t >
CImg< T > &	map (const CImg< t > &palette, const unsigned int boundary_conditions=0)
	Map predefined palette on the scalar (indexed) image instance. More...
template<typename t >
CImg< t >	get_map (const CImg< t > &palette, const unsigned int boundary_conditions=0) const
	Map predefined palette on the scalar (indexed) image instance [new-instance version].
CImg< T > &	label (const bool is_high_connectivity=false, const Tfloat tolerance=0, const bool is_L2_norm=true)
	Label connected components. More...
CImg< ulongT >	get_label (const bool is_high_connectivity=false, const Tfloat tolerance=0, const bool is_L2_norm=true) const
	Label connected components [new-instance version].
template<typename t >
CImg< T > &	label (const CImg< t > &connectivity_mask, const Tfloat tolerance=0, const bool is_L2_norm=true)
	Label connected components [overloading]. More...
template<typename t >
CImg< ulongT >	get_label (const CImg< t > &connectivity_mask, const Tfloat tolerance=0, const bool is_L2_norm=true) const
	Label connected components [new-instance version].

Color Base Management
static const CImg< Tuchar > &	default_LUT256 ()
	Return palette "default", containing 256 colors entries in RGB. More...
static const CImg< Tuchar > &	HSV_LUT256 ()
	Return palette "HSV", containing 256 colors entries in RGB. More...
static const CImg< Tuchar > &	lines_LUT256 ()
	Return palette "lines", containing 256 colors entries in RGB. More...
static const CImg< Tuchar > &	hot_LUT256 ()
	Return palette "hot", containing 256 colors entries in RGB. More...
static const CImg< Tuchar > &	cool_LUT256 ()
	Return palette "cool", containing 256 colors entries in RGB. More...
static const CImg< Tuchar > &	jet_LUT256 ()
	Return palette "jet", containing 256 colors entries in RGB. More...
static const CImg< Tuchar > &	flag_LUT256 ()
	Return palette "flag", containing 256 colors entries in RGB. More...
static const CImg< Tuchar > &	cube_LUT256 ()
	Return palette "cube", containing 256 colors entries in RGB. More...
CImg< T > &	sRGBtoRGB ()
	Convert pixel values from sRGB to RGB color spaces.
CImg< Tfloat >	get_sRGBtoRGB () const
	Convert pixel values from sRGB to RGB color spaces [new-instance version].
CImg< T > &	RGBtosRGB ()
	Convert pixel values from RGB to sRGB color spaces.
CImg< Tfloat >	get_RGBtosRGB () const
	Convert pixel values from RGB to sRGB color spaces [new-instance version].
CImg< T > &	RGBtoHSI ()
	Convert pixel values from RGB to HSI color spaces.
CImg< Tfloat >	get_RGBtoHSI () const
	Convert pixel values from RGB to HSI color spaces [new-instance version].
CImg< T > &	HSItoRGB ()
	Convert pixel values from HSI to RGB color spaces.
CImg< Tfloat >	get_HSItoRGB () const
	Convert pixel values from HSI to RGB color spaces [new-instance version].
CImg< T > &	RGBtoHSL ()
	Convert pixel values from RGB to HSL color spaces.
CImg< Tfloat >	get_RGBtoHSL () const
	Convert pixel values from RGB to HSL color spaces [new-instance version].
CImg< T > &	HSLtoRGB ()
	Convert pixel values from HSL to RGB color spaces.
CImg< Tuchar >	get_HSLtoRGB () const
	Convert pixel values from HSL to RGB color spaces [new-instance version].
CImg< T > &	RGBtoHSV ()
	Convert pixel values from RGB to HSV color spaces.
CImg< Tfloat >	get_RGBtoHSV () const
	Convert pixel values from RGB to HSV color spaces [new-instance version].
CImg< T > &	HSVtoRGB ()
	Convert pixel values from HSV to RGB color spaces.
CImg< Tuchar >	get_HSVtoRGB () const
	Convert pixel values from HSV to RGB color spaces [new-instance version].
CImg< T > &	RGBtoYCbCr ()
	Convert pixel values from RGB to YCbCr color spaces.
CImg< Tuchar >	get_RGBtoYCbCr () const
	Convert pixel values from RGB to YCbCr color spaces [new-instance version].
CImg< T > &	YCbCrtoRGB ()
	Convert pixel values from RGB to YCbCr color spaces.
CImg< Tuchar >	get_YCbCrtoRGB () const
	Convert pixel values from RGB to YCbCr color spaces [new-instance version].
CImg< T > &	RGBtoYUV ()
	Convert pixel values from RGB to YUV color spaces.
CImg< Tfloat >	get_RGBtoYUV () const
	Convert pixel values from RGB to YUV color spaces [new-instance version].
CImg< T > &	YUVtoRGB ()
	Convert pixel values from YUV to RGB color spaces.
CImg< Tuchar >	get_YUVtoRGB () const
	Convert pixel values from YUV to RGB color spaces [new-instance version].
CImg< T > &	RGBtoCMY ()
	Convert pixel values from RGB to CMY color spaces.
CImg< Tuchar >	get_RGBtoCMY () const
	Convert pixel values from RGB to CMY color spaces [new-instance version].
CImg< T > &	CMYtoRGB ()
	Convert pixel values from CMY to RGB color spaces.
CImg< Tuchar >	get_CMYtoRGB () const
	Convert pixel values from CMY to RGB color spaces [new-instance version].
CImg< T > &	CMYtoCMYK ()
	Convert pixel values from CMY to CMYK color spaces.
CImg< Tuchar >	get_CMYtoCMYK () const
	Convert pixel values from CMY to CMYK color spaces [new-instance version].
CImg< T > &	CMYKtoCMY ()
	Convert pixel values from CMYK to CMY color spaces.
CImg< Tfloat >	get_CMYKtoCMY () const
	Convert pixel values from CMYK to CMY color spaces [new-instance version].
CImg< T > &	RGBtoXYZ (const bool use_D65=true)
	Convert pixel values from RGB to XYZ color spaces. More...
CImg< Tfloat >	get_RGBtoXYZ (const bool use_D65=true) const
	Convert pixel values from RGB to XYZ color spaces [new-instance version].
CImg< T > &	XYZtoRGB (const bool use_D65=true)
	Convert pixel values from XYZ to RGB color spaces. More...
CImg< Tuchar >	get_XYZtoRGB (const bool use_D65=true) const
	Convert pixel values from XYZ to RGB color spaces [new-instance version].
CImg< T > &	XYZtoLab (const bool use_D65=true)
	Convert pixel values from XYZ to Lab color spaces.
CImg< Tfloat >	get_XYZtoLab (const bool use_D65=true) const
	Convert pixel values from XYZ to Lab color spaces [new-instance version].
CImg< T > &	LabtoXYZ (const bool use_D65=true)
	Convert pixel values from Lab to XYZ color spaces.
CImg< Tfloat >	get_LabtoXYZ (const bool use_D65=true) const
	Convert pixel values from Lab to XYZ color spaces [new-instance version].
CImg< T > &	XYZtoxyY ()
	Convert pixel values from XYZ to xyY color spaces.
CImg< Tfloat >	get_XYZtoxyY () const
	Convert pixel values from XYZ to xyY color spaces [new-instance version].
CImg< T > &	xyYtoXYZ ()
	Convert pixel values from xyY pixels to XYZ color spaces.
CImg< Tfloat >	get_xyYtoXYZ () const
	Convert pixel values from xyY pixels to XYZ color spaces [new-instance version].
CImg< T > &	RGBtoLab (const bool use_D65=true)
	Convert pixel values from RGB to Lab color spaces.
CImg< Tfloat >	get_RGBtoLab (const bool use_D65=true) const
	Convert pixel values from RGB to Lab color spaces [new-instance version].
CImg< T > &	LabtoRGB (const bool use_D65=true)
	Convert pixel values from Lab to RGB color spaces.
CImg< Tuchar >	get_LabtoRGB (const bool use_D65=true) const
	Convert pixel values from Lab to RGB color spaces [new-instance version].
CImg< T > &	RGBtoxyY (const bool use_D65=true)
	Convert pixel values from RGB to xyY color spaces.
CImg< Tfloat >	get_RGBtoxyY (const bool use_D65=true) const
	Convert pixel values from RGB to xyY color spaces [new-instance version].
CImg< T > &	xyYtoRGB (const bool use_D65=true)
	Convert pixel values from xyY to RGB color spaces.
CImg< Tuchar >	get_xyYtoRGB (const bool use_D65=true) const
	Convert pixel values from xyY to RGB color spaces [new-instance version].
CImg< T > &	RGBtoCMYK ()
	Convert pixel values from RGB to CMYK color spaces.
CImg< Tfloat >	get_RGBtoCMYK () const
	Convert pixel values from RGB to CMYK color spaces [new-instance version].
CImg< T > &	CMYKtoRGB ()
	Convert pixel values from CMYK to RGB color spaces.
CImg< Tuchar >	get_CMYKtoRGB () const
	Convert pixel values from CMYK to RGB color spaces [new-instance version].

Geometric / Spatial Manipulation
template<typename tfunc >
static CImg< floatT >	streamline (const tfunc &func, const float x, const float y, const float z, const float L=256, const float dl=0.1f, const unsigned int interpolation_type=2, const bool is_backward_tracking=false, const bool is_oriented_only=false, const float x0=0, const float y0=0, const float z0=0, const float x1=0, const float y1=0, const float z1=0)
	Return stream line of a 3D vector field. More...
static CImg< floatT >	streamline (const char *const expression, const float x, const float y, const float z, const float L=256, const float dl=0.1f, const unsigned int interpolation_type=2, const bool is_backward_tracking=true, const bool is_oriented_only=false, const float x0=0, const float y0=0, const float z0=0, const float x1=0, const float y1=0, const float z1=0)
	Return stream line of a 3D vector field [overloading].
CImg< T > &	resize (const int size_x, const int size_y=-100, const int size_z=-100, const int size_c=-100, const int interpolation_type=1, const unsigned int boundary_conditions=0, const float centering_x=0, const float centering_y=0, const float centering_z=0, const float centering_c=0)
	Resize image to new dimensions. More...
CImg< T >	get_resize (const int size_x, const int size_y=-100, const int size_z=-100, const int size_c=-100, const int interpolation_type=1, const unsigned int boundary_conditions=0, const float centering_x=0, const float centering_y=0, const float centering_z=0, const float centering_c=0) const
	Resize image to new dimensions [new-instance version].
template<typename t >
CImg< T > &	resize (const CImg< t > &src, const int interpolation_type=1, const unsigned int boundary_conditions=0, const float centering_x=0, const float centering_y=0, const float centering_z=0, const float centering_c=0)
	Resize image to dimensions of another image. More...
template<typename t >
CImg< T >	get_resize (const CImg< t > &src, const int interpolation_type=1, const unsigned int boundary_conditions=0, const float centering_x=0, const float centering_y=0, const float centering_z=0, const float centering_c=0) const
	Resize image to dimensions of another image [new-instance version].
CImg< T > &	resize (const CImgDisplay &disp, const int interpolation_type=1, const unsigned int boundary_conditions=0, const float centering_x=0, const float centering_y=0, const float centering_z=0, const float centering_c=0)
	Resize image to dimensions of a display window. More...
CImg< T >	get_resize (const CImgDisplay &disp, const int interpolation_type=1, const unsigned int boundary_conditions=0, const float centering_x=0, const float centering_y=0, const float centering_z=0, const float centering_c=0) const
	Resize image to dimensions of a display window [new-instance version].
CImg< T > &	resize_halfXY ()
	Resize image to half-size along XY axes, using an optimized filter.
CImg< T >	get_resize_halfXY () const
	Resize image to half-size along XY axes, using an optimized filter [new-instance version].
CImg< T > &	resize_doubleXY ()
	Resize image to double-size, using the Scale2X algorithm. More...
CImg< T >	get_resize_doubleXY () const
	Resize image to double-size, using the Scale2X algorithm [new-instance version].
CImg< T > &	resize_tripleXY ()
	Resize image to triple-size, using the Scale3X algorithm. More...
CImg< T >	get_resize_tripleXY () const
	Resize image to triple-size, using the Scale3X algorithm [new-instance version].
CImg< T > &	mirror (const char axis)
	Mirror image content along specified axis. More...
CImg< T >	get_mirror (const char axis) const
	Mirror image content along specified axis [new-instance version].
CImg< T > &	mirror (const char *const axes)
	Mirror image content along specified axes. More...
CImg< T >	get_mirror (const char *const axes) const
	Mirror image content along specified axes [new-instance version].
CImg< T > &	shift (const int delta_x, const int delta_y=0, const int delta_z=0, const int delta_c=0, const unsigned int boundary_conditions=0)
	Shift image content. More...
CImg< T >	get_shift (const int delta_x, const int delta_y=0, const int delta_z=0, const int delta_c=0, const unsigned int boundary_conditions=0) const
	Shift image content [new-instance version].
CImg< T > &	permute_axes (const char *const axes_order)
	Permute axes order. More...
CImg< T >	get_permute_axes (const char *const axes_order) const
	Permute axes order [new-instance version].
CImg< T > &	unroll (const char axis)
	Unroll pixel values along specified axis. More...
CImg< T >	get_unroll (const char axis) const
	Unroll pixel values along specified axis [new-instance version].
CImg< T > &	rotate (const float angle, const unsigned int interpolation=1, const unsigned int boundary_conditions=0)
	Rotate image with arbitrary angle. More...
CImg< T >	get_rotate (const float angle, const unsigned int interpolation=1, const unsigned int boundary_conditions=0) const
	Rotate image with arbitrary angle [new-instance version].
CImg< T > &	rotate (const float angle, const float cx, const float cy, const unsigned int interpolation, const unsigned int boundary_conditions=0)
	Rotate image with arbitrary angle, around a center point. More...
CImg< T >	get_rotate (const float angle, const float cx, const float cy, const unsigned int interpolation, const unsigned int boundary_conditions=0) const
	Rotate image with arbitrary angle, around a center point [new-instance version].
CImg< T >	rotate (const float u, const float v, const float w, const float angle, const unsigned int interpolation, const unsigned int boundary_conditions)
	Rotate volumetric image with arbitrary angle and axis. More...
CImg< T >	get_rotate (const float u, const float v, const float w, const float angle, const unsigned int interpolation, const unsigned int boundary_conditions) const
	Rotate volumetric image with arbitrary angle and axis [new-instance version].
CImg< T >	rotate (const float u, const float v, const float w, const float angle, const float cx, const float cy, const float cz, const unsigned int interpolation=1, const unsigned int boundary_conditions=0)
	Rotate volumetric image with arbitrary angle and axis, around a center point. More...
CImg< T >	get_rotate (const float u, const float v, const float w, const float angle, const float cx, const float cy, const float cz, const unsigned int interpolation=1, const unsigned int boundary_conditions=0) const
	Rotate volumetric image with arbitrary angle and axis, around a center point [new-instance version].
template<typename t >
CImg< T > &	warp (const CImg< t > &p_warp, const unsigned int mode=0, const unsigned int interpolation=1, const unsigned int boundary_conditions=0)
	Warp image content by a warping field. More...
template<typename t >
CImg< T >	get_warp (const CImg< t > &p_warp, const unsigned int mode=0, const unsigned int interpolation=1, const unsigned int boundary_conditions=0) const
	Warp image content by a warping field [new-instance version]
CImg< T >	get_projections2d (const unsigned int x0, const unsigned int y0, const unsigned int z0) const
	Generate a 2D representation of a 3D image, with XY,XZ and YZ views. More...
CImg< T > &	projections2d (const unsigned int x0, const unsigned int y0, const unsigned int z0)
	Construct a 2D representation of a 3D image, with XY,XZ and YZ views [in-place version].
CImg< T > &	crop (const int x0, const int y0, const int z0, const int c0, const int x1, const int y1, const int z1, const int c1, const unsigned int boundary_conditions=0)
	Crop image region. More...
CImg< T >	get_crop (const int x0, const int y0, const int z0, const int c0, const int x1, const int y1, const int z1, const int c1, const unsigned int boundary_conditions=0) const
	Crop image region [new-instance version].
CImg< T > &	crop (const int x0, const int y0, const int z0, const int x1, const int y1, const int z1, const unsigned int boundary_conditions=0)
	Crop image region [overloading].
CImg< T >	get_crop (const int x0, const int y0, const int z0, const int x1, const int y1, const int z1, const unsigned int boundary_conditions=0) const
	Crop image region [new-instance version].
CImg< T > &	crop (const int x0, const int y0, const int x1, const int y1, const unsigned int boundary_conditions=0)
	Crop image region [overloading].
CImg< T >	get_crop (const int x0, const int y0, const int x1, const int y1, const unsigned int boundary_conditions=0) const
	Crop image region [new-instance version].
CImg< T > &	crop (const int x0, const int x1, const unsigned int boundary_conditions=0)
	Crop image region [overloading].
CImg< T >	get_crop (const int x0, const int x1, const unsigned int boundary_conditions=0) const
	Crop image region [new-instance version].
CImg< T > &	autocrop (const T &value, const char *const axes="czyx")
	Autocrop image region, regarding the specified background value.
CImg< T >	get_autocrop (const T &value, const char *const axes="czyx") const
	Autocrop image region, regarding the specified background value [new-instance version].
CImg< T > &	autocrop (const T *const color=0, const char *const axes="zyx")
	Autocrop image region, regarding the specified background color. More...
CImg< T >	get_autocrop (const T *const color=0, const char *const axes="zyx") const
	Autocrop image region, regarding the specified background color [new-instance version].
CImg< T >	get_column (const int x0) const
	Return specified image column. More...
CImg< T > &	column (const int x0)
	Return specified image column [in-place version].
CImg< T > &	columns (const int x0, const int x1)
	Return specified range of image columns. More...
CImg< T >	get_columns (const int x0, const int x1) const
	Return specified range of image columns [in-place version].
CImg< T >	get_row (const int y0) const
	Return specified image row.
CImg< T > &	row (const int y0)
	Return specified image row [in-place version]. More...
CImg< T >	get_rows (const int y0, const int y1) const
	Return specified range of image rows. More...
CImg< T > &	rows (const int y0, const int y1)
	Return specified range of image rows [in-place version].
CImg< T >	get_slice (const int z0) const
	Return specified image slice. More...
CImg< T > &	slice (const int z0)
	Return specified image slice [in-place version].
CImg< T >	get_slices (const int z0, const int z1) const
	Return specified range of image slices. More...
CImg< T > &	slices (const int z0, const int z1)
	Return specified range of image slices [in-place version].
CImg< T >	get_channel (const int c0) const
	Return specified image channel. More...
CImg< T > &	channel (const int c0)
	Return specified image channel [in-place version].
CImg< T >	get_channels (const int c0, const int c1) const
	Return specified range of image channels. More...
CImg< T > &	channels (const int c0, const int c1)
	Return specified range of image channels [in-place version].
CImg< floatT >	get_streamline (const float x, const float y, const float z, const float L=256, const float dl=0.1f, const unsigned int interpolation_type=2, const bool is_backward_tracking=false, const bool is_oriented_only=false) const
	Return stream line of a 2D or 3D vector field.
CImg< T >	get_shared_points (const unsigned int x0, const unsigned int x1, const unsigned int y0=0, const unsigned int z0=0, const unsigned int c0=0)
	Return a shared-memory image referencing a range of pixels of the image instance. More...
const CImg< T >	get_shared_points (const unsigned int x0, const unsigned int x1, const unsigned int y0=0, const unsigned int z0=0, const unsigned int c0=0) const
	Return a shared-memory image referencing a range of pixels of the image instance [const version].
CImg< T >	get_shared_rows (const unsigned int y0, const unsigned int y1, const unsigned int z0=0, const unsigned int c0=0)
	Return a shared-memory image referencing a range of rows of the image instance. More...
const CImg< T >	get_shared_rows (const unsigned int y0, const unsigned int y1, const unsigned int z0=0, const unsigned int c0=0) const
	Return a shared-memory image referencing a range of rows of the image instance [const version].
CImg< T >	get_shared_row (const unsigned int y0, const unsigned int z0=0, const unsigned int c0=0)
	Return a shared-memory image referencing one row of the image instance. More...
const CImg< T >	get_shared_row (const unsigned int y0, const unsigned int z0=0, const unsigned int c0=0) const
	Return a shared-memory image referencing one row of the image instance [const version].
CImg< T >	get_shared_slices (const unsigned int z0, const unsigned int z1, const unsigned int c0=0)
	Return a shared memory image referencing a range of slices of the image instance. More...
const CImg< T >	get_shared_slices (const unsigned int z0, const unsigned int z1, const unsigned int c0=0) const
	Return a shared memory image referencing a range of slices of the image instance [const version].
CImg< T >	get_shared_slice (const unsigned int z0, const unsigned int c0=0)
	Return a shared-memory image referencing one slice of the image instance. More...
const CImg< T >	get_shared_slice (const unsigned int z0, const unsigned int c0=0) const
	Return a shared-memory image referencing one slice of the image instance [const version].
CImg< T >	get_shared_channels (const unsigned int c0, const unsigned int c1)
	Return a shared-memory image referencing a range of channels of the image instance. More...
const CImg< T >	get_shared_channels (const unsigned int c0, const unsigned int c1) const
	Return a shared-memory image referencing a range of channels of the image instance [const version].
CImg< T >	get_shared_channel (const unsigned int c0)
	Return a shared-memory image referencing one channel of the image instance. More...
const CImg< T >	get_shared_channel (const unsigned int c0) const
	Return a shared-memory image referencing one channel of the image instance [const version].
CImg< T >	get_shared ()
	Return a shared-memory version of the image instance.
const CImg< T >	get_shared () const
	Return a shared-memory version of the image instance [const version].
CImgList< T >	get_split (const char axis, const int nb=-1) const
	Split image into a list along specified axis. More...
template<typename t >
CImgList< T >	get_split (const CImg< t > &values, const char axis=0, const bool keep_values=true) const
	Split image into a list of sub-images, according to a specified splitting value sequence and optionally axis. More...
template<typename t >
CImg< T > &	append (const CImg< t > &img, const char axis='x', const float align=0)
	Append two images along specified axis. More...
CImg< T > &	append (const CImg< T > &img, const char axis='x', const float align=0)
	Append two images along specified axis [specialization].
template<typename t >
CImg< typename cimg::superset< T, t >::type >	get_append (const CImg< T > &img, const char axis='x', const float align=0) const
	Append two images along specified axis [const version].
CImg< T >	get_append (const CImg< T > &img, const char axis='x', const float align=0) const
	Append two images along specified axis [specialization].

Filtering / Transforms
static void	FFT (CImg< T > &real, CImg< T > &imag, const char axis, const bool is_inverse=false, const unsigned int nb_threads=0)
	Compute 1D Fast Fourier Transform, along a specified axis. More...
static void	FFT (CImg< T > &real, CImg< T > &imag, const bool is_inverse=false, const unsigned int nb_threads=0)
	Compute n-D Fast Fourier Transform. More...
template<typename t >
CImg< T > &	correlate (const CImg< t > &kernel, const unsigned int boundary_conditions=1, const bool is_normalized=false, const unsigned int channel_mode=1, const int xcenter=(int)(~0U >>1), const int ycenter=(int)(~0U >>1), const int zcenter=(int)(~0U >>1), const int xstart=0, const int ystart=0, const int zstart=0, const int xend=(int)(~0U >>1), const int yend=(int)(~0U >>1), const int zend=(int)(~0U >>1), const float xstride=1, const float ystride=1, const float zstride=1, const float xdilation=1, const float ydilation=1, const float zdilation=1, const bool interpolation_type=false)
	Correlate image by a kernel. More...
template<typename t >
CImg< typename cimg::superset2< T, t, float >::type >	get_correlate (const CImg< t > &kernel, const unsigned int boundary_conditions=1, const bool is_normalized=false, const unsigned int channel_mode=1, const int xcenter=(int)(~0U >>1), const int ycenter=(int)(~0U >>1), const int zcenter=(int)(~0U >>1), const int xstart=0, const int ystart=0, const int zstart=0, const int xend=(int)(~0U >>1), const int yend=(int)(~0U >>1), const int zend=(int)(~0U >>1), const float xstride=1, const float ystride=1, const float zstride=1, const float xdilation=1, const float ydilation=1, const float zdilation=1, const bool interpolation_type=false) const
template<typename t >
CImg< T > &	convolve (const CImg< t > &kernel, const unsigned int boundary_conditions=1, const bool is_normalized=false, const unsigned int channel_mode=1, const int xcenter=(int)(~0U >>1), const int ycenter=(int)(~0U >>1), const int zcenter=(int)(~0U >>1), const int xstart=0, const int ystart=0, const int zstart=0, const int xend=(int)(~0U >>1), const int yend=(int)(~0U >>1), const int zend=(int)(~0U >>1), const float xstride=1, const float ystride=1, const float zstride=1, const float xdilation=1, const float ydilation=1, const float zdilation=1, const bool interpolation_type=false)
	Convolve image by a kernel. More...
template<typename t >
CImg< typename cimg::superset2< T, t, float >::type >	get_convolve (const CImg< t > &kernel, const unsigned int boundary_conditions=1, const bool is_normalized=false, const unsigned int channel_mode=1, const int xcenter=(int)(~0U >>1), const int ycenter=(int)(~0U >>1), const int zcenter=(int)(~0U >>1), const int xstart=0, const int ystart=0, const int zstart=0, const int xend=(int)(~0U >>1), const int yend=(int)(~0U >>1), const int zend=(int)(~0U >>1), const float xstride=1, const float ystride=1, const float zstride=1, const float xdilation=1, const float ydilation=1, const float zdilation=1, const bool interpolation_type=false) const
	Convolve image by a kernel [new-instance version].
CImg< T > &	cumulate (const char axis=0)
	Cumulate image values, optionally along specified axis. More...
CImg< Tlong >	get_cumulate (const char axis=0) const
	Cumulate image values, optionally along specified axis [new-instance version].
CImg< T > &	cumulate (const char *const axes)
	Cumulate image values, along specified axes. More...
CImg< Tlong >	get_cumulate (const char *const axes) const
	Cumulate image values, along specified axes [new-instance version].
template<typename t >
CImg< T > &	erode (const CImg< t > &kernel, const unsigned int boundary_conditions=1, const bool is_real=false)
	Erode image by a structuring element. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	get_erode (const CImg< t > &kernel, const unsigned int boundary_conditions=1, const bool is_real=false) const
	Erode image by a structuring element [new-instance version].
CImg< T > &	erode (const unsigned int sx, const unsigned int sy, const unsigned int sz=1)
	Erode image by a rectangular structuring element of specified size. More...
CImg< T >	get_erode (const unsigned int sx, const unsigned int sy, const unsigned int sz=1) const
	Erode image by a rectangular structuring element of specified size [new-instance version].
CImg< T > &	erode (const unsigned int s)
	Erode the image by a square structuring element of specified size. More...
CImg< T >	get_erode (const unsigned int s) const
	Erode the image by a square structuring element of specified size [new-instance version].
template<typename t >
CImg< T > &	dilate (const CImg< t > &kernel, const unsigned int boundary_conditions=1, const bool is_real=false)
	Dilate image by a structuring element. More...
template<typename t >
CImg< typename cimg::superset< T, t >::type >	get_dilate (const CImg< t > &kernel, const unsigned int boundary_conditions=1, const bool is_real=false) const
	Dilate image by a structuring element [new-instance version].
CImg< T > &	dilate (const unsigned int sx, const unsigned int sy, const unsigned int sz=1)
	Dilate image by a rectangular structuring element of specified size. More...
CImg< T >	get_dilate (const unsigned int sx, const unsigned int sy, const unsigned int sz=1) const
	Dilate image by a rectangular structuring element of specified size [new-instance version].
CImg< T > &	dilate (const unsigned int s)
	Dilate image by a square structuring element of specified size. More...
CImg< T >	get_dilate (const unsigned int s) const
	Dilate image by a square structuring element of specified size [new-instance version].
template<typename t >
CImg< T > &	closing (const CImg< t > &kernel, const unsigned int boundary_conditions=1, const bool is_real=false)
	Apply morphological closing by a structuring element. More...
template<typename t >
CImg< T >	get_closing (const CImg< t > &kernel, const unsigned int boundary_conditions=1, const bool is_real=false) const
	Apply morphological closing by a structuring element [new-instance version].
CImg< T > &	closing (const unsigned int sx, const unsigned int sy, const unsigned int sz=1)
	Apply morphological closing by a rectangular structuring element of specified size.
CImg< T >	get_closing (const unsigned int sx, const unsigned int sy, const unsigned int sz=1) const
	Apply morphological closing by a rectangular structuring element of specified size [new-instance version].
CImg< T > &	closing (const unsigned int s)
	Apply morphological closing by a square structuring element of specified size. More...
CImg< T >	get_closing (const unsigned int s) const
	Apply morphological closing by a square structuring element of specified size [new-instance version].
template<typename t >
CImg< T > &	opening (const CImg< t > &kernel, const unsigned int boundary_conditions=1, const bool is_real=false)
	Apply morphological opening by a structuring element. More...
template<typename t >
CImg< T >	get_opening (const CImg< t > &kernel, const unsigned int boundary_conditions=1, const bool is_real=false) const
	Apply morphological opening by a structuring element [new-instance version].
CImg< T > &	opening (const unsigned int sx, const unsigned int sy, const unsigned int sz=1)
	Apply morphological opening by a rectangular structuring element of specified size.
CImg< T >	get_opening (const unsigned int sx, const unsigned int sy, const unsigned int sz=1) const
	Apply morphological opening by a rectangular structuring element of specified size [new-instance version].
CImg< T > &	opening (const unsigned int s)
	Apply morphological opening by a square structuring element of specified size. More...
CImg< T >	get_opening (const unsigned int s) const
	Apply morphological opening by a square structuring element of specified size [new-instance version].
template<typename t >
CImg< T > &	watershed (const CImg< t > &priority, const bool is_high_connectivity=false)
	Compute watershed transform. More...
template<typename t >
CImg< T >	get_watershed (const CImg< t > &priority, const bool is_high_connectivity=false) const
	Compute watershed transform [new-instance version].
CImg< T > &	deriche (const float sigma, const unsigned int order=0, const char axis='x', const unsigned int boundary_conditions=1)
	Apply recursive Deriche filter. More...
CImg< Tfloat >	get_deriche (const float sigma, const unsigned int order=0, const char axis='x', const unsigned int boundary_conditions=1) const
	Apply recursive Deriche filter [new-instance version].
CImg< T > &	vanvliet (const float sigma, const unsigned int order, const char axis='x', const unsigned int boundary_conditions=1)
	Van Vliet recursive Gaussian filter. More...
CImg< Tfloat >	get_vanvliet (const float sigma, const unsigned int order, const char axis='x', const unsigned int boundary_conditions=1) const
	Blur image using Van Vliet recursive Gaussian filter. [new-instance version].
CImg< T > &	blur (const float sigma_x, const float sigma_y, const float sigma_z, const unsigned int boundary_conditions=1, const bool is_gaussian=true)
	Blur image. More...
CImg< Tfloat >	get_blur (const float sigma_x, const float sigma_y, const float sigma_z, const unsigned int boundary_conditions=1, const bool is_gaussian=true) const
	Blur image [new-instance version].
CImg< T > &	blur (const float sigma, const unsigned int boundary_conditions=1, const bool is_gaussian=true)
	Blur image isotropically. More...
CImg< Tfloat >	get_blur (const float sigma, const unsigned int boundary_conditions=1, const bool is_gaussian=true) const
	Blur image isotropically [new-instance version].
template<typename t >
CImg< T > &	blur_anisotropic (const CImg< t > &G, const float amplitude=60, const float dl=0.8f, const float da=30, const float gauss_prec=2, const unsigned int interpolation_type=0, const bool is_fast_approx=1)
	Blur image anisotropically, directed by a field of diffusion tensors. More...
template<typename t >
CImg< Tfloat >	get_blur_anisotropic (const CImg< t > &G, const float amplitude=60, const float dl=0.8f, const float da=30, const float gauss_prec=2, const unsigned int interpolation_type=0, const bool is_fast_approx=true) const
	Blur image anisotropically, directed by a field of diffusion tensors [new-instance version].
CImg< T > &	blur_anisotropic (const float amplitude, const float sharpness=0.7f, const float anisotropy=0.6f, const float alpha=0.6f, const float sigma=1.1f, const float dl=0.8f, const float da=30, const float gauss_prec=2, const unsigned int interpolation_type=0, const bool is_fast_approx=true)
	Blur image anisotropically, in an edge-preserving way. More...
CImg< Tfloat >	get_blur_anisotropic (const float amplitude, const float sharpness=0.7f, const float anisotropy=0.6f, const float alpha=0.6f, const float sigma=1.1f, const float dl=0.8f, const float da=30, const float gauss_prec=2, const unsigned int interpolation_type=0, const bool is_fast_approx=true) const
	Blur image anisotropically, in an edge-preserving way [new-instance version].
template<typename t >
CImg< T > &	blur_bilateral (const CImg< t > &guide, const float sigma_x, const float sigma_y, const float sigma_z, const float sigma_r, const float sampling_x, const float sampling_y, const float sampling_z, const float sampling_r)
	Blur image, with the joint bilateral filter. More...
template<typename t >
CImg< Tfloat >	get_blur_bilateral (const CImg< t > &guide, const float sigma_x, const float sigma_y, const float sigma_z, const float sigma_r, const float sampling_x, const float sampling_y, const float sampling_z, const float sampling_r) const
	Blur image, with the joint bilateral filter [new-instance version].
template<typename t >
CImg< T > &	blur_bilateral (const CImg< t > &guide, const float sigma_s, const float sigma_r, const float sampling_s=0, const float sampling_r=0)
	Blur image using the joint bilateral filter. More...
template<typename t >
CImg< Tfloat >	get_blur_bilateral (const CImg< t > &guide, const float sigma_s, const float sigma_r, const float sampling_s=0, const float sampling_r=0) const
	Blur image using the bilateral filter [new-instance version].
CImg< T > &	boxfilter (const float boxsize, const int order, const char axis='x', const unsigned int boundary_conditions=1, const unsigned int nb_iter=1)
CImg< Tfloat >	get_boxfilter (const float boxsize, const int order, const char axis='x', const unsigned int boundary_conditions=1, const unsigned int nb_iter=1) const
CImg< T > &	blur_box (const float boxsize_x, const float boxsize_y, const float boxsize_z, const unsigned int boundary_conditions=1, const unsigned int nb_iter=1)
	Blur image with a box filter. More...
CImg< Tfloat >	get_blur_box (const float boxsize_x, const float boxsize_y, const float boxsize_z, const unsigned int boundary_conditions=1) const
	Blur image with a box filter [new-instance version].
CImg< T > &	blur_box (const float boxsize, const unsigned int boundary_conditions=1)
	Blur image with a box filter. More...
CImg< Tfloat >	get_blur_box (const float boxsize, const unsigned int boundary_conditions=1) const
	Blur image with a box filter [new-instance version].
template<typename t >
CImg< T > &	blur_guided (const CImg< t > &guide, const float radius, const float regularization)
	Blur image, with the image guided filter. More...
template<typename t >
CImg< Tfloat >	get_blur_guided (const CImg< t > &guide, const float radius, const float regularization) const
	Blur image, with the image guided filter [new-instance version].
template<typename t >
CImg< T > &	blur_patch (const CImg< t > &guide, const float sigma_s, const float sigma_r, const unsigned int patch_size=3, const unsigned int lookup_size=4, const float smoothness=0, const bool is_fast_approx=true)
	Blur image using patch-based space. More...
template<typename t >
CImg< Tfloat >	get_blur_patch (const CImg< t > &guide, const float sigma_s, const float sigma_r, const unsigned int patch_size=3, const unsigned int lookup_size=4, const float smoothness=0, const bool is_fast_approx=true) const
	Blur image using patch-based space [new-instance version].
CImg< T > &	blur_patch (const float sigma_s, const float sigma_r, const unsigned int patch_size=3, const unsigned int lookup_size=4, const float smoothness=0, const bool is_fast_approx=true)
	Blur image using patch-based space [simplification].
CImg< Tfloat >	get_blur_patch (const float sigma_s, const float sigma_r, const unsigned int patch_size=3, const unsigned int lookup_size=4, const float smoothness=0, const bool is_fast_approx=true) const
	Blur image using patch-based space [simplification] [new-instance version].
CImg< T > &	blur_median (const unsigned int n, const float threshold=0)
	Blur image with the median filter. More...
CImg< T >	get_blur_median (const unsigned int n, const float threshold=0) const
	Blur image with the median filter [new-instance version].
CImg< T > &	sharpen (const float amplitude, const bool sharpen_type=false, const float edge=1, const float alpha=0, const float sigma=0)
	Sharpen image. More...
CImg< T >	get_sharpen (const float amplitude, const bool sharpen_type=false, const float edge=1, const float alpha=0, const float sigma=0) const
	Sharpen image [new-instance version].
CImgList< Tfloat >	get_gradient (const char *const axes=0, const int scheme=0) const
	Return image gradient. More...
CImgList< Tfloat >	get_hessian (const char *const axes=0) const
	Return image hessian. More...
CImg< T > &	laplacian ()
	Compute image Laplacian.
CImg< Tfloat >	get_laplacian () const
	Compute image Laplacian [new-instance version].
CImg< T > &	structure_tensors (const bool is_fwbw_scheme=false)
	Compute the structure tensor field of an image. More...
CImg< Tfloat >	get_structure_tensors (const bool is_fwbw_scheme=false) const
	Compute the structure tensor field of an image [new-instance version].
CImg< T > &	diffusion_tensors (const float sharpness=0.7f, const float anisotropy=0.6f, const float alpha=0.6f, const float sigma=1.1f, const bool is_sqrt=false)
	Compute field of diffusion tensors for edge-preserving smoothing. More...
CImg< Tfloat >	get_diffusion_tensors (const float sharpness=0.7f, const float anisotropy=0.6f, const float alpha=0.6f, const float sigma=1.1f, const bool is_sqrt=false) const
	Compute field of diffusion tensors for edge-preserving smoothing [new-instance version].
CImg< T > &	displacement (const CImg< T > &source, const float smoothness=0.1f, const float precision=5.f, const unsigned int nb_scales=0, const unsigned int iteration_max=10000, const bool is_backward=false, const CImg< floatT > &guide=CImg< floatT >::const_empty())
	Estimate displacement field between two images. More...
CImg< floatT >	get_displacement (const CImg< T > &source, const float smoothness=0.1f, const float precision=5.f, const unsigned int nb_scales=0, const unsigned int iteration_max=10000, const bool is_backward=false, const CImg< floatT > &guide=CImg< floatT >::const_empty()) const
	Estimate displacement field between two images [new-instance version].
template<typename t1 , typename t2 >
CImg< T > &	matchpatch (const CImg< T > &patch_image, const unsigned int patch_width, const unsigned int patch_height, const unsigned int patch_depth, const unsigned int nb_iterations, const unsigned int nb_randoms, const float patch_penalization, const CImg< t1 > &guide, CImg< t2 > &matching_score)
	Compute correspondence map between two images, using a patch-matching algorithm. More...
template<typename t1 , typename t2 >
CImg< intT >	get_matchpatch (const CImg< T > &patch_image, const unsigned int patch_width, const unsigned int patch_height, const unsigned int patch_depth, const unsigned int nb_iterations, const unsigned int nb_randoms, const float patch_penalization, const CImg< t1 > &guide, CImg< t2 > &matching_score) const
	Compute correspondence map between two images, using the patch-match algorithm [new-instance version].
template<typename t >
CImg< T > &	matchpatch (const CImg< T > &patch_image, const unsigned int patch_width, const unsigned int patch_height, const unsigned int patch_depth, const unsigned int nb_iterations=5, const unsigned int nb_randoms=5, const float patch_penalization=0, const CImg< t > &guide=CImg< t >::const_empty())
	Compute correspondence map between two images, using the patch-match algorithm [overloading].
template<typename t >
CImg< intT >	get_matchpatch (const CImg< T > &patch_image, const unsigned int patch_width, const unsigned int patch_height, const unsigned int patch_depth, const unsigned int nb_iterations=5, const unsigned int nb_randoms=5, const float patch_penalization=0, const CImg< t > &guide=CImg< t >::const_empty()) const
	Compute correspondence map between two images, using the patch-match algorithm [overloading].
CImg< T > &	distance (const T &value, const unsigned int metric=2)
	Compute Euclidean distance function to a specified value. More...
CImg< Tfloat >	get_distance (const T &value, const unsigned int metric=2) const
	Compute distance to a specified value [new-instance version].
template<typename t >
CImg< T > &	distance (const T &value, const CImg< t > &metric_mask)
	Compute chamfer distance to a specified value, with a custom metric. More...
template<typename t >
CImg< Tfloat >	get_distance (const T &value, const CImg< t > &metric_mask) const
	Compute chamfer distance to a specified value, with a custom metric [new-instance version].
template<typename t , typename to >
CImg< T > &	distance_dijkstra (const T &value, const CImg< t > &metric, const bool is_high_connectivity, CImg< to > &return_path)
	Compute distance to a specified value, according to a custom metric (use dijkstra algorithm). More...
template<typename t , typename to >
CImg< typename cimg::superset< t, long >::type >	get_distance_dijkstra (const T &value, const CImg< t > &metric, const bool is_high_connectivity, CImg< to > &return_path) const
	Compute distance map to a specified value, according to a custom metric (use dijkstra algorithm) [new-instance version].
template<typename t >
CImg< T > &	distance_dijkstra (const T &value, const CImg< t > &metric, const bool is_high_connectivity=false)
	Compute distance map to a specified value, according to a custom metric (use dijkstra algorithm). [overloading].
template<typename t >
CImg< Tfloat >	get_distance_dijkstra (const T &value, const CImg< t > &metric, const bool is_high_connectivity=false) const
	Compute distance map to a specified value, according to a custom metric (use dijkstra algorithm). [new-instance version].
template<typename t >
CImg< T > &	distance_eikonal (const T &value, const CImg< t > &metric)
	Compute distance map to one source point, according to a custom metric (use fast marching algorithm). More...
template<typename t >
CImg< Tfloat >	get_distance_eikonal (const T &value, const CImg< t > &metric) const
	Compute distance map to one source point, according to a custom metric (use fast marching algorithm).
CImg< T > &	distance_eikonal (const unsigned int nb_iterations, const float band_size=0, const float time_step=0.5f)
	Compute distance function to 0-valued isophotes, using the Eikonal PDE. More...
CImg< Tfloat >	get_distance_eikonal (const unsigned int nb_iterations, const float band_size=0, const float time_step=0.5f) const
	Compute distance function to 0-valued isophotes, using the Eikonal PDE [new-instance version].
CImg< T > &	haar (const char axis, const bool invert=false, const unsigned int nb_scales=1)
	Compute Haar multiscale wavelet transform. More...
CImg< Tfloat >	get_haar (const char axis, const bool invert=false, const unsigned int nb_scales=1) const
	Compute Haar multiscale wavelet transform [new-instance version].
CImg< T > &	haar (const bool invert=false, const unsigned int nb_scales=1)
	Compute Haar multiscale wavelet transform [overloading]. More...
CImg< Tfloat >	get_haar (const bool invert=false, const unsigned int nb_scales=1) const
	Compute Haar multiscale wavelet transform [new-instance version].
CImgList< Tfloat >	get_FFT (const char axis, const bool is_inverse=false) const
	Compute 1D Fast Fourier Transform, along a specified axis. More...
CImgList< Tfloat >	get_FFT (const bool is_inverse=false) const
	Compute n-D Fast Fourier Transform.

3D Objects Management
template<typename tf , typename tfunc >
static CImg< floatT >	isoline3d (CImgList< tf > &primitives, const tfunc &func, const float isovalue, const float x0, const float y0, const float x1, const float y1, const int size_x=256, const int size_y=256)
	Compute isolines of a function, as a 3D object. More...
template<typename tv , typename tf , typename tfunc >
static void	isoline3d (tv &add_vertex, tf &add_segment, const tfunc &func, const float isovalue, const float x0, const float y0, const float x1, const float y1, const int size_x, const int size_y)
	Compute isolines of a function, as a 3D object. More...
template<typename tf >
static CImg< floatT >	isoline3d (CImgList< tf > &primitives, const char *const expression, const float isovalue, const float x0, const float y0, const float x1, const float y1, const int size_x=256, const int size_y=256)
	Compute isolines of a function, as a 3D object [overloading].
template<typename tf , typename tfunc >
static CImg< floatT >	isosurface3d (CImgList< tf > &primitives, const tfunc &func, const float isovalue, const float x0, const float y0, const float z0, const float x1, const float y1, const float z1, const int size_x=32, const int size_y=32, const int size_z=32)
	Compute isosurface of a function, as a 3D object. More...
template<typename tv , typename tf , typename tfunc >
static void	isosurface3d (tv &add_vertex, tf &add_triangle, const tfunc &func, const float isovalue, const float x0, const float y0, const float z0, const float x1, const float y1, const float z1, const int size_x, const int size_y, const int size_z)
	Compute isosurface of a function, as a 3D object. More...
template<typename tf >
static CImg< floatT >	isosurface3d (CImgList< tf > &primitives, const char *const expression, const float isovalue, const float x0, const float y0, const float z0, const float x1, const float y1, const float z1, const int dx=32, const int dy=32, const int dz=32)
	Compute isosurface of a function, as a 3D object [overloading].
template<typename tf , typename tfunc >
static CImg< floatT >	elevation3d (CImgList< tf > &primitives, const tfunc &func, const float x0, const float y0, const float x1, const float y1, const int size_x=256, const int size_y=256)
	Compute 3D elevation of a function as a 3D object. More...
template<typename tf >
static CImg< floatT >	elevation3d (CImgList< tf > &primitives, const char *const expression, const float x0, const float y0, const float x1, const float y1, const int size_x=256, const int size_y=256)
	Compute 3D elevation of a function, as a 3D object [overloading].
template<typename tf >
static CImg< floatT >	box3d (CImgList< tf > &primitives, const float size_x=200, const float size_y=100, const float size_z=100)
	Generate a 3D box object. More...
template<typename tf >
static CImg< floatT >	cone3d (CImgList< tf > &primitives, const float radius=50, const float size_z=100, const unsigned int subdivisions=24)
	Generate a 3D cone. More...
template<typename tf >
static CImg< floatT >	cylinder3d (CImgList< tf > &primitives, const float radius=50, const float size_z=100, const unsigned int subdivisions=24)
	Generate a 3D cylinder. More...
template<typename tf >
static CImg< floatT >	torus3d (CImgList< tf > &primitives, const float radius1=100, const float radius2=30, const unsigned int subdivisions1=24, const unsigned int subdivisions2=12)
	Generate a 3D torus. More...
template<typename tf >
static CImg< floatT >	plane3d (CImgList< tf > &primitives, const float size_x=100, const float size_y=100, const unsigned int subdivisions_x=10, const unsigned int subdivisions_y=10)
	Generate a 3D XY-plane. More...
template<typename tf >
static CImg< floatT >	sphere3d (CImgList< tf > &primitives, const float radius=50, const unsigned int subdivisions=3)
	Generate a 3D sphere. More...
template<typename tf , typename t >
static CImg< floatT >	ellipsoid3d (CImgList< tf > &primitives, const CImg< t > &tensor, const unsigned int subdivisions=3)
	Generate a 3D ellipsoid. More...
CImg< T > &	rotate_object3d (const float x, const float y, const float z, const float w, const bool is_quaternion=false)
	Rotate 3D object's vertices. More...
CImg< Tfloat >	get_rotate_object3d (const float x, const float y, const float z, const float w, const bool is_quaternion=false) const
CImg< T > &	shift_object3d (const float tx, const float ty=0, const float tz=0)
	Shift 3D object's vertices. More...
CImg< Tfloat >	get_shift_object3d (const float tx, const float ty=0, const float tz=0) const
	Shift 3D object's vertices [new-instance version].
CImg< T > &	shift_object3d ()
	Shift 3D object's vertices, so that it becomes centered. More...
CImg< Tfloat >	get_shift_object3d () const
	Shift 3D object's vertices, so that it becomes centered [new-instance version].
CImg< T > &	resize_object3d (const float sx, const float sy=-100, const float sz=-100)
	Resize 3D object. More...
CImg< Tfloat >	get_resize_object3d (const float sx, const float sy=-100, const float sz=-100) const
	Resize 3D object [new-instance version].
CImg< T >	resize_object3d ()
	Resize 3D object to unit size.
CImg< Tfloat >	get_resize_object3d () const
	Resize 3D object to unit size [new-instance version].
template<typename tf , typename tp , typename tff >
CImg< T > &	append_object3d (CImgList< tf > &primitives, const CImg< tp > &obj_vertices, const CImgList< tff > &obj_primitives)
	Merge two 3D objects together. More...
template<typename tp , typename tc , typename tt , typename tx >
const CImg< T > &	texturize_object3d (CImgList< tp > &primitives, CImgList< tc > &colors, const CImg< tt > &texture, const CImg< tx > &coords=CImg< tx >::const_empty()) const
	Texturize primitives of a 3D object. More...
template<typename tf , typename tc , typename te >
CImg< floatT >	get_elevation3d (CImgList< tf > &primitives, CImgList< tc > &colors, const CImg< te > &elevation) const
	Generate a 3D elevation of the image instance. More...
template<typename tf , typename tc >
CImg< floatT >	get_projections3d (CImgList< tf > &primitives, CImgList< tc > &colors, const unsigned int x0, const unsigned int y0, const unsigned int z0, const bool normalize_colors=false) const
	Generate the 3D projection planes of the image instance. More...
template<typename tf >
CImg< floatT >	get_isoline3d (CImgList< tf > &primitives, const float isovalue, const int size_x=-100, const int size_y=-100) const
	Generate a isoline of the image instance as a 3D object. More...
template<typename tf >
CImg< floatT >	get_isosurface3d (CImgList< tf > &primitives, const float isovalue, const int size_x=-100, const int size_y=-100, const int size_z=-100) const
	Generate an isosurface of the image instance as a 3D object. More...
template<typename tp , typename tc , typename to >
CImg< T > &	object3dtoCImg3d (const CImgList< tp > &primitives, const CImgList< tc > &colors, const to &opacities, const bool full_check=true)
	Convert 3D object into a CImg3d representation. More...
template<typename tp , typename tc >
CImg< T > &	object3dtoCImg3d (const CImgList< tp > &primitives, const CImgList< tc > &colors, const bool full_check=true)
	Convert 3D object into a CImg3d representation [overloading].
template<typename tp >
CImg< T > &	object3dtoCImg3d (const CImgList< tp > &primitives, const bool full_check=true)
	Convert 3D object into a CImg3d representation [overloading].
CImg< T > &	object3dtoCImg3d (const bool full_check=true)
	Convert 3D object into a CImg3d representation [overloading].
template<typename tp , typename tc , typename to >
CImg< floatT >	get_object3dtoCImg3d (const CImgList< tp > &primitives, const CImgList< tc > &colors, const to &opacities, const bool full_check=true) const
	Convert 3D object into a CImg3d representation [new-instance version].
template<typename tp , typename tc >
CImg< floatT >	get_object3dtoCImg3d (const CImgList< tp > &primitives, const CImgList< tc > &colors, const bool full_check=true) const
	Convert 3D object into a CImg3d representation [overloading].
template<typename tp >
CImg< floatT >	get_object3dtoCImg3d (const CImgList< tp > &primitives, const bool full_check=true) const
	Convert 3D object into a CImg3d representation [overloading].
CImg< floatT >	get_object3dtoCImg3d (const bool full_check=true) const
	Convert 3D object into a CImg3d representation [overloading].
template<typename tp , typename tc , typename to >
CImg< T > &	CImg3dtoobject3d (CImgList< tp > &primitives, CImgList< tc > &colors, CImgList< to > &opacities, const bool full_check=true)
	Convert CImg3d representation into a 3D object. More...
template<typename tp , typename tc , typename to >
CImg< T >	get_CImg3dtoobject3d (CImgList< tp > &primitives, CImgList< tc > &colors, CImgList< to > &opacities, const bool full_check=true) const
	Convert CImg3d representation into a 3D object [new-instance version].

Drawing Functions
template<typename tc >
CImg< T > &	draw_point (const int x0, const int y0, const int z0, const tc *const color, const float opacity=1)
	Draw a 3D point. More...
template<typename tc >
CImg< T > &	draw_point (const int x0, const int y0, const tc *const color, const float opacity=1)
	Draw a 2D point [simplification].
template<typename t , typename tc >
CImg< T > &	draw_point (const CImg< t > &points, const tc *const color, const float opacity=1)
template<typename tc >
CImg< T > &	draw_line (int x0, int y0, int x1, int y1, const tc *const color, const float opacity=1, const unsigned int pattern=~0U, const bool init_hatch=true)
	Draw a 2D line. More...
template<typename tz , typename tc >
CImg< T > &	draw_line (CImg< tz > &zbuffer, int x0, int y0, const float z0, int x1, int y1, const float z1, const tc *const color, const float opacity=1, const unsigned int pattern=~0U, const bool init_hatch=true)
	Draw a 2D line, with z-buffering. More...
template<typename tc >
CImg< T > &	draw_line (int x0, int y0, int x1, int y1, const CImg< tc > &texture, int tx0, int ty0, int tx1, int ty1, const float opacity=1, const unsigned int pattern=~0U, const bool init_hatch=true)
	Draw a textured 2D line. More...
template<typename tc >
CImg< T > &	draw_line (int x0, int y0, const float z0, int x1, int y1, const float z1, const CImg< tc > &texture, const int tx0, const int ty0, const int tx1, const int ty1, const float opacity=1, const unsigned int pattern=~0U, const bool init_hatch=true)
	Draw a textured 2D line, with perspective correction. More...
template<typename tz , typename tc >
CImg< T > &	draw_line (CImg< tz > &zbuffer, int x0, int y0, const float z0, int x1, int y1, const float z1, const CImg< tc > &texture, const int tx0, const int ty0, const int tx1, const int ty1, const float opacity=1, const unsigned int pattern=~0U, const bool init_hatch=true)
	Draw a textured 2D line, with perspective correction and z-buffering. More...
template<typename tp , typename tc >
CImg< T > &	draw_line (const CImg< tp > &points, const tc *const color, const float opacity=1, const unsigned int pattern=~0U, const bool init_hatch=true)
	Draw a set of consecutive lines. More...
template<typename tc >
CImg< T > &	draw_arrow (const int x0, const int y0, const int x1, const int y1, const tc *const color, const float opacity=1, const float angle=30, const float length=-10, const unsigned int pattern=~0U)
	Draw a 2D arrow. More...
template<typename tc >
CImg< T > &	draw_spline (const int x0, const int y0, const float u0, const float v0, const int x1, const int y1, const float u1, const float v1, const tc *const color, const float opacity=1, const float precision=0.25, const unsigned int pattern=~0U, const bool init_hatch=true)
	Draw a 2D spline. More...
template<typename t >
CImg< T > &	draw_spline (const int x0, const int y0, const float u0, const float v0, const int x1, const int y1, const float u1, const float v1, const CImg< t > &texture, const int tx0, const int ty0, const int tx1, const int ty1, const float opacity=1, const float precision=4, const unsigned int pattern=~0U, const bool init_hatch=true)
	Draw a textured 2D spline. More...
template<typename tp , typename tt , typename tc >
CImg< T > &	draw_spline (const CImg< tp > &points, const CImg< tt > &tangents, const tc *const color, const float opacity=1, const bool is_closed_set=false, const float precision=4, const unsigned int pattern=~0U, const bool init_hatch=true)
	Draw a set of consecutive splines. More...
template<typename tp , typename tc >
CImg< T > &	draw_spline (const CImg< tp > &points, const tc *const color, const float opacity=1, const bool is_closed_set=false, const float precision=4, const unsigned int pattern=~0U, const bool init_hatch=true)
	Draw a set of consecutive splines [overloading]. More...
template<typename tc >
CImg< T > &	draw_triangle (const int x0, const int y0, const int x1, const int y1, const int x2, const int y2, const tc *const color, const float opacity=1)
	Draw a filled 2D triangle. More...
template<typename tc >
CImg< T > &	draw_triangle (const int x0, const int y0, const int x1, const int y1, const int x2, const int y2, const tc *const color, const float opacity, const unsigned int pattern)
	Draw a outlined 2D triangle. More...
template<typename tz , typename tc >
CImg< T > &	draw_triangle (CImg< tz > &zbuffer, int x0, int y0, const float z0, int x1, int y1, const float z1, int x2, int y2, const float z2, const tc *const color, const float opacity=1, const float brightness=1)
	Draw a filled 2D triangle, with z-buffering. More...
template<typename tc >
CImg< T > &	draw_triangle (int x0, int y0, int x1, int y1, int x2, int y2, const tc *const color, float bs0, float bs1, float bs2, const float opacity=1)
	Draw a Gouraud-shaded 2D triangle. More...
template<typename tz , typename tc >
CImg< T > &	draw_triangle (CImg< tz > &zbuffer, int x0, int y0, const float z0, int x1, int y1, const float z1, int x2, int y2, const float z2, const tc *const color, float bs0, float bs1, float bs2, float opacity=1)
	Draw a Gouraud-shaded 2D triangle, with z-buffering [overloading].
template<typename tc >
CImg< T > &	draw_triangle (int x0, int y0, int x1, int y1, int x2, int y2, const tc *color0, const tc *color1, const tc *color2, const float opacity=1)
	Draw a color-interpolated 2D triangle. More...
template<typename tc >
CImg< T > &	draw_triangle (int x0, int y0, int x1, int y1, int x2, int y2, const CImg< tc > &texture, int tx0, int ty0, int tx1, int ty1, int tx2, int ty2, const float opacity=1, const float brightness=1)
	Draw a textured 2D triangle. More...
template<typename tc >
CImg< T > &	draw_triangle (int x0, int y0, const float z0, int x1, int y1, const float z1, int x2, int y2, const float z2, const CImg< tc > &texture, int tx0, int ty0, int tx1, int ty1, int tx2, int ty2, const float opacity=1, const float brightness=1)
	Draw a 2D textured triangle, with perspective correction.
template<typename tz , typename tc >
CImg< T > &	draw_triangle (CImg< tz > &zbuffer, int x0, int y0, const float z0, int x1, int y1, const float z1, int x2, int y2, const float z2, const CImg< tc > &texture, int tx0, int ty0, int tx1, int ty1, int tx2, int ty2, const float opacity=1, const float brightness=1)
	Draw a textured 2D triangle, with perspective correction and z-buffering.
template<typename tc , typename tl >
CImg< T > &	draw_triangle (int x0, int y0, int x1, int y1, int x2, int y2, const tc *const color, const CImg< tl > &light, int lx0, int ly0, int lx1, int ly1, int lx2, int ly2, const float opacity=1)
	Draw a Phong-shaded 2D triangle. More...
template<typename tz , typename tc , typename tl >
CImg< T > &	draw_triangle (CImg< tz > &zbuffer, int x0, int y0, const float z0, int x1, int y1, const float z1, int x2, int y2, const float z2, const tc *const color, const CImg< tl > &light, int lx0, int ly0, int lx1, int ly1, int lx2, int ly2, const float opacity=1)
	Draw a Phong-shaded 2D triangle, with z-buffering.
template<typename tc >
CImg< T > &	draw_triangle (int x0, int y0, int x1, int y1, int x2, int y2, const CImg< tc > &texture, int tx0, int ty0, int tx1, int ty1, int tx2, int ty2, float bs0, float bs1, float bs2, const float opacity=1)
	Draw a textured Gouraud-shaded 2D triangle. More...
template<typename tc >
CImg< T > &	draw_triangle (int x0, int y0, const float z0, int x1, int y1, const float z1, int x2, int y2, const float z2, const CImg< tc > &texture, int tx0, int ty0, int tx1, int ty1, int tx2, int ty2, float bs0, float bs1, float bs2, const float opacity=1)
	Draw a textured Gouraud-shaded 2D triangle, with perspective correction [overloading].
template<typename tz , typename tc >
CImg< T > &	draw_triangle (CImg< tz > &zbuffer, int x0, int y0, const float z0, int x1, int y1, const float z1, int x2, int y2, const float z2, const CImg< tc > &texture, int tx0, int ty0, int tx1, int ty1, int tx2, int ty2, float bs0, float bs1, float bs2, const float opacity=1)
	Draw a textured Gouraud-shaded 2D triangle, with perspective correction and z-buffering [overloading].
template<typename tc , typename tl >
CImg< T > &	draw_triangle (int x0, int y0, int x1, int y1, int x2, int y2, const CImg< tc > &texture, int tx0, int ty0, int tx1, int ty1, int tx2, int ty2, const CImg< tl > &light, int lx0, int ly0, int lx1, int ly1, int lx2, int ly2, const float opacity=1)
	Draw a textured Phong-shaded 2D triangle. More...
template<typename tc , typename tl >
CImg< T > &	draw_triangle (int x0, int y0, const float z0, int x1, int y1, const float z1, int x2, int y2, const float z2, const CImg< tc > &texture, int tx0, int ty0, int tx1, int ty1, int tx2, int ty2, const CImg< tl > &light, int lx0, int ly0, int lx1, int ly1, int lx2, int ly2, const float opacity=1)
	Draw a textured Phong-shaded 2D triangle, with perspective correction.
template<typename tz , typename tc , typename tl >
CImg< T > &	draw_triangle (CImg< tz > &zbuffer, int x0, int y0, const float z0, int x1, int y1, const float z1, int x2, int y2, const float z2, const CImg< tc > &texture, int tx0, int ty0, int tx1, int ty1, int tx2, int ty2, const CImg< tl > &light, int lx0, int ly0, int lx1, int ly1, int lx2, int ly2, const float opacity=1)
	Draw a textured Phong-shaded 2D triangle, with perspective correction and z-buffering.
CImg< T > &	draw_rectangle (const int x0, const int y0, const int z0, const int c0, const int x1, const int y1, const int z1, const int c1, const T val, const float opacity=1)
	Draw a filled 4D rectangle. More...
template<typename tc >
CImg< T > &	draw_rectangle (const int x0, const int y0, const int z0, const int x1, const int y1, const int z1, const tc *const color, const float opacity=1)
	Draw a filled 3D rectangle. More...
template<typename tc >
CImg< T > &	draw_rectangle (const int x0, const int y0, const int x1, const int y1, const tc *const color, const float opacity=1)
	Draw a filled 2D rectangle. More...
template<typename tc >
CImg< T > &	draw_rectangle (const int x0, const int y0, const int x1, const int y1, const tc *const color, const float opacity, const unsigned int pattern)
	Draw a outlined 2D rectangle [overloading].
template<typename tp , typename tc >
CImg< T > &	draw_polygon (const CImg< tp > &points, const tc *const color, const float opacity=1)
	Draw a filled 2D polygon. More...
template<typename tp , typename tc >
CImg< T > &	draw_polygon (const CImg< tp > &points, const tc *const color, const float opacity, const unsigned int pattern)
	Draw a outlined 2D or 3D polygon [overloading].
template<typename tc >
CImg< T > &	draw_ellipse (const int x0, const int y0, const float r1, const float r2, const float angle, const tc *const color, const float opacity=1)
	Draw a filled 2D ellipse. More...
template<typename t , typename tc >
CImg< T > &	draw_ellipse (const int x0, const int y0, const CImg< t > &tensor, const tc *const color, const float opacity=1)
	Draw a filled 2D ellipse [overloading]. More...
template<typename tc >
CImg< T > &	draw_ellipse (const int x0, const int y0, const float r1, const float r2, const float angle, const tc *const color, const float opacity, const unsigned int pattern)
	Draw an outlined 2D ellipse. More...
template<typename t , typename tc >
CImg< T > &	draw_ellipse (const int x0, const int y0, const CImg< t > &tensor, const tc *const color, const float opacity, const unsigned int pattern)
	Draw an outlined 2D ellipse [overloading]. More...
template<typename tc >
CImg< T > &	draw_circle (const int x0, const int y0, int radius, const tc *const color, const float opacity=1)
	Draw a filled 2D circle. More...
template<typename tc >
CImg< T > &	draw_circle (const int x0, const int y0, int radius, const tc *const color, const float opacity, const unsigned int pattern)
	Draw an outlined 2D circle. More...
template<typename t >
CImg< T > &	draw_image (const int x0, const int y0, const int z0, const int c0, const CImg< t > &sprite, const float opacity=1)
	Draw an image. More...
CImg< T > &	draw_image (const int x0, const int y0, const int z0, const int c0, const CImg< T > &sprite, const float opacity=1)
	Draw an image [specialization].
template<typename t >
CImg< T > &	draw_image (const int x0, const int y0, const int z0, const CImg< t > &sprite, const float opacity=1)
	Draw an image [overloading].
template<typename t >
CImg< T > &	draw_image (const int x0, const int y0, const CImg< t > &sprite, const float opacity=1)
	Draw an image [overloading].
template<typename t >
CImg< T > &	draw_image (const int x0, const CImg< t > &sprite, const float opacity=1)
	Draw an image [overloading].
template<typename t >
CImg< T > &	draw_image (const CImg< t > &sprite, const float opacity=1)
	Draw an image [overloading].
template<typename ti , typename tm >
CImg< T > &	draw_image (const int x0, const int y0, const int z0, const int c0, const CImg< ti > &sprite, const CImg< tm > &mask, const float opacity=1, const float mask_max_value=1)
	Draw a masked image. More...
template<typename ti , typename tm >
CImg< T > &	draw_image (const int x0, const int y0, const int z0, const CImg< ti > &sprite, const CImg< tm > &mask, const float opacity=1, const float mask_max_value=1)
	Draw a masked image [overloading].
template<typename ti , typename tm >
CImg< T > &	draw_image (const int x0, const int y0, const CImg< ti > &sprite, const CImg< tm > &mask, const float opacity=1, const float mask_max_value=1)
	Draw a image [overloading].
template<typename ti , typename tm >
CImg< T > &	draw_image (const int x0, const CImg< ti > &sprite, const CImg< tm > &mask, const float opacity=1, const float mask_max_value=1)
	Draw a image [overloading].
template<typename ti , typename tm >
CImg< T > &	draw_image (const CImg< ti > &sprite, const CImg< tm > &mask, const float opacity=1, const float mask_max_value=1)
	Draw an image.
template<typename tc1 , typename tc2 , typename t >
CImg< T > &	draw_text (const int x0, const int y0, const char *const text, const tc1 *const foreground_color, const tc2 *const background_color, const float opacity, const CImgList< t > *const font,...)
	Draw a text string. More...
template<typename tc , typename t >
CImg< T > &	draw_text (const int x0, const int y0, const char *const text, const tc *const foreground_color, const int, const float opacity, const CImgList< t > *const font,...)
	Draw a text string [overloading]. More...
template<typename tc , typename t >
CImg< T > &	draw_text (const int x0, const int y0, const char *const text, const int, const tc *const background_color, const float opacity, const CImgList< t > *const font,...)
	Draw a text string [overloading]. More...
template<typename tc1 , typename tc2 >
CImg< T > &	draw_text (const int x0, const int y0, const char *const text, const tc1 *const foreground_color, const tc2 *const background_color, const float opacity=1, const unsigned int font_height=13,...)
	Draw a text string [overloading]. More...
template<typename tc >
CImg< T > &	draw_text (const int x0, const int y0, const char *const text, const tc *const foreground_color, const int background_color=0, const float opacity=1, const unsigned int font_height=13,...)
	Draw a text string [overloading].
template<typename tc >
CImg< T > &	draw_text (const int x0, const int y0, const char *const text, const int, const tc *const background_color, const float opacity=1, const unsigned int font_height=13,...)
	Draw a text string [overloading].
template<typename t1 , typename t2 >
CImg< T > &	draw_quiver (const CImg< t1 > &flow, const t2 *const color, const float opacity=1, const unsigned int sampling=25, const float factor=-20, const bool is_arrow=true, const unsigned int pattern=~0U)
	Draw a 2D vector field. More...
template<typename t1 , typename t2 >
CImg< T > &	draw_quiver (const CImg< t1 > &flow, const CImg< t2 > &color, const float opacity=1, const unsigned int sampling=25, const float factor=-20, const bool is_arrow=true, const unsigned int pattern=~0U)
	Draw a 2D vector field, using a field of colors. More...
template<typename t , typename tc >
CImg< T > &	draw_axis (const CImg< t > &values_x, const int y, const tc *const color, const float opacity=1, const unsigned int pattern=~0U, const unsigned int font_height=13, const bool allow_zero=true, const float round_x=0)
	Draw a labeled horizontal axis. More...
template<typename t , typename tc >
CImg< T > &	draw_axis (const int x, const CImg< t > &values_y, const tc *const color, const float opacity=1, const unsigned int pattern=~0U, const unsigned int font_height=13, const bool allow_zero=true, const float round_y=0)
	Draw a labeled vertical axis. More...
template<typename tx , typename ty , typename tc >
CImg< T > &	draw_axes (const CImg< tx > &values_x, const CImg< ty > &values_y, const tc *const color, const float opacity=1, const unsigned int pattern_x=~0U, const unsigned int pattern_y=~0U, const unsigned int font_height=13, const bool allow_zero=true, const float round_x=0, const float round_y=0)
	Draw labeled horizontal and vertical axes. More...
template<typename tc >
CImg< T > &	draw_axes (const float x0, const float x1, const float y0, const float y1, const tc *const color, const float opacity=1, const int subdivisionx=-60, const int subdivisiony=-60, const float precisionx=0, const float precisiony=0, const unsigned int pattern_x=~0U, const unsigned int pattern_y=~0U, const unsigned int font_height=13)
	Draw labeled horizontal and vertical axes [overloading].
template<typename tx , typename ty , typename tc >
CImg< T > &	draw_grid (const CImg< tx > &values_x, const CImg< ty > &values_y, const tc *const color, const float opacity=1, const unsigned int pattern_x=~0U, const unsigned int pattern_y=~0U)
	Draw 2D grid. More...
template<typename tc >
CImg< T > &	draw_grid (const float delta_x, const float delta_y, const float offsetx, const float offsety, const bool invertx, const bool inverty, const tc *const color, const float opacity=1, const unsigned int pattern_x=~0U, const unsigned int pattern_y=~0U)
	Draw 2D grid [simplification].
template<typename t , typename tc >
CImg< T > &	draw_graph (const CImg< t > &data, const tc *const color, const float opacity=1, const unsigned int plot_type=1, const int vertex_type=1, const double ymin=0, const double ymax=0, const unsigned int pattern=~0U)
	Draw 1D graph. More...
template<typename tc , typename t >
CImg< T > &	draw_fill (const int x0, const int y0, const int z0, const tc *const color, const float opacity, CImg< t > &region, const float tolerance=0, const bool is_high_connectivity=false)
	Draw filled 3D region with the flood fill algorithm. More...
template<typename tc >
CImg< T > &	draw_fill (const int x0, const int y0, const int z0, const tc *const color, const float opacity=1, const float tolerance=0, const bool is_high_connexity=false)
	Draw filled 3D region with the flood fill algorithm [simplification].
template<typename tc >
CImg< T > &	draw_fill (const int x0, const int y0, const tc *const color, const float opacity=1, const float tolerance=0, const bool is_high_connexity=false)
	Draw filled 2D region with the flood fill algorithm [simplification].
CImg< T > &	draw_plasma (const float alpha=1, const float beta=0, const unsigned int scale=8)
	Draw a random plasma texture. More...
template<typename tc >
CImg< T > &	draw_mandelbrot (const int x0, const int y0, const int x1, const int y1, const CImg< tc > &colormap, const float opacity=1, const double z0r=-2, const double z0i=-2, const double z1r=2, const double z1i=2, const unsigned int iteration_max=255, const bool is_normalized_iteration=false, const bool is_julia_set=false, const double param_r=0, const double param_i=0)
	Draw a quadratic Mandelbrot or Julia 2D fractal. More...
template<typename tc >
CImg< T > &	draw_mandelbrot (const CImg< tc > &colormap, const float opacity=1, const double z0r=-2, const double z0i=-2, const double z1r=2, const double z1i=2, const unsigned int iteration_max=255, const bool is_normalized_iteration=false, const bool is_julia_set=false, const double param_r=0, const double param_i=0)
	Draw a quadratic Mandelbrot or Julia 2D fractal [overloading].
template<typename tc >
CImg< T > &	draw_gaussian (const float xc, const float sigma, const tc *const color, const float opacity=1)
	Draw a 1D gaussian function. More...
template<typename t , typename tc >
CImg< T > &	draw_gaussian (const float xc, const float yc, const CImg< t > &tensor, const tc *const color, const float opacity=1)
	Draw a 2D gaussian function. More...
template<typename tc >
CImg< T > &	draw_gaussian (const int xc, const int yc, const float r1, const float r2, const float ru, const float rv, const tc *const color, const float opacity=1)
	Draw a 2D gaussian function [overloading].
template<typename tc >
CImg< T > &	draw_gaussian (const float xc, const float yc, const float sigma, const tc *const color, const float opacity=1)
	Draw a 2D gaussian function [overloading].
template<typename t , typename tc >
CImg< T > &	draw_gaussian (const float xc, const float yc, const float zc, const CImg< t > &tensor, const tc *const color, const float opacity=1)
	Draw a 3D gaussian function [overloading].
template<typename tc >
CImg< T > &	draw_gaussian (const float xc, const float yc, const float zc, const float sigma, const tc *const color, const float opacity=1)
	Draw a 3D gaussian function [overloading].
template<typename tp , typename tf , typename tc , typename to >
CImg< T > &	draw_object3d (const float x0, const float y0, const float z0, const CImg< tp > &vertices, const CImgList< tf > &primitives, const CImgList< tc > &colors, const CImg< to > &opacities, const unsigned int render_type=4, const bool is_double_sided=false, const float focale=700, const float lightx=0, const float lighty=0, const float lightz=-5e8, const float specular_lightness=0.2f, const float specular_shininess=0.1f, const float g_opacity=1)
	Draw a 3D object. More...
template<typename tp , typename tf , typename tc , typename to , typename tz >
CImg< T > &	draw_object3d (const float x0, const float y0, const float z0, const CImg< tp > &vertices, const CImgList< tf > &primitives, const CImgList< tc > &colors, const CImg< to > &opacities, const unsigned int render_type, const bool is_double_sided, const float focale, const float lightx, const float lighty, const float lightz, const float specular_lightness, const float specular_shininess, const float g_opacity, CImg< tz > &zbuffer)
	Draw a 3D object [simplification].
template<typename tp , typename tf , typename tc , typename to >
CImg< T > &	draw_object3d (const float x0, const float y0, const float z0, const CImg< tp > &vertices, const CImgList< tf > &primitives, const CImgList< tc > &colors, const CImgList< to > &opacities, const unsigned int render_type=4, const bool is_double_sided=false, const float focale=700, const float lightx=0, const float lighty=0, const float lightz=-5e8, const float specular_lightness=0.2f, const float specular_shininess=0.1f, const float g_opacity=1)
	Draw a 3D object [simplification].
template<typename tp , typename tf , typename tc , typename to , typename tz >
CImg< T > &	draw_object3d (const float x0, const float y0, const float z0, const CImg< tp > &vertices, const CImgList< tf > &primitives, const CImgList< tc > &colors, const CImgList< to > &opacities, const unsigned int render_type, const bool is_double_sided, const float focale, const float lightx, const float lighty, const float lightz, const float specular_lightness, const float specular_shininess, const float g_opacity, CImg< tz > &zbuffer)
	Draw a 3D object [simplification].
template<typename tp , typename tf , typename tc >
CImg< T > &	draw_object3d (const float x0, const float y0, const float z0, const CImg< tp > &vertices, const CImgList< tf > &primitives, const CImgList< tc > &colors, const unsigned int render_type=4, const bool is_double_sided=false, const float focale=700, const float lightx=0, const float lighty=0, const float lightz=-5e8, const float specular_lightness=0.2f, const float specular_shininess=0.1f, const float g_opacity=1)
	Draw a 3D object [simplification].
template<typename tp , typename tf , typename tc , typename tz >
CImg< T > &	draw_object3d (const float x0, const float y0, const float z0, const CImg< tp > &vertices, const CImgList< tf > &primitives, const CImgList< tc > &colors, const unsigned int render_type, const bool is_double_sided, const float focale, const float lightx, const float lighty, const float lightz, const float specular_lightness, const float specular_shininess, const float g_opacity, CImg< tz > &zbuffer)
	Draw a 3D object [simplification].

Data Input
static CImg< T >	get_load (const char *const filename)
	Load image from a file [new-instance version].
static CImg< T >	get_load_ascii (const char *const filename)
	Load image from an ascii file [in-place version].
static CImg< T >	get_load_ascii (std::FILE *const file)
	Loadimage from an ascii file [new-instance version].
static CImg< T >	get_load_dlm (const char *const filename)
	Load image from a DLM file [new-instance version].
static CImg< T >	get_load_dlm (std::FILE *const file)
	Load image from a DLM file [new-instance version].
static CImg< T >	get_load_bmp (const char *const filename)
	Load image from a BMP file [new-instance version].
static CImg< T >	get_load_bmp (std::FILE *const file)
	Load image from a BMP file [new-instance version].
static CImg< T >	get_load_jpeg (const char *const filename)
	Load image from a JPEG file [new-instance version].
static CImg< T >	get_load_jpeg (std::FILE *const file)
	Load image from a JPEG file [new-instance version].
static CImg< T >	get_load_magick (const char *const filename)
	Load image from a file, using Magick++ library [new-instance version].
static CImg< T >	get_load_png (const char *const filename, unsigned int *const bits_per_value=0)
	Load image from a PNG file [new-instance version].
static CImg< T >	get_load_png (std::FILE *const file, unsigned int *const bits_per_value=0)
	Load image from a PNG file [new-instance version].
static CImg< T >	get_load_pnm (const char *const filename)
	Load image from a PNM file [new-instance version].
static CImg< T >	get_load_pnm (std::FILE *const file)
	Load image from a PNM file [new-instance version].
static CImg< T >	get_load_pfm (const char *const filename)
	Load image from a PFM file [new-instance version].
static CImg< T >	get_load_pfm (std::FILE *const file)
	Load image from a PFM file [new-instance version].
static CImg< T >	get_load_rgb (const char *const filename, const unsigned int dimw, const unsigned int dimh=1)
	Load image from a RGB file [new-instance version].
static CImg< T >	get_load_rgb (std::FILE *const file, const unsigned int dimw, const unsigned int dimh=1)
	Load image from a RGB file [new-instance version].
static CImg< T >	get_load_rgba (const char *const filename, const unsigned int dimw, const unsigned int dimh=1)
	Load image from a RGBA file [new-instance version].
static CImg< T >	get_load_rgba (std::FILE *const file, const unsigned int dimw, const unsigned int dimh=1)
	Load image from a RGBA file [new-instance version].
static CImg< T >	get_load_tiff (const char *const filename, const unsigned int first_frame=0, const unsigned int last_frame=~0U, const unsigned int step_frame=1, unsigned int *const bits_per_value=0, float *const voxel_size=0, CImg< charT > *const description=0)
	Load image from a TIFF file [new-instance version].
static CImg< T >	get_load_minc2 (const char *const filename)
	Load image from a MINC2 file [new-instance version].
static CImg< T >	get_load_analyze (const char *const filename, float *const voxel_size=0)
	Load image from an ANALYZE7.5/NIFTI file [new-instance version].
static CImg< T >	get_load_analyze (std::FILE *const file, float *const voxel_size=0)
	Load image from an ANALYZE7.5/NIFTI file [new-instance version].
static CImg< T >	get_load_cimg (const char *const filename, const char axis='z', const float align=0)
	Load image from a .cimg[z] file [new-instance version]
static CImg< T >	get_load_cimg (std::FILE *const file, const char axis='z', const float align=0)
	Load image from a .cimg[z] file [new-instance version]
static CImg< T >	get_load_cimg (const char *const filename, const unsigned int n0, const unsigned int n1, const unsigned int x0, const unsigned int y0, const unsigned int z0, const unsigned int c0, const unsigned int x1, const unsigned int y1, const unsigned int z1, const unsigned int c1, const char axis='z', const float align=0)
	Load sub-images of a .cimg file [new-instance version].
static CImg< T >	get_load_cimg (std::FILE *const file, const unsigned int n0, const unsigned int n1, const unsigned int x0, const unsigned int y0, const unsigned int z0, const unsigned int c0, const unsigned int x1, const unsigned int y1, const unsigned int z1, const unsigned int c1, const char axis='z', const float align=0)
	Load sub-images of a .cimg file [new-instance version].
static CImg< T >	get_load_inr (const char *const filename, float *const voxel_size=0)
	Load image from an INRIMAGE-4 file [new-instance version].
static CImg< T >	get_load_inr (std::FILE *const file, float *voxel_size=0)
	Load image from an INRIMAGE-4 file [new-instance version].
static CImg< T >	get_load_exr (const char *const filename)
	Load image from a EXR file [new-instance version].
static CImg< T >	get_load_pandore (const char *const filename)
	Load image from a PANDORE-5 file [new-instance version].
static CImg< T >	get_load_pandore (std::FILE *const file)
	Load image from a PANDORE-5 file [new-instance version].
static CImg< T >	get_load_parrec (const char *const filename, const char axis='c', const float align=0)
	Load image from a PAR-REC (Philips) file [new-instance version].
static CImg< T >	get_load_raw (const char *const filename, const unsigned int size_x=0, const unsigned int size_y=1, const unsigned int size_z=1, const unsigned int size_c=1, const bool is_multiplexed=false, const bool invert_endianness=false, const ulongT offset=0)
	Load image from a raw binary file [new-instance version].
static CImg< T >	get_load_raw (std::FILE *const file, const unsigned int size_x=0, const unsigned int size_y=1, const unsigned int size_z=1, const unsigned int size_c=1, const bool is_multiplexed=false, const bool invert_endianness=false, const ulongT offset=0)
	Load image from a raw binary file [new-instance version].
static CImg< T >	get_load_yuv (const char *const filename, const unsigned int size_x, const unsigned int size_y=1, const unsigned int chroma_subsampling=444, const unsigned int first_frame=0, const unsigned int last_frame=~0U, const unsigned int step_frame=1, const bool yuv2rgb=true, const char axis='z')
	Load image sequence from a YUV file [new-instance version].
static CImg< T >	get_load_yuv (std::FILE *const file, const unsigned int size_x, const unsigned int size_y=1, const unsigned int chroma_subsampling=444, const unsigned int first_frame=0, const unsigned int last_frame=~0U, const unsigned int step_frame=1, const bool yuv2rgb=true, const char axis='z')
	Load image sequence from a YUV file [new-instance version].
template<typename tf , typename tc >
static CImg< T >	get_load_off (CImgList< tf > &primitives, CImgList< tc > &colors, const char *const filename)
	Load 3D object from a .OFF file [new-instance version].
template<typename tf , typename tc >
static CImg< T >	get_load_off (CImgList< tf > &primitives, CImgList< tc > &colors, std::FILE *const file)
	Load 3D object from a .OFF file [new-instance version].
static CImg< T >	get_load_video (const char *const filename, const unsigned int first_frame=0, const unsigned int last_frame=~0U, const unsigned int step_frame=1, const char axis='z', const float align=0)
	Load image sequence from a video file, using OpenCV library [new-instance version].
static CImg< T >	get_load_ffmpeg_external (const char *const filename, const char axis='z', const float align=0)
	Load image sequence using FFMPEG's external tool 'ffmpeg' [new-instance version].
static CImg< T >	get_load_gif_external (const char *const filename, const char axis='z', const float align=0)
	Load gif file, using ImageMagick or GraphicsMagick's external tool 'convert' [new-instance version].
static CImg< T >	get_load_heif (const char *const filename)
	Load image from a HEIC file [new-instance version].
static CImg< T >	get_load_graphicsmagick_external (const char *const filename)
	Load image using GraphicsMagick's external tool 'gm' [new-instance version].
static CImg< T >	get_load_gzip_external (const char *const filename)
	Load gzipped image file, using external tool 'gunzip' [new-instance version].
static CImg< T >	get_load_imagemagick_external (const char *const filename)
	Load image using ImageMagick's external tool 'convert' [new-instance version].
static CImg< T >	get_load_medcon_external (const char *const filename)
	Load image from a DICOM file, using Medcon's external tool 'medcon' [new-instance version].
static CImg< T >	get_load_pdf_external (const char *const filename, const unsigned int resolution=400)
	Load image from a .pdf file [new-instance version].
static CImg< T >	get_load_dcraw_external (const char *const filename)
	Load image from a RAW Color Camera file, using external tool 'dcraw' [new-instance version].
static CImg< T >	get_load_camera (const unsigned int camera_index=0, const unsigned int capture_width=0, const unsigned int capture_height=0, const unsigned int skip_frames=0, const bool release_camera=true)
	Load image from a camera stream, using OpenCV [new-instance version].
static CImg< T >	get_load_other (const char *const filename)
	Load image using various non-native ways [new-instance version].
CImg< T > &	select (CImgDisplay &disp, const unsigned int feature_type=2, unsigned int *const XYZ=0, const bool exit_on_anykey=false, const bool is_deep_selection_default=false)
	Launch simple interface to select a shape from an image. More...
CImg< T > &	select (const char *const title, const unsigned int feature_type=2, unsigned int *const XYZ=0, const bool exit_on_anykey=false, const bool is_deep_selection_default=false)
	Simple interface to select a shape from an image [overloading].
CImg< intT >	get_select (CImgDisplay &disp, const unsigned int feature_type=2, unsigned int *const XYZ=0, const bool exit_on_anykey=false, const bool is_deep_selection_default=false) const
	Simple interface to select a shape from an image [new-instance version].
CImg< intT >	get_select (const char *const title, const unsigned int feature_type=2, unsigned int *const XYZ=0, const bool exit_on_anykey=false, const bool is_deep_selection_default=false) const
	Simple interface to select a shape from an image [new-instance version].
CImg< intT >	get_select_graph (CImgDisplay &disp, const unsigned int plot_type=1, const unsigned int vertex_type=1, const char *const labelx=0, const double xmin=0, const double xmax=0, const char *const labely=0, const double ymin=0, const double ymax=0, const bool exit_on_anykey=false) const
	Select sub-graph in a graph.
CImg< T > &	load (const char *const filename)
	Load image from a file. More...
CImg< T > &	load_ascii (const char *const filename)
	Load image from an ascii file. More...
CImg< T > &	load_ascii (std::FILE *const file)
	Load image from an ascii file [overloading].
CImg< T > &	load_dlm (const char *const filename)
	Load image from a DLM file. More...
CImg< T > &	load_dlm (std::FILE *const file)
	Load image from a DLM file [overloading].
CImg< T > &	load_bmp (const char *const filename)
	Load image from a BMP file. More...
CImg< T > &	load_bmp (std::FILE *const file)
	Load image from a BMP file [overloading].
CImg< T > &	load_jpeg (const char *const filename)
	Load image from a JPEG file. More...
CImg< T > &	load_jpeg (std::FILE *const file)
	Load image from a JPEG file [overloading].
CImg< T > &	load_magick (const char *const filename)
	Load image from a file, using Magick++ library. More...
CImg< T > &	load_png (const char *const filename, unsigned int *const bits_per_value=0)
	Load image from a PNG file. More...
CImg< T > &	load_png (std::FILE *const file, unsigned int *const bits_per_value=0)
	Load image from a PNG file [overloading].
CImg< T > &	load_pnm (const char *const filename)
	Load image from a PNM file. More...
CImg< T > &	load_pnm (std::FILE *const file)
	Load image from a PNM file [overloading].
CImg< T > &	load_pfm (const char *const filename)
	Load image from a PFM file. More...
CImg< T > &	load_pfm (std::FILE *const file)
	Load image from a PFM file [overloading].
CImg< T > &	load_rgb (const char *const filename, const unsigned int dimw, const unsigned int dimh=1)
	Load image from a RGB file. More...
CImg< T > &	load_rgb (std::FILE *const file, const unsigned int dimw, const unsigned int dimh=1)
	Load image from a RGB file [overloading].
CImg< T > &	load_rgba (const char *const filename, const unsigned int dimw, const unsigned int dimh=1)
	Load image from a RGBA file. More...
CImg< T > &	load_rgba (std::FILE *const file, const unsigned int dimw, const unsigned int dimh=1)
	Load image from a RGBA file [overloading].
CImg< T > &	load_tiff (const char *const filename, const unsigned int first_frame=0, const unsigned int last_frame=~0U, const unsigned int step_frame=1, unsigned int *const bits_per_value=0, float *const voxel_size=0, CImg< charT > *const description=0)
	Load image from a TIFF file. More...
CImg< T > &	load_minc2 (const char *const filename)
	Load image from a MINC2 file. More...
CImg< T > &	load_analyze (const char *const filename, float *const voxel_size=0)
	Load image from an ANALYZE7.5/NIFTI file. More...
CImg< T > &	load_analyze (std::FILE *const file, float *const voxel_size=0)
	Load image from an ANALYZE7.5/NIFTI file [overloading].
CImg< T > &	load_cimg (const char *const filename, const char axis='z', const float align=0)
	Load image from a .cimg[z] file. More...
CImg< T > &	load_cimg (std::FILE *const file, const char axis='z', const float align=0)
	Load image from a .cimg[z] file [overloading].
CImg< T > &	load_cimg (const char *const filename, const unsigned int n0, const unsigned int n1, const unsigned int x0, const unsigned int y0, const unsigned int z0, const unsigned int c0, const unsigned int x1, const unsigned int y1, const unsigned int z1, const unsigned int c1, const char axis='z', const float align=0)
	Load sub-images of a .cimg file. More...
CImg< T > &	load_cimg (std::FILE *const file, const unsigned int n0, const unsigned int n1, const unsigned int x0, const unsigned int y0, const unsigned int z0, const unsigned int c0, const unsigned int x1, const unsigned int y1, const unsigned int z1, const unsigned int c1, const char axis='z', const float align=0)
	Load sub-images of a .cimg file [overloading].
CImg< T > &	load_inr (const char *const filename, float *const voxel_size=0)
	Load image from an INRIMAGE-4 file. More...
CImg< T > &	load_inr (std::FILE *const file, float *const voxel_size=0)
	Load image from an INRIMAGE-4 file [overloading].
CImg< T > &	load_exr (const char *const filename)
	Load image from a EXR file. More...
CImg< T > &	load_pandore (const char *const filename)
	Load image from a PANDORE-5 file. More...
CImg< T > &	load_pandore (std::FILE *const file)
	Load image from a PANDORE-5 file [overloading].
CImg< T > &	load_parrec (const char *const filename, const char axis='c', const float align=0)
	Load image from a PAR-REC (Philips) file. More...
CImg< T > &	load_raw (const char *const filename, const unsigned int size_x=0, const unsigned int size_y=1, const unsigned int size_z=1, const unsigned int size_c=1, const bool is_multiplexed=false, const bool invert_endianness=false, const ulongT offset=0)
	Load image from a raw binary file. More...
CImg< T > &	load_raw (std::FILE *const file, const unsigned int size_x=0, const unsigned int size_y=1, const unsigned int size_z=1, const unsigned int size_c=1, const bool is_multiplexed=false, const bool invert_endianness=false, const ulongT offset=0)
	Load image from a raw binary file [overloading].
CImg< T > &	load_yuv (const char *const filename, const unsigned int size_x, const unsigned int size_y=1, const unsigned int chroma_subsampling=444, const unsigned int first_frame=0, const unsigned int last_frame=~0U, const unsigned int step_frame=1, const bool yuv2rgb=true, const char axis='z')
	Load image sequence from a YUV file. More...
CImg< T > &	load_yuv (std::FILE *const file, const unsigned int size_x, const unsigned int size_y=1, const unsigned int chroma_subsampling=444, const unsigned int first_frame=0, const unsigned int last_frame=~0U, const unsigned int step_frame=1, const bool yuv2rgb=true, const char axis='z')
	Load image sequence from a YUV file [overloading].
template<typename tf , typename tc >
CImg< T > &	load_off (CImgList< tf > &primitives, CImgList< tc > &colors, const char *const filename)
	Load 3D object from a .OFF file. More...
template<typename tf , typename tc >
CImg< T > &	load_off (CImgList< tf > &primitives, CImgList< tc > &colors, std::FILE *const file)
	Load 3D object from a .OFF file [overloading].
CImg< T > &	load_video (const char *const filename, const unsigned int first_frame=0, const unsigned int last_frame=~0U, const unsigned int step_frame=1, const char axis='z', const float align=0)
	Load image sequence from a video file, using OpenCV library. More...
CImg< T > &	load_ffmpeg_external (const char *const filename, const char axis='z', const float align=0)
	Load image sequence using FFMPEG's external tool 'ffmpeg'. More...
CImg< T > &	load_gif_external (const char *const filename, const char axis='z', const float align=0)
	Load gif file, using Imagemagick or GraphicsMagicks's external tools. More...
CImg< T > &	load_heif (const char *const filename)
	Load image from a HEIC file. More...
CImg< T > &	load_graphicsmagick_external (const char *const filename)
	Load image using GraphicsMagick's external tool 'gm'. More...
CImg< T > &	load_gzip_external (const char *const filename)
	Load gzipped image file, using external tool 'gunzip'. More...
CImg< T > &	load_imagemagick_external (const char *const filename)
	Load image using ImageMagick's external tool 'convert'. More...
CImg< T > &	load_medcon_external (const char *const filename)
	Load image from a DICOM file, using Medcon's external tool 'medcon'. More...
CImg< T > &	load_pdf_external (const char *const filename, const unsigned int resolution=400)
	Load image from a .pdf file. More...
CImg< T > &	load_dcraw_external (const char *const filename)
	Load image from a RAW Color Camera file, using external tool 'dcraw'. More...
CImg< T > &	load_camera (const unsigned int camera_index=0, const unsigned int capture_width=0, const unsigned int capture_height=0, const unsigned int skip_frames=0, const bool release_camera=true)
	Load image from a camera stream, using OpenCV. More...
CImg< T > &	load_other (const char *const filename)
	Load image using various non-native ways. More...

Data Output
static void	save_empty_cimg (const char *const filename, const unsigned int dx, const unsigned int dy=1, const unsigned int dz=1, const unsigned int dc=1)
	Save blank image as a .cimg file. More...
static void	save_empty_cimg (std::FILE *const file, const unsigned int dx, const unsigned int dy=1, const unsigned int dz=1, const unsigned int dc=1)
	Save blank image as a .cimg file [overloading]. More...
const CImg< T > &	print (const char *const title=0, const bool display_stats=true) const
	Display information about the image data. More...
const CImg< T > &	display (CImgDisplay &disp) const
	Display image into a CImgDisplay window. More...
const CImg< T > &	display (CImgDisplay &disp, const bool display_info, unsigned int *const XYZ=0, const bool exit_on_anykey=false) const
	Display image into a CImgDisplay window, in an interactive way. More...
const CImg< T > &	display (const char *const title=0, const bool display_info=true, unsigned int *const XYZ=0, const bool exit_on_anykey=false) const
	Display image into an interactive window. More...
template<typename tp , typename tf , typename tc , typename to >
const CImg< T > &	display_object3d (CImgDisplay &disp, const CImg< tp > &vertices, const CImgList< tf > &primitives, const CImgList< tc > &colors, const to &opacities, const bool centering=true, const int render_static=4, const int render_motion=1, const bool is_double_sided=true, const float focale=700, const float light_x=0, const float light_y=0, const float light_z=-5e8f, const float specular_lightness=0.2f, const float specular_shininess=0.1f, const bool display_axes=true, float *const pose_matrix=0, const bool exit_on_anykey=false) const
	Display object 3D in an interactive window. More...
template<typename tp , typename tf , typename tc , typename to >
const CImg< T > &	display_object3d (const char *const title, const CImg< tp > &vertices, const CImgList< tf > &primitives, const CImgList< tc > &colors, const to &opacities, const bool centering=true, const int render_static=4, const int render_motion=1, const bool is_double_sided=true, const float focale=700, const float light_x=0, const float light_y=0, const float light_z=-5e8f, const float specular_lightness=0.2f, const float specular_shininess=0.1f, const bool display_axes=true, float *const pose_matrix=0, const bool exit_on_anykey=false) const
	Display object 3D in an interactive window [simplification].
template<typename tp , typename tf , typename tc >
const CImg< T > &	display_object3d (CImgDisplay &disp, const CImg< tp > &vertices, const CImgList< tf > &primitives, const CImgList< tc > &colors, const bool centering=true, const int render_static=4, const int render_motion=1, const bool is_double_sided=true, const float focale=700, const float light_x=0, const float light_y=0, const float light_z=-5e8f, const float specular_lightness=0.2f, const float specular_shininess=0.1f, const bool display_axes=true, float *const pose_matrix=0, const bool exit_on_anykey=false) const
	Display object 3D in an interactive window [simplification].
template<typename tp , typename tf , typename tc >
const CImg< T > &	display_object3d (const char *const title, const CImg< tp > &vertices, const CImgList< tf > &primitives, const CImgList< tc > &colors, const bool centering=true, const int render_static=4, const int render_motion=1, const bool is_double_sided=true, const float focale=700, const float light_x=0, const float light_y=0, const float light_z=-5e8f, const float specular_lightness=0.2f, const float specular_shininess=0.1f, const bool display_axes=true, float *const pose_matrix=0, const bool exit_on_anykey=false) const
	Display object 3D in an interactive window [simplification].
template<typename tp , typename tf >
const CImg< T > &	display_object3d (CImgDisplay &disp, const CImg< tp > &vertices, const CImgList< tf > &primitives, const bool centering=true, const int render_static=4, const int render_motion=1, const bool is_double_sided=true, const float focale=700, const float light_x=0, const float light_y=0, const float light_z=-5e8f, const float specular_lightness=0.2f, const float specular_shininess=0.1f, const bool display_axes=true, float *const pose_matrix=0, const bool exit_on_anykey=false) const
	Display object 3D in an interactive window [simplification].
template<typename tp , typename tf >
const CImg< T > &	display_object3d (const char *const title, const CImg< tp > &vertices, const CImgList< tf > &primitives, const bool centering=true, const int render_static=4, const int render_motion=1, const bool is_double_sided=true, const float focale=700, const float light_x=0, const float light_y=0, const float light_z=-5e8f, const float specular_lightness=0.2f, const float specular_shininess=0.1f, const bool display_axes=true, float *const pose_matrix=0, const bool exit_on_anykey=false) const
	Display object 3D in an interactive window [simplification].
template<typename tp >
const CImg< T > &	display_object3d (CImgDisplay &disp, const CImg< tp > &vertices, const bool centering=true, const int render_static=4, const int render_motion=1, const bool is_double_sided=true, const float focale=700, const float light_x=0, const float light_y=0, const float light_z=-5e8f, const float specular_lightness=0.2f, const float specular_shininess=0.1f, const bool display_axes=true, float *const pose_matrix=0, const bool exit_on_anykey=false) const
	Display object 3D in an interactive window [simplification].
template<typename tp >
const CImg< T > &	display_object3d (const char *const title, const CImg< tp > &vertices, const bool centering=true, const int render_static=4, const int render_motion=1, const bool is_double_sided=true, const float focale=700, const float light_x=0, const float light_y=0, const float light_z=-5e8f, const float specular_lightness=0.2f, const float specular_shininess=0.1f, const bool display_axes=true, float *const pose_matrix=0, const bool exit_on_anykey=false) const
	Display object 3D in an interactive window [simplification].
const CImg< T > &	display_graph (CImgDisplay &disp, const unsigned int plot_type=1, const unsigned int vertex_type=1, const char *const labelx=0, const double xmin=0, const double xmax=0, const char *const labely=0, const double ymin=0, const double ymax=0, const bool exit_on_anykey=false) const
	Display 1D graph in an interactive window. More...
const CImg< T > &	display_graph (const char *const title=0, const unsigned int plot_type=1, const unsigned int vertex_type=1, const char *const labelx=0, const double xmin=0, const double xmax=0, const char *const labely=0, const double ymin=0, const double ymax=0, const bool exit_on_anykey=false) const
	Display 1D graph in an interactive window [overloading].
const CImg< T > &	save (const char *const filename, const int number=-1, const unsigned int digits=6) const
	Save image as a file. More...
const CImg< T > &	save_ascii (const char *const filename) const
	Save image as an ascii file. More...
const CImg< T > &	save_ascii (std::FILE *const file) const
	Save image as an Ascii file [overloading].
const CImg< T > &	save_cpp (const char *const filename) const
	Save image as a .cpp source file. More...
const CImg< T > &	save_cpp (std::FILE *const file) const
	Save image as a .cpp source file [overloading].
const CImg< T > &	save_dlm (const char *const filename) const
	Save image as a DLM file. More...
const CImg< T > &	save_dlm (std::FILE *const file) const
	Save image as a DLM file [overloading].
const CImg< T > &	save_bmp (const char *const filename) const
	Save image as a BMP file. More...
const CImg< T > &	save_bmp (std::FILE *const file) const
	Save image as a BMP file [overloading].
const CImg< T > &	save_jpeg (const char *const filename, const unsigned int quality=100) const
	Save image as a JPEG file. More...
const CImg< T > &	save_jpeg (std::FILE *const file, const unsigned int quality=100) const
	Save image as a JPEG file [overloading].
const CImg< T > &	save_magick (const char *const filename, const unsigned int bytes_per_pixel=0) const
	Save image, using built-in ImageMagick++ library. More...
const CImg< T > &	save_png (const char *const filename, const unsigned int bytes_per_pixel=0) const
	Save image as a PNG file. More...
const CImg< T > &	save_png (std::FILE *const file, const unsigned int bytes_per_pixel=0) const
	Save image as a PNG file [overloading].
const CImg< T > &	save_pnm (const char *const filename, const unsigned int bytes_per_pixel=0) const
	Save image as a PNM file. More...
const CImg< T > &	save_pnm (std::FILE *const file, const unsigned int bytes_per_pixel=0) const
	Save image as a PNM file [overloading].
const CImg< T > &	save_pnk (const char *const filename) const
	Save image as a PNK file. More...
const CImg< T > &	save_pnk (std::FILE *const file) const
	Save image as a PNK file [overloading].
const CImg< T > &	save_pfm (const char *const filename) const
	Save image as a PFM file. More...
const CImg< T > &	save_pfm (std::FILE *const file) const
	Save image as a PFM file [overloading].
const CImg< T > &	save_rgb (const char *const filename) const
	Save image as a RGB file. More...
const CImg< T > &	save_rgb (std::FILE *const file) const
	Save image as a RGB file [overloading].
const CImg< T > &	save_rgba (const char *const filename) const
	Save image as a RGBA file. More...
const CImg< T > &	save_rgba (std::FILE *const file) const
	Save image as a RGBA file [overloading].
const CImg< T > &	save_tiff (const char *const filename, const unsigned int compression_type=0, const float *const voxel_size=0, const char *const description=0, const bool use_bigtiff=true) const
	Save image as a TIFF file. More...
const CImg< T > &	save_minc2 (const char *const filename, const char *const imitate_file=0) const
	Save image as a MINC2 file. More...
const CImg< T > &	save_analyze (const char *const filename, const float *const voxel_size=0) const
	Save image as an ANALYZE7.5 or NIFTI file. More...
const CImg< T > &	save_cimg (const char *const filename, const bool is_compressed=false) const
	Save image as a .cimg file. More...
const CImg< T > &	save_cimg (std::FILE *const file, const bool is_compressed=false) const
	Save image as a .cimg file [overloading].
const CImg< T > &	save_cimg (const char *const filename, const unsigned int n0, const unsigned int x0, const unsigned int y0, const unsigned int z0, const unsigned int c0) const
	Save image as a sub-image into an existing .cimg file. More...
const CImg< T > &	save_cimg (std::FILE *const file, const unsigned int n0, const unsigned int x0, const unsigned int y0, const unsigned int z0, const unsigned int c0) const
	Save image as a sub-image into an existing .cimg file [overloading].
const CImg< T > &	save_inr (const char *const filename, const float *const voxel_size=0) const
	Save image as an INRIMAGE-4 file. More...
const CImg< T > &	save_inr (std::FILE *const file, const float *const voxel_size=0) const
	Save image as an INRIMAGE-4 file [overloading].
const CImg< T > &	save_exr (const char *const filename) const
	Save image as an OpenEXR file. More...
const CImg< T > &	save_pandore (const char *const filename, const unsigned int colorspace=0) const
	Save image as a Pandore-5 file. More...
const CImg< T > &	save_pandore (std::FILE *const file, const unsigned int colorspace=0) const
	Save image as a Pandore-5 file [overloading]. More...
const CImg< T > &	save_raw (const char *const filename, const bool is_multiplexed=false) const
	Save image as a raw data file. More...
const CImg< T > &	save_raw (std::FILE *const file, const bool is_multiplexed=false) const
	Save image as a raw data file [overloading]. More...
const CImg< T > &	save_yuv (const char *const filename, const unsigned int chroma_subsampling=444, const bool is_rgb=true) const
	Save image as a .yuv video file. More...
const CImg< T > &	save_yuv (std::FILE *const file, const unsigned int chroma_subsampling=444, const bool is_rgb=true) const
	Save image as a .yuv video file [overloading]. More...
template<typename tf , typename tc >
const CImg< T > &	save_off (const CImgList< tf > &primitives, const CImgList< tc > &colors, const char *const filename) const
	Save 3D object as an Object File Format (.off) file. More...
template<typename tf , typename tc >
const CImg< T > &	save_off (const CImgList< tf > &primitives, const CImgList< tc > &colors, std::FILE *const file) const
	Save 3D object as an Object File Format (.off) file [overloading]. More...
const CImg< T > &	save_video (const char *const filename, const unsigned int fps=25, const char *codec=0, const bool keep_open=false) const
	Save volumetric image as a video (using the OpenCV library when available). More...
const CImg< T > &	save_ffmpeg_external (const char *const filename, const unsigned int fps=25, const char *const codec=0, const unsigned int bitrate=2048) const
	Save volumetric image as a video, using ffmpeg external binary. More...
const CImg< T > &	save_gzip_external (const char *const filename) const
	Save image using gzip external binary. More...
const CImg< T > &	save_graphicsmagick_external (const char *const filename, const unsigned int quality=100) const
	Save image using GraphicsMagick's external binary. More...
const CImg< T > &	save_imagemagick_external (const char *const filename, const unsigned int quality=100) const
	Save image using ImageMagick's external binary. More...
const CImg< T > &	save_medcon_external (const char *const filename) const
	Save image as a Dicom file. More...
const CImg< T > &	save_other (const char *const filename, const unsigned int quality=100) const
CImg< ucharT >	get_serialize (const bool is_compressed=false, const unsigned int header_size=0) const
	Serialize a CImg<T> instance into a raw CImg<unsigned char> buffer. More...

Detailed Description

template<typename T>
struct cimg_library::CImg< T >

Class representing an image (up to 4 dimensions wide), each pixel being of type T.

This is the main class of the CImg Library. It declares and constructs an image, allows access to its pixel values, and is able to perform various image operations.

Image representation

A CImg image is defined as an instance of the container CImg<T>, which contains a regular grid of pixels, each pixel value being of type T. The image grid can have up to 4 dimensions: width, height, depth and number of channels. Usually, the three first dimensions are used to describe spatial coordinates (x,y,z), while the number of channels is rather used as a vector-valued dimension (it may describe the R,G,B color channels for instance). If you need a fifth dimension, you can use image lists CImgList<T> rather than simple images CImg<T>.

Thus, the CImg<T> class is able to represent volumetric images of vector-valued pixels, as well as images with less dimensions (1D scalar signal, 2D color images, ...). Most member functions of the class CImg<T> are designed to handle this maximum case of (3+1) dimensions.

Concerning the pixel value type T: fully supported template types are the basic C++ types: unsigned char, char, short, unsigned int, int, unsigned long, long, float, double, ... . Typically, fast image display can be done using CImg<unsigned char> images, while complex image processing algorithms may be rather coded using CImg<float> or CImg<double> images that have floating-point pixel values. The default value for the template T is float. Using your own template types may be possible. However, you will certainly have to define the complete set of arithmetic and logical operators for your class.

Image structure

The CImg<T> structure contains six fields:

• _width defines the number of columns of the image (size along the X-axis).
• _height defines the number of rows of the image (size along the Y-axis).
• _depth defines the number of slices of the image (size along the Z-axis).
• _spectrum defines the number of channels of the image (size along the C-axis).
• _data defines a pointer to the pixel data (of type T).
• _is_shared is a boolean that tells if the memory buffer data is shared with another image.

You can access these fields publicly although it is recommended to use the dedicated functions width(), height(), depth(), spectrum() and ptr() to do so. Image dimensions are not limited to a specific range (as long as you got enough available memory). A value of 1 usually means that the corresponding dimension is flat. If one of the dimensions is 0, or if the data pointer is null, the image is considered as empty. Empty images should not contain any pixel data and thus, will not be processed by CImg member functions (a CImgInstanceException will be thrown instead). Pixel data are stored in memory, in a non interlaced mode (See How pixel data are stored with CImg.).

Image declaration and construction

Declaring an image can be done by using one of the several available constructors. Here is a list of the most used:

• Construct images from arbitrary dimensions:
  • CImg<char> img; declares an empty image.
  • CImg<unsigned char> img(128,128); declares a 128x128 greyscale image with unsigned char pixel values.
  • CImg<double> img(3,3); declares a 3x3 matrix with double coefficients.
  • CImg<unsigned char> img(256,256,1,3); declares a 256x256x1x3 (color) image (colors are stored as an image with three channels).
  • CImg<double> img(128,128,128); declares a 128x128x128 volumetric and greyscale image (with double pixel values).
  • CImg<> img(128,128,128,3); declares a 128x128x128 volumetric color image (with float pixels, which is the default value of the template parameter T).
  • Note: images pixels are not automatically initialized to 0. You may use the function fill() to do it, or use the specific constructor taking 5 parameters like this: CImg<> img(128,128,128,3,0); declares a 128x128x128 volumetric color image with all pixel values to 0.
• Construct images from filenames:
  • CImg<unsigned char> img("image.jpg"); reads a JPEG color image from the file "image.jpg".
  • CImg<float> img("analyze.hdr"); reads a volumetric image (ANALYZE7.5 format) from the file "analyze.hdr".
  • Note: You need to install ImageMagick to be able to read common compressed image formats (JPG,PNG, ...) (See Files IO in CImg.).

• Construct images from C-style arrays:

  • CImg<int> img(data_buffer,256,256); constructs a 256x256 greyscale image from a int* buffer data_buffer (of size 256x256=65536).
  • CImg<unsigned char> img(data_buffer,256,256,1,3); constructs a 256x256 color image from a unsigned char* buffer data_buffer (where R,G,B channels follow each others).

  The complete list of constructors can be found here.

Most useful functions

The CImg<T> class contains a lot of functions that operates on images. Some of the most useful are:

• operator()(): Read or write pixel values.
• display(): displays the image in a new window.

Member Typedef Documentation

iterator

typedef T* iterator

Simple iterator type, to loop through each pixel value of an image instance.

Note

• The CImg<T>::iterator type is defined to be a T*.
• You will seldom have to use iterators in CImg, most classical operations being achieved (often in a faster way) using methods of CImg<T>.

Example

CImg<float> img("reference.jpg");                                         // Load image from file
// Set all pixels to '0', with a CImg iterator.
for (CImg<float>::iterator it = img.begin(), it<img.end(); ++it) *it = 0;
img.fill(0);                                                              // Do the same with a built-in method

value_type

typedef T value_type

Pixel value type.

Refer to the type of the pixel values of an image instance.

Note

• The CImg<T>::value_type type of a CImg<T> is defined to be a T.
• CImg<T>::value_type is actually not used in CImg methods. It has been mainly defined for compatibility with STL naming conventions.

Constructor & Destructor Documentation

~CImg()

~CImg

(

)

Destroy image.

Note

• The pixel buffer data() is deallocated if necessary, e.g. for non-empty and non-shared image instances.
• Destroying an empty or shared image does nothing actually.

Warning

• When destroying a non-shared image, make sure that you will not operate on a remaining shared image that shares its buffer with the destroyed instance, in order to avoid further invalid memory access (to a deallocated buffer).

CImg() [1/13]

CImg

(

)

Construct empty image.

Note

• An empty image has no pixel data and all of its dimensions width(), height(), depth(), spectrum() are set to 0, as well as its pixel buffer pointer data().
• An empty image may be re-assigned afterwards, e.g. with the family of assign(unsigned int,unsigned int,unsigned int,unsigned int) methods, or by operator=(const CImg<t>&). In all cases, the type of pixels stays T.
• An empty image is never shared.

Example

CImg<float> img1, img2;      // Construct two empty images
img1.assign(256,256,1,3);    // Re-assign 'img1' to be a 256x256x1x3 (color) image
img2 = img1.get_rand(0,255); // Re-assign 'img2' to be a random-valued version of 'img1'
img2.assign();               // Re-assign 'img2' to be an empty image again

CImg() [2/13]

CImg ( const unsigned int  size_x, const unsigned int  size_y = 1, const unsigned int  size_z = 1, const unsigned int  size_c = 1  )

explicit

Construct image with specified size.

Parameters

size_x	Image width().
size_y	Image height().
size_z	Image depth().
size_c	Image spectrum() (number of channels).

Note

• It is able to create only non-shared images, and allocates thus a pixel buffer data() for each constructed image instance.
• Setting one dimension size_x,size_y,size_z or size_c to 0 leads to the construction of an empty image.
• A CImgInstanceException is thrown when the pixel buffer cannot be allocated (e.g. when requested size is too big for available memory).

Warning

• The allocated pixel buffer is not filled with a default value, and is likely to contain garbage values. In order to initialize pixel values during construction (e.g. with 0), use constructor CImg(unsigned int,unsigned int,unsigned int,unsigned int,T) instead.

Example

CImg<float> img1(256,256,1,3);   // Construct a 256x256x1x3 (color) image, filled with garbage values
CImg<float> img2(256,256,1,3,0); // Construct a 256x256x1x3 (color) image, filled with value '0'

CImg() [3/13]

CImg	(	const unsigned int	size_x,
		const unsigned int	size_y,
		const unsigned int	size_z,
		const unsigned int	size_c,
		const T &	value
	)

Construct image with specified size and initialize pixel values.

Parameters

size_x	Image width().
size_y	Image height().
size_z	Image depth().
size_c	Image spectrum() (number of channels).
value	Initialization value.

Note

• Similar to CImg(unsigned int,unsigned int,unsigned int,unsigned int), but it also fills the pixel buffer with the specified value.

Warning

• It cannot be used to construct a vector-valued image and initialize it with vector-valued pixels (e.g. RGB vector, for color images). For this task, you may use fillC() after construction.

CImg() [4/13]

CImg	(	const unsigned int	size_x,
		const unsigned int	size_y,
		const unsigned int	size_z,
		const unsigned int	size_c,
		const int	value0,
		const int	value1,
			...
	)

Construct image with specified size and initialize pixel values from a sequence of integers.

Construct a new image instance of size size_x x size_y x size_z x size_c, with pixels of type T, and initialize pixel values from the specified sequence of integers value0,value1,...

Parameters

size_x	Image width().
size_y	Image height().
size_z	Image depth().
size_c	Image spectrum() (number of channels).
value0	First value of the initialization sequence (must be an integer).
value1	Second value of the initialization sequence (must be an integer).
...

Note

• Similar to CImg(unsigned int,unsigned int,unsigned int,unsigned int), but it also fills the pixel buffer with a sequence of specified integer values.

Warning

• You must specify exactly size_x*size_y*size_z*size_c integers in the initialization sequence. Otherwise, the constructor may crash or fill your image pixels with garbage.

Example

const CImg<float> img(2,2,1,3,      // Construct a 2x2 color (RGB) image
                      0,255,0,255,  // Set the 4 values for the red component
                      0,0,255,255,  // Set the 4 values for the green component
                      64,64,64,64); // Set the 4 values for the blue component
img.resize(150,150).display();

CImg() [5/13]

CImg	(	const unsigned int	size_x,
		const unsigned int	size_y,
		const unsigned int	size_z,
		const unsigned int	size_c,
		const double	value0,
		const double	value1,
			...
	)

Construct image with specified size and initialize pixel values from a sequence of doubles.

Construct a new image instance of size size_x x size_y x size_z x size_c, with pixels of type T, and initialize pixel values from the specified sequence of doubles value0,value1,...

Parameters

size_x	Image width().
size_y	Image height().
size_z	Image depth().
size_c	Image spectrum() (number of channels).
value0	First value of the initialization sequence (must be a double).
value1	Second value of the initialization sequence (must be a double).
...

Note

• Similar to CImg(unsigned int,unsigned int,unsigned int,unsigned int,int,int,...), but takes a sequence of double values instead of integers.

Warning

• You must specify exactly dx*dy*dz*dc doubles in the initialization sequence. Otherwise, the constructor may crash or fill your image with garbage. For instance, the code below will probably crash on most platforms:

  const CImg<float> img(2,2,1,1, 0.5,0.5,255,255); // FAIL: The two last arguments are 'int', not 'double'!

CImg() [6/13]

CImg	(	const unsigned int	size_x,
		const unsigned int	size_y,
		const unsigned int	size_z,
		const unsigned int	size_c,
		const char *const	values,
		const bool	repeat_values
	)

Construct image with specified size and initialize pixel values from a value string.

Construct a new image instance of size size_x x size_y x size_z x size_c, with pixels of type T, and initializes pixel values from the specified string values.

Parameters

size_x	Image width().
size_y	Image height().
size_z	Image depth().
size_c	Image spectrum() (number of channels).
values	Value string describing the way pixel values are set.
repeat_values	Tells if the value filling process is repeated over the image.

Note

• Similar to CImg(unsigned int,unsigned int,unsigned int,unsigned int), but it also fills the pixel buffer with values described in the value string values.
• Value string values may describe two different filling processes:
  • Either values is a sequences of values assigned to the image pixels, as in "1,2,3,7,8,2". In this case, set repeat_values to true to periodically fill the image with the value sequence.
  • Either, values is a formula, as in "cos(x/10)*sin(y/20)". In this case, parameter repeat_values is pointless.
• For both cases, specifying repeat_values is mandatory. It disambiguates the possible overloading of constructor CImg(unsigned int,unsigned int,unsigned int,unsigned int,T) with T being a const char*.
• A CImgArgumentException is thrown when an invalid value string values is specified.

Example

const CImg<float> img1(129,129,1,3,"0,64,128,192,255",true), // Construct image from a value sequence
                  img2(129,129,1,3,"if(c==0,255*abs(cos(x/10)),1.8*y)",false); // Construct image from a formula
(img1,img2).display();

CImg() [7/13]

CImg	(	const t *const	values,
		const unsigned int	size_x,
		const unsigned int	size_y = 1,
		const unsigned int	size_z = 1,
		const unsigned int	size_c = 1,
		const bool	is_shared = false
	)

Construct image with specified size and initialize pixel values from a memory buffer.

Construct a new image instance of size size_x x size_y x size_z x size_c, with pixels of type T, and initializes pixel values from the specified t* memory buffer.

Parameters

values	Pointer to the input memory buffer.
size_x	Image width().
size_y	Image height().
size_z	Image depth().
size_c	Image spectrum() (number of channels).
is_shared	Tells if input memory buffer must be shared by the current instance.

Note

• If is_shared is false, the image instance allocates its own pixel buffer, and values from the specified input buffer are copied to the instance buffer. If buffer types T and t are different, a regular static cast is performed during buffer copy.
• Otherwise, the image instance does not allocate a new buffer, and uses the input memory buffer as its own pixel buffer. This case requires that types T and t are the same. Later, destroying such a shared image will not deallocate the pixel buffer, this task being obviously charged to the initial buffer allocator.
• A CImgInstanceException is thrown when the pixel buffer cannot be allocated (e.g. when requested size is too big for available memory).

Warning

• You must take care when operating on a shared image, since it may have an invalid pixel buffer pointer data() (e.g. already deallocated).

Example

unsigned char tab[256*256] = {};
CImg<unsigned char> img1(tab,256,256,1,1,false), // Construct new non-shared image from buffer 'tab'
                    img2(tab,256,256,1,1,true);  // Construct new shared-image from buffer 'tab'
tab[1024] = 255;                                 // Here, 'img2' is indirectly modified, but not 'img1'

CImg() [8/13]

CImg ( const char *const  filename )

explicit

Construct image from reading an image file.

Construct a new image instance with pixels of type T, and initialize pixel values with the data read from an image file.

Parameters

filename

Filename, as a C-string.

Note

• Similar to CImg(unsigned int,unsigned int,unsigned int,unsigned int), but it reads the image dimensions and pixel values from the specified image file.
• The recognition of the image file format by CImg higlhy depends on the tools installed on your system and on the external libraries you used to link your code against.
• Considered pixel type T should better fit the file format specification, or data loss may occur during file load (e.g. constructing a CImg<unsigned char> from a float-valued image file).
• A CImgIOException is thrown when the specified filename cannot be read, or if the file format is not recognized.

Example

const CImg<float> img("reference.jpg");
img.display();

CImg() [9/13]

CImg

(

const CImg< t > &

img

)

Construct image copy.

Construct a new image instance with pixels of type T, as a copy of an existing CImg<t> instance.

Parameters

img	Input image to copy.

Note

• Constructed copy has the same size width() x height() x depth() x spectrum() and pixel values as the input image img.
• If input image img is shared and if types T and t are the same, the constructed copy is also shared, and shares its pixel buffer with img. Modifying a pixel value in the constructed copy will thus also modifies it in the input image img. This behavior is needful to allow functions to return shared images.
• Otherwise, the constructed copy allocates its own pixel buffer, and copies pixel values from the input image img into its buffer. The copied pixel values may be eventually statically casted if types T and t are different.
• Constructing a copy from an image img when types t and T are the same is significantly faster than with different types.
• A CImgInstanceException is thrown when the pixel buffer cannot be allocated (e.g. not enough available memory).

CImg() [10/13]

CImg	(	const CImg< t > &	img,
		const bool	is_shared
	)

Advanced copy constructor.

Construct a new image instance with pixels of type T, as a copy of an existing CImg<t> instance, while forcing the shared state of the constructed copy.

Parameters

img	Input image to copy.
is_shared	Tells about the shared state of the constructed copy.

Note

• Similar to CImg(const CImg<t>&), except that it allows to decide the shared state of the constructed image, which does not depend anymore on the shared state of the input image img:
  • If is_shared is true, the constructed copy will share its pixel buffer with the input image img. For that case, the pixel types T and t must be the same.
  • If is_shared is false, the constructed copy will allocate its own pixel buffer, whether the input image img is shared or not.
• A CImgArgumentException is thrown when a shared copy is requested with different pixel types T and t.

CImg() [11/13]

CImg	(	const CImg< t > &	img,
		const char *const	dimensions
	)

Construct image with dimensions borrowed from another image.

Construct a new image instance with pixels of type T, and size get from some dimensions of an existing CImg<t> instance.

Parameters

img	Input image from which dimensions are borrowed.
dimensions	C-string describing the image size along the X,Y,Z and C-dimensions.

Note

• Similar to CImg(unsigned int,unsigned int,unsigned int,unsigned int), but it takes the image dimensions (not its pixel values) from an existing CImg<t> instance.
• The allocated pixel buffer is not filled with a default value, and is likely to contain garbage values. In order to initialize pixel values (e.g. with 0), use constructor CImg(const CImg<t>&,const char*,T) instead.

Example

const CImg<float> img1(256,128,1,3),      // 'img1' is a 256x128x1x3 image
                  img2(img1,"xyzc"),      // 'img2' is a 256x128x1x3 image
                  img3(img1,"y,x,z,c"),   // 'img3' is a 128x256x1x3 image
                  img4(img1,"c,x,y,3",0), // 'img4' is a 3x128x256x3 image (with pixels initialized to '0')

CImg() [12/13]

CImg	(	const CImg< t > &	img,
		const char *const	dimensions,
		const T &	value
	)

Construct image with dimensions borrowed from another image and initialize pixel values.

Construct a new image instance with pixels of type T, and size get from the dimensions of an existing CImg<t> instance, and set all pixel values to specified value.

Parameters

img	Input image from which dimensions are borrowed.
dimensions	String describing the image size along the X,Y,Z and V-dimensions.
value	Value used for initialization.

Note

• Similar to CImg(const CImg<t>&,const char*), but it also fills the pixel buffer with the specified value.

CImg() [13/13]

CImg ( const CImgDisplay &  disp )

explicit

Construct image from a display window.

Construct a new image instance with pixels of type T, as a snapshot of an existing CImgDisplay instance.

Parameters

disp	Input display window.

Note

• The width() and height() of the constructed image instance are the same as the specified CImgDisplay.
• The depth() and spectrum() of the constructed image instance are respectively set to 1 and 3 (i.e. a 2D color image).
• The image pixels are read as 8-bits RGB values.

Member Function Documentation

assign() [1/13]

CImg<T>& assign

(

)

Construct empty image [in-place version].

In-place version of the default constructor CImg(). It simply resets the instance to an empty image.

assign() [2/13]

CImg<T>& assign	(	const unsigned int	size_x,
		const unsigned int	size_y = 1,
		const unsigned int	size_z = 1,
		const unsigned int	size_c = 1
	)

Construct image with specified size [in-place version].

In-place version of the constructor CImg(unsigned int,unsigned int,unsigned int,unsigned int).

assign() [3/13]

CImg<T>& assign	(	const unsigned int	size_x,
		const unsigned int	size_y,
		const unsigned int	size_z,
		const unsigned int	size_c,
		const T &	value
	)

Construct image with specified size and initialize pixel values [in-place version].

In-place version of the constructor CImg(unsigned int,unsigned int,unsigned int,unsigned int,T).

assign() [4/13]

CImg<T>& assign	(	const unsigned int	size_x,
		const unsigned int	size_y,
		const unsigned int	size_z,
		const unsigned int	size_c,
		const int	value0,
		const int	value1,
			...
	)

Construct image with specified size and initialize pixel values from a sequence of integers [in-place version].

In-place version of the constructor CImg(unsigned int,unsigned int,unsigned int,unsigned int,int,int,...).

assign() [5/13]

CImg<T>& assign	(	const unsigned int	size_x,
		const unsigned int	size_y,
		const unsigned int	size_z,
		const unsigned int	size_c,
		const double	value0,
		const double	value1,
			...
	)

Construct image with specified size and initialize pixel values from a sequence of doubles [in-place version].

In-place version of the constructor CImg(unsigned int,unsigned int,unsigned int,unsigned int,double,double,...).

assign() [6/13]

CImg<T>& assign	(	const unsigned int	size_x,
		const unsigned int	size_y,
		const unsigned int	size_z,
		const unsigned int	size_c,
		const char *const	values,
		const bool	repeat_values
	)

Construct image with specified size and initialize pixel values from a value string [in-place version].

In-place version of the constructor CImg(unsigned int,unsigned int,unsigned int,unsigned int,const char*,bool).

assign() [7/13]

CImg<T>& assign	(	const t *const	values,
		const unsigned int	size_x,
		const unsigned int	size_y = 1,
		const unsigned int	size_z = 1,
		const unsigned int	size_c = 1
	)

Construct image with specified size and initialize pixel values from a memory buffer [in-place version].

In-place version of the constructor CImg(const t*,unsigned int,unsigned int,unsigned int,unsigned int).

assign() [8/13]

CImg<T>& assign

(

const char *const

filename

)

Construct image from reading an image file [in-place version].

In-place version of the constructor CImg(const char*).

assign() [9/13]

CImg<T>& assign

(

const CImg< t > &

img

)

Construct image copy [in-place version].

In-place version of the constructor CImg(const CImg<t>&).

assign() [10/13]

CImg<T>& assign	(	const CImg< t > &	img,
		const bool	is_shared
	)

In-place version of the advanced copy constructor.

In-place version of the constructor CImg(const CImg<t>&,bool).

assign() [11/13]

CImg<T>& assign	(	const CImg< t > &	img,
		const char *const	dimensions
	)

Construct image with dimensions borrowed from another image [in-place version].

In-place version of the constructor CImg(const CImg<t>&,const char*).

assign() [12/13]

CImg<T>& assign	(	const CImg< t > &	img,
		const char *const	dimensions,
		const T &	value
	)

Construct image with dimensions borrowed from another image and initialize pixel values [in-place version].

In-place version of the constructor CImg(const CImg<t>&,const char*,T).

assign() [13/13]

CImg<T>& assign

(

const CImgDisplay &

disp

)

Construct image from a display window [in-place version].

In-place version of the constructor CImg(const CImgDisplay&).

clear()

CImg<T>& clear

(

)

Construct empty image [in-place version].

Equivalent to assign().

Note

• It has been defined for compatibility with STL naming conventions.

move_to() [1/2]

CImg<t>& move_to

(

CImg< t > &

img

)

Transfer content of an image instance into another one.

Transfer the dimensions and the pixel buffer content of an image instance into another one, and replace instance by an empty image. It avoids the copy of the pixel buffer when possible.

Parameters

img	Destination image.

Note

• Pixel types T and t of source and destination images can be different, though the process is designed to be instantaneous when T and t are the same.

Example

CImg<float> src(256,256,1,3,0), // Construct a 256x256x1x3 (color) image filled with value '0'
            dest(16,16);        // Construct a 16x16x1x1 (scalar) image
src.move_to(dest);              // Now, 'src' is empty and 'dest' is the 256x256x1x3 image

move_to() [2/2]

CImgList<t>& move_to	(	CImgList< t > &	list,
		const unsigned int	pos = ~0U
	)

Transfer content of an image instance into a new image in an image list.

Transfer the dimensions and the pixel buffer content of an image instance into a newly inserted image at position pos in specified CImgList<t> instance.

Parameters

list	Destination list.
pos	Position of the newly inserted image in the list.

Note

• When optional parameter pos is omitted, the image instance is transferred as a new image at the end of the specified list.
• It is convenient to sequentially insert new images into image lists, with no additional copies of memory buffer.

Example

CImgList<float> list;             // Construct an empty image list
CImg<float> img("reference.jpg"); // Read image from filename
img.move_to(list);                // Transfer image content as a new item in the list (no buffer copy)

swap()

CImg<T>& swap

(

CImg< T > &

img

)

Swap fields of two image instances.

Parameters

img	Image to swap fields with.

Note

• It can be used to interchange the content of two images in a very fast way. Can be convenient when dealing with algorithms requiring two swapping buffers.

Example

CImg<float> img1("lena.jpg"),
            img2("milla.jpg");
img1.swap(img2);    // Now, 'img1' is 'milla' and 'img2' is 'lena'

empty()

static CImg<T>& empty ( )

static

Return a reference to an empty image.

Note

This function is useful mainly to declare optional parameters having type CImg<T> in functions prototypes, e.g.

void f(const int x=0, const int y=0, const CImg<float>& img=CImg<float>::empty());

operator()() [1/2]

T& operator()	(	const unsigned int	x,
		const unsigned int	y = 0,
		const unsigned int	z = 0,
		const unsigned int	c = 0
	)

Access to a pixel value.

Return a reference to a located pixel value of the image instance, being possibly const, whether the image instance is const or not. This is the standard method to get/set pixel values in CImg<T> images.

Parameters

x	X-coordinate of the pixel value.
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.
c	C-coordinate of the pixel value.

Note

• Range of pixel coordinates start from (0,0,0,0) to (width() - 1,height() - 1,depth() - 1,spectrum() - 1).
• Due to the particular arrangement of the pixel buffers defined in CImg, you can omit one coordinate if the corresponding dimension is equal to 1. For instance, pixels of a 2D image (depth() equal to 1) can be accessed by img(x,y,c) instead of img(x,y,0,c).

Warning

• There is no boundary checking done in this operator, to make it as fast as possible. You must take care of out-of-bounds access by yourself, if necessary. For debugging purposes, you may want to define macro 'cimg_verbosity'>=3 to enable additional boundary checking operations in this operator. In that case, warning messages will be printed on the error output when accessing out-of-bounds pixels.

Example

CImg<float> img(100,100,1,3,0); // Construct a 100x100x1x3 (color) image with pixels set to '0'
const float
   valR = img(10,10,0,0), // Read red value at coordinates (10,10)
   valG = img(10,10,0,1), // Read green value at coordinates (10,10)
   valB = img(10,10,2),   // Read blue value at coordinates (10,10) (Z-coordinate can be omitted)
   avg = (valR + valG + valB)/3; // Compute average pixel value
img(10,10,0) = img(10,10,1) = img(10,10,2) = avg; // Replace the color pixel (10,10) by the average grey value

operator()() [2/2]

T& operator()	(	const unsigned int	x,
		const unsigned int	y,
		const unsigned int	z,
		const unsigned int	c,
		const ulongT	wh,
		const ulongT	whd = 0
	)

Access to a pixel value.

Parameters

x	X-coordinate of the pixel value.
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.
c	C-coordinate of the pixel value.
wh	Precomputed offset, must be equal to width()*height().
whd	Precomputed offset, must be equal to width()*height()*depth().

Note

• Similar to (but faster than) operator()(). It uses precomputed offsets to optimize memory access. You may use it to optimize the reading/writing of several pixel values in the same image (e.g. in a loop).

operator T*()

operator T*

(

)

Implicitly cast an image into a T*.

Implicitly cast a CImg<T> instance into a T* or const T* pointer, whether the image instance is const or not. The returned pointer points on the first value of the image pixel buffer.

Note

• It simply returns the pointer data() to the pixel buffer.
• This implicit conversion is convenient to test the empty state of images (data() being 0 in this case), e.g.

  CImg<float> img1(100,100), img2; // 'img1' is a 100x100 image, 'img2' is an empty image
  if (img1) {                      // Test succeeds, 'img1' is not an empty image
    if (!img2) {                   // Test succeeds, 'img2' is an empty image
      std::printf("'img1' is not empty, 'img2' is empty.");
    }
  }

• It also allows to use brackets to access pixel values, without need for a CImg<T>::operator[](), e.g.

  CImg<float> img(100,100);
  const float value = img[99]; // Access to value of the last pixel on the first row
  img[510] = 255;              // Set pixel value at (10,5)

operator=() [1/4]

CImg<T>& operator=

(

const T &

value

)

Assign a value to all image pixels.

Assign specified value to each pixel value of the image instance.

Parameters

value

Value that will be assigned to image pixels.

Note

• The image size is never modified.
• The value may be casted to pixel type T if necessary.

Example

CImg<char> img(100,100); // Declare image (with garbage values)
img = 0;                 // Set all pixel values to '0'
img = 1.2;               // Set all pixel values to '1' (cast of '1.2' as a 'char')

operator=() [2/4]

CImg<T>& operator=

(

const char *const

expression

)

Assign pixels values from a specified expression.

Initialize all pixel values from the specified string expression.

Parameters

expression

Value string describing the way pixel values are set.

Note

• String parameter expression may describe different things:
  • If expression is a list of values (as in "1,2,3,8,3,2"), or a formula (as in "(x*y)%255"), the pixel values are set from specified expression and the image size is not modified.
  • If expression is a filename (as in "reference.jpg"), the corresponding image file is loaded and replace the image instance. The image size is modified if necessary.

Example

CImg<float> img1(100,100), img2(img1), img3(img1); // Declare 3 scalar images 100x100 with uninitialized values
img1 = "0,50,100,150,200,250,200,150,100,50"; // Set pixel values of 'img1' from a value sequence
img2 = "10*((x*y)%25)";                       // Set pixel values of 'img2' from a formula
img3 = "reference.jpg";                       // Set pixel values of 'img3' from a file (image size is modified)
(img1,img2,img3).display();

operator=() [3/4]

CImg<T>& operator=

(

const CImg< t > &

img

)

Copy an image into the current image instance.

Similar to the in-place copy constructor assign(const CImg<t>&).

operator=() [4/4]

CImg<T>& operator=

(

const CImgDisplay &

disp

)

Copy the content of a display window to the current image instance.

Similar to assign(const CImgDisplay&).

operator+=() [1/3]

CImg<T>& operator+=

(

const t

value

)

In-place addition operator.

Add specified value to all pixels of an image instance.

Parameters

value

Value to add.

Note

• Resulting pixel values are casted to fit the pixel type T. For instance, adding 0.2 to a CImg<char> is possible but does nothing indeed.
• Overflow values are treated as with standard C++ numeric types. For instance,

  CImg<unsigned char> img(100,100,1,1,255); // Construct a 100x100 image with pixel values '255'
  img+=1;                                   // Add '1' to each pixels -> Overflow
  // here all pixels of image 'img' are equal to '0'.

• To prevent value overflow, you may want to consider pixel type T as float or double, and use cut() after addition.

Example

CImg<unsigned char> img1("reference.jpg"); // Load a 8-bits RGB image (values in [0,255])
CImg<float> img2(img1); // Construct a float-valued copy of 'img1'
img2+=100; // Add '100' to pixel values -> goes out of [0,255] but no problems with floats
img2.cut(0,255); // Cut values in [0,255] to fit the 'unsigned char' constraint
img1 = img2; // Rewrite safe result in 'unsigned char' version 'img1'
const CImg<unsigned char> img3 = (img1 + 100).cut(0,255); // Do the same in a more simple and elegant way
(img1,img2,img3).display();

operator+=() [2/3]

CImg<T>& operator+=

(

const char *const

expression

)

In-place addition operator.

Add values to image pixels, according to the specified string expression.

Parameters

expression

Value string describing the way pixel values are added.

Note

• Similar to operator=(const char*), except that it adds values to the pixels of the current image instance, instead of assigning them.

operator+=() [3/3]

CImg<T>& operator+=

(

const CImg< t > &

img

)

In-place addition operator.

Add values to image pixels, according to the values of the input image img.

Parameters

img	Input image to add.

Note

• The size of the image instance is never modified.
• It is not mandatory that input image img has the same size as the image instance. If less values are available in img, then the values are added periodically. For instance, adding one WxH scalar image (spectrum() equal to 1) to one WxH color image (spectrum() equal to 3) means each color channel will be incremented with the same values at the same locations.

Example

CImg<float> img1("reference.jpg"); // Load a RGB color image (img1.spectrum()==3)
// Construct a scalar shading (img2.spectrum()==1).
const CImg<float> img2(img1.width(),img.height(),1,1,"255*(x/w)^2");
img1+=img2; // Add shading to each channel of 'img1'
img1.cut(0,255); // Prevent [0,255] overflow
(img2,img1).display();

operator++() [1/2]

CImg<T>& operator++

(

)

In-place increment operator (prefix).

Add 1 to all image pixels, and return a reference to the current incremented image instance.

Note

• Writing ++img is equivalent to img+=1.

operator++() [2/2]

CImg<T> operator++

(

int

)

In-place increment operator (postfix).

Add 1 to all image pixels, and return a new copy of the initial (pre-incremented) image instance.

Note

• Use the prefixed version operator++() if you don't need a copy of the initial (pre-incremented) image instance, since a useless image copy may be expensive in terms of memory usage.

operator+() [1/4]

CImg<T> operator+

(

)

const

Return a non-shared copy of the image instance.

Note

• Use this operator to ensure you get a non-shared copy of an image instance with same pixel type T. Indeed, the usual copy constructor CImg<T>(const CImg<T>&) returns a shared copy of a shared input image, and it may be not desirable to work on a regular copy (e.g. for a resize operation) if you have no information about the shared state of the input image.
• Writing (+img) is equivalent to CImg<T>(img,false).

operator+() [2/4]

CImg< typename cimg::superset<T,t>::type > operator+

(

const t

value

)

const

Addition operator.

Similar to operator+=(const t), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator+() [3/4]

CImg<Tfloat> operator+

(

const char *const

expression

)

const

Addition operator.

Similar to operator+=(const char*), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator+() [4/4]

CImg< typename cimg::superset<T,t>::type > operator+

(

const CImg< t > &

img

)

const

Addition operator.

Similar to operator+=(const CImg<t>&), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator-=() [1/3]

CImg<T>& operator-=

(

const t

value

)

In-place subtraction operator.

Similar to operator+=(const t), except that it performs a subtraction instead of an addition.

operator-=() [2/3]

CImg<T>& operator-=

(

const char *const

expression

)

In-place subtraction operator.

Similar to operator+=(const char*), except that it performs a subtraction instead of an addition.

operator-=() [3/3]

CImg<T>& operator-=

(

const CImg< t > &

img

)

In-place subtraction operator.

Similar to operator+=(const CImg<t>&), except that it performs a subtraction instead of an addition.

operator--() [1/2]

CImg<T>& operator--

(

)

In-place decrement operator (prefix).

Similar to operator++(), except that it performs a decrement instead of an increment.

operator--() [2/2]

CImg<T> operator--

(

int

)

In-place decrement operator (postfix).

Similar to operator++(int), except that it performs a decrement instead of an increment.

operator-() [1/4]

CImg<T> operator-

(

)

const

Replace each pixel by its opposite value.

Note

• If the computed opposite values are out-of-range, they are treated as with standard C++ numeric types. For instance, the unsigned char opposite of 1 is 255.

Example

const CImg<unsigned char>
  img1("reference.jpg"),   // Load a RGB color image
  img2 = -img1;            // Compute its opposite (in 'unsigned char')
(img1,img2).display();

operator-() [2/4]

CImg< typename cimg::superset<T,t>::type > operator-

(

const t

value

)

const

Subtraction operator.

Similar to operator-=(const t), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator-() [3/4]

CImg<Tfloat> operator-

(

const char *const

expression

)

const

Subtraction operator.

Similar to operator-=(const char*), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator-() [4/4]

CImg< typename cimg::superset<T,t>::type > operator-

(

const CImg< t > &

img

)

const

Subtraction operator.

Similar to operator-=(const CImg<t>&), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator*=() [1/3]

CImg<T>& operator*=

(

const t

value

)

In-place multiplication operator.

Similar to operator+=(const t), except that it performs a multiplication instead of an addition.

operator*=() [2/3]

CImg<T>& operator*=

(

const char *const

expression

)

In-place multiplication operator.

Similar to operator+=(const char*), except that it performs a multiplication instead of an addition.

operator*=() [3/3]

CImg<T>& operator*=

(

const CImg< t > &

img

)

In-place multiplication operator.

Replace the image instance by the matrix multiplication between the image instance and the specified matrix img.

Parameters

img	Second operand of the matrix multiplication.

Note

• It does not compute a pointwise multiplication between two images. For this purpose, use mul(const CImg<t>&) instead.
• The size of the image instance can be modified by this operator.

Example

CImg<float> A(2,2,1,1, 1,2,3,4);   // Construct 2x2 matrix A = [1,2;3,4]
const CImg<float> X(1,2,1,1, 1,2); // Construct 1x2 vector X = [1;2]
A*=X;                              // Assign matrix multiplication A*X to 'A'
// 'A' is now a 1x2 vector whose values are [5;11].

operator*() [1/3]

CImg< typename cimg::superset<T,t>::type > operator*

(

const t

value

)

const

Multiplication operator.

Similar to operator*=(const t), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator*() [2/3]

CImg<Tfloat> operator*

(

const char *const

expression

)

const

Multiplication operator.

Similar to operator*=(const char*), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator*() [3/3]

CImg< typename cimg::superset<T,t>::type > operator*

(

const CImg< t > &

img

)

const

Multiplication operator.

Similar to operator*=(const CImg<t>&), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator/=() [1/3]

CImg<T>& operator/=

(

const t

value

)

In-place division operator.

Similar to operator+=(const t), except that it performs a division instead of an addition.

operator/=() [2/3]

CImg<T>& operator/=

(

const char *const

expression

)

In-place division operator.

Similar to operator+=(const char*), except that it performs a division instead of an addition.

operator/=() [3/3]

CImg<T>& operator/=

(

const CImg< t > &

img

)

In-place division operator.

Replace the image instance by the (right) matrix division between the image instance and the specified matrix img.

Parameters

img	Second operand of the matrix division.

Note

• It does not compute a pointwise division between two images. For this purpose, use div(const CImg<t>&) instead.
• It returns the matrix operation A*inverse(img).
• The size of the image instance can be modified by this operator.

operator/() [1/3]

CImg< typename cimg::superset<T,t>::type > operator/

(

const t

value

)

const

Division operator.

Similar to operator/=(const t), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator/() [2/3]

CImg<Tfloat> operator/

(

const char *const

expression

)

const

Division operator.

Similar to operator/=(const char*), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator/() [3/3]

CImg< typename cimg::superset<T,t>::type > operator/

(

const CImg< t > &

img

)

const

Division operator.

Similar to operator/=(const CImg<t>&), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator%=() [1/3]

CImg<T>& operator%=

(

const t

value

)

In-place modulo operator.

Similar to operator+=(const t), except that it performs a modulo operation instead of an addition.

operator%=() [2/3]

CImg<T>& operator%=

(

const char *const

expression

)

In-place modulo operator.

Similar to operator+=(const char*), except that it performs a modulo operation instead of an addition.

operator%=() [3/3]

CImg<T>& operator%=

(

const CImg< t > &

img

)

In-place modulo operator.

Similar to operator+=(const CImg<t>&), except that it performs a modulo operation instead of an addition.

operator%() [1/3]

CImg< typename cimg::superset<T,t>::type > operator%

(

const t

value

)

const

Modulo operator.

Similar to operator%=(const t), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator%() [2/3]

CImg<Tfloat> operator%

(

const char *const

expression

)

const

Modulo operator.

Similar to operator%=(const char*), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator%() [3/3]

CImg< typename cimg::superset<T,t>::type > operator%

(

const CImg< t > &

img

)

const

Modulo operator.

Similar to operator%=(const CImg<t>&), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image may be a superset of the initial pixel type T, if necessary.

operator&=() [1/3]

CImg<T>& operator&=

(

const t

value

)

In-place bitwise AND operator.

Similar to operator+=(const t), except that it performs a bitwise AND operation instead of an addition.

operator&=() [2/3]

CImg<T>& operator&=

(

const char *const

expression

)

In-place bitwise AND operator.

Similar to operator+=(const char*), except that it performs a bitwise AND operation instead of an addition.

operator&=() [3/3]

CImg<T>& operator&=

(

const CImg< t > &

img

)

In-place bitwise AND operator.

Similar to operator+=(const CImg<t>&), except that it performs a bitwise AND operation instead of an addition.

operator&() [1/3]

CImg<T> operator&

(

const t

value

)

const

Bitwise AND operator.

Similar to operator&=(const t), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator&() [2/3]

CImg<T> operator&

(

const char *const

expression

)

const

Bitwise AND operator.

Similar to operator&=(const char*), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator&() [3/3]

CImg<T> operator&

(

const CImg< t > &

img

)

const

Bitwise AND operator.

Similar to operator&=(const CImg<t>&), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator|=() [1/3]

CImg<T>& operator|=

(

const t

value

)

In-place bitwise OR operator.

Similar to operator+=(const t), except that it performs a bitwise OR operation instead of an addition.

operator|=() [2/3]

CImg<T>& operator|=

(

const char *const

expression

)

In-place bitwise OR operator.

Similar to operator+=(const char*), except that it performs a bitwise OR operation instead of an addition.

operator|=() [3/3]

CImg<T>& operator|=

(

const CImg< t > &

img

)

In-place bitwise OR operator.

Similar to operator+=(const CImg<t>&), except that it performs a bitwise OR operation instead of an addition.

operator|() [1/3]

CImg<T> operator|

(

const t

value

)

const

Bitwise OR operator.

Similar to operator|=(const t), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator|() [2/3]

CImg<T> operator|

(

const char *const

expression

)

const

Bitwise OR operator.

Similar to operator|=(const char*), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator|() [3/3]

CImg<T> operator|

(

const CImg< t > &

img

)

const

Bitwise OR operator.

Similar to operator|=(const CImg<t>&), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator^=() [1/3]

CImg<T>& operator^=

(

const t

value

)

In-place bitwise XOR operator.

Similar to operator+=(const t), except that it performs a bitwise XOR operation instead of an addition.

Warning

• It does not compute the power of pixel values. For this purpose, use pow(const t) instead.

operator^=() [2/3]

CImg<T>& operator^=

(

const char *const

expression

)

In-place bitwise XOR operator.

Similar to operator+=(const char*), except that it performs a bitwise XOR operation instead of an addition.

Warning

• It does not compute the power of pixel values. For this purpose, use pow(const char*) instead.

operator^=() [3/3]

CImg<T>& operator^=

(

const CImg< t > &

img

)

In-place bitwise XOR operator.

Similar to operator+=(const CImg<t>&), except that it performs a bitwise XOR operation instead of an addition.

Warning

• It does not compute the power of pixel values. For this purpose, use pow(const CImg<t>&) instead.

operator^() [1/3]

CImg<T> operator^

(

const t

value

)

const

Bitwise XOR operator.

Similar to operator^=(const t), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator^() [2/3]

CImg<T> operator^

(

const char *const

expression

)

const

Bitwise XOR operator.

Similar to operator^=(const char*), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator^() [3/3]

CImg<T> operator^

(

const CImg< t > &

img

)

const

Bitwise XOR operator.

Similar to operator^=(const CImg<t>&), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator<<=() [1/3]

CImg<T>& operator<<=

(

const t

value

)

In-place bitwise left shift operator.

Similar to operator+=(const t), except that it performs a bitwise left shift instead of an addition.

operator<<=() [2/3]

CImg<T>& operator<<=

(

const char *const

expression

)

In-place bitwise left shift operator.

Similar to operator+=(const char*), except that it performs a bitwise left shift instead of an addition.

operator<<=() [3/3]

CImg<T>& operator<<=

(

const CImg< t > &

img

)

In-place bitwise left shift operator.

Similar to operator+=(const CImg<t>&), except that it performs a bitwise left shift instead of an addition.

operator<<() [1/3]

CImg<T> operator<<

(

const t

value

)

const

Bitwise left shift operator.

Similar to operator<<=(const t), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator<<() [2/3]

CImg<T> operator<<

(

const char *const

expression

)

const

Bitwise left shift operator.

Similar to operator<<=(const char*), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator<<() [3/3]

CImg<T> operator<<

(

const CImg< t > &

img

)

const

Bitwise left shift operator.

Similar to operator<<=(const CImg<t>&), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator>>=() [1/3]

CImg<T>& operator>>=

(

const t

value

)

In-place bitwise right shift operator.

Similar to operator+=(const t), except that it performs a bitwise right shift instead of an addition.

operator>>=() [2/3]

CImg<T>& operator>>=

(

const char *const

expression

)

In-place bitwise right shift operator.

Similar to operator+=(const char*), except that it performs a bitwise right shift instead of an addition.

operator>>=() [3/3]

CImg<T>& operator>>=

(

const CImg< t > &

img

)

In-place bitwise right shift operator.

Similar to operator+=(const CImg<t>&), except that it performs a bitwise right shift instead of an addition.

operator>>() [1/3]

CImg<T> operator>>

(

const t

value

)

const

Bitwise right shift operator.

Similar to operator>>=(const t), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator>>() [2/3]

CImg<T> operator>>

(

const char *const

expression

)

const

Bitwise right shift operator.

Similar to operator>>=(const char*), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator>>() [3/3]

CImg<T> operator>>

(

const CImg< t > &

img

)

const

Bitwise right shift operator.

Similar to operator>>=(const CImg<t>&), except that it returns a new image instance instead of operating in-place. The pixel type of the returned image is T.

operator~()

CImg<T> operator~

(

)

const

Bitwise inversion operator.

Similar to operator-(), except that it compute the bitwise inverse instead of the opposite value.

operator==() [1/3]

bool operator==

(

const t

value

)

const

Test if all pixels of an image have the same value.

Return true is all pixels of the image instance are equal to the specified value.

Parameters

value

Reference value to compare with.

operator==() [2/3]

bool operator==

(

const char *const

expression

)

const

Test if all pixel values of an image follow a specified expression.

Return true is all pixels of the image instance are equal to the specified expression.

Parameters

expression

Value string describing the way pixel values are compared.

operator==() [3/3]

bool operator==

(

const CImg< t > &

img

)

const

Test if two images have the same size and values.

Return true if the image instance and the input image img have the same pixel values, even if the dimensions of the two images do not match. It returns false otherwise.

Parameters

img	Input image to compare with.

Note

• The pixel buffer pointers data() of the two compared images do not have to be the same for operator==() to return true. Only the dimensions and the pixel values matter. Thus, the comparison can be true even for different pixel types T and t.

Example

const CImg<float> img1(1,3,1,1, 0,1,2); // Construct a 1x3 vector [0;1;2] (with 'float' pixel values)
const CImg<char> img2(1,3,1,1, 0,1,2);  // Construct a 1x3 vector [0;1;2] (with 'char' pixel values)
if (img1==img2) {                       // Test succeeds, image dimensions and values are the same
  std::printf("'img1' and 'img2' have same dimensions and values.");
}

operator!=() [1/3]

bool operator!=

(

const t

value

)

const

Test if pixels of an image are all different from a value.

Return true is all pixels of the image instance are different than the specified value.

Parameters

value

Reference value to compare with.

operator!=() [2/3]

bool operator!=

(

const char *const

expression

)

const

Test if all pixel values of an image are different from a specified expression.

Return true is all pixels of the image instance are different to the specified expression.

Parameters

expression

Value string describing the way pixel values are compared.

operator!=() [3/3]

bool operator!=

(

const CImg< t > &

img

)

const

Test if two images have different sizes or values.

Return true if the image instance and the input image img have different dimensions or pixel values, and false otherwise.

Parameters

img	Input image to compare with.

Note

• Writing img1!=img2 is equivalent to !(img1==img2).

operator,() [1/2]

CImgList< typename cimg::superset<T,t>::type > operator,

(

const CImg< t > &

img

)

const

Construct an image list from two images.

Return a new list of image (CImgList instance) containing exactly two elements:

• A copy of the image instance, at position [0].
• A copy of the specified image img, at position [1].

Parameters

img	Input image that will be the second image of the resulting list.

Note

• The family of operator,() is convenient to easily create list of images, but it is also quite slow in practice (see warning below).
• Constructed lists contain no shared images. If image instance or input image img are shared, they are inserted as new non-shared copies in the resulting list.
• The pixel type of the returned list may be a superset of the initial pixel type T, if necessary.

Warning

• Pipelining operator,() N times will perform N copies of the entire content of a (growing) image list. This may become very expensive in terms of speed and used memory. You should avoid using this technique to build a new CImgList instance from several images, if you are seeking for performance. Fast insertions of images in an image list are possible with CImgList<T>::insert(const CImg<t>&,unsigned int,bool) or move_to(CImgList<t>&,unsigned int).

Example

const CImg<float>
   img1("reference.jpg"),
   img2 = img1.get_mirror('x'),
   img3 = img2.get_blur(5);
const CImgList<float> list = (img1,img2); // Create list of two elements from 'img1' and 'img2'
(list,img3).display();                    // Display image list containing copies of 'img1','img2' and 'img3'

operator,() [2/2]

CImgList< typename cimg::superset<T,t>::type > operator,

(

const CImgList< t > &

list

)

const

Construct an image list from image instance and an input image list.

Return a new list of images (CImgList instance) containing exactly list.size() + 1 elements:

• A copy of the image instance, at position [0].
• A copy of the specified image list list, from positions [1] to [list.size()].

Parameters

list	Input image list that will be appended to the image instance.

Note

• Similar to operator,(const CImg<t>&) const, except that it takes an image list as an argument.

operator<()

CImgList<T> operator<

(

const char

axis

)

const

Split image along specified axis.

Return a new list of images (CImgList instance) containing the split components of the instance image along the specified axis.

Parameters

axis	Splitting axis (can be 'x','y','z' or 'c')

Note

• Similar to get_split(char,int) const, with default second argument.

Example

const CImg<unsigned char> img("reference.jpg"); // Load a RGB color image
const CImgList<unsigned char> list = (img<'c'); // Get a list of its three R,G,B channels
(img,list).display();

pixel_type()

static const char* pixel_type ( )

static

Return the type of image pixel values as a C string.

Return a char* string containing the usual type name of the image pixel values (i.e. a stringified version of the template parameter T).

Note

• The returned string does not contain any spaces.
• If the pixel type T does not correspond to a registered type, the string "unknown" is returned.

width()

int width

(

)

const

Return the number of image columns.

Return the image width, i.e. the image dimension along the X-axis.

Note

• The width() of an empty image is equal to 0.
• width() is typically equal to 1 when considering images as vectors for matrix calculations.
• width() returns an int, although the image width is internally stored as an unsigned int. Using an int is safer and prevents arithmetic traps possibly encountered when doing calculations involving unsigned int variables. Access to the initial unsigned int variable is possible (though not recommended) by (*this)._width.

height()

int height

(

)

const

Return the number of image rows.

Return the image height, i.e. the image dimension along the Y-axis.

Note

• The height() of an empty image is equal to 0.
• height() returns an int, although the image height is internally stored as an unsigned int. Using an int is safer and prevents arithmetic traps possibly encountered when doing calculations involving unsigned int variables. Access to the initial unsigned int variable is possible (though not recommended) by (*this)._height.

depth()

int depth

(

)

const

Return the number of image slices.

Return the image depth, i.e. the image dimension along the Z-axis.

Note

• The depth() of an empty image is equal to 0.
• depth() is typically equal to 1 when considering usual 2D images. When depth()> 1, the image is said to be volumetric.
• depth() returns an int, although the image depth is internally stored as an unsigned int. Using an int is safer and prevents arithmetic traps possibly encountered when doing calculations involving unsigned int variables. Access to the initial unsigned int variable is possible (though not recommended) by (*this)._depth.

spectrum()

int spectrum

(

)

const

Return the number of image channels.

Return the number of image channels, i.e. the image dimension along the C-axis.

Note

• The spectrum() of an empty image is equal to 0.
• spectrum() is typically equal to 1 when considering scalar-valued images, to 3 for RGB-coded color images, and to 4 for RGBA-coded color images (with alpha-channel). The number of channels of an image instance is not limited. The meaning of the pixel values is not linked up to the number of channels (e.g. a 4-channel image may indifferently stands for a RGBA or CMYK color image).
• spectrum() returns an int, although the image spectrum is internally stored as an unsigned int. Using an int is safer and prevents arithmetic traps possibly encountered when doing calculations involving unsigned int variables. Access to the initial unsigned int variable is possible (though not recommended) by (*this)._spectrum.

size()

ulongT size

(

)

const

Return the total number of pixel values.

Return width()*height()*depth()*spectrum(), i.e. the total number of values of type T in the pixel buffer of the image instance.

Note

• The size() of an empty image is equal to 0.
• The allocated memory size for a pixel buffer of a non-shared CImg<T> instance is equal to size()*sizeof(T).

Example

const CImg<float> img(100,100,1,3);               // Construct new 100x100 color image
if (img.size()==30000)                            // Test succeeds
  std::printf("Pixel buffer uses %lu bytes",
              img.size()*sizeof(float));

data() [1/2]

T* data

(

)

Return a pointer to the first pixel value.

Return a T*, or a const T* pointer to the first value in the pixel buffer of the image instance, whether the instance is const or not.

Note

• The data() of an empty image is equal to 0 (null pointer).
• The allocated pixel buffer for the image instance starts from data() and goes to data()+size() - 1 (included).
• To get the pointer to one particular location of the pixel buffer, use data(unsigned int,unsigned int,unsigned int,unsigned int) instead.

data() [2/2]

T* data	(	const unsigned int	x,
		const unsigned int	y = 0,
		const unsigned int	z = 0,
		const unsigned int	c = 0
	)

Return a pointer to a located pixel value.

Return a T*, or a const T* pointer to the value located at (x,y,z,c) in the pixel buffer of the image instance, whether the instance is const or not.

Parameters

x	X-coordinate of the pixel value.
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.
c	C-coordinate of the pixel value.

Note

• Writing img.data(x,y,z,c) is equivalent to &(img(x,y,z,c)). Thus, this method has the same properties as operator()(unsigned int,unsigned int,unsigned int,unsigned int).

offset()

longT offset	(	const int	x,
		const int	y = 0,
		const int	z = 0,
		const int	c = 0
	)		const

Return the offset to a located pixel value, with respect to the beginning of the pixel buffer.

Parameters

x	X-coordinate of the pixel value.
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.
c	C-coordinate of the pixel value.

Note

• Writing img.data(x,y,z,c) is equivalent to &(img(x,y,z,c)) - img.data(). Thus, this method has the same properties as operator()(unsigned int,unsigned int,unsigned int,unsigned int).

Example

const CImg<float> img(100,100,1,3);      // Define a 100x100 RGB-color image
const long off = img.offset(10,10,0,2);  // Get the offset of the blue value of the pixel located at (10,10)
const float val = img[off];              // Get the blue value of this pixel

begin()

iterator begin

(

)

Return a CImg<T>::iterator pointing to the first pixel value.

Note

• Equivalent to data().
• It has been mainly defined for compatibility with STL naming conventions.

end()

iterator end

(

)

Return a CImg<T>::iterator pointing next to the last pixel value.

Note

• Writing img.end() is equivalent to img.data() + img.size().
• It has been mainly defined for compatibility with STL naming conventions.

Warning

• The returned iterator actually points to a value located outside the acceptable bounds of the pixel buffer. Trying to read or write the content of the returned iterator will probably result in a crash. Use it mainly as a strict upper bound for a CImg<T>::iterator.

Example

CImg<float> img(100,100,1,3); // Define a 100x100 RGB color image
// 'img.end()' used below as an upper bound for the iterator.
for (CImg<float>::iterator it = img.begin(); it<img.end(); ++it)
  *it = 0;

front()

T& front

(

)

Return a reference to the first pixel value.

Note

• Writing img.front() is equivalent to img[0], or img(0,0,0,0).
• It has been mainly defined for compatibility with STL naming conventions.

back()

T& back

(

)

Return a reference to the last pixel value.

Note

• Writing img.back() is equivalent to img[img.size() - 1], or img(img.width() - 1,img.height() - 1,img.depth() - 1,img.spectrum() - 1).
• It has been mainly defined for compatibility with STL naming conventions.

at() [1/2]

T& at	(	const int	offset,
		const T &	out_value
	)

Access to a pixel value at a specified offset, using Dirichlet boundary conditions.

Return a reference to the pixel value of the image instance located at a specified offset, or to a specified default value in case of out-of-bounds access.

Parameters

offset	Offset to the desired pixel value.
out_value	Default value returned if offset is outside image bounds.

Note

• Writing img.at(offset,out_value) is similar to img[offset], except that if offset is outside bounds (e.g. offset<0 or offset>=img.size()), a reference to a value out_value is safely returned instead.
• Due to the additional boundary checking operation, this method is slower than operator()(). Use it when you are not sure about the validity of the specified pixel offset.

at() [2/2]

T& at

(

const int

offset

)

Access to a pixel value at a specified offset, using Neumann boundary conditions.

Return a reference to the pixel value of the image instance located at a specified offset, or to the nearest pixel location in the image instance in case of out-of-bounds access.

Parameters

offset

Offset to the desired pixel value.

Note

• Similar to at(int,const T), except that an out-of-bounds access returns the value of the nearest pixel in the image instance, regarding the specified offset, i.e.
  • If offset<0, then img[0] is returned.
  • If offset>=img.size(), then img[img.size() - 1] is returned.
• Due to the additional boundary checking operation, this method is slower than operator()(). Use it when you are not sure about the validity of the specified pixel offset.
• If you know your image instance is not empty, you may rather use the slightly faster method _at(int).

atX() [1/2]

T& atX	(	const int	x,
		const int	y,
		const int	z,
		const int	c,
		const T &	out_value
	)

Access to a pixel value, using Dirichlet boundary conditions for the X-coordinate.

Return a reference to the pixel value of the image instance located at (x,y,z,c), or to a specified default value in case of out-of-bounds access along the X-axis.

Parameters

x	X-coordinate of the pixel value.
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.
c	C-coordinate of the pixel value.
out_value	Default value returned if (x,y,z,c) is outside image bounds.

Note

• Similar to operator()(), except that an out-of-bounds access along the X-axis returns the specified value out_value.
• Due to the additional boundary checking operation, this method is slower than operator()(). Use it when you are not sure about the validity of the specified pixel coordinates.

Warning

• There is no boundary checking performed for the Y,Z and C-coordinates, so they must be inside image bounds.

atX() [2/2]

T& atX	(	const int	x,
		const int	y = 0,
		const int	z = 0,
		const int	c = 0
	)

Access to a pixel value, using Neumann boundary conditions for the X-coordinate.

Return a reference to the pixel value of the image instance located at (x,y,z,c), or to the nearest pixel location in the image instance in case of out-of-bounds access along the X-axis.

Parameters

x	X-coordinate of the pixel value.
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.
c	C-coordinate of the pixel value.

Note

• Similar to at(int,int,int,int,const T), except that an out-of-bounds access returns the value of the nearest pixel in the image instance, regarding the specified X-coordinate.
• Due to the additional boundary checking operation, this method is slower than operator()(). Use it when you are not sure about the validity of the specified pixel coordinates.
• If you know your image instance is not empty, you may rather use the slightly faster method _at(int,int,int,int).

Warning

• There is no boundary checking performed for the Y,Z and C-coordinates, so they must be inside image bounds.

atXY() [1/2]

T& atXY	(	const int	x,
		const int	y,
		const int	z,
		const int	c,
		const T &	out_value
	)

Access to a pixel value, using Dirichlet boundary conditions for the X and Y-coordinates.

Similar to atX(int,int,int,int,const T), except that boundary checking is performed both on X and Y-coordinates.

atXY() [2/2]

T& atXY	(	const int	x,
		const int	y,
		const int	z = 0,
		const int	c = 0
	)

Access to a pixel value, using Neumann boundary conditions for the X and Y-coordinates.

Similar to atX(int,int,int,int), except that boundary checking is performed both on X and Y-coordinates.

Note

• If you know your image instance is not empty, you may rather use the slightly faster method _atXY(int,int,int,int).

atXYZ() [1/2]

T& atXYZ	(	const int	x,
		const int	y,
		const int	z,
		const int	c,
		const T &	out_value
	)

Access to a pixel value, using Dirichlet boundary conditions for the X,Y and Z-coordinates.

Similar to atX(int,int,int,int,const T), except that boundary checking is performed both on X,Y and Z-coordinates.

atXYZ() [2/2]

T& atXYZ	(	const int	x,
		const int	y,
		const int	z,
		const int	c = 0
	)

Access to a pixel value, using Neumann boundary conditions for the X,Y and Z-coordinates.

Similar to atX(int,int,int,int), except that boundary checking is performed both on X,Y and Z-coordinates.

Note

• If you know your image instance is not empty, you may rather use the slightly faster method _atXYZ(int,int,int,int).

atXYZC() [1/2]

T& atXYZC	(	const int	x,
		const int	y,
		const int	z,
		const int	c,
		const T &	out_value
	)

Access to a pixel value, using Dirichlet boundary conditions.

Similar to atX(int,int,int,int,const T), except that boundary checking is performed on all X,Y,Z and C-coordinates.

atXYZC() [2/2]

T& atXYZC	(	const int	x,
		const int	y,
		const int	z,
		const int	c
	)

Access to a pixel value, using Neumann boundary conditions.

Similar to atX(int,int,int,int), except that boundary checking is performed on all X,Y,Z and C-coordinates.

Note

• If you know your image instance is not empty, you may rather use the slightly faster method _atXYZC(int,int,int,int).

linear_atX() [1/2]

Tfloat linear_atX	(	const float	fx,
		const int	y,
		const int	z,
		const int	c,
		const T &	out_value
	)		const

Return pixel value, using linear interpolation and Dirichlet boundary conditions for the X-coordinate.

Return a linearly-interpolated pixel value of the image instance located at (fx,y,z,c), or a specified default value in case of out-of-bounds access along the X-axis.

Parameters

fx	X-coordinate of the pixel value (float-valued).
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.
c	C-coordinate of the pixel value.
out_value	Default value returned if (fx,y,z,c) is outside image bounds.

Note

• Similar to atX(int,int,int,int,const T), except that the returned pixel value is approximated by a linear interpolation along the X-axis, if corresponding coordinates are not integers.
• The type of the returned pixel value is extended to float, if the pixel type T is not float-valued.

Warning

• There is no boundary checking performed for the Y,Z and C-coordinates, so they must be inside image bounds.

linear_atX() [2/2]

Tfloat linear_atX	(	const float	fx,
		const int	y = 0,
		const int	z = 0,
		const int	c = 0
	)		const

Return pixel value, using linear interpolation and Neumann boundary conditions for the X-coordinate.

Return a linearly-interpolated pixel value of the image instance located at (fx,y,z,c), or the value of the nearest pixel location in the image instance in case of out-of-bounds access along the X-axis.

Parameters

fx	X-coordinate of the pixel value (float-valued).
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.
c	C-coordinate of the pixel value.

Note

• Similar to linear_atX(float,int,int,int,const T) const, except that an out-of-bounds access returns the value of the nearest pixel in the image instance, regarding the specified X-coordinate.
• If you know your image instance is not empty, you may rather use the slightly faster method _linear_atX(float,int,int,int).

Warning

• There is no boundary checking performed for the Y,Z and C-coordinates, so they must be inside image bounds.

linear_atXY() [1/2]

Tfloat linear_atXY	(	const float	fx,
		const float	fy,
		const int	z,
		const int	c,
		const T &	out_value
	)		const

Return pixel value, using linear interpolation and Dirichlet boundary conditions for the X and Y-coordinates.

Similar to linear_atX(float,int,int,int,const T) const, except that the linear interpolation and the boundary checking are achieved both for X and Y-coordinates.

linear_atXY() [2/2]

Tfloat linear_atXY	(	const float	fx,
		const float	fy,
		const int	z = 0,
		const int	c = 0
	)		const

Return pixel value, using linear interpolation and Neumann boundary conditions for the X and Y-coordinates.

Similar to linear_atX(float,int,int,int) const, except that the linear interpolation and the boundary checking are achieved both for X and Y-coordinates.

Note

• If you know your image instance is not empty, you may rather use the slightly faster method _linear_atXY(float,float,int,int).

linear_atXYZ() [1/2]

Tfloat linear_atXYZ	(	const float	fx,
		const float	fy,
		const float	fz,
		const int	c,
		const T &	out_value
	)		const

Return pixel value, using linear interpolation and Dirichlet boundary conditions for the X,Y and Z-coordinates.

Similar to linear_atX(float,int,int,int,const T) const, except that the linear interpolation and the boundary checking are achieved both for X,Y and Z-coordinates.

linear_atXYZ() [2/2]

Tfloat linear_atXYZ	(	const float	fx,
		const float	fy = 0,
		const float	fz = 0,
		const int	c = 0
	)		const

Return pixel value, using linear interpolation and Neumann boundary conditions for the X,Y and Z-coordinates.

Similar to linear_atX(float,int,int,int) const, except that the linear interpolation and the boundary checking are achieved both for X,Y and Z-coordinates.

Note

• If you know your image instance is not empty, you may rather use the slightly faster method _linear_atXYZ(float,float,float,int).

linear_atXYZC() [1/2]

Tfloat linear_atXYZC	(	const float	fx,
		const float	fy,
		const float	fz,
		const float	fc,
		const T &	out_value
	)		const

Return pixel value, using linear interpolation and Dirichlet boundary conditions for all X,Y,Z,C-coordinates.

Similar to linear_atX(float,int,int,int,const T) const, except that the linear interpolation and the boundary checking are achieved for all X,Y,Z and C-coordinates.

linear_atXYZC() [2/2]

Tfloat linear_atXYZC	(	const float	fx,
		const float	fy = 0,
		const float	fz = 0,
		const float	fc = 0
	)		const

Return pixel value, using linear interpolation and Neumann boundary conditions for all X,Y,Z and C-coordinates.

Similar to linear_atX(float,int,int,int) const, except that the linear interpolation and the boundary checking are achieved for all X,Y,Z and C-coordinates.

Note

• If you know your image instance is not empty, you may rather use the slightly faster method _linear_atXYZC(float,float,float,float).

cubic_atX() [1/2]

Tfloat cubic_atX	(	const float	fx,
		const int	y,
		const int	z,
		const int	c,
		const T &	out_value
	)		const

Return pixel value, using cubic interpolation and Dirichlet boundary conditions for the X-coordinate.

Return a cubicly-interpolated pixel value of the image instance located at (fx,y,z,c), or a specified default value in case of out-of-bounds access along the X-axis. The cubic interpolation uses Hermite splines.

Parameters

fx	d X-coordinate of the pixel value (float-valued).
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.
c	C-coordinate of the pixel value.
out_value	Default value returned if (fx,y,z,c) is outside image bounds.

Note

• Similar to linear_atX(float,int,int,int,const T) const, except that the returned pixel value is approximated by a cubic interpolation along the X-axis.
• The type of the returned pixel value is extended to float, if the pixel type T is not float-valued.

Warning

• There is no boundary checking performed for the Y,Z and C-coordinates, so they must be inside image bounds.

cubic_atX_c() [1/2]

T cubic_atX_c	(	const float	fx,
		const int	y,
		const int	z,
		const int	c,
		const T &	out_value
	)		const

Return clamped pixel value, using cubic interpolation and Dirichlet boundary conditions for the X-coordinate.

Similar to cubic_atX(float,int,int,int,const T) const, except that the return value is clamped to stay in the min/max range of the datatype T.

cubic_atX() [2/2]

Tfloat cubic_atX	(	const float	fx,
		const int	y = 0,
		const int	z = 0,
		const int	c = 0
	)		const

Return pixel value, using cubic interpolation and Neumann boundary conditions for the X-coordinate.

Return a cubicly-interpolated pixel value of the image instance located at (fx,y,z,c), or the value of the nearest pixel location in the image instance in case of out-of-bounds access along the X-axis. The cubic interpolation uses Hermite splines.

Parameters

fx	X-coordinate of the pixel value (float-valued).
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.
c	C-coordinate of the pixel value.

Note

• Similar to cubic_atX(float,int,int,int,const T) const, except that the returned pixel value is approximated by a cubic interpolation along the X-axis.
• If you know your image instance is not empty, you may rather use the slightly faster method _cubic_atX(float,int,int,int).

Warning

• There is no boundary checking performed for the Y,Z and C-coordinates, so they must be inside image bounds.

cubic_atX_c() [2/2]

T cubic_atX_c	(	const float	fx,
		const int	y,
		const int	z,
		const int	c
	)		const

Return clamped pixel value, using cubic interpolation and Neumann boundary conditions for the X-coordinate.

Similar to cubic_atX(float,int,int,int) const, except that the return value is clamped to stay in the min/max range of the datatype T.

cubic_atXY() [1/2]

Tfloat cubic_atXY	(	const float	fx,
		const float	fy,
		const int	z,
		const int	c,
		const T &	out_value
	)		const

Return pixel value, using cubic interpolation and Dirichlet boundary conditions for the X and Y-coordinates.

Similar to cubic_atX(float,int,int,int,const T) const, except that the cubic interpolation and boundary checking are achieved both for X and Y-coordinates.

cubic_atXY_c() [1/2]

T cubic_atXY_c	(	const float	fx,
		const float	fy,
		const int	z,
		const int	c,
		const T &	out_value
	)		const

Return clamped pixel value, using cubic interpolation and Dirichlet boundary conditions for the X,Y-coordinates.

Similar to cubic_atXY(float,float,int,int,const T) const, except that the return value is clamped to stay in the min/max range of the datatype T.

cubic_atXY() [2/2]

Tfloat cubic_atXY	(	const float	fx,
		const float	fy,
		const int	z = 0,
		const int	c = 0
	)		const

Return pixel value, using cubic interpolation and Neumann boundary conditions for the X and Y-coordinates.

Similar to cubic_atX(float,int,int,int) const, except that the cubic interpolation and boundary checking are achieved for both X and Y-coordinates.

Note

• If you know your image instance is not empty, you may rather use the slightly faster method _cubic_atXY(float,float,int,int).

cubic_atXY_c() [2/2]

T cubic_atXY_c	(	const float	fx,
		const float	fy,
		const int	z,
		const int	c
	)		const

Return clamped pixel value, using cubic interpolation and Neumann boundary conditions for the X,Y-coordinates.

Similar to cubic_atXY(float,float,int,int) const, except that the return value is clamped to stay in the min/max range of the datatype T.

cubic_atXYZ() [1/2]

Tfloat cubic_atXYZ	(	const float	fx,
		const float	fy,
		const float	fz,
		const int	c,
		const T &	out_value
	)		const

Return pixel value, using cubic interpolation and Dirichlet boundary conditions for the X,Y and Z-coordinates.

Similar to cubic_atX(float,int,int,int,const T) const, except that the cubic interpolation and boundary checking are achieved both for X,Y and Z-coordinates.

cubic_atXYZ_c() [1/2]

T cubic_atXYZ_c	(	const float	fx,
		const float	fy,
		const float	fz,
		const int	c,
		const T &	out_value
	)		const

Return clamped pixel value, using cubic interpolation and Dirichlet boundary conditions for the XYZ-coordinates.

Similar to cubic_atXYZ(float,float,float,int,const T) const, except that the return value is clamped to stay in the min/max range of the datatype T.

cubic_atXYZ() [2/2]

Tfloat cubic_atXYZ	(	const float	fx,
		const float	fy,
		const float	fz,
		const int	c = 0
	)		const

Return pixel value, using cubic interpolation and Neumann boundary conditions for the X,Y and Z-coordinates.

Similar to cubic_atX(float,int,int,int) const, except that the cubic interpolation and boundary checking are achieved both for X,Y and Z-coordinates.

Note

• If you know your image instance is not empty, you may rather use the slightly faster method _cubic_atXYZ(float,float,float,int).

cubic_atXYZ_c() [2/2]

T cubic_atXYZ_c	(	const float	fx,
		const float	fy,
		const float	fz,
		const int	c
	)		const

Return clamped pixel value, using cubic interpolation and Neumann boundary conditions for the XYZ-coordinates.

Similar to cubic_atXYZ(float,float,float,int) const, except that the return value is clamped to stay in the min/max range of the datatype T.

cubic_atXYZ_p()

Tfloat cubic_atXYZ_p	(	const float	fx,
		const float	fy,
		const float	fz,
		const int	c = 0
	)		const

Return pixel value, using cubic interpolation and Neumann boundary conditions for the X,Y and Z-coordinates.

Similar to cubic_atX(float,int,int,int) const, except that the cubic interpolation and boundary checking are achieved both for X,Y and Z-coordinates.

Note

• If you know your image instance is not empty, you may rather use the slightly faster method _cubic_atXYZ(float,float,float,int).

set_linear_atX()

CImg<T>& set_linear_atX	(	const T &	value,
		const float	fx,
		const int	y = 0,
		const int	z = 0,
		const int	c = 0,
		const bool	is_added = false
	)

Set pixel value, using linear interpolation for the X-coordinates.

Set pixel value at specified coordinates (fx,y,z,c) in the image instance, in a way that the value is spread amongst several neighbors if the pixel coordinates are float-valued.

Parameters

value	Pixel value to set.
fx	X-coordinate of the pixel value (float-valued).
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.
c	C-coordinate of the pixel value.
is_added	Tells if the pixel value is added to (true), or simply replace (false) the current image pixel(s).

Returns

A reference to the current image instance.

Note

• Calling this method with out-of-bounds coordinates does nothing.

set_linear_atXY()

CImg<T>& set_linear_atXY	(	const T &	value,
		const float	fx,
		const float	fy = 0,
		const int	z = 0,
		const int	c = 0,
		const bool	is_added = false
	)

Set pixel value, using linear interpolation for the X and Y-coordinates.

Similar to set_linear_atX(const T&,float,int,int,int,bool), except that the linear interpolation is achieved both for X and Y-coordinates.

set_linear_atXYZ()

CImg<T>& set_linear_atXYZ	(	const T &	value,
		const float	fx,
		const float	fy = 0,
		const float	fz = 0,
		const int	c = 0,
		const bool	is_added = false
	)

Set pixel value, using linear interpolation for the X,Y and Z-coordinates.

Similar to set_linear_atXY(const T&,float,float,int,int,bool), except that the linear interpolation is achieved both for X,Y and Z-coordinates.

value_string()

CImg<charT> value_string	(	const char	separator = ',',
		const unsigned int	max_size = 0,
		const char *const	format = 0
	)		const

Return a C-string containing a list of all values of the image instance.

Return a new CImg<char> image whose buffer data() is a char* string describing the list of all pixel values of the image instance (written in base 10), separated by specified separator character.

Parameters

separator	A char character which specifies the separator between values in the returned C-string.
max_size	Maximum size of the returned image (or 0 if no limits are set).
format	For float/double-values, tell the printf format used to generate the text representation of the numbers (or 0 for default representation).

Note

• The returned image is never empty.
• For an empty image instance, the returned string is "".
• If max_size is equal to 0, there are no limits on the size of the returned string.
• Otherwise, if the maximum number of string characters is exceeded, the value string is cut off and terminated by character '\0'. In that case, the returned image size is max_size + 1.

is_shared()

bool is_shared

(

)

const

Test shared state of the pixel buffer.

Return true if image instance has a shared memory buffer, and false otherwise.

Note

• A shared image do not own his pixel buffer data() and will not deallocate it on destruction.
• Most of the time, a CImg<T> image instance will not be shared.
• A shared image can only be obtained by a limited set of constructors and methods (see list below).

is_empty()

bool is_empty

(

)

const

Test if image instance is empty.

Return true, if image instance is empty, i.e. does not contain any pixel values, has dimensions 0 x 0 x 0 x 0 and a pixel buffer pointer set to 0 (null pointer), and false otherwise.

is_inf()

bool is_inf

(

)

const

Test if image instance contains a 'inf' value.

Return true, if image instance contains a 'inf' value, and false otherwise.

is_nan()

bool is_nan

(

)

const

Test if image instance contains a NaN value.

Return true, if image instance contains a NaN value, and false otherwise.

is_sameXY() [1/3]

bool is_sameXY	(	const unsigned int	size_x,
		const unsigned int	size_y
	)		const

Test if image width and height are equal to specified values.

Test if is_sameX(unsigned int) const and is_sameY(unsigned int) const are both verified.

is_sameXY() [2/3]

bool is_sameXY

(

const CImg< t > &

img

)

const

Test if image width and height are the same as that of another image.

Test if is_sameX(const CImg<t>&) const and is_sameY(const CImg<t>&) const are both verified.

is_sameXY() [3/3]

bool is_sameXY

(

const CImgDisplay &

disp

)

const

Test if image width and height are the same as that of an existing display window.

Test if is_sameX(const CImgDisplay&) const and is_sameY(const CImgDisplay&) const are both verified.

is_sameXZ() [1/2]

bool is_sameXZ	(	const unsigned int	size_x,
		const unsigned int	size_z
	)		const

Test if image width and depth are equal to specified values.

Test if is_sameX(unsigned int) const and is_sameZ(unsigned int) const are both verified.

is_sameXZ() [2/2]

bool is_sameXZ

(

const CImg< t > &

img

)

const

Test if image width and depth are the same as that of another image.

Test if is_sameX(const CImg<t>&) const and is_sameZ(const CImg<t>&) const are both verified.

is_sameXC() [1/2]

bool is_sameXC	(	const unsigned int	size_x,
		const unsigned int	size_c
	)		const

Test if image width and spectrum are equal to specified values.

Test if is_sameX(unsigned int) const and is_sameC(unsigned int) const are both verified.

is_sameXC() [2/2]

bool is_sameXC

(

const CImg< t > &

img

)

const

Test if image width and spectrum are the same as that of another image.

Test if is_sameX(const CImg<t>&) const and is_sameC(const CImg<t>&) const are both verified.

is_sameYZ() [1/2]

bool is_sameYZ	(	const unsigned int	size_y,
		const unsigned int	size_z
	)		const

Test if image height and depth are equal to specified values.

Test if is_sameY(unsigned int) const and is_sameZ(unsigned int) const are both verified.

is_sameYZ() [2/2]

bool is_sameYZ

(

const CImg< t > &

img

)

const

Test if image height and depth are the same as that of another image.

Test if is_sameY(const CImg<t>&) const and is_sameZ(const CImg<t>&) const are both verified.

is_sameYC() [1/2]

bool is_sameYC	(	const unsigned int	size_y,
		const unsigned int	size_c
	)		const

Test if image height and spectrum are equal to specified values.

Test if is_sameY(unsigned int) const and is_sameC(unsigned int) const are both verified.

is_sameYC() [2/2]

bool is_sameYC

(

const CImg< t > &

img

)

const

Test if image height and spectrum are the same as that of another image.

Test if is_sameY(const CImg<t>&) const and is_sameC(const CImg<t>&) const are both verified.

is_sameZC() [1/2]

bool is_sameZC	(	const unsigned int	size_z,
		const unsigned int	size_c
	)		const

Test if image depth and spectrum are equal to specified values.

Test if is_sameZ(unsigned int) const and is_sameC(unsigned int) const are both verified.

is_sameZC() [2/2]

bool is_sameZC

(

const CImg< t > &

img

)

const

Test if image depth and spectrum are the same as that of another image.

Test if is_sameZ(const CImg<t>&) const and is_sameC(const CImg<t>&) const are both verified.

is_sameXYZ() [1/2]

bool is_sameXYZ	(	const unsigned int	size_x,
		const unsigned int	size_y,
		const unsigned int	size_z
	)		const

Test if image width, height and depth are equal to specified values.

Test if is_sameXY(unsigned int,unsigned int) const and is_sameZ(unsigned int) const are both verified.

is_sameXYZ() [2/2]

bool is_sameXYZ

(

const CImg< t > &

img

)

const

Test if image width, height and depth are the same as that of another image.

Test if is_sameXY(const CImg<t>&) const and is_sameZ(const CImg<t>&) const are both verified.

is_sameXYC() [1/2]

bool is_sameXYC	(	const unsigned int	size_x,
		const unsigned int	size_y,
		const unsigned int	size_c
	)		const

Test if image width, height and spectrum are equal to specified values.

Test if is_sameXY(unsigned int,unsigned int) const and is_sameC(unsigned int) const are both verified.

is_sameXYC() [2/2]

bool is_sameXYC

(

const CImg< t > &

img

)

const

Test if image width, height and spectrum are the same as that of another image.

Test if is_sameXY(const CImg<t>&) const and is_sameC(const CImg<t>&) const are both verified.

is_sameXZC() [1/2]

bool is_sameXZC	(	const unsigned int	size_x,
		const unsigned int	size_z,
		const unsigned int	size_c
	)		const

Test if image width, depth and spectrum are equal to specified values.

Test if is_sameXZ(unsigned int,unsigned int) const and is_sameC(unsigned int) const are both verified.

is_sameXZC() [2/2]

bool is_sameXZC

(

const CImg< t > &

img

)

const

Test if image width, depth and spectrum are the same as that of another image.

Test if is_sameXZ(const CImg<t>&) const and is_sameC(const CImg<t>&) const are both verified.

is_sameYZC() [1/2]

bool is_sameYZC	(	const unsigned int	size_y,
		const unsigned int	size_z,
		const unsigned int	size_c
	)		const

Test if image height, depth and spectrum are equal to specified values.

Test if is_sameYZ(unsigned int,unsigned int) const and is_sameC(unsigned int) const are both verified.

is_sameYZC() [2/2]

bool is_sameYZC

(

const CImg< t > &

img

)

const

Test if image height, depth and spectrum are the same as that of another image.

Test if is_sameYZ(const CImg<t>&) const and is_sameC(const CImg<t>&) const are both verified.

is_sameXYZC() [1/2]

bool is_sameXYZC	(	const unsigned int	size_x,
		const unsigned int	size_y,
		const unsigned int	size_z,
		const unsigned int	size_c
	)		const

Test if image width, height, depth and spectrum are equal to specified values.

Test if is_sameXYZ(unsigned int,unsigned int,unsigned int) const and is_sameC(unsigned int) const are both verified.

is_sameXYZC() [2/2]

bool is_sameXYZC

(

const CImg< t > &

img

)

const

Test if image width, height, depth and spectrum are the same as that of another image.

Test if is_sameXYZ(const CImg<t>&) const and is_sameC(const CImg<t>&) const are both verified.

containsXYZC()

bool containsXYZC	(	const int	x,
		const int	y = 0,
		const int	z = 0,
		const int	c = 0
	)		const

Test if specified coordinates are inside image bounds.

Return true if pixel located at (x,y,z,c) is inside bounds of the image instance, and false otherwise.

Parameters

x	X-coordinate of the pixel value.
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.
c	C-coordinate of the pixel value.

Note

• Return true only if all these conditions are verified:
  • The image instance is not empty.
  • 0<=x<=width() - 1.
  • 0<=y<=height() - 1.
  • 0<=z<=depth() - 1.
  • 0<=c<=spectrum() - 1.

contains() [1/5]

bool contains	(	const T &	pixel,
		t &	x,
		t &	y,
		t &	z,
		t &	c
	)		const

Test if pixel value is inside image bounds and get its X,Y,Z and C-coordinates.

Return true, if specified reference refers to a pixel value inside bounds of the image instance, and false otherwise.

Parameters

	pixel	Reference to pixel value to test.
[out]	x	X-coordinate of the pixel value, if test succeeds.
[out]	y	Y-coordinate of the pixel value, if test succeeds.
[out]	z	Z-coordinate of the pixel value, if test succeeds.
[out]	c	C-coordinate of the pixel value, if test succeeds.

Note

• Useful to convert an offset to a buffer value into pixel value coordinates:

  const CImg<float> img(100,100,1,3);      // Construct a 100x100 RGB color image
  const unsigned long offset = 1249;       // Offset to the pixel (49,12,0,0)
  unsigned int x,y,z,c;
  if (img.contains(img[offset],x,y,z,c)) { // Convert offset to (x,y,z,c) coordinates
    std::printf("Offset %u refers to pixel located at (%u,%u,%u,%u).\n",
                offset,x,y,z,c);
  }

contains() [2/5]

bool contains	(	const T &	pixel,
		t &	x,
		t &	y,
		t &	z
	)		const

Test if pixel value is inside image bounds and get its X,Y and Z-coordinates.

Similar to contains(const T&,t&,t&,t&,t&) const, except that only the X,Y and Z-coordinates are set.

contains() [3/5]

bool contains	(	const T &	pixel,
		t &	x,
		t &	y
	)		const

Test if pixel value is inside image bounds and get its X and Y-coordinates.

Similar to contains(const T&,t&,t&,t&,t&) const, except that only the X and Y-coordinates are set.

contains() [4/5]

bool contains	(	const T &	pixel,
		t &	x
	)		const

Test if pixel value is inside image bounds and get its X-coordinate.

Similar to contains(const T&,t&,t&,t&,t&) const, except that only the X-coordinate is set.

contains() [5/5]

bool contains

(

const T &

pixel

)

const

Test if pixel value is inside image bounds.

Similar to contains(const T&,t&,t&,t&,t&) const, except that no pixel coordinates are set.

is_overlapped()

bool is_overlapped

(

const CImg< t > &

img

)

const

Test if pixel buffers of instance and input images overlap.

Return true, if pixel buffers attached to image instance and input image img overlap, and false otherwise.

Parameters

img	Input image to compare with.

Note

• Buffer overlapping may happen when manipulating shared images.
• If two image buffers overlap, operating on one of the image will probably modify the other one.
• Most of the time, CImg<T> instances are non-shared and do not overlap between each others.

Example

const CImg<float>
  img1("reference.jpg"),             // Load RGB-color image
  img2 = img1.get_shared_channel(1); // Get shared version of the green channel
if (img1.is_overlapped(img2)) {      // Test succeeds, 'img1' and 'img2' overlaps
  std::printf("Buffers overlap!\n");
}

is_object3d()

bool is_object3d	(	const CImgList< tp > &	primitives,
		const CImgList< tc > &	colors,
		const to &	opacities,
		const bool	full_check = true,
		char *const	error_message = 0
	)		const

Test if the set {*this,primitives,colors,opacities} defines a valid 3D object.

Return true is the 3D object represented by the set {*this,primitives,colors,opacities} defines a valid 3D object, and false otherwise. The vertex coordinates are defined by the instance image.

Parameters

	primitives	List of primitives of the 3D object.
	colors	List of colors of the 3D object.
	opacities	List (or image) of opacities of the 3D object.
	full_check	Tells if full checking of the 3D object must be performed.
[out]	error_message	C-string to contain the error message, if the test does not succeed (at least 256 bytes).

Note

• Set full_checking to false to speed-up the 3D object checking. In this case, only the size of each 3D object component is checked.
• Size of the string error_message should be at least 128-bytes long, to be able to contain the error message.

is_CImg3d()

bool is_CImg3d	(	const bool	full_check = true,
		char *const	error_message = 0
	)		const

Test if image instance represents a valid serialization of a 3D object.

Return true if the image instance represents a valid serialization of a 3D object, and false otherwise.

Parameters

	full_check	Tells if full checking of the instance must be performed.
[out]	error_message	C-string to contain the error message, if the test does not succeed.

Note

• Set full_check to false to speed-up the 3D object checking. In this case, only the size of each 3D object component is checked.
• Size of the string error_message should be at least 256-bytes long, to be able to contain the error message.

sqr()

CImg<T>& sqr

(

)

Compute the square value of each pixel value.

Replace each pixel value of the image instance by its square value .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

Example

const CImg<float> img("reference.jpg");
(img,img.get_sqr().normalize(0,255)).display();

sqrt()

CImg<T>& sqrt

(

)

Compute the square root of each pixel value.

Replace each pixel value of the image instance by its square root .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

Example

const CImg<float> img("reference.jpg");
(img,img.get_sqrt().normalize(0,255)).display();

exp()

CImg<T>& exp

(

)

Compute the exponential of each pixel value.

Replace each pixel value of the image instance by its exponential .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

erf()

CImg<T>& erf

(

)

Compute the error function of each pixel value.

Replace each pixel value of the image instance by its error function.

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

log()

CImg<T>& log

(

)

Compute the logarithm of each pixel value.

Replace each pixel value of the image instance by its logarithm .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

log2()

CImg<T>& log2

(

)

Compute the base-2 logarithm of each pixel value.

Replace each pixel value of the image instance by its base-2 logarithm .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

log10()

CImg<T>& log10

(

)

Compute the base-10 logarithm of each pixel value.

Replace each pixel value of the image instance by its base-10 logarithm .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

abs()

CImg<T>& abs

(

)

Compute the absolute value of each pixel value.

Replace each pixel value of the image instance by its absolute value .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

sign()

CImg<T>& sign

(

)

Compute the sign of each pixel value.

Replace each pixel value of the image instance by its sign .

Note

• The sign is set to:
  • 1 if pixel value is strictly positive.
  • -1 if pixel value is strictly negative.
  • 0 if pixel value is equal to 0.
• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

cos()

CImg<T>& cos

(

)

Compute the cosine of each pixel value.

Replace each pixel value of the image instance by its cosine .

Note

• Pixel values are regarded as being in radian.
• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

sin()

CImg<T>& sin

(

)

Compute the sine of each pixel value.

Replace each pixel value of the image instance by its sine .

Note

• Pixel values are regarded as being in radian.
• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

sinc()

CImg<T>& sinc

(

)

Compute the sinc of each pixel value.

Replace each pixel value of the image instance by its sinc .

Note

• Pixel values are regarded as being exin radian.
• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

tan()

CImg<T>& tan

(

)

Compute the tangent of each pixel value.

Replace each pixel value of the image instance by its tangent .

Note

• Pixel values are regarded as being exin radian.
• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

cosh()

CImg<T>& cosh

(

)

Compute the hyperbolic cosine of each pixel value.

Replace each pixel value of the image instance by its hyperbolic cosine .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

sinh()

CImg<T>& sinh

(

)

Compute the hyperbolic sine of each pixel value.

Replace each pixel value of the image instance by its hyperbolic sine .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

tanh()

CImg<T>& tanh

(

)

Compute the hyperbolic tangent of each pixel value.

Replace each pixel value of the image instance by its hyperbolic tangent .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

acos()

CImg<T>& acos

(

)

Compute the arccosine of each pixel value.

Replace each pixel value of the image instance by its arccosine .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

asin()

CImg<T>& asin

(

)

Compute the arcsine of each pixel value.

Replace each pixel value of the image instance by its arcsine .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

atan()

CImg<T>& atan

(

)

Compute the arctangent of each pixel value.

Replace each pixel value of the image instance by its arctangent .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

atan2()

CImg<T>& atan2

(

const CImg< t > &

img

)

Compute the arctangent2 of each pixel value.

Replace each pixel value of the image instance by its arctangent2 .

Parameters

img	Image whose pixel values specify the second argument of the atan2() function.

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

Example

const CImg<float>
   img_x(100,100,1,1,"x-w/2",false),   // Define an horizontal centered gradient, from '-width/2' to 'width/2'
   img_y(100,100,1,1,"y-h/2",false),   // Define a vertical centered gradient, from '-height/2' to 'height/2'
   img_atan2 = img_y.get_atan2(img_x); // Compute atan2(y,x) for each pixel value
(img_x,img_y,img_atan2).display();

acosh()

CImg<T>& acosh

(

)

Compute the hyperbolic arccosine of each pixel value.

Replace each pixel value of the image instance by its arccosineh .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

asinh()

CImg<T>& asinh

(

)

Compute the hyperbolic arcsine of each pixel value.

Replace each pixel value of the image instance by its hyperbolic arcsine .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

atanh()

CImg<T>& atanh

(

)

Compute the hyperbolic arctangent of each pixel value.

Replace each pixel value of the image instance by its hyperbolic arctangent .

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

mul()

CImg<T>& mul

(

const CImg< t > &

img

)

In-place pointwise multiplication.

Compute the pointwise multiplication between the image instance and the specified input image img.

Parameters

img	Input image, as the second operand of the multiplication.

Note

• Similar to operator+=(const CImg<t>&), except that it performs a pointwise multiplication instead of an addition.
• It does not perform a matrix multiplication. For this purpose, use operator*=(const CImg<t>&) instead.

Example

CImg<float>
  img("reference.jpg"),
  shade(img.width,img.height(),1,1,"-(x-w/2)^2-(y-h/2)^2",false);
shade.normalize(0,1);
(img,shade,img.get_mul(shade)).display();

div()

CImg<T>& div

(

const CImg< t > &

img

)

In-place pointwise division.

Similar to mul(const CImg<t>&), except that it performs a pointwise division instead of a multiplication.

pow() [1/3]

CImg<T>& pow

(

const double

p

)

Raise each pixel value to a specified power.

Replace each pixel value of the image instance by its power .

Parameters

p	Exponent value.

Note

• The [in-place version] of this method statically casts the computed values to the pixel type T.
• The [new-instance version] returns a CImg<float> image, if the pixel type T is not float-valued.

Example

const CImg<float>
  img0("reference.jpg"),           // Load reference color image
  img1 = (img0/255).pow(1.8)*=255, // Compute gamma correction, with gamma = 1.8
  img2 = (img0/255).pow(0.5)*=255; // Compute gamma correction, with gamma = 0.5
(img0,img1,img2).display();

pow() [2/3]

CImg<T>& pow

(

const char *const

expression

)

Raise each pixel value to a power, specified from an expression.

Similar to operator+=(const char*), except it performs a pointwise exponentiation instead of an addition.

pow() [3/3]

CImg<T>& pow

(

const CImg< t > &

img

)

Raise each pixel value to a power, pointwisely specified from another image.

Similar to operator+=(const CImg<t>& img), except that it performs an exponentiation instead of an addition.

rol() [1/3]

CImg<T>& rol

(

const unsigned int

n = 1

)

Compute the bitwise left rotation of each pixel value.

Similar to operator<<=(unsigned int), except that it performs a left rotation instead of a left shift.

rol() [2/3]

CImg<T>& rol

(

const char *const

expression

)

Compute the bitwise left rotation of each pixel value.

Similar to operator<<=(const char*), except that it performs a left rotation instead of a left shift.

rol() [3/3]

CImg<T>& rol

(

const CImg< t > &

img

)

Compute the bitwise left rotation of each pixel value.

Similar to operator<<=(const CImg<t>&), except that it performs a left rotation instead of a left shift.

ror() [1/3]

CImg<T>& ror

(

const unsigned int

n = 1

)

Compute the bitwise right rotation of each pixel value.

Similar to operator>>=(unsigned int), except that it performs a right rotation instead of a right shift.

ror() [2/3]

CImg<T>& ror

(

const char *const

expression

)

Compute the bitwise right rotation of each pixel value.

Similar to operator>>=(const char*), except that it performs a right rotation instead of a right shift.

ror() [3/3]

CImg<T>& ror

(

const CImg< t > &

img

)

Compute the bitwise right rotation of each pixel value.

Similar to operator>>=(const CImg<t>&), except that it performs a right rotation instead of a right shift.

min() [1/3]

CImg<T>& min

(

const T &

value

)

Pointwise min operator between instance image and a value.

Parameters

val	Value used as the reference argument of the min operator.

Note

Replace each pixel value of the image instance by .

min() [2/3]

CImg<T>& min

(

const CImg< t > &

img

)

Pointwise min operator between two images.

Parameters

img	Image used as the reference argument of the min operator.

Note

Replace each pixel value of the image instance by .

min() [3/3]

CImg<T>& min

(

const char *const

expression

)

Pointwise min operator between an image and an expression.

Parameters

expression

Math formula as a C-string.

Note

Replace each pixel value of the image instance by .

max() [1/3]

CImg<T>& max

(

const T &

value

)

Pointwise max operator between instance image and a value.

Parameters

val	Value used as the reference argument of the max operator.

Note

Replace each pixel value of the image instance by .

max() [2/3]

CImg<T>& max

(

const CImg< t > &

img

)

Pointwise max operator between two images.

Parameters

img	Image used as the reference argument of the max operator.

Note

Replace each pixel value of the image instance by .

max() [3/3]

CImg<T>& max

(

const char *const

expression

)

Pointwise max operator between an image and an expression.

Parameters

expression

Math formula as a C-string.

Note

Replace each pixel value of the image instance by .

minabs() [1/3]

CImg<T>& minabs

(

const T &

value

)

Pointwise minabs operator between instance image and a value.

Parameters

val	Value used as the reference argument of the minabs operator.

Note

Replace each pixel value of the image instance by .

minabs() [2/3]

CImg<T>& minabs

(

const CImg< t > &

img

)

Pointwise minabs operator between two images.

Parameters

img	Image used as the reference argument of the minabs operator.

Note

Replace each pixel value of the image instance by .

minabs() [3/3]

CImg<T>& minabs

(

const char *const

expression

)

Pointwise minabs operator between an image and an expression.

Parameters

expression

Math formula as a C-string.

Note

Replace each pixel value of the image instance by .

maxabs() [1/3]

CImg<T>& maxabs

(

const T &

value

)

Pointwise maxabs operator between instance image and a value.

Parameters

val	Value used as the reference argument of the maxabs operator.

Note

Replace each pixel value of the image instance by .

maxabs() [2/3]

CImg<T>& maxabs

(

const CImg< t > &

img

)

Pointwise maxabs operator between two images.

Parameters

img	Image used as the reference argument of the maxabs operator.

Note

Replace each pixel value of the image instance by .

maxabs() [3/3]

CImg<T>& maxabs

(

const char *const

expression

)

Pointwise maxabs operator between an image and an expression.

Parameters

expression

Math formula as a C-string.

Note

Replace each pixel value of the image instance by .

min_max()

T& min_max

(

t &

max_val

)

Return a reference to the minimum pixel value as well as the maximum pixel value.

Parameters

[out]

max_val

Maximum pixel value.

max_min()

T& max_min

(

t &

min_val

)

Return a reference to the maximum pixel value as well as the minimum pixel value.

Parameters

[out]

min_val

Minimum pixel value.

kth_smallest()

T kth_smallest

(

const ulongT

k

)

const

Return the kth smallest pixel value.

Parameters

k	Rank of the smallest element searched.

variance()

double variance

(

const unsigned int

variance_method = 1

)

const

Return the variance of the pixel values.

Parameters

variance_method

Method used to estimate the variance. Can be: 0: Second moment, computed as with . 1: Best unbiased estimator, computed as . 2: Least median of squares. 3: Least trimmed of squares.

variance_mean()

double variance_mean	(	const unsigned int	variance_method,
		t &	mean
	)		const

Return the variance as well as the average of the pixel values.

Parameters

	variance_method	Method used to estimate the variance (see variance(const unsigned int) const).
[out]	mean	Average pixel value.

variance_noise()

double variance_noise

(

const unsigned int

variance_method = 2

)

const

Return estimated variance of the noise.

Parameters

variance_method

Method used to compute the variance (see variance(const unsigned int) const).

Note

Because of structures such as edges in images it is recommended to use a robust variance estimation. The variance of the noise is estimated by computing the variance of the Laplacian scaled by a factor insuring where is the noise variance.

MSE()

double MSE

(

const CImg< t > &

img

)

const

Compute the MSE (Mean-Squared Error) between two images.

Parameters

img	Image used as the second argument of the MSE operator.

PSNR()

double PSNR	(	const CImg< t > &	img,
		const double	max_value = 255
	)		const

Compute the PSNR (Peak Signal-to-Noise Ratio) between two images.

Parameters

img	Image used as the second argument of the PSNR operator.
max_value	Maximum theoretical value of the signal.

eval() [1/3]

double eval	(	const char *const	expression,
		const double	x = 0,
		const double	y = 0,
		const double	z = 0,
		const double	c = 0,
		CImgList< T > *const	list_images = 0
	)

Evaluate math formula.

Parameters

expression	Math formula, as a C-string.
x	Value of the pre-defined variable x.
y	Value of the pre-defined variable y.
z	Value of the pre-defined variable z.
c	Value of the pre-defined variable c.
list_images	A list of images attached to the specified math formula.

eval() [2/3]

void eval	(	CImg< t > &	output,
		const char *const	expression,
		const double	x = 0,
		const double	y = 0,
		const double	z = 0,
		const double	c = 0,
		CImgList< T > *const	list_images = 0
	)

Evaluate math formula.

Parameters

[out]	output	Contains values of output vector returned by the evaluated expression (or is empty if the returned type is scalar).
	expression	Math formula, as a C-string.
	x	Value of the pre-defined variable x.
	y	Value of the pre-defined variable y.
	z	Value of the pre-defined variable z.
	c	Value of the pre-defined variable c.
	list_images	A list of input images attached to the specified math formula.

eval() [3/3]

CImg<doubleT> eval	(	const char *const	expression,
		const CImg< t > &	xyzc,
		CImgList< T > *const	list_images = 0
	)

Evaluate math formula on a set of variables.

Parameters

expression	Math formula, as a C-string.
xyzc	Set of values (x,y,z,c) used for the evaluation.
list_images	A list of input images attached to the specified math formula.

get_stats()

CImg<Tdouble> get_stats

(

const unsigned int

variance_method = 1

)

const

Compute statistics vector from the pixel values.

Parameters

variance_method

Method used to compute the variance (see variance(const unsigned int) const).

Returns

Statistics vector as [min, max, mean, variance, xmin, ymin, zmin, cmin, xmax, ymax, zmax, cmax, sum, product].

magnitude()

double magnitude

(

const float

magnitude_type = 2

)

const

Compute norm of the image, viewed as a matrix.

Parameters

magnitude_type

Can be: 0: L0-norm 1: L1-norm 2: L2-norm p>2 : Lp-norm ~0U: Linf-norm

dot()

double dot

(

const CImg< t > &

img

)

const

Compute the dot product between instance and argument, viewed as matrices.

Parameters

img	Image used as a second argument of the dot product.

get_vector_at()

CImg<T> get_vector_at	(	const unsigned int	x,
		const unsigned int	y = 0,
		const unsigned int	z = 0
	)		const

Get vector-valued pixel located at specified position.

Parameters

x	X-coordinate of the pixel value.
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.

get_matrix_at()

CImg<T> get_matrix_at	(	const unsigned int	x = 0,
		const unsigned int	y = 0,
		const unsigned int	z = 0
	)		const

Get (square) matrix-valued pixel located at specified position.

Parameters

x	X-coordinate of the pixel value.
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.

Note

- The spectrum() of the image must be a square.

get_tensor_at()

CImg<T> get_tensor_at	(	const unsigned int	x,
		const unsigned int	y = 0,
		const unsigned int	z = 0
	)		const

Get tensor-valued pixel located at specified position.

Parameters

x	X-coordinate of the pixel value.
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.

set_vector_at()

CImg<T>& set_vector_at	(	const CImg< t > &	vec,
		const unsigned int	x,
		const unsigned int	y = 0,
		const unsigned int	z = 0
	)

Set vector-valued pixel at specified position.

Parameters

vec	Vector to put on the instance image.
x	X-coordinate of the pixel value.
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.

set_matrix_at()

CImg<T>& set_matrix_at	(	const CImg< t > &	mat,
		const unsigned int	x = 0,
		const unsigned int	y = 0,
		const unsigned int	z = 0
	)

Set (square) matrix-valued pixel at specified position.

Parameters

mat	Matrix to put on the instance image.
x	X-coordinate of the pixel value.
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.

set_tensor_at()

CImg<T>& set_tensor_at	(	const CImg< t > &	ten,
		const unsigned int	x = 0,
		const unsigned int	y = 0,
		const unsigned int	z = 0
	)

Set tensor-valued pixel at specified position.

Parameters

ten	Tensor to put on the instance image.
x	X-coordinate of the pixel value.
y	Y-coordinate of the pixel value.
z	Z-coordinate of the pixel value.

diagonal()

CImg<T>& diagonal

(

)

Resize image to become a diagonal matrix.

Note

Transform the image as a diagonal matrix so that each of its initial value becomes a diagonal coefficient.

identity_matrix() [1/2]

CImg<T>& identity_matrix

(

)

Replace the image by an identity matrix.

Note

If the instance image is not square, it is resized to a square matrix using its maximum dimension as a reference.

sequence() [1/2]

CImg<T>& sequence	(	const T &	a0,
		const T &	a1
	)

Fill image with a linear sequence of values.

Parameters

a0	Starting value of the sequence.
a1	Ending value of the sequence.

transpose()

CImg<T>& transpose

(

)

Transpose the image, viewed as a matrix.

Note

Equivalent to

permute_axes("yxzc"); 

.

cross()

CImg<T>& cross

(

const CImg< t > &

img

)

Compute the cross product between two 1x3 images, viewed as 3D vectors.

Parameters

img	Image used as the second argument of the cross product.

Note

The first argument of the cross product is *this.

invert()

CImg<T>& invert	(	const bool	use_LU = false,
		const float	lambda = 0
	)

Invert the instance image, viewed as a matrix.

If the instance matrix is not square, the Moore-Penrose pseudo-inverse is computed instead.

Parameters

use_LU	Choose the inverting algorithm. Can be: true: LU solver (faster but sometimes less precise). false: SVD solver (more precise but slower).
lambda	is used only in the Moore-Penrose pseudoinverse for estimating A^t.(A^t.A + lambda.Id)^-1.

solve()

CImg<T>& solve	(	const CImg< t > &	A,
		const bool	use_LU = false
	)

Solve a system of linear equations.

Parameters

A	Matrix of the linear system.
use_LU	In case of non square system (least-square solution), choose between SVD (false) or LU (true) solver. LU solver is faster for large matrices, but numerically less stable.

Note

Solve AX = B where B=*this.

solve_tridiagonal()

CImg<T>& solve_tridiagonal

(

const CImg< t > &

A

)

Solve a tridiagonal system of linear equations.

Parameters

A	Coefficients of the tridiagonal system. A is a tridiagonal matrix A = [ b0,c0,0,...; a1,b1,c1,0,... ; ... ; ...,0,aN,bN ], stored as a 3 columns matrix

Note

Solve AX=B where B=*this, using the Thomas algorithm.

eigen()

const CImg<T>& eigen	(	CImg< t > &	val,
		CImg< t > &	vec
	)		const

Compute eigenvalues and eigenvectors of the instance image, viewed as a matrix.

Parameters

[out]	val	Vector of the estimated eigenvalues, in decreasing order.
[out]	vec	Matrix of the estimated eigenvectors, sorted by columns.

get_eigen()

CImgList<Tfloat> get_eigen

(

)

const

Compute eigenvalues and eigenvectors of the instance image, viewed as a matrix.

Returns

A list of two images [val; vec], whose meaning is similar as in eigen(CImg<t>&,CImg<t>&) const.

symmetric_eigen()

const CImg<T>& symmetric_eigen	(	CImg< t > &	val,
		CImg< t > &	vec
	)		const

Compute eigenvalues and eigenvectors of the instance image, viewed as a symmetric matrix.

Parameters

[out]	val	Vector of the estimated eigenvalues, in decreasing order.
[out]	vec	Matrix of the estimated eigenvectors, sorted by columns.

get_symmetric_eigen()

CImgList<Tfloat> get_symmetric_eigen

(

)

const

Compute eigenvalues and eigenvectors of the instance image, viewed as a symmetric matrix.

Returns

A list of two images [val; vec], whose meaning are similar as in symmetric_eigen(CImg<t>&,CImg<t>&) const.

sort() [1/2]

CImg<T>& sort	(	CImg< t > &	permutations,
		const bool	is_increasing = true
	)

Sort pixel values and get sorting permutations.

Parameters

[out]	permutations	Permutation map used for the sorting.
	is_increasing	Tells if pixel values are sorted in an increasing (true) or decreasing (false) way.

sort() [2/2]

CImg<T>& sort	(	const bool	is_increasing = true,
		const char	axis = 0
	)

Sort pixel values.

Parameters

is_increasing

Tells if pixel values are sorted in an increasing (true) or decreasing (false) way.

axis

Tells if the value sorting must be done along a specific axis. Can be: 0: All pixel values are sorted, independently on their initial position. 'x': Image columns are sorted, according to the first value in each column. 'y': Image rows are sorted, according to the first value in each row. 'z': Image slices are sorted, according to the first value in each slice. 'c': Image channels are sorted, according to the first value in each channel.

SVD()

const CImg<T>& SVD	(	CImg< t > &	U,
		CImg< t > &	S,
		CImg< t > &	V,
		const bool	sorting = true,
		const unsigned int	max_iteration = 40,
		const float	lambda = 0
	)		const

Compute the SVD of the instance image, viewed as a general matrix.

Compute the SVD decomposition *this=U*S*V' where U and V are orthogonal matrices and S is a diagonal matrix. V' denotes the matrix transpose of V.

Parameters

[out]	U	First matrix of the SVD product.
[out]	S	Coefficients of the second (diagonal) matrix of the SVD product. These coefficients are stored as a vector.
[out]	V	Third matrix of the SVD product.
	sorting	Tells if the diagonal coefficients are sorted (in decreasing order).
	max_iteration	Maximum number of iterations considered for the algorithm convergence.
	lambda	Epsilon used for the algorithm convergence.

Note

The instance matrix can be computed from U,S and V by

const CImg<> A;  // Input matrix (assumed to contain some values)
CImg<> U,S,V;
A.SVD(U,S,V)

get_SVD()

CImgList<Tfloat> get_SVD	(	const bool	sorting = true,
		const unsigned int	max_iteration = 40,
		const float	lambda = 0
	)		const

Compute the SVD of the instance image, viewed as a general matrix.

Returns

A list of three images [U; S; V], whose meaning is similar as in SVD(CImg<t>&,CImg<t>&,CImg<t>&,bool,unsigned int,float) const.

project_matrix()

CImg<T>& project_matrix	(	const CImg< t > &	dictionary,
		const unsigned int	method = 0,
		const unsigned int	max_iter = 0,
		const double	max_residual = 1e-6
	)

Compute the projection of the instance matrix onto the specified dictionary.

Find the best matching projection of selected matrix onto the span of an over-complete dictionary D, using the orthogonal projection or (opt. Orthogonal) Matching Pursuit algorithm. Instance image must a 2D-matrix in which each column represent a signal to project.

Parameters

dictionary	A matrix in which each column is an element of the dictionary D.
method	Tell what projection method is applied. It can be: 0 = orthogonal projection (default). 1 = matching pursuit. 2 = matching pursuit, with a single orthogonal projection step at the end. >=3 = orthogonal matching pursuit where an orthogonal projection step is performed every 'method-2' iterations.
max_iter	Sets the max number of iterations processed for each signal. If set to '0' (default), 'max_iter' is set to the number of dictionary columns. (only meaningful for matching pursuit and its variants).
max_residual	Gives a stopping criterion on signal reconstruction accuracy. (only meaningful for matching pursuit and its variants).

Returns

A matrix W whose columns correspond to the sparse weights of associated to each input matrix column. Thus, the matrix product D*W is an approximation of the input matrix.

dijkstra() [1/2]

static CImg<T> dijkstra ( const tf &  distance, const unsigned int  nb_nodes, const unsigned int  starting_node, const unsigned int  ending_node, CImg< t > &  previous_node  )

static

Compute minimal path in a graph, using the Dijkstra algorithm.

Parameters

distance	An object having operator()(unsigned int i, unsigned int j) which returns distance between two nodes (i,j).
nb_nodes	Number of graph nodes.
starting_node	Index of the starting node.
ending_node	Index of the ending node (set to ~0U to ignore ending node).
previous_node	Array that gives the previous node index in the path to the starting node (optional parameter).

Returns

Array of distances of each node to the starting node.

dijkstra() [2/2]

CImg<T>& dijkstra	(	const unsigned int	starting_node,
		const unsigned int	ending_node,
		CImg< t > &	previous_node
	)

Return minimal path in a graph, using the Dijkstra algorithm.

Parameters

starting_node	Index of the starting node.
ending_node	Index of the ending node.
previous_node	Array that gives the previous node index in the path to the starting node (optional parameter).

Returns

Array of distances of each node to the starting node.

Note

image instance corresponds to the adjacency matrix of the graph.

string()

static CImg<T> string ( const char *const  str, const bool  is_last_zero = true, const bool  is_shared = false  )

static

Return an image containing the character codes of specified string.

Parameters

str	input C-string to encode as an image.
is_last_zero	Tells if the ending '0' character appear in the resulting image.
is_shared	Return result that shares its buffer with str.

row_vector() [1/4]

static CImg<T> row_vector ( const T &  a0 )

static

Return a 1x1 image containing specified value.

Parameters

a0	First vector value.

row_vector() [2/4]

static CImg<T> row_vector ( const T &  a0, const T &  a1  )

static

Return a 2x1 image containing specified values.

Parameters

a0	First vector value.
a1	Second vector value.

row_vector() [3/4]

static CImg<T> row_vector ( const T &  a0, const T &  a1, const T &  a2  )

static

Return a 3x1 image containing specified values.

Parameters

a0	First vector value.
a1	Second vector value.
a2	Third vector value.

row_vector() [4/4]

static CImg<T> row_vector ( const T &  a0, const T &  a1, const T &  a2, const T &  a3  )

static

Return a 4x1 image containing specified values.

Parameters

a0	First vector value.
a1	Second vector value.
a2	Third vector value.
a3	Fourth vector value.

vector() [1/4]

static CImg<T> vector ( const T &  a0 )

static

Return a 1x1 image containing specified value.

Parameters

a0	First vector value.

vector() [2/4]

static CImg<T> vector ( const T &  a0, const T &  a1  )

static

Return a 1x2 image containing specified values.

Parameters

a0	First vector value.
a1	Second vector value.

vector() [3/4]

static CImg<T> vector ( const T &  a0, const T &  a1, const T &  a2  )

static

Return a 1x3 image containing specified values.

Parameters

a0	First vector value.
a1	Second vector value.
a2	Third vector value.

vector() [4/4]

static CImg<T> vector ( const T &  a0, const T &  a1, const T &  a2, const T &  a3  )

static

Return a 1x4 image containing specified values.

Parameters

a0	First vector value.
a1	Second vector value.
a2	Third vector value.
a3	Fourth vector value.

matrix() [1/3]

static CImg<T> matrix ( const T &  a0 )

static

Return a 1x1 matrix containing specified coefficients.

Parameters

a0	First matrix value.

Note

Equivalent to vector(const T&).

matrix() [2/3]

static CImg<T> matrix ( const T &  a0, const T &  a1, const T &  a2, const T &  a3  )

static

Return a 2x2 matrix containing specified coefficients.

Parameters

a0	First matrix value.
a1	Second matrix value.
a2	Third matrix value.
a3	Fourth matrix value.

matrix() [3/3]

static CImg<T> matrix ( const T &  a0, const T &  a1, const T &  a2, const T &  a3, const T &  a4, const T &  a5, const T &  a6, const T &  a7, const T &  a8  )

static

Return a 3x3 matrix containing specified coefficients.

Parameters

a0	First matrix value.
a1	Second matrix value.
a2	Third matrix value.
a3	Fourth matrix value.
a4	Fifth matrix value.
a5	Sixth matrix value.
a6	Seventh matrix value.
a7	Eighth matrix value.
a8	Ninth matrix value.

tensor()

static CImg<T> tensor ( const T &  a0 )

static

Return a 1x1 symmetric matrix containing specified coefficients.

Parameters

a0	First matrix value.

Note

Equivalent to vector(const T&).

identity_matrix() [2/2]

static CImg<T> identity_matrix ( const unsigned int  N )

static

Return a NxN identity matrix.

Parameters

N	Dimension of the matrix.

sequence() [2/2]

static CImg<T> sequence ( const unsigned int  N, const T &  a0, const T &  a1  )

static

Return a N-numbered sequence vector from a0 to a1.

Parameters

N	Size of the resulting vector.
a0	Starting value of the sequence.
a1	Ending value of the sequence.

rotation_matrix()

static CImg<T> rotation_matrix ( const float  x, const float  y, const float  z, const float  w, const bool  is_quaternion = false  )

static

Return a 3x3 rotation matrix from an { axis + angle } or a quaternion.

Parameters

x	X-coordinate of the rotation axis, or first quaternion coordinate.
y	Y-coordinate of the rotation axis, or second quaternion coordinate.
z	Z-coordinate of the rotation axis, or third quaternion coordinate.
w	Angle of the rotation axis (in degree), or fourth quaternion coordinate.
is_quaternion	Tell is the four arguments denotes a set { axis + angle } or a quaternion (x,y,z,w).

fill() [1/4]

CImg<T>& fill

(

const T &

val

)

Fill all pixel values with specified value.

Parameters

val	Fill value.

fill() [2/4]

CImg<T>& fill	(	const T &	val0,
		const T &	val1
	)

Fill sequentially all pixel values with specified values.

Parameters

val0	First fill value.
val1	Second fill value.

fill() [3/4]

CImg<T>& fill	(	const char *const	expression,
		const bool	repeat_values,
		const bool	allow_formula = true,
		CImgList< T > *const	list_images = 0
	)

Fill sequentially pixel values according to a given expression.

Parameters

expression	C-string describing a math formula, or a sequence of values.
repeat_values	In case a list of values is provided, tells if this list must be repeated for the filling.
allow_formula	Tells that mathematical formulas are authorized for the filling.
list_images	In case of a mathematical expression, attach a list of images to the specified expression.

fill_from_values()

CImg<T>& fill_from_values	(	const char *const	values,
		const bool	repeat_values
	)

Fill sequentially pixel values according to a value sequence, given as a string.

Parameters

values	C-string describing a sequence of values.
repeat_values	Tells if this sequence must be repeated when filling.

fill() [4/4]

CImg<T>& fill	(	const CImg< t > &	values,
		const bool	repeat_values = true
	)

Fill sequentially pixel values according to the values found in another image.

Parameters

values	Image containing the values used for the filling.
repeat_values	In case there are less values than necessary in values, tells if these values must be repeated for the filling.

fillX()

CImg<T>& fillX	(	const unsigned int	y,
		const unsigned int	z,
		const unsigned int	c,
		const int	a0,
			...
	)

Fill pixel values along the X-axis at a specified pixel position.

Parameters

y	Y-coordinate of the filled column.
z	Z-coordinate of the filled column.
c	C-coordinate of the filled column.
a0	First fill value.

fillY()

CImg<T>& fillY	(	const unsigned int	x,
		const unsigned int	z,
		const unsigned int	c,
		const int	a0,
			...
	)

Fill pixel values along the Y-axis at a specified pixel position.

Parameters

x	X-coordinate of the filled row.
z	Z-coordinate of the filled row.
c	C-coordinate of the filled row.
a0	First fill value.

fillZ()

CImg<T>& fillZ	(	const unsigned int	x,
		const unsigned int	y,
		const unsigned int	c,
		const int	a0,
			...
	)

Fill pixel values along the Z-axis at a specified pixel position.

Parameters

x	X-coordinate of the filled slice.
y	Y-coordinate of the filled slice.
c	C-coordinate of the filled slice.
a0	First fill value.

fillC()

CImg<T>& fillC	(	const unsigned int	x,
		const unsigned int	y,
		const unsigned int	z,
		const int	a0,
			...
	)

Fill pixel values along the C-axis at a specified pixel position.

Parameters

x	X-coordinate of the filled channel.
y	Y-coordinate of the filled channel.
z	Z-coordinate of the filled channel.
a0	First filling value.

discard()

CImg<T>& discard	(	const CImg< t > &	values,
		const char	axis = 0
	)

Discard specified sequence of values in the image buffer, along a specific axis.

Parameters

values	Sequence of values to discard.
axis	Axis along which the values are discarded. If set to 0 (default value) the method does it for all the buffer values and returns a one-column vector.

Note

Discarded values will change the image geometry, so the resulting image is returned as a one-column vector.

rand()

CImg<T>& rand	(	const T &	val_min,
		const T &	val_max
	)

Fill image with random values in specified range.

Parameters

val_min	Minimal authorized random value.
val_max	Maximal authorized random value.

Note

Random variables are uniformly distributed in [val_min,val_max].

round()

CImg<T>& round	(	const double	y = 1,
		const int	rounding_type = 0
	)

Round pixel values.

Parameters

y	Rounding precision.
rounding_type	Rounding type. Can be: -1: Backward. 0: Nearest. 1: Forward.

noise()

CImg<T>& noise	(	const double	sigma,
		const unsigned int	noise_type = 0
	)

Add random noise to pixel values.

Parameters

sigma	Amplitude of the random additive noise. If sigma<0, it stands for a percentage of the global value range.
noise_type	Type of additive noise (can be 0=gaussian, 1=uniform, 2=Salt and Pepper, 3=Poisson or 4=Rician).

Returns

A reference to the modified image instance.

Note

• For Poisson noise (noise_type=3), parameter sigma is ignored, as Poisson noise only depends on the image value itself.
• Function CImg<T>::get_noise() is also defined. It returns a non-shared modified copy of the image instance.

Example

const CImg<float> img("reference.jpg"), res = img.get_noise(40);
(img,res.normalize(0,255)).display();

normalize() [1/2]

CImg<T>& normalize	(	const T &	min_value,
		const T &	max_value,
		const float	constant_case_ratio = 0
	)

Linearly normalize pixel values.

Parameters

min_value	Minimum desired value of the resulting image.
max_value	Maximum desired value of the resulting image.
constant_case_ratio	In case of instance image having a constant value, tell what ratio of [min_value,max_value] is used to fill the normalized image (=0 for min_value, =1 for max_value, =0.5 for (min_value + max_value)/2).

Example

const CImg<float> img("reference.jpg"), res = img.get_normalize(160,220);
(img,res).display();

normalize() [2/2]

CImg<T>& normalize

(

)

Normalize multi-valued pixels of the image instance, with respect to their L2-norm.

Example

const CImg<float> img("reference.jpg"), res = img.get_normalize();
(img,res.normalize(0,255)).display();

norm()

CImg<T>& norm

(

const int

norm_type = 2

)

Compute Lp-norm of each multi-valued pixel of the image instance.

Parameters

norm_type

Type of computed vector norm (can be -1=Linf, or greater or equal than 0).

Example

const CImg<float> img("reference.jpg"), res = img.get_norm();
(img,res.normalize(0,255)).display();

cut()

CImg<T>& cut	(	const T &	min_value,
		const T &	max_value
	)

Cut pixel values in specified range.

Parameters

min_value	Minimum desired value of the resulting image.
max_value	Maximum desired value of the resulting image.

Example

const CImg<float> img("reference.jpg"), res = img.get_cut(160,220);
(img,res).display();

quantize()

CImg<T>& quantize	(	const unsigned int	nb_levels,
		const bool	keep_range = true
	)

Uniformly quantize pixel values.

Parameters

nb_levels	Number of quantization levels.
keep_range	Tells if resulting values keep the same range as the original ones.

Example

const CImg<float> img("reference.jpg"), res = img.get_quantize(4);
(img,res).display();

otsu()

T otsu

(

const unsigned int

nb_levels = 256

)

const

Return the Otsu threshold.

Parameters

nb_levels

Number of histogram levels used for the estimation.

threshold()

CImg<T>& threshold	(	const T &	value,
		const bool	soft_threshold = false,
		const bool	strict_threshold = false
	)

Threshold pixel values.

Parameters

value	Threshold value
soft_threshold	Tells if soft thresholding must be applied (instead of hard one).
strict_threshold	Tells if threshold value is strict.

Example

const CImg<float> img("reference.jpg"), res = img.get_threshold(128);
(img,res.normalize(0,255)).display();

histogram()

CImg<T>& histogram	(	const unsigned int	nb_levels,
		const T &	min_value,
		const T &	max_value
	)

Compute the histogram of pixel values.

Parameters

nb_levels	Number of desired histogram levels.
min_value	Minimum pixel value considered for the histogram computation. All pixel values lower than min_value will not be counted.
max_value	Maximum pixel value considered for the histogram computation. All pixel values higher than max_value will not be counted.

Note

• The histogram H of an image I is the 1D function where H(x) counts the number of occurrences of the value x in the image I.
• The resulting histogram is always defined in 1D. Histograms of multi-valued images are not multi-dimensional.

Example

const CImg<float> img = CImg<float>("reference.jpg").histogram(256);
img.display_graph(0,3);

equalize()

CImg<T>& equalize	(	const unsigned int	nb_levels,
		const T &	min_value,
		const T &	max_value
	)

Equalize histogram of pixel values.

Parameters

nb_levels	Number of histogram levels used for the equalization.
min_value	Minimum pixel value considered for the histogram computation. All pixel values lower than min_value will not be counted.
max_value	Maximum pixel value considered for the histogram computation. All pixel values higher than max_value will not be counted.

Example

const CImg<float> img("reference.jpg"), res = img.get_equalize(256);
(img,res).display();

index()

CImg<T>& index	(	const CImg< t > &	colormap,
		const float	dithering = 1,
		const bool	map_indexes = false
	)

Index multi-valued pixels regarding to a specified palette.

Parameters

colormap	Multi-valued colormap used as the basis for multi-valued pixel indexing.
dithering	Level of dithering (0=disable, 1=standard level).
map_indexes	Tell if the values of the resulting image are the colormap indices or the colormap vectors.

Note

• img.index(colormap,dithering,1) is equivalent to img.index(colormap,dithering,0).map(colormap).

Example

const CImg<float> img("reference.jpg"), colormap(3,1,1,3, 0,128,255, 0,128,255, 0,128,255);
const CImg<float> res = img.get_index(colormap,1,true);
(img,res).display();

map()

CImg<T>& map	(	const CImg< t > &	palette,
		const unsigned int	boundary_conditions = 0
	)

Map predefined palette on the scalar (indexed) image instance.

Parameters

palette	Multi-valued palette used for mapping the indexes.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.

Example

const CImg<float> img("reference.jpg"),
                  palette1(3,1,1,3, 0,128,255, 0,128,255, 0,128,255),
                  palette2(3,1,1,3, 255,0,0, 0,255,0, 0,0,255),
                  res = img.get_index(palette1,0).map(palette2);
(img,res).display();

label() [1/2]

CImg<T>& label	(	const bool	is_high_connectivity = false,
		const Tfloat	tolerance = 0,
		const bool	is_L2_norm = true
	)

Label connected components.

Parameters

is_high_connectivity	Boolean that choose between 4(false)- or 8(true)-connectivity in 2D case, and between 6(false)- or 26(true)-connectivity in 3D case.
tolerance	Tolerance used to determine if two neighboring pixels belong to the same region.
is_L2_norm	If true, tolerance is compared against L2 difference, otherwise L1 is used.

Note

The algorithm of connected components computation has been primarily done by A. Meijster, according to the publication: 'W.H. Hesselink, A. Meijster, C. Bron, "Concurrent Determination of Connected Components.", In: Science of Computer Programming 41 (2001), pp. 173–194'. The submitted code has then been modified to fit CImg coding style and constraints.

label() [2/2]

CImg<T>& label	(	const CImg< t > &	connectivity_mask,
		const Tfloat	tolerance = 0,
		const bool	is_L2_norm = true
	)

Label connected components [overloading].

Parameters

connectivity_mask	Mask of the neighboring pixels.
tolerance	Tolerance used to determine if two neighboring pixels belong to the same region.
is_L2_norm	If true, tolerance is compared against L2 difference, otherwise L1 is used.

default_LUT256()

static const CImg<Tuchar>& default_LUT256 ( )

static

Return palette "default", containing 256 colors entries in RGB.

Returns

The following 256x1x1x3 palette is returned:

HSV_LUT256()

static const CImg<Tuchar>& HSV_LUT256 ( )

static

Return palette "HSV", containing 256 colors entries in RGB.

Returns

The following 256x1x1x3 palette is returned:

lines_LUT256()

static const CImg<Tuchar>& lines_LUT256 ( )

static

Return palette "lines", containing 256 colors entries in RGB.

Returns

The following 256x1x1x3 palette is returned:

hot_LUT256()

static const CImg<Tuchar>& hot_LUT256 ( )

static

Return palette "hot", containing 256 colors entries in RGB.

Returns

The following 256x1x1x3 palette is returned:

cool_LUT256()

static const CImg<Tuchar>& cool_LUT256 ( )

static

Return palette "cool", containing 256 colors entries in RGB.

Returns

The following 256x1x1x3 palette is returned:

jet_LUT256()

static const CImg<Tuchar>& jet_LUT256 ( )

static

Return palette "jet", containing 256 colors entries in RGB.

Returns

The following 256x1x1x3 palette is returned:

flag_LUT256()

static const CImg<Tuchar>& flag_LUT256 ( )

static

Return palette "flag", containing 256 colors entries in RGB.

Returns

The following 256x1x1x3 colormap is returned:

cube_LUT256()

static const CImg<Tuchar>& cube_LUT256 ( )

static

Return palette "cube", containing 256 colors entries in RGB.

Returns

The following 256x1x1x3 palette is returned:

RGBtoXYZ()

CImg<T>& RGBtoXYZ

(

const bool

use_D65 = true

)

Convert pixel values from RGB to XYZ color spaces.

Parameters

use_D65

Tell to use the D65 illuminant (D50 otherwise).

XYZtoRGB()

CImg<T>& XYZtoRGB

(

const bool

use_D65 = true

)

Convert pixel values from XYZ to RGB color spaces.

Parameters

use_D65

Tell to use the D65 illuminant (D50 otherwise).

resize() [1/3]

CImg<T>& resize	(	const int	size_x,
		const int	size_y = -100,
		const int	size_z = -100,
		const int	size_c = -100,
		const int	interpolation_type = 1,
		const unsigned int	boundary_conditions = 0,
		const float	centering_x = 0,
		const float	centering_y = 0,
		const float	centering_z = 0,
		const float	centering_c = 0
	)

Resize image to new dimensions.

Parameters

size_x	Number of columns (new size along the X-axis).
size_y	Number of rows (new size along the Y-axis).
size_z	Number of slices (new size along the Z-axis).
size_c	Number of vector-channels (new size along the C-axis).
interpolation_type	Method of interpolation: -1 = no interpolation: raw memory resizing. 0 = no interpolation: additional space is filled according to boundary_conditions. 1 = nearest-neighbor interpolation. 2 = moving average interpolation. 3 = linear interpolation. 4 = grid interpolation. 5 = cubic interpolation. 6 = lanczos interpolation.
boundary_conditions	Type of boundary conditions used if necessary.
centering_x	Set centering type (only if interpolation_type=0).
centering_y	Set centering type (only if interpolation_type=0).
centering_z	Set centering type (only if interpolation_type=0).
centering_c	Set centering type (only if interpolation_type=0).

Note

If pd[x,y,z,v]<0, it corresponds to a percentage of the original size (the default value is -100).

resize() [2/3]

CImg<T>& resize	(	const CImg< t > &	src,
		const int	interpolation_type = 1,
		const unsigned int	boundary_conditions = 0,
		const float	centering_x = 0,
		const float	centering_y = 0,
		const float	centering_z = 0,
		const float	centering_c = 0
	)

Resize image to dimensions of another image.

Parameters

src	Reference image used for dimensions.
interpolation_type	Interpolation method.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.
centering_x	Set centering type (only if interpolation_type=0).
centering_y	Set centering type (only if interpolation_type=0).
centering_z	Set centering type (only if interpolation_type=0).
centering_c	Set centering type (only if interpolation_type=0).

resize() [3/3]

CImg<T>& resize	(	const CImgDisplay &	disp,
		const int	interpolation_type = 1,
		const unsigned int	boundary_conditions = 0,
		const float	centering_x = 0,
		const float	centering_y = 0,
		const float	centering_z = 0,
		const float	centering_c = 0
	)

Resize image to dimensions of a display window.

Parameters

disp	Reference display window used for dimensions.
interpolation_type	Interpolation method.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.
centering_x	Set centering type (only if interpolation_type=0).
centering_y	Set centering type (only if interpolation_type=0).
centering_z	Set centering type (only if interpolation_type=0).
centering_c	Set centering type (only if interpolation_type=0).

resize_doubleXY()

CImg<T>& resize_doubleXY

(

)

Resize image to double-size, using the Scale2X algorithm.

Note

Use anisotropic upscaling algorithm described here.

resize_tripleXY()

CImg<T>& resize_tripleXY

(

)

Resize image to triple-size, using the Scale3X algorithm.

Note

Use anisotropic upscaling algorithm described here.

mirror() [1/2]

CImg<T>& mirror

(

const char

axis

)

Mirror image content along specified axis.

Parameters

axis	Mirror axis

mirror() [2/2]

CImg<T>& mirror

(

const char *const

axes

)

Mirror image content along specified axes.

Parameters

axes	Mirror axes, as a C-string.

Note

axes may contains multiple characters, e.g. "xyz"

shift()

CImg<T>& shift	(	const int	delta_x,
		const int	delta_y = 0,
		const int	delta_z = 0,
		const int	delta_c = 0,
		const unsigned int	boundary_conditions = 0
	)

Shift image content.

Parameters

delta_x	Amount of displacement along the X-axis.
delta_y	Amount of displacement along the Y-axis.
delta_z	Amount of displacement along the Z-axis.
delta_c	Amount of displacement along the C-axis.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.

permute_axes()

CImg<T>& permute_axes

(

const char *const

axes_order

)

Permute axes order.

Parameters

axes_order

Axes permutations, as a C-string of 4 characters. This function permutes image content regarding the specified axes permutation.

unroll()

CImg<T>& unroll

(

const char

axis

)

Unroll pixel values along specified axis.

Parameters

axis	Unroll axis (can be 'x', 'y', 'z' or c 'c').

rotate() [1/4]

CImg<T>& rotate	(	const float	angle,
		const unsigned int	interpolation = 1,
		const unsigned int	boundary_conditions = 0
	)

Rotate image with arbitrary angle.

Parameters

angle	Rotation angle, in degrees.
interpolation	Type of interpolation. Can be { 0=nearest | 1=linear | 2=cubic }.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.

Note

The size of the image is modified.

rotate() [2/4]

CImg<T>& rotate	(	const float	angle,
		const float	cx,
		const float	cy,
		const unsigned int	interpolation,
		const unsigned int	boundary_conditions = 0
	)

Rotate image with arbitrary angle, around a center point.

Parameters

angle	Rotation angle, in degrees.
cx	X-coordinate of the rotation center.
cy	Y-coordinate of the rotation center.
interpolation	Type of interpolation, { 0=nearest | 1=linear | 2=cubic | 3=mirror }.
boundary_conditions	Boundary conditions, { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.

rotate() [3/4]

CImg<T> rotate	(	const float	u,
		const float	v,
		const float	w,
		const float	angle,
		const unsigned int	interpolation,
		const unsigned int	boundary_conditions
	)

Rotate volumetric image with arbitrary angle and axis.

Parameters

u	X-coordinate of the 3D rotation axis.
v	Y-coordinate of the 3D rotation axis.
w	Z-coordinate of the 3D rotation axis.
angle	Rotation angle, in degrees.
interpolation	Type of interpolation. Can be { 0=nearest | 1=linear | 2=cubic }.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.

Note

Most of the time, size of the image is modified.

rotate() [4/4]

CImg<T> rotate	(	const float	u,
		const float	v,
		const float	w,
		const float	angle,
		const float	cx,
		const float	cy,
		const float	cz,
		const unsigned int	interpolation = 1,
		const unsigned int	boundary_conditions = 0
	)

Rotate volumetric image with arbitrary angle and axis, around a center point.

Parameters

u	X-coordinate of the 3D rotation axis.
v	Y-coordinate of the 3D rotation axis.
w	Z-coordinate of the 3D rotation axis.
angle	Rotation angle, in degrees.
cx	X-coordinate of the rotation center.
cy	Y-coordinate of the rotation center.
cz	Z-coordinate of the rotation center.
interpolation	Type of interpolation. Can be { 0=nearest | 1=linear | 2=cubic | 3=mirror }.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic }.

Note

Most of the time, size of the image is modified.

warp()

CImg<T>& warp	(	const CImg< t > &	p_warp,
		const unsigned int	mode = 0,
		const unsigned int	interpolation = 1,
		const unsigned int	boundary_conditions = 0
	)

Warp image content by a warping field.

Parameters

warp	Warping field.
mode	Can be { 0=backward-absolute | 1=backward-relative | 2=forward-absolute | 3=foward-relative }
interpolation	Can be { 0=nearest | 1=linear | 2=cubic }.
boundary_conditions	Boundary conditions { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.

get_projections2d()

CImg<T> get_projections2d	(	const unsigned int	x0,
		const unsigned int	y0,
		const unsigned int	z0
	)		const

Generate a 2D representation of a 3D image, with XY,XZ and YZ views.

Parameters

x0	X-coordinate of the projection point.
y0	Y-coordinate of the projection point.
z0	Z-coordinate of the projection point.

crop()

CImg<T>& crop	(	const int	x0,
		const int	y0,
		const int	z0,
		const int	c0,
		const int	x1,
		const int	y1,
		const int	z1,
		const int	c1,
		const unsigned int	boundary_conditions = 0
	)

Crop image region.

Parameters

x0	= X-coordinate of the upper-left crop rectangle corner.
y0	= Y-coordinate of the upper-left crop rectangle corner.
z0	= Z-coordinate of the upper-left crop rectangle corner.
c0	= C-coordinate of the upper-left crop rectangle corner.
x1	= X-coordinate of the lower-right crop rectangle corner.
y1	= Y-coordinate of the lower-right crop rectangle corner.
z1	= Z-coordinate of the lower-right crop rectangle corner.
c1	= C-coordinate of the lower-right crop rectangle corner.
boundary_conditions	= Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.

autocrop()

CImg<T>& autocrop	(	const T *const	color = 0,
		const char *const	axes = "zyx"
	)

Autocrop image region, regarding the specified background color.

Parameters

color	Color used for the crop. If 0, color is guessed.
axes	Axes used for the crop.

get_column()

CImg<T> get_column

(

const int

x0

)

const

Return specified image column.

Parameters

x0	Image column.

columns()

CImg<T>& columns	(	const int	x0,
		const int	x1
	)

Return specified range of image columns.

Parameters

x0	Starting image column.
x1	Ending image column.

row()

CImg<T>& row

(

const int

y0

)

Return specified image row [in-place version].

Parameters

y0	Image row.

get_rows()

CImg<T> get_rows	(	const int	y0,
		const int	y1
	)		const

Return specified range of image rows.

Parameters

y0	Starting image row.
y1	Ending image row.

get_slice()

CImg<T> get_slice

(

const int

z0

)

const

Return specified image slice.

Parameters

z0	Image slice.

get_slices()

CImg<T> get_slices	(	const int	z0,
		const int	z1
	)		const

Return specified range of image slices.

Parameters

z0	Starting image slice.
z1	Ending image slice.

get_channel()

CImg<T> get_channel

(

const int

c0

)

const

Return specified image channel.

Parameters

c0	Image channel.

get_channels()

CImg<T> get_channels	(	const int	c0,
		const int	c1
	)		const

Return specified range of image channels.

Parameters

c0	Starting image channel.
c1	Ending image channel.

streamline()

static CImg<floatT> streamline ( const tfunc &  func, const float  x, const float  y, const float  z, const float  L = 256, const float  dl = 0.1f, const unsigned int  interpolation_type = 2, const bool  is_backward_tracking = false, const bool  is_oriented_only = false, const float  x0 = 0, const float  y0 = 0, const float  z0 = 0, const float  x1 = 0, const float  y1 = 0, const float  z1 = 0  )

static

Return stream line of a 3D vector field.

Parameters

func	Vector field function.
x	X-coordinate of the starting point of the streamline.
y	Y-coordinate of the starting point of the streamline.
z	Z-coordinate of the starting point of the streamline.
L	Streamline length.
dl	Streamline length increment.
interpolation_type	Type of interpolation. Can be { 0=nearest int | 1=linear | 2=2nd-order RK | 3=4th-order RK. }.
is_backward_tracking	Tells if the streamline is estimated forward or backward.
is_oriented_only	Tells if the direction of the vectors must be ignored.
x0	X-coordinate of the first bounding-box vertex.
y0	Y-coordinate of the first bounding-box vertex.
z0	Z-coordinate of the first bounding-box vertex.
x1	X-coordinate of the second bounding-box vertex.
y1	Y-coordinate of the second bounding-box vertex.
z1	Z-coordinate of the second bounding-box vertex.

get_shared_points()

CImg<T> get_shared_points	(	const unsigned int	x0,
		const unsigned int	x1,
		const unsigned int	y0 = 0,
		const unsigned int	z0 = 0,
		const unsigned int	c0 = 0
	)

Return a shared-memory image referencing a range of pixels of the image instance.

Parameters

x0	X-coordinate of the starting pixel.
x1	X-coordinate of the ending pixel.
y0	Y-coordinate.
z0	Z-coordinate.
c0	C-coordinate.

get_shared_rows()

CImg<T> get_shared_rows	(	const unsigned int	y0,
		const unsigned int	y1,
		const unsigned int	z0 = 0,
		const unsigned int	c0 = 0
	)

Return a shared-memory image referencing a range of rows of the image instance.

Parameters

y0	Y-coordinate of the starting row.
y1	Y-coordinate of the ending row.
z0	Z-coordinate.
c0	C-coordinate.

get_shared_row()

CImg<T> get_shared_row	(	const unsigned int	y0,
		const unsigned int	z0 = 0,
		const unsigned int	c0 = 0
	)

Return a shared-memory image referencing one row of the image instance.

Parameters

y0	Y-coordinate.
z0	Z-coordinate.
c0	C-coordinate.

get_shared_slices()

CImg<T> get_shared_slices	(	const unsigned int	z0,
		const unsigned int	z1,
		const unsigned int	c0 = 0
	)

Return a shared memory image referencing a range of slices of the image instance.

Parameters

z0	Z-coordinate of the starting slice.
z1	Z-coordinate of the ending slice.
c0	C-coordinate.

get_shared_slice()

CImg<T> get_shared_slice	(	const unsigned int	z0,
		const unsigned int	c0 = 0
	)

Return a shared-memory image referencing one slice of the image instance.

Parameters

z0	Z-coordinate.
c0	C-coordinate.

get_shared_channels()

CImg<T> get_shared_channels	(	const unsigned int	c0,
		const unsigned int	c1
	)

Return a shared-memory image referencing a range of channels of the image instance.

Parameters

c0	C-coordinate of the starting channel.
c1	C-coordinate of the ending channel.

get_shared_channel()

CImg<T> get_shared_channel

(

const unsigned int

c0

)

Return a shared-memory image referencing one channel of the image instance.

Parameters

c0	C-coordinate.

get_split() [1/2]

CImgList<T> get_split	(	const char	axis,
		const int	nb = -1
	)		const

Split image into a list along specified axis.

Parameters

axis	Splitting axis. Can be { 'x' | 'y' | 'z' | 'c' }.
nb	Number of split parts.

Note

• If nb==0, instance image is split into blocs of equal values along the specified axis.
• If nb<=0, instance image is split into blocs of -nb pixel wide.
• If nb>0, instance image is split into nb blocs.

get_split() [2/2]

CImgList<T> get_split	(	const CImg< t > &	values,
		const char	axis = 0,
		const bool	keep_values = true
	)		const

Split image into a list of sub-images, according to a specified splitting value sequence and optionally axis.

Parameters

values	Splitting value sequence.
axis	Axis along which the splitting is performed. Can be '0' to ignore axis.
keep_values	Tells if the splitting sequence must be kept in the split blocs.

append()

CImg<T>& append	(	const CImg< t > &	img,
		const char	axis = 'x',
		const float	align = 0
	)

Append two images along specified axis.

Parameters

img	Image to append with instance image.
axis	Appending axis. Can be { 'x' | 'y' | 'z' | 'c' }.
align	Append alignment in [0,1].

correlate()

CImg<T>& correlate	(	const CImg< t > &	kernel,
		const unsigned int	boundary_conditions = 1,
		const bool	is_normalized = false,
		const unsigned int	channel_mode = 1,
		const int	xcenter = (int)(~0U>>1),
		const int	ycenter = (int)(~0U>>1),
		const int	zcenter = (int)(~0U>>1),
		const int	xstart = 0,
		const int	ystart = 0,
		const int	zstart = 0,
		const int	xend = (int)(~0U>>1),
		const int	yend = (int)(~0U>>1),
		const int	zend = (int)(~0U>>1),
		const float	xstride = 1,
		const float	ystride = 1,
		const float	zstride = 1,
		const float	xdilation = 1,
		const float	ydilation = 1,
		const float	zdilation = 1,
		const bool	interpolation_type = false
	)

Correlate image by a kernel.

Parameters

kernel	= the correlation kernel.
boundary_conditions	Boundary condition. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.
is_normalized	= enable local normalization.
channel_mode	Channel processing mode. Can be { 0=all | 1=one for one (default) | 2=partial sum | 3=full sum }.
xcenter	X-coordinate of the kernel center (~0U>>1 means 'centered').
ycenter	Y-coordinate of the kernel center (~0U>>1 means 'centered').
zcenter	Z-coordinate of the kernel center (~0U>>1 means 'centered').
xstart	Starting X-coordinate of the instance image.
ystart	Starting Y-coordinate of the instance image.
zstart	Starting Z-coordinate of the instance image.
xend	Ending X-coordinate of the instance image.
yend	Ending Y-coordinate of the instance image.
zend	Ending Z-coordinate of the instance image.
xstride	Stride along the X-axis.
ystride	Stride along the Y-axis.
zstride	Stride along the Z-axis.
xdilation	Dilation along the X-axis.
ydilation	Dilation along the Y-axis.
zdilation	Dilation along the Z-axis.
interpolation_type	Can be { false=nearest | true=linear }.

Note

• The correlation of the image instance *this by the kernel kernel is defined to be: res(x,y,z) = sum_{i,j,k} (*this)(\alpha_x\;x + \beta_x\;(i - c_x),\alpha_y\;y + \beta_y\;(j - c_y),\alpha_z\;z + \beta_z\;(k - c_z))*kernel(i,j,k).

convolve()

CImg<T>& convolve	(	const CImg< t > &	kernel,
		const unsigned int	boundary_conditions = 1,
		const bool	is_normalized = false,
		const unsigned int	channel_mode = 1,
		const int	xcenter = (int)(~0U>>1),
		const int	ycenter = (int)(~0U>>1),
		const int	zcenter = (int)(~0U>>1),
		const int	xstart = 0,
		const int	ystart = 0,
		const int	zstart = 0,
		const int	xend = (int)(~0U>>1),
		const int	yend = (int)(~0U>>1),
		const int	zend = (int)(~0U>>1),
		const float	xstride = 1,
		const float	ystride = 1,
		const float	zstride = 1,
		const float	xdilation = 1,
		const float	ydilation = 1,
		const float	zdilation = 1,
		const bool	interpolation_type = false
	)

Convolve image by a kernel.

Parameters

kernel	= the correlation kernel.
boundary_conditions	Boundary condition. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.
is_normalized	= enable local normalization.
channel_mode	Channel processing mode. Can be { 0=all | 1=one for one (default) | 2=partial sum | 3=full sum }.
xcenter	X-coordinate of the kernel center (~0U means 'centered').
ycenter	Y-coordinate of the kernel center (~0U means 'centered').
zcenter	Z-coordinate of the kernel center (~0U means 'centered').
xstart	Starting X-coordinate of the instance image.
ystart	Starting Y-coordinate of the instance image.
zstart	Starting Z-coordinate of the instance image.
xend	Ending X-coordinate of the instance image.
yend	Ending Y-coordinate of the instance image.
zend	Ending Z-coordinate of the instance image.
xstride	Stride along the X-axis.
ystride	Stride along the Y-axis.
zstride	Stride along the Z-axis.
xdilation	Dilation along the X-axis.
ydilation	Dilation along the Y-axis.
zdilation	Dilation along the Z-axis.
interpolation_type	Can be { false=nearest | true=linear }.

Note

• The convolution of the image instance *this by the kernel kernel is defined to be: res(x,y,z) = sum_{i,j,k} (*this)(\alpha_x\;x - \beta_x\;(i - c_x),\alpha_y\;y
  • \beta_y\;(j - c_y),\alpha_z\;z - \beta_z\;(k - c_z))*kernel(i,j,k).

cumulate() [1/2]

CImg<T>& cumulate

(

const char

axis = 0

)

Cumulate image values, optionally along specified axis.

Parameters

axis	Cumulation axis. Set it to 0 to cumulate all values globally without taking axes into account.

cumulate() [2/2]

CImg<T>& cumulate

(

const char *const

axes

)

Cumulate image values, along specified axes.

Parameters

axes	Cumulation axes, as a C-string.

Note

axes may contains multiple characters, e.g. "xyz"

erode() [1/3]

CImg<T>& erode	(	const CImg< t > &	kernel,
		const unsigned int	boundary_conditions = 1,
		const bool	is_real = false
	)

Erode image by a structuring element.

Parameters

kernel	Structuring element.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.
is_real	Do the erosion in real (a.k.a 'non-flat') mode (true) rather than binary mode (false).

erode() [2/3]

CImg<T>& erode	(	const unsigned int	sx,
		const unsigned int	sy,
		const unsigned int	sz = 1
	)

Erode image by a rectangular structuring element of specified size.

Parameters

sx	Width of the structuring element.
sy	Height of the structuring element.
sz	Depth of the structuring element.

erode() [3/3]

CImg<T>& erode

(

const unsigned int

s

)

Erode the image by a square structuring element of specified size.

Parameters

s	Size of the structuring element.

dilate() [1/3]

CImg<T>& dilate	(	const CImg< t > &	kernel,
		const unsigned int	boundary_conditions = 1,
		const bool	is_real = false
	)

Dilate image by a structuring element.

Parameters

kernel	Structuring element.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.
is_real	Do the dilation in real (a.k.a 'non-flat') mode (true) rather than binary mode (false).

dilate() [2/3]

CImg<T>& dilate	(	const unsigned int	sx,
		const unsigned int	sy,
		const unsigned int	sz = 1
	)

Dilate image by a rectangular structuring element of specified size.

Parameters

sx	Width of the structuring element.
sy	Height of the structuring element.
sz	Depth of the structuring element.

dilate() [3/3]

CImg<T>& dilate

(

const unsigned int

s

)

Dilate image by a square structuring element of specified size.

Parameters

s	Size of the structuring element.

closing() [1/2]

CImg<T>& closing	(	const CImg< t > &	kernel,
		const unsigned int	boundary_conditions = 1,
		const bool	is_real = false
	)

Apply morphological closing by a structuring element.

Parameters

kernel	Structuring element.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.
is_real	Do the closing in real (a.k.a 'non-flat') mode (true) rather than binary mode (false).

closing() [2/2]

CImg<T>& closing

(

const unsigned int

s

)

Apply morphological closing by a square structuring element of specified size.

Parameters

s	Size of the structuring element.

opening() [1/2]

CImg<T>& opening	(	const CImg< t > &	kernel,
		const unsigned int	boundary_conditions = 1,
		const bool	is_real = false
	)

Apply morphological opening by a structuring element.

Parameters

kernel	Structuring element.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.
is_real	Do the opening in real (a.k.a 'non-flat') mode (true) rather than binary mode (false).

opening() [2/2]

CImg<T>& opening

(

const unsigned int

s

)

Apply morphological opening by a square structuring element of specified size.

Parameters

s	Size of the structuring element.

watershed()

CImg<T>& watershed	(	const CImg< t > &	priority,
		const bool	is_high_connectivity = false
	)

Compute watershed transform.

Parameters

priority	Priority map.
is_high_connectivity	Boolean that choose between 4(false)- or 8(true)-connectivity in 2D case, and between 6(false)- or 26(true)-connectivity in 3D case.

Note

Non-zero values of the instance instance are propagated to zero-valued ones according to specified the priority map.

deriche()

CImg<T>& deriche	(	const float	sigma,
		const unsigned int	order = 0,
		const char	axis = 'x',
		const unsigned int	boundary_conditions = 1
	)

Apply recursive Deriche filter.

Parameters

sigma	Standard deviation of the filter.
order	Order of the filter. Can be { 0=smooth-filter | 1=1st-derivative | 2=2nd-derivative }.
axis	Axis along which the filter is computed. Can be { 'x' | 'y' | 'z' | 'c' }.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.

vanvliet()

CImg<T>& vanvliet	(	const float	sigma,
		const unsigned int	order,
		const char	axis = 'x',
		const unsigned int	boundary_conditions = 1
	)

Van Vliet recursive Gaussian filter.

Parameters

sigma	standard deviation of the Gaussian filter
order	the order of the filter 0,1,2,3
axis	Axis along which the filter is computed. Can be { 'x' | 'y' | 'z' | 'c' }.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.

Note

dirichlet boundary condition has a strange behavior

I.T. Young, L.J. van Vliet, M. van Ginkel, Recursive Gabor filtering. IEEE Trans. Sig. Proc., vol. 50, pp. 2799-2805, 2002.

(this is an improvement over Young-Van Vliet, Sig. Proc. 44, 1995)

Boundary conditions (only for order 0) using Triggs matrix, from B. Triggs and M. Sdika. Boundary conditions for Young-van Vliet recursive filtering. IEEE Trans. Signal Processing, vol. 54, pp. 2365-2367, 2006.

blur() [1/2]

CImg<T>& blur	(	const float	sigma_x,
		const float	sigma_y,
		const float	sigma_z,
		const unsigned int	boundary_conditions = 1,
		const bool	is_gaussian = true
	)

Blur image.

Parameters

sigma_x	Standard deviation of the blur, along the X-axis.
sigma_y	Standard deviation of the blur, along the Y-axis.
sigma_z	Standard deviation of the blur, along the Z-axis.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.
is_gaussian	Tells if the blur uses a gaussian (true) or quasi-gaussian (false) kernel.

Note

• The blur is computed as a 0-order Vanvliet (gaussian) or Deriche filter (quasi-gaussian).
• This is a recursive algorithm, not depending on the values of the standard deviations.

See also

deriche(), vanvliet().

blur() [2/2]

CImg<T>& blur	(	const float	sigma,
		const unsigned int	boundary_conditions = 1,
		const bool	is_gaussian = true
	)

Blur image isotropically.

Parameters

sigma	Standard deviation of the blur.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.a
is_gaussian	Use a gaussian kernel (VanVliet) is set, a quasi-gaussian (Deriche) otherwise.

See also

deriche(), vanvliet().

blur_anisotropic() [1/2]

CImg<T>& blur_anisotropic	(	const CImg< t > &	G,
		const float	amplitude = 60,
		const float	dl = 0.8f,
		const float	da = 30,
		const float	gauss_prec = 2,
		const unsigned int	interpolation_type = 0,
		const bool	is_fast_approx = 1
	)

Blur image anisotropically, directed by a field of diffusion tensors.

Parameters

G	Field of square roots of diffusion tensors/vectors used to drive the smoothing.
amplitude	Amplitude of the smoothing.
dl	Spatial discretization.
da	Angular discretization.
gauss_prec	Precision of the diffusion process.
interpolation_type	Interpolation scheme. Can be { 0=nearest-neighbor | 1=linear | 2=Runge-Kutta }.
is_fast_approx	Tells if a fast approximation of the gaussian function is used or not.

blur_anisotropic() [2/2]

CImg<T>& blur_anisotropic	(	const float	amplitude,
		const float	sharpness = 0.7f,
		const float	anisotropy = 0.6f,
		const float	alpha = 0.6f,
		const float	sigma = 1.1f,
		const float	dl = 0.8f,
		const float	da = 30,
		const float	gauss_prec = 2,
		const unsigned int	interpolation_type = 0,
		const bool	is_fast_approx = true
	)

Blur image anisotropically, in an edge-preserving way.

Parameters

amplitude	Amplitude of the smoothing.
sharpness	Sharpness.
anisotropy	Anisotropy.
alpha	Standard deviation of the gradient blur.
sigma	Standard deviation of the structure tensor blur.
dl	Spatial discretization.
da	Angular discretization.
gauss_prec	Precision of the diffusion process.
interpolation_type	Interpolation scheme. Can be { 0=nearest-neighbor | 1=linear | 2=Runge-Kutta }.
is_fast_approx	Tells if a fast approximation of the gaussian function is used or not.

blur_bilateral() [1/2]

CImg<T>& blur_bilateral	(	const CImg< t > &	guide,
		const float	sigma_x,
		const float	sigma_y,
		const float	sigma_z,
		const float	sigma_r,
		const float	sampling_x,
		const float	sampling_y,
		const float	sampling_z,
		const float	sampling_r
	)

Blur image, with the joint bilateral filter.

Parameters

guide	Image used to model the smoothing weights.
sigma_x	Amount of blur along the X-axis.
sigma_y	Amount of blur along the Y-axis.
sigma_z	Amount of blur along the Z-axis.
sigma_r	Amount of blur along the value axis.
sampling_x	Amount of downsampling along the X-axis used for the approximation. Defaults (0) to sigma_x.
sampling_y	Amount of downsampling along the Y-axis used for the approximation. Defaults (0) to sigma_y.
sampling_z	Amount of downsampling along the Z-axis used for the approximation. Defaults (0) to sigma_z.
sampling_r	Amount of downsampling along the value axis used for the approximation. Defaults (0) to sigma_r.

Note

This algorithm uses the optimisation technique proposed by S. Paris and F. Durand, in ECCV'2006 (extended for 3D volumetric images). It is based on the reference implementation http://people.csail.mit.edu/jiawen/software/bilateralFilter.m

blur_bilateral() [2/2]

CImg<T>& blur_bilateral	(	const CImg< t > &	guide,
		const float	sigma_s,
		const float	sigma_r,
		const float	sampling_s = 0,
		const float	sampling_r = 0
	)

Blur image using the joint bilateral filter.

Parameters

guide	Image used to model the smoothing weights.
sigma_s	Amount of blur along the XYZ-axes.
sigma_r	Amount of blur along the value axis.
sampling_s	Amount of downsampling along the XYZ-axes used for the approximation. Defaults to sigma_s.
sampling_r	Amount of downsampling along the value axis used for the approximation. Defaults to sigma_r.

boxfilter()

CImg<T>& boxfilter	(	const float	boxsize,
		const int	order,
		const char	axis = 'x',
		const unsigned int	boundary_conditions = 1,
		const unsigned int	nb_iter = 1
	)

Parameters

boxsize	Size of the box window (can be subpixel)
order	the order of the filter 0,1 or 2.
axis	Axis along which the filter is computed. Can be { 'x' | 'y' | 'z' | 'c' }.
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.
nb_iter	Number of filter iterations.

blur_box() [1/2]

CImg<T>& blur_box	(	const float	boxsize_x,
		const float	boxsize_y,
		const float	boxsize_z,
		const unsigned int	boundary_conditions = 1,
		const unsigned int	nb_iter = 1
	)

Blur image with a box filter.

Parameters

boxsize_x	Size of the box window, along the X-axis (can be subpixel).
boxsize_y	Size of the box window, along the Y-axis (can be subpixel).
boxsize_z	Size of the box window, along the Z-axis (can be subpixel).
boundary_conditions	Boundary conditions. Can be { false=dirichlet | true=neumann | 2=periodic | 3=mirror }.
nb_iter	Number of filter iterations.

Note

• This is a recursive algorithm, not depending on the values of the box kernel size.

See also

blur().

blur_box() [2/2]

CImg<T>& blur_box	(	const float	boxsize,
		const unsigned int	boundary_conditions = 1
	)

Blur image with a box filter.

Parameters

boxsize	Size of the box window (can be subpixel).
boundary_conditions	Boundary conditions. Can be { 0=dirichlet | 1=neumann | 2=periodic | 3=mirror }.a

See also

deriche(), vanvliet().

blur_guided()

CImg<T>& blur_guided	(	const CImg< t > &	guide,
		const float	radius,
		const float	regularization
	)

Blur image, with the image guided filter.

Parameters

guide	Image used to guide the smoothing process.
radius	Spatial radius. If negative, it is expressed as a percentage of the largest image size.
regularization	Regularization parameter. If negative, it is expressed as a percentage of the guide value range.

Note

This method implements the filtering algorithm described in: He, Kaiming; Sun, Jian; Tang, Xiaoou, "Guided Image Filtering," Pattern Analysis and Machine Intelligence, IEEE Transactions on , vol.35, no.6, pp.1397,1409, June 2013

blur_patch()

CImg<T>& blur_patch	(	const CImg< t > &	guide,
		const float	sigma_s,
		const float	sigma_r,
		const unsigned int	patch_size = 3,
		const unsigned int	lookup_size = 4,
		const float	smoothness = 0,
		const bool	is_fast_approx = true
	)

Blur image using patch-based space.

Parameters

guide	Image used to model the smoothing weights.
sigma_s	Amount of blur along the XYZ-axes.
sigma_r	Amount of blur along the value axis.
patch_size	Size of the patches.
lookup_size	Size of the window to search similar patches.
smoothness	Smoothness for the patch comparison.
is_fast_approx	Tells if a fast approximation of the gaussian function is used or not.

blur_median()

CImg<T>& blur_median	(	const unsigned int	n,
		const float	threshold = 0
	)

Blur image with the median filter.

Parameters

n	Size of the median filter.
threshold	Threshold used to discard pixels too far from the current pixel value in the median computation.

sharpen()

CImg<T>& sharpen	(	const float	amplitude,
		const bool	sharpen_type = false,
		const float	edge = 1,
		const float	alpha = 0,
		const float	sigma = 0
	)

Sharpen image.

Parameters

amplitude	Sharpening amplitude
sharpen_type	Select sharpening method. Can be { false=inverse diffusion | true=shock filters }.
edge	Edge threshold (shock filters only).
alpha	Gradient smoothness (shock filters only).
sigma	Tensor smoothness (shock filters only).

get_gradient()

CImgList<Tfloat> get_gradient	(	const char *const	axes = 0,
		const int	scheme = 0
	)		const

Return image gradient.

Parameters

axes	Axes considered for the gradient computation, as a C-string (e.g "xy").
scheme	= Numerical scheme used for the gradient computation: -1 = Backward finite differences 0 = Centered finite differences (default) 1 = Forward finite differences 2 = Using Sobel kernels 3 = Using rotation invariant kernels 4 = Using Deriche recursive filter. 5 = Using Van Vliet recursive filter.

get_hessian()

CImgList<Tfloat> get_hessian

(

const char *const

axes = 0

)

const

Return image hessian.

Parameters

axes	Axes considered for the hessian computation, as a C-string (e.g "xy").

structure_tensors()

CImg<T>& structure_tensors

(

const bool

is_fwbw_scheme = false

)

Compute the structure tensor field of an image.

Parameters

is_fwbw_scheme

scheme. Can be { false=centered | true=forward-backward }

diffusion_tensors()

CImg<T>& diffusion_tensors	(	const float	sharpness = 0.7f,
		const float	anisotropy = 0.6f,
		const float	alpha = 0.6f,
		const float	sigma = 1.1f,
		const bool	is_sqrt = false
	)

Compute field of diffusion tensors for edge-preserving smoothing.

Parameters

sharpness	Sharpness
anisotropy	Anisotropy
alpha	Standard deviation of the gradient blur.
sigma	Standard deviation of the structure tensor blur.
is_sqrt	Tells if the square root of the tensor field is computed instead.

displacement()

CImg<T>& displacement	(	const CImg< T > &	source,
		const float	smoothness = 0.1f,
		const float	precision = 5.f,
		const unsigned int	nb_scales = 0,
		const unsigned int	iteration_max = 10000,
		const bool	is_backward = false,
		const CImg< floatT > &	guide = CImg<floatT>::const_empty()
	)

Estimate displacement field between two images.

Parameters

source	Reference image.
smoothness	Smoothness of estimated displacement field.
precision	Precision required for algorithm convergence.
nb_scales	Number of scales used to estimate the displacement field.
iteration_max	Maximum number of iterations allowed for one scale.
is_backward	If false, match I2(X + U(X)) = I1(X), else match I2(X) = I1(X - U(X)).
guide	Image used as the initial correspondence estimate for the algorithm. 'guide' may have a last channel with boolean values (0=false | other=true) that tells for each pixel if its correspondence vector is constrained to its initial value (constraint mask).

matchpatch()

CImg<T>& matchpatch	(	const CImg< T > &	patch_image,
		const unsigned int	patch_width,
		const unsigned int	patch_height,
		const unsigned int	patch_depth,
		const unsigned int	nb_iterations,
		const unsigned int	nb_randoms,
		const float	patch_penalization,
		const CImg< t1 > &	guide,
		CImg< t2 > &	matching_score
	)

Compute correspondence map between two images, using a patch-matching algorithm.

Parameters

	patch_image	The image containing the reference patches to match with the instance image.
	patch_width	Width of the patch used for matching.
	patch_height	Height of the patch used for matching.
	patch_depth	Depth of the patch used for matching.
	nb_iterations	Number of patch-match iterations.
	nb_randoms	Number of randomization attempts (per pixel).
	patch_penalization	Penalization factor in score related patch occurrences. if negative, also tells that identity result is not avoided.
	guide	Image used as the initial correspondence estimate for the algorithm. 'guide' may have a last channel with boolean values (0=false | other=true) that tells for each pixel if its correspondence vector is constrained to its initial value (constraint mask).
[out]	matching_score	Returned as the image of matching scores.

distance() [1/2]

CImg<T>& distance	(	const T &	value,
		const unsigned int	metric = 2
	)

Compute Euclidean distance function to a specified value.

Parameters

value	Reference value.
metric	Type of metric. Can be { 0=Chebyshev | 1=Manhattan | 2=Euclidean | 3=Squared-euclidean }.

Note

The distance transform implementation has been submitted by A. Meijster, and implements the article 'W.H. Hesselink, A. Meijster, J.B.T.M. Roerdink, "A general algorithm for computing distance transforms in linear time.", In: Mathematical Morphology and its Applications to Image and Signal Processing, J. Goutsias, L. Vincent, and D.S. Bloomberg (eds.), Kluwer, 2000, pp. 331-340.' The submitted code has then been modified to fit CImg coding style and constraints.

distance() [2/2]

CImg<T>& distance	(	const T &	value,
		const CImg< t > &	metric_mask
	)

Compute chamfer distance to a specified value, with a custom metric.

Parameters

value	Reference value.
metric_mask	Metric mask.

Note

The algorithm code has been initially proposed by A. Meijster, and modified by D. Tschumperlé.

distance_dijkstra()

CImg<T>& distance_dijkstra	(	const T &	value,
		const CImg< t > &	metric,
		const bool	is_high_connectivity,
		CImg< to > &	return_path
	)

Compute distance to a specified value, according to a custom metric (use dijkstra algorithm).

Parameters

	value	Reference value.
	metric	Field of distance potentials.
	is_high_connectivity	Tells if the algorithm uses low or high connectivity.
[out]	return_path	An image containing the nodes of the minimal path.

distance_eikonal() [1/2]

CImg<T>& distance_eikonal	(	const T &	value,
		const CImg< t > &	metric
	)

Compute distance map to one source point, according to a custom metric (use fast marching algorithm).

Parameters

value	Reference value.
metric	Field of distance potentials.

distance_eikonal() [2/2]

CImg<T>& distance_eikonal	(	const unsigned int	nb_iterations,
		const float	band_size = 0,
		const float	time_step = 0.5f
	)

Compute distance function to 0-valued isophotes, using the Eikonal PDE.

Parameters

nb_iterations	Number of PDE iterations.
band_size	Size of the narrow band.
time_step	Time step of the PDE iterations.

haar() [1/2]

CImg<T>& haar	(	const char	axis,
		const bool	invert = false,
		const unsigned int	nb_scales = 1
	)

Compute Haar multiscale wavelet transform.

Parameters

axis	Axis considered for the transform.
invert	Set inverse of direct transform.
nb_scales	Number of scales used for the transform.

haar() [2/2]

CImg<T>& haar	(	const bool	invert = false,
		const unsigned int	nb_scales = 1
	)

Compute Haar multiscale wavelet transform [overloading].

Parameters

invert	Set inverse of direct transform.
nb_scales	Number of scales used for the transform.

get_FFT()

CImgList<Tfloat> get_FFT	(	const char	axis,
		const bool	is_inverse = false
	)		const

Compute 1D Fast Fourier Transform, along a specified axis.

Parameters

axis	Axis along which the FFT is computed.
is_inverse	Tells if the forward (false) or inverse (true) FFT is computed.

FFT() [1/2]

static void FFT ( CImg< T > &  real, CImg< T > &  imag, const char  axis, const bool  is_inverse = false, const unsigned int  nb_threads = 0  )

static

Compute 1D Fast Fourier Transform, along a specified axis.

Parameters

[in,out]	real	Real part of the pixel values.
[in,out]	imag	Imaginary part of the pixel values.
	axis	Axis along which the FFT is computed.
	is_inverse	Tells if the forward (false) or inverse (true) FFT is computed.

FFT() [2/2]

static void FFT ( CImg< T > &  real, CImg< T > &  imag, const bool  is_inverse = false, const unsigned int  nb_threads = 0  )

static

Compute n-D Fast Fourier Transform.

Parameters

[in,out]	real	Real part of the pixel values.
[in,out]	imag	Imaginary part of the pixel values.
	is_inverse	Tells if the forward (false) or inverse (true) FFT is computed.
	nb_threads	Number of parallel threads used for the computation. Use 0 to set this to the number of available cpus.

rotate_object3d()

CImg<T>& rotate_object3d	(	const float	x,
		const float	y,
		const float	z,
		const float	w,
		const bool	is_quaternion = false
	)

Rotate 3D object's vertices.

Parameters

x	X-coordinate of the rotation axis, or first quaternion coordinate.
y	Y-coordinate of the rotation axis, or second quaternion coordinate.
z	Z-coordinate of the rotation axis, or second quaternion coordinate.
w	Angle of the rotation axis (in degree), or fourth quaternion coordinate.
is_quaternion	Tell is the four arguments denotes a set { axis + angle } or a quaternion (x,y,z,w).

shift_object3d() [1/2]

CImg<T>& shift_object3d	(	const float	tx,
		const float	ty = 0,
		const float	tz = 0
	)

Shift 3D object's vertices.

Parameters

tx	X-coordinate of the 3D displacement vector.
ty	Y-coordinate of the 3D displacement vector.
tz	Z-coordinate of the 3D displacement vector.

shift_object3d() [2/2]

CImg<T>& shift_object3d

(

)

Shift 3D object's vertices, so that it becomes centered.

Note

The object center is computed as its barycenter.

resize_object3d()

CImg<T>& resize_object3d	(	const float	sx,
		const float	sy = -100,
		const float	sz = -100
	)

Resize 3D object.

Parameters

sx	Width of the 3D object's bounding box.
sy	Height of the 3D object's bounding box.
sz	Depth of the 3D object's bounding box.

append_object3d()

CImg<T>& append_object3d	(	CImgList< tf > &	primitives,
		const CImg< tp > &	obj_vertices,
		const CImgList< tff > &	obj_primitives
	)

Merge two 3D objects together.

Parameters

[in,out]	primitives	Primitives data of the current 3D object.
	obj_vertices	Vertices data of the additional 3D object.
	obj_primitives	Primitives data of the additional 3D object.

texturize_object3d()

const CImg<T>& texturize_object3d	(	CImgList< tp > &	primitives,
		CImgList< tc > &	colors,
		const CImg< tt > &	texture,
		const CImg< tx > &	coords = CImg<tx>::const_empty()
	)		const

Texturize primitives of a 3D object.

Parameters

[in,out]	primitives	Primitives data of the 3D object.
[in,out]	colors	Colors data of the 3D object.
	texture	Texture image to map to 3D object.
	coords	Texture-mapping coordinates.

get_elevation3d()

CImg<floatT> get_elevation3d	(	CImgList< tf > &	primitives,
		CImgList< tc > &	colors,
		const CImg< te > &	elevation
	)		const

Generate a 3D elevation of the image instance.

Parameters

[out]	primitives	The returned list of the 3D object primitives (template type tf should be at least unsigned int).
[out]	colors	The returned list of the 3D object colors.
	elevation	The input elevation map.

Returns

The N vertices (xi,yi,zi) of the 3D object as a Nx3 CImg<float> image (0<=i<=N - 1).

Example

const CImg<float> img("reference.jpg");
CImgList<unsigned int> faces3d;
CImgList<unsigned char> colors3d;
const CImg<float> points3d = img.get_elevation3d(faces3d,colors3d,img.get_norm()*0.2);
CImg<unsigned char>().display_object3d("Elevation3d",points3d,faces3d,colors3d);

get_projections3d()

CImg<floatT> get_projections3d	(	CImgList< tf > &	primitives,
		CImgList< tc > &	colors,
		const unsigned int	x0,
		const unsigned int	y0,
		const unsigned int	z0,
		const bool	normalize_colors = false
	)		const

Generate the 3D projection planes of the image instance.

Parameters

[out]	primitives	Primitives data of the returned 3D object.
[out]	colors	Colors data of the returned 3D object.
	x0	X-coordinate of the projection point.
	y0	Y-coordinate of the projection point.
	z0	Z-coordinate of the projection point.
	normalize_colors	Tells if the created textures have normalized colors.

get_isoline3d()

CImg<floatT> get_isoline3d	(	CImgList< tf > &	primitives,
		const float	isovalue,
		const int	size_x = -100,
		const int	size_y = -100
	)		const

Generate a isoline of the image instance as a 3D object.

Parameters

[out]	primitives	The returned list of the 3D object primitives (template type tf should be at least unsigned int).
	isovalue	The returned list of the 3D object colors.
	size_x	The number of subdivisions along the X-axis.
	size_y	The number of subdisivions along the Y-axis.

Returns

The N vertices (xi,yi,zi) of the 3D object as a Nx3 CImg<float> image (0<=i<=N - 1).

Example

const CImg<float> img("reference.jpg");
CImgList<unsigned int> faces3d;
const CImg<float> points3d = img.get_isoline3d(faces3d,100);
CImg<unsigned char>().display_object3d("Isoline3d",points3d,faces3d,colors3d);

isoline3d() [1/2]

static CImg<floatT> isoline3d ( CImgList< tf > &  primitives, const tfunc &  func, const float  isovalue, const float  x0, const float  y0, const float  x1, const float  y1, const int  size_x = 256, const int  size_y = 256  )

static

Compute isolines of a function, as a 3D object.

Parameters

[out]	primitives	Primitives data of the resulting 3D object.
	func	Elevation functor. Must have operator()(x,y) defined.
	isovalue	Isovalue to extract from function.
	x0	X-coordinate of the starting point.
	y0	Y-coordinate of the starting point.
	x1	X-coordinate of the ending point.
	y1	Y-coordinate of the ending point.
	size_x	Resolution of the function along the X-axis.
	size_y	Resolution of the function along the Y-axis.

Note

Use the marching squares algorithm for extracting the isolines.

isoline3d() [2/2]

static void isoline3d ( tv &  add_vertex, tf &  add_segment, const tfunc &  func, const float  isovalue, const float  x0, const float  y0, const float  x1, const float  y1, const int  size_x, const int  size_y  )

static

Compute isolines of a function, as a 3D object.

Parameters

[out]	add_vertex	: Functor with operator()(x,y,z) defined for adding new vertex.
[out]	add_segment	: Functor with operator()(i,j) defined for adding new segment.
	func	Elevation function. Is of type float (*func)(const float x,const float y).
	isovalue	Isovalue to extract from function.
	x0	X-coordinate of the starting point.
	y0	Y-coordinate of the starting point.
	x1	X-coordinate of the ending point.
	y1	Y-coordinate of the ending point.
	size_x	Resolution of the function along the X-axis.
	size_y	Resolution of the function along the Y-axis.

Note

Use the marching squares algorithm for extracting the isolines.

get_isosurface3d()

CImg<floatT> get_isosurface3d	(	CImgList< tf > &	primitives,
		const float	isovalue,
		const int	size_x = -100,
		const int	size_y = -100,
		const int	size_z = -100
	)		const

Generate an isosurface of the image instance as a 3D object.

Parameters

[out]	primitives	The returned list of the 3D object primitives (template type tf should be at least unsigned int).
	isovalue	The returned list of the 3D object colors.
	size_x	Number of subdivisions along the X-axis.
	size_y	Number of subdisivions along the Y-axis.
	size_z	Number of subdisivions along the Z-axis.

Returns

The N vertices (xi,yi,zi) of the 3D object as a Nx3 CImg<float> image (0<=i<=N - 1).

Example

const CImg<float> img = CImg<unsigned char>("reference.jpg").resize(-100,-100,20);
CImgList<unsigned int> faces3d;
const CImg<float> points3d = img.get_isosurface3d(faces3d,100);
CImg<unsigned char>().display_object3d("Isosurface3d",points3d,faces3d,colors3d);

isosurface3d() [1/2]

static CImg<floatT> isosurface3d ( CImgList< tf > &  primitives, const tfunc &  func, const float  isovalue, const float  x0, const float  y0, const float  z0, const float  x1, const float  y1, const float  z1, const int  size_x = 32, const int  size_y = 32, const int  size_z = 32  )

static

Compute isosurface of a function, as a 3D object.

Parameters

[out]	primitives	Primitives data of the resulting 3D object.
	func	Implicit function. Is of type float (*func)(const float x, const float y, const float z).
	isovalue	Isovalue to extract.
	x0	X-coordinate of the starting point.
	y0	Y-coordinate of the starting point.
	z0	Z-coordinate of the starting point.
	x1	X-coordinate of the ending point.
	y1	Y-coordinate of the ending point.
	z1	Z-coordinate of the ending point.
	size_x	Resolution of the elevation function along the X-axis.
	size_y	Resolution of the elevation function along the Y-axis.
	size_z	Resolution of the elevation function along the Z-axis.

Note

Use the marching cubes algorithm for extracting the isosurface.

isosurface3d() [2/2]

static void isosurface3d ( tv &  add_vertex, tf &  add_triangle, const tfunc &  func, const float  isovalue, const float  x0, const float  y0, const float  z0, const float  x1, const float  y1, const float  z1, const int  size_x, const int  size_y, const int  size_z  )

static

Compute isosurface of a function, as a 3D object.

Parameters

[out]	add_vertex	: Functor with operator()(x,y,z) defined for adding new vertex.
[out]	add_triangle	: Functor with operator()(i,j) defined for adding new segment.
	func	Implicit function. Is of type float (*func)(const float x, const float y, const float z).
	isovalue	Isovalue to extract.
	x0	X-coordinate of the starting point.
	y0	Y-coordinate of the starting point.
	z0	Z-coordinate of the starting point.
	x1	X-coordinate of the ending point.
	y1	Y-coordinate of the ending point.
	z1	Z-coordinate of the ending point.
	size_x	Resolution of the elevation function along the X-axis.
	size_y	Resolution of the elevation function along the Y-axis.
	size_z	Resolution of the elevation function along the Z-axis.

Note

Use the marching cubes algorithm for extracting the isosurface.

elevation3d()

static CImg<floatT> elevation3d ( CImgList< tf > &  primitives, const tfunc &  func, const float  x0, const float  y0, const float  x1, const float  y1, const int  size_x = 256, const int  size_y = 256  )

static

Compute 3D elevation of a function as a 3D object.

Parameters

[out]	primitives	Primitives data of the resulting 3D object.
	func	Elevation function. Is of type float (*func)(const float x,const float y).
	x0	X-coordinate of the starting point.
	y0	Y-coordinate of the starting point.
	x1	X-coordinate of the ending point.
	y1	Y-coordinate of the ending point.
	size_x	Resolution of the function along the X-axis.
	size_y	Resolution of the function along the Y-axis.

box3d()

static CImg<floatT> box3d ( CImgList< tf > &  primitives, const float  size_x = 200, const float  size_y = 100, const float  size_z = 100  )

static

Generate a 3D box object.

Parameters

[out]	primitives	The returned list of the 3D object primitives (template type tf should be at least unsigned int).
	size_x	The width of the box (dimension along the X-axis).
	size_y	The height of the box (dimension along the Y-axis).
	size_z	The depth of the box (dimension along the Z-axis).

Returns

The N vertices (xi,yi,zi) of the 3D object as a Nx3 CImg<float> image (0<=i<=N - 1).

Example

CImgList<unsigned int> faces3d;
const CImg<float> points3d = CImg<float>::box3d(faces3d,10,20,30);
CImg<unsigned char>().display_object3d("Box3d",points3d,faces3d);

cone3d()

static CImg<floatT> cone3d ( CImgList< tf > &  primitives, const float  radius = 50, const float  size_z = 100, const unsigned int  subdivisions = 24  )

static

Generate a 3D cone.

Parameters

[out]	primitives	The returned list of the 3D object primitives (template type tf should be at least unsigned int).
	radius	The radius of the cone basis.
	size_z	The cone's height.
	subdivisions	The number of basis angular subdivisions.

Returns

The N vertices (xi,yi,zi) of the 3D object as a Nx3 CImg<float> image (0<=i<=N - 1).

Example

CImgList<unsigned int> faces3d;
const CImg<float> points3d = CImg<float>::cone3d(faces3d,50);
CImg<unsigned char>().display_object3d("Cone3d",points3d,faces3d);

cylinder3d()

static CImg<floatT> cylinder3d ( CImgList< tf > &  primitives, const float  radius = 50, const float  size_z = 100, const unsigned int  subdivisions = 24  )

static

Generate a 3D cylinder.

Parameters

[out]	primitives	The returned list of the 3D object primitives (template type tf should be at least unsigned int).
	radius	The radius of the cylinder basis.
	size_z	The cylinder's height.
	subdivisions	The number of basis angular subdivisions.

Returns

The N vertices (xi,yi,zi) of the 3D object as a Nx3 CImg<float> image (0<=i<=N - 1).

Example

CImgList<unsigned int> faces3d;
const CImg<float> points3d = CImg<float>::cylinder3d(faces3d,50);
CImg<unsigned char>().display_object3d("Cylinder3d",points3d,faces3d);

torus3d()

static CImg<floatT> torus3d ( CImgList< tf > &  primitives, const float  radius1 = 100, const float  radius2 = 30, const unsigned int  subdivisions1 = 24, const unsigned int  subdivisions2 = 12  )

static

Generate a 3D torus.

Parameters

[out]	primitives	The returned list of the 3D object primitives (template type tf should be at least unsigned int).
	radius1	The large radius.
	radius2	The small radius.
	subdivisions1	The number of angular subdivisions for the large radius.
	subdivisions2	The number of angular subdivisions for the small radius.

Returns

The N vertices (xi,yi,zi) of the 3D object as a Nx3 CImg<float> image (0<=i<=N - 1).

Example

CImgList<unsigned int> faces3d;
const CImg<float> points3d = CImg<float>::torus3d(faces3d,20,4);
CImg<unsigned char>().display_object3d("Torus3d",points3d,faces3d);

plane3d()

static CImg<floatT> plane3d ( CImgList< tf > &  primitives, const float  size_x = 100, const float  size_y = 100, const unsigned int  subdivisions_x = 10, const unsigned int  subdivisions_y = 10  )

static

Generate a 3D XY-plane.

Parameters

[out]	primitives	The returned list of the 3D object primitives (template type tf should be at least unsigned int).
	size_x	The width of the plane (dimension along the X-axis).
	size_y	The height of the plane (dimensions along the Y-axis).
	subdivisions_x	The number of planar subdivisions along the X-axis.
	subdivisions_y	The number of planar subdivisions along the Y-axis.

Returns

The N vertices (xi,yi,zi) of the 3D object as a Nx3 CImg<float> image (0<=i<=N - 1).

Example

CImgList<unsigned int> faces3d;
const CImg<float> points3d = CImg<float>::plane3d(faces3d,100,50);
CImg<unsigned char>().display_object3d("Plane3d",points3d,faces3d);

sphere3d()

static CImg<floatT> sphere3d ( CImgList< tf > &  primitives, const float  radius = 50, const unsigned int  subdivisions = 3  )

static

Generate a 3D sphere.

Parameters

[out]	primitives	The returned list of the 3D object primitives (template type tf should be at least unsigned int).
	radius	The radius of the sphere (dimension along the X-axis).
	subdivisions	The number of recursive subdivisions from an initial icosahedron.

Returns

The N vertices (xi,yi,zi) of the 3D object as a Nx3 CImg<float> image (0<=i<=N - 1).

Example

CImgList<unsigned int> faces3d;
const CImg<float> points3d = CImg<float>::sphere3d(faces3d,100,4);
CImg<unsigned char>().display_object3d("Sphere3d",points3d,faces3d);

ellipsoid3d()

static CImg<floatT> ellipsoid3d ( CImgList< tf > &  primitives, const CImg< t > &  tensor, const unsigned int  subdivisions = 3  )

static

Generate a 3D ellipsoid.

Parameters

[out]	primitives	The returned list of the 3D object primitives (template type tf should be at least unsigned int).
	tensor	The tensor which gives the shape and size of the ellipsoid.
	subdivisions	The number of recursive subdivisions from an initial stretched icosahedron.

Returns

The N vertices (xi,yi,zi) of the 3D object as a Nx3 CImg<float> image (0<=i<=N - 1).

Example

CImgList<unsigned int> faces3d;
const CImg<float> tensor = CImg<float>::diagonal(10,7,3),
                  points3d = CImg<float>::ellipsoid3d(faces3d,tensor,4);
CImg<unsigned char>().display_object3d("Ellipsoid3d",points3d,faces3d);

object3dtoCImg3d()

CImg<T>& object3dtoCImg3d	(	const CImgList< tp > &	primitives,
		const CImgList< tc > &	colors,
		const to &	opacities,
		const bool	full_check = true
	)

Convert 3D object into a CImg3d representation.

Parameters

primitives	Primitives data of the 3D object.
colors	Colors data of the 3D object.
opacities	Opacities data of the 3D object.
full_check	Tells if full checking of the 3D object must be performed.

CImg3dtoobject3d()

CImg<T>& CImg3dtoobject3d	(	CImgList< tp > &	primitives,
		CImgList< tc > &	colors,
		CImgList< to > &	opacities,
		const bool	full_check = true
	)

Convert CImg3d representation into a 3D object.

Parameters

[out]	primitives	Primitives data of the 3D object.
[out]	colors	Colors data of the 3D object.
[out]	opacities	Opacities data of the 3D object.
	full_check	Tells if full checking of the 3D object must be performed.

draw_point() [1/2]

CImg<T>& draw_point	(	const int	x0,
		const int	y0,
		const int	z0,
		const tc *const	color,
		const float	opacity = 1
	)

Draw a 3D point.

Parameters

x0	X-coordinate of the point.
y0	Y-coordinate of the point.
z0	Z-coordinate of the point.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.

Note

• To set pixel values without clipping needs, you should use the faster CImg::operator()() function.

Example:

CImg<unsigned char> img(100,100,1,3,0);
const unsigned char color[] = { 255,128,64 };
img.draw_point(50,50,color);

draw_point() [2/2]

CImg<T>& draw_point	(	const CImg< t > &	points,
		const tc *const	color,
		const float	opacity = 1
	)

Parameters

points	Image of vertices coordinates.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.

draw_line() [1/6]

CImg<T>& draw_line	(	int	x0,
		int	y0,
		int	x1,
		int	y1,
		const tc *const	color,
		const float	opacity = 1,
		const unsigned int	pattern = ~0U,
		const bool	init_hatch = true
	)

Draw a 2D line.

Parameters

x0	X-coordinate of the starting line point.
y0	Y-coordinate of the starting line point.
x1	X-coordinate of the ending line point.
y1	Y-coordinate of the ending line point.
color	Pointer to spectrum() consecutive values of type T, defining the drawing color.
opacity	Drawing opacity.
pattern	An integer whose bits describe the line pattern.
init_hatch	Tells if a reinitialization of the hash state must be done.

Note

• Line routine uses Bresenham's algorithm.
• Set init_hatch = false to draw consecutive hatched segments without breaking the line pattern.

Example:

CImg<unsigned char> img(100,100,1,3,0);
const unsigned char color[] = { 255,128,64 };
 img.draw_line(40,40,80,70,color);

draw_line() [2/6]

CImg<T>& draw_line	(	CImg< tz > &	zbuffer,
		int	x0,
		int	y0,
		const float	z0,
		int	x1,
		int	y1,
		const float	z1,
		const tc *const	color,
		const float	opacity = 1,
		const unsigned int	pattern = ~0U,
		const bool	init_hatch = true
	)

Draw a 2D line, with z-buffering.

Parameters

zbuffer	Zbuffer image.
x0	X-coordinate of the starting point.
y0	Y-coordinate of the starting point.
z0	Z-coordinate of the starting point
x1	X-coordinate of the ending point.
y1	Y-coordinate of the ending point.
z1	Z-coordinate of the ending point.
color	Pointer to spectrum() consecutive values of type T, defining the drawing color.
opacity	Drawing opacity.
pattern	An integer whose bits describe the line pattern.
init_hatch	Tells if a reinitialization of the hash state must be done.

draw_line() [3/6]

CImg<T>& draw_line	(	int	x0,
		int	y0,
		int	x1,
		int	y1,
		const CImg< tc > &	texture,
		int	tx0,
		int	ty0,
		int	tx1,
		int	ty1,
		const float	opacity = 1,
		const unsigned int	pattern = ~0U,
		const bool	init_hatch = true
	)

Draw a textured 2D line.

Parameters

x0	X-coordinate of the starting line point.
y0	Y-coordinate of the starting line point.
x1	X-coordinate of the ending line point.
y1	Y-coordinate of the ending line point.
texture	Texture image defining the pixel colors.
tx0	X-coordinate of the starting texture point.
ty0	Y-coordinate of the starting texture point.
tx1	X-coordinate of the ending texture point.
ty1	Y-coordinate of the ending texture point.
opacity	Drawing opacity.
pattern	An integer whose bits describe the line pattern.
init_hatch	Tells if the hash variable must be reinitialized.

Note

• Line routine uses the well known Bresenham's algorithm.

Example:

CImg<unsigned char> img(100,100,1,3,0), texture("texture256x256.ppm");
const unsigned char color[] = { 255,128,64 };
img.draw_line(40,40,80,70,texture,0,0,255,255);

draw_line() [4/6]

CImg<T>& draw_line	(	int	x0,
		int	y0,
		const float	z0,
		int	x1,
		int	y1,
		const float	z1,
		const CImg< tc > &	texture,
		const int	tx0,
		const int	ty0,
		const int	tx1,
		const int	ty1,
		const float	opacity = 1,
		const unsigned int	pattern = ~0U,
		const bool	init_hatch = true
	)

Draw a textured 2D line, with perspective correction.

Parameters

x0	X-coordinate of the starting point.
y0	Y-coordinate of the starting point.
z0	Z-coordinate of the starting point
x1	X-coordinate of the ending point.
y1	Y-coordinate of the ending point.
z1	Z-coordinate of the ending point.
texture	Texture image defining the pixel colors.
tx0	X-coordinate of the starting texture point.
ty0	Y-coordinate of the starting texture point.
tx1	X-coordinate of the ending texture point.
ty1	Y-coordinate of the ending texture point.
opacity	Drawing opacity.
pattern	An integer whose bits describe the line pattern.
init_hatch	Tells if the hash variable must be reinitialized.

draw_line() [5/6]

CImg<T>& draw_line	(	CImg< tz > &	zbuffer,
		int	x0,
		int	y0,
		const float	z0,
		int	x1,
		int	y1,
		const float	z1,
		const CImg< tc > &	texture,
		const int	tx0,
		const int	ty0,
		const int	tx1,
		const int	ty1,
		const float	opacity = 1,
		const unsigned int	pattern = ~0U,
		const bool	init_hatch = true
	)

Draw a textured 2D line, with perspective correction and z-buffering.

Parameters

zbuffer	Z-buffer image.
x0	X-coordinate of the starting point.
y0	Y-coordinate of the starting point.
z0	Z-coordinate of the starting point
x1	X-coordinate of the ending point.
y1	Y-coordinate of the ending point.
z1	Z-coordinate of the ending point.
texture	Texture image defining the pixel colors.
tx0	X-coordinate of the starting texture point.
ty0	Y-coordinate of the starting texture point.
tx1	X-coordinate of the ending texture point.
ty1	Y-coordinate of the ending texture point.
opacity	Drawing opacity.
pattern	An integer whose bits describe the line pattern.
init_hatch	Tells if the hash variable must be reinitialized.

draw_line() [6/6]

CImg<T>& draw_line	(	const CImg< tp > &	points,
		const tc *const	color,
		const float	opacity = 1,
		const unsigned int	pattern = ~0U,
		const bool	init_hatch = true
	)

Draw a set of consecutive lines.

Parameters

points	Coordinates of vertices, stored as a list of vectors.
color	Pointer to spectrum() consecutive values of type T, defining the drawing color.
opacity	Drawing opacity.
pattern	An integer whose bits describe the line pattern.
init_hatch	If set to true, init hatch motif.

Note

• This function uses several call to the single CImg::draw_line() procedure, depending on the vectors size in points.

draw_arrow()

CImg<T>& draw_arrow	(	const int	x0,
		const int	y0,
		const int	x1,
		const int	y1,
		const tc *const	color,
		const float	opacity = 1,
		const float	angle = 30,
		const float	length = -10,
		const unsigned int	pattern = ~0U
	)

Draw a 2D arrow.

Parameters

x0	X-coordinate of the starting arrow point (tail).
y0	Y-coordinate of the starting arrow point (tail).
x1	X-coordinate of the ending arrow point (head).
y1	Y-coordinate of the ending arrow point (head).
color	Pointer to spectrum() consecutive values of type T, defining the drawing color.
angle	Aperture angle of the arrow head.
length	Length of the arrow head. If negative, describes a percentage of the arrow length.
opacity	Drawing opacity.
pattern	An integer whose bits describe the line pattern.

draw_spline() [1/4]

CImg<T>& draw_spline	(	const int	x0,
		const int	y0,
		const float	u0,
		const float	v0,
		const int	x1,
		const int	y1,
		const float	u1,
		const float	v1,
		const tc *const	color,
		const float	opacity = 1,
		const float	precision = 0.25,
		const unsigned int	pattern = ~0U,
		const bool	init_hatch = true
	)

Draw a 2D spline.

Parameters

x0	X-coordinate of the starting curve point
y0	Y-coordinate of the starting curve point
u0	X-coordinate of the starting velocity
v0	Y-coordinate of the starting velocity
x1	X-coordinate of the ending curve point
y1	Y-coordinate of the ending curve point
u1	X-coordinate of the ending velocity
v1	Y-coordinate of the ending velocity
color	Pointer to spectrum() consecutive values of type T, defining the drawing color.
precision	Curve drawing precision.
opacity	Drawing opacity.
pattern	An integer whose bits describe the line pattern.
init_hatch	If true, init hatch motif.

Note

• The curve is a 2D cubic Bezier spline, from the set of specified starting/ending points and corresponding velocity vectors.
• The spline is drawn as a sequence of connected segments. The precision parameter sets the average number of pixels in each drawn segment.
• A cubic Bezier curve is sometimes defined by a set of 4 points { (x0,y0), (xa,ya), (xb,yb), (x1,y1) } where (x0,y0) is the starting point, (x1,y1) is the ending point and (xa,ya), (xb,yb) are two control points. The starting and ending velocities (u0,v0) and (u1,v1) can be deduced easily from the control points as u0 = (xa - x0), v0 = (ya - y0), u1 = (x1 - xb) and v1 = (y1 - yb).

Example:

CImg<unsigned char> img(100,100,1,3,0);
const unsigned char color[] = { 255,255,255 };
img.draw_spline(30,30,0,100,90,40,0,-100,color);

draw_spline() [2/4]

CImg<T>& draw_spline	(	const int	x0,
		const int	y0,
		const float	u0,
		const float	v0,
		const int	x1,
		const int	y1,
		const float	u1,
		const float	v1,
		const CImg< t > &	texture,
		const int	tx0,
		const int	ty0,
		const int	tx1,
		const int	ty1,
		const float	opacity = 1,
		const float	precision = 4,
		const unsigned int	pattern = ~0U,
		const bool	init_hatch = true
	)

Draw a textured 2D spline.

Parameters

x0	X-coordinate of the starting curve point
y0	Y-coordinate of the starting curve point
u0	X-coordinate of the starting velocity
v0	Y-coordinate of the starting velocity
x1	X-coordinate of the ending curve point
y1	Y-coordinate of the ending curve point
u1	X-coordinate of the ending velocity
v1	Y-coordinate of the ending velocity
texture	Texture image defining line pixel colors.
tx0	X-coordinate of the starting texture point.
ty0	Y-coordinate of the starting texture point.
tx1	X-coordinate of the ending texture point.
ty1	Y-coordinate of the ending texture point.
precision	Curve drawing precision.
opacity	Drawing opacity.
pattern	An integer whose bits describe the line pattern.
init_hatch	if true, reinit hatch motif.

draw_spline() [3/4]

CImg<T>& draw_spline	(	const CImg< tp > &	points,
		const CImg< tt > &	tangents,
		const tc *const	color,
		const float	opacity = 1,
		const bool	is_closed_set = false,
		const float	precision = 4,
		const unsigned int	pattern = ~0U,
		const bool	init_hatch = true
	)

Draw a set of consecutive splines.

Parameters

points	Vertices data.
tangents	Tangents data.
color	Pointer to spectrum() consecutive values of type T, defining the drawing color.
opacity	Drawing opacity.
is_closed_set	Tells if the drawn spline set is closed.
precision	Precision of the drawing.
pattern	An integer whose bits describe the line pattern.
init_hatch	If true, init hatch motif.

draw_spline() [4/4]

CImg<T>& draw_spline	(	const CImg< tp > &	points,
		const tc *const	color,
		const float	opacity = 1,
		const bool	is_closed_set = false,
		const float	precision = 4,
		const unsigned int	pattern = ~0U,
		const bool	init_hatch = true
	)

Draw a set of consecutive splines [overloading].

Similar to previous function, with the point tangents automatically estimated from the given points set.

draw_triangle() [1/9]

CImg<T>& draw_triangle	(	const int	x0,
		const int	y0,
		const int	x1,
		const int	y1,
		const int	x2,
		const int	y2,
		const tc *const	color,
		const float	opacity = 1
	)

Draw a filled 2D triangle.

Parameters

x0	X-coordinate of the first vertex.
y0	Y-coordinate of the first vertex.
x1	X-coordinate of the second vertex.
y1	Y-coordinate of the second vertex.
x2	X-coordinate of the third vertex.
y2	Y-coordinate of the third vertex.
color	Pointer to spectrum() consecutive values of type T, defining the drawing color.
opacity	Drawing opacity.

draw_triangle() [2/9]

CImg<T>& draw_triangle	(	const int	x0,
		const int	y0,
		const int	x1,
		const int	y1,
		const int	x2,
		const int	y2,
		const tc *const	color,
		const float	opacity,
		const unsigned int	pattern
	)

Draw a outlined 2D triangle.

Parameters

x0	X-coordinate of the first vertex.
y0	Y-coordinate of the first vertex.
x1	X-coordinate of the second vertex.
y1	Y-coordinate of the second vertex.
x2	X-coordinate of the third vertex.
y2	Y-coordinate of the third vertex.
color	Pointer to spectrum() consecutive values of type T, defining the drawing color.
opacity	Drawing opacity.
pattern	An integer whose bits describe the outline pattern.

draw_triangle() [3/9]

CImg<T>& draw_triangle	(	CImg< tz > &	zbuffer,
		int	x0,
		int	y0,
		const float	z0,
		int	x1,
		int	y1,
		const float	z1,
		int	x2,
		int	y2,
		const float	z2,
		const tc *const	color,
		const float	opacity = 1,
		const float	brightness = 1
	)

Draw a filled 2D triangle, with z-buffering.

Parameters

zbuffer	Z-buffer image.
x0	X-coordinate of the first vertex.
y0	Y-coordinate of the first vertex.
z0	Z-coordinate of the first vertex.
x1	X-coordinate of the second vertex.
y1	Y-coordinate of the second vertex.
z1	Z-coordinate of the second vertex.
x2	X-coordinate of the third vertex.
y2	Y-coordinate of the third vertex.
z2	Z-coordinate of the third vertex.
color	Pointer to spectrum() consecutive values of type T, defining the drawing color.
opacity	Drawing opacity.
brightness	Brightness factor.

draw_triangle() [4/9]

CImg<T>& draw_triangle	(	int	x0,
		int	y0,
		int	x1,
		int	y1,
		int	x2,
		int	y2,
		const tc *const	color,
		float	bs0,
		float	bs1,
		float	bs2,
		const float	opacity = 1
	)

Draw a Gouraud-shaded 2D triangle.

Parameters

x0	X-coordinate of the first vertex in the image instance.
y0	Y-coordinate of the first vertex in the image instance.
x1	X-coordinate of the second vertex in the image instance.
y1	Y-coordinate of the second vertex in the image instance.
x2	X-coordinate of the third vertex in the image instance.
y2	Y-coordinate of the third vertex in the image instance.
color	Pointer to spectrum() consecutive values, defining the drawing color.
bs0	Brightness factor of the first vertex (in [0,2]).
bs1	brightness factor of the second vertex (in [0,2]).
bs2	brightness factor of the third vertex (in [0,2]).
opacity	Drawing opacity.

draw_triangle() [5/9]

CImg<T>& draw_triangle	(	int	x0,
		int	y0,
		int	x1,
		int	y1,
		int	x2,
		int	y2,
		const tc *	color0,
		const tc *	color1,
		const tc *	color2,
		const float	opacity = 1
	)

Draw a color-interpolated 2D triangle.

Parameters

x0	X-coordinate of the first vertex in the image instance.
y0	Y-coordinate of the first vertex in the image instance.
x1	X-coordinate of the second vertex in the image instance.
y1	Y-coordinate of the second vertex in the image instance.
x2	X-coordinate of the third vertex in the image instance.
y2	Y-coordinate of the third vertex in the image instance.
color1	Pointer to spectrum() consecutive values of type T, defining the color of the first vertex.
color2	Pointer to spectrum() consecutive values of type T, defining the color of the second vertex.
color3	Pointer to spectrum() consecutive values of type T, defining the color of the third vertex.
opacity	Drawing opacity.

draw_triangle() [6/9]

CImg<T>& draw_triangle	(	int	x0,
		int	y0,
		int	x1,
		int	y1,
		int	x2,
		int	y2,
		const CImg< tc > &	texture,
		int	tx0,
		int	ty0,
		int	tx1,
		int	ty1,
		int	tx2,
		int	ty2,
		const float	opacity = 1,
		const float	brightness = 1
	)

Draw a textured 2D triangle.

Parameters

x0	X-coordinate of the first vertex in the image instance.
y0	Y-coordinate of the first vertex in the image instance.
x1	X-coordinate of the second vertex in the image instance.
y1	Y-coordinate of the second vertex in the image instance.
x2	X-coordinate of the third vertex in the image instance.
y2	Y-coordinate of the third vertex in the image instance.
texture	Texture image used to fill the triangle.
tx0	X-coordinate of the first vertex in the texture image.
ty0	Y-coordinate of the first vertex in the texture image.
tx1	X-coordinate of the second vertex in the texture image.
ty1	Y-coordinate of the second vertex in the texture image.
tx2	X-coordinate of the third vertex in the texture image.
ty2	Y-coordinate of the third vertex in the texture image.
opacity	Drawing opacity.
brightness	Brightness factor of the drawing (in [0,2]).

draw_triangle() [7/9]

CImg<T>& draw_triangle	(	int	x0,
		int	y0,
		int	x1,
		int	y1,
		int	x2,
		int	y2,
		const tc *const	color,
		const CImg< tl > &	light,
		int	lx0,
		int	ly0,
		int	lx1,
		int	ly1,
		int	lx2,
		int	ly2,
		const float	opacity = 1
	)

Draw a Phong-shaded 2D triangle.

Parameters

x0	X-coordinate of the first vertex in the image instance.
y0	Y-coordinate of the first vertex in the image instance.
x1	X-coordinate of the second vertex in the image instance.
y1	Y-coordinate of the second vertex in the image instance.
x2	X-coordinate of the third vertex in the image instance.
y2	Y-coordinate of the third vertex in the image instance.
color	Pointer to spectrum() consecutive values, defining the drawing color.
light	Light image.
lx0	X-coordinate of the first vertex in the light image.
ly0	Y-coordinate of the first vertex in the light image.
lx1	X-coordinate of the second vertex in the light image.
ly1	Y-coordinate of the second vertex in the light image.
lx2	X-coordinate of the third vertex in the light image.
ly2	Y-coordinate of the third vertex in the light image.
opacity	Drawing opacity.

draw_triangle() [8/9]

CImg<T>& draw_triangle	(	int	x0,
		int	y0,
		int	x1,
		int	y1,
		int	x2,
		int	y2,
		const CImg< tc > &	texture,
		int	tx0,
		int	ty0,
		int	tx1,
		int	ty1,
		int	tx2,
		int	ty2,
		float	bs0,
		float	bs1,
		float	bs2,
		const float	opacity = 1
	)

Draw a textured Gouraud-shaded 2D triangle.

Parameters

x0	X-coordinate of the first vertex in the image instance.
y0	Y-coordinate of the first vertex in the image instance.
x1	X-coordinate of the second vertex in the image instance.
y1	Y-coordinate of the second vertex in the image instance.
x2	X-coordinate of the third vertex in the image instance.
y2	Y-coordinate of the third vertex in the image instance.
texture	Texture image used to fill the triangle.
tx0	X-coordinate of the first vertex in the texture image.
ty0	Y-coordinate of the first vertex in the texture image.
tx1	X-coordinate of the second vertex in the texture image.
ty1	Y-coordinate of the second vertex in the texture image.
tx2	X-coordinate of the third vertex in the texture image.
ty2	Y-coordinate of the third vertex in the texture image.
bs0	Brightness factor of the first vertex.
bs1	Brightness factor of the second vertex.
bs2	Brightness factor of the third vertex.
opacity	Drawing opacity.

draw_triangle() [9/9]

CImg<T>& draw_triangle	(	int	x0,
		int	y0,
		int	x1,
		int	y1,
		int	x2,
		int	y2,
		const CImg< tc > &	texture,
		int	tx0,
		int	ty0,
		int	tx1,
		int	ty1,
		int	tx2,
		int	ty2,
		const CImg< tl > &	light,
		int	lx0,
		int	ly0,
		int	lx1,
		int	ly1,
		int	lx2,
		int	ly2,
		const float	opacity = 1
	)

Draw a textured Phong-shaded 2D triangle.

Parameters

x0	X-coordinate of the first vertex in the image instance.
y0	Y-coordinate of the first vertex in the image instance.
x1	X-coordinate of the second vertex in the image instance.
y1	Y-coordinate of the second vertex in the image instance.
x2	X-coordinate of the third vertex in the image instance.
y2	Y-coordinate of the third vertex in the image instance.
texture	Texture image used to fill the triangle.
tx0	X-coordinate of the first vertex in the texture image.
ty0	Y-coordinate of the first vertex in the texture image.
tx1	X-coordinate of the second vertex in the texture image.
ty1	Y-coordinate of the second vertex in the texture image.
tx2	X-coordinate of the third vertex in the texture image.
ty2	Y-coordinate of the third vertex in the texture image.
light	Light image.
lx0	X-coordinate of the first vertex in the light image.
ly0	Y-coordinate of the first vertex in the light image.
lx1	X-coordinate of the second vertex in the light image.
ly1	Y-coordinate of the second vertex in the light image.
lx2	X-coordinate of the third vertex in the light image.
ly2	Y-coordinate of the third vertex in the light image.
opacity	Drawing opacity.

draw_rectangle() [1/3]

CImg<T>& draw_rectangle	(	const int	x0,
		const int	y0,
		const int	z0,
		const int	c0,
		const int	x1,
		const int	y1,
		const int	z1,
		const int	c1,
		const T	val,
		const float	opacity = 1
	)

Draw a filled 4D rectangle.

Parameters

x0	X-coordinate of the upper-left rectangle corner.
y0	Y-coordinate of the upper-left rectangle corner.
z0	Z-coordinate of the upper-left rectangle corner.
c0	C-coordinate of the upper-left rectangle corner.
x1	X-coordinate of the lower-right rectangle corner.
y1	Y-coordinate of the lower-right rectangle corner.
z1	Z-coordinate of the lower-right rectangle corner.
c1	C-coordinate of the lower-right rectangle corner.
val	Scalar value used to fill the rectangle area.
opacity	Drawing opacity.

draw_rectangle() [2/3]

CImg<T>& draw_rectangle	(	const int	x0,
		const int	y0,
		const int	z0,
		const int	x1,
		const int	y1,
		const int	z1,
		const tc *const	color,
		const float	opacity = 1
	)

Draw a filled 3D rectangle.

Parameters

x0	X-coordinate of the upper-left rectangle corner.
y0	Y-coordinate of the upper-left rectangle corner.
z0	Z-coordinate of the upper-left rectangle corner.
x1	X-coordinate of the lower-right rectangle corner.
y1	Y-coordinate of the lower-right rectangle corner.
z1	Z-coordinate of the lower-right rectangle corner.
color	Pointer to spectrum() consecutive values of type T, defining the drawing color.
opacity	Drawing opacity.

draw_rectangle() [3/3]

CImg<T>& draw_rectangle	(	const int	x0,
		const int	y0,
		const int	x1,
		const int	y1,
		const tc *const	color,
		const float	opacity = 1
	)

Draw a filled 2D rectangle.

Parameters

x0	X-coordinate of the upper-left rectangle corner.
y0	Y-coordinate of the upper-left rectangle corner.
x1	X-coordinate of the lower-right rectangle corner.
y1	Y-coordinate of the lower-right rectangle corner.
color	Pointer to spectrum() consecutive values of type T, defining the drawing color.
opacity	Drawing opacity.

draw_polygon()

CImg<T>& draw_polygon	(	const CImg< tp > &	points,
		const tc *const	color,
		const float	opacity = 1
	)

Draw a filled 2D polygon.

Parameters

points	Set of polygon vertices.
color	Pointer to spectrum() consecutive values of type T, defining the drawing color.
opacity	Drawing opacity.

draw_ellipse() [1/4]

CImg<T>& draw_ellipse	(	const int	x0,
		const int	y0,
		const float	r1,
		const float	r2,
		const float	angle,
		const tc *const	color,
		const float	opacity = 1
	)

Draw a filled 2D ellipse.

Parameters

x0	X-coordinate of the ellipse center.
y0	Y-coordinate of the ellipse center.
r1	First radius of the ellipse.
r2	Second radius of the ellipse.
angle	Angle of the first radius.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.

draw_ellipse() [2/4]

CImg<T>& draw_ellipse	(	const int	x0,
		const int	y0,
		const CImg< t > &	tensor,
		const tc *const	color,
		const float	opacity = 1
	)

Draw a filled 2D ellipse [overloading].

Parameters

x0	X-coordinate of the ellipse center.
y0	Y-coordinate of the ellipse center.
tensor	Diffusion tensor describing the ellipse.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.

draw_ellipse() [3/4]

CImg<T>& draw_ellipse	(	const int	x0,
		const int	y0,
		const float	r1,
		const float	r2,
		const float	angle,
		const tc *const	color,
		const float	opacity,
		const unsigned int	pattern
	)

Draw an outlined 2D ellipse.

Parameters

x0	X-coordinate of the ellipse center.
y0	Y-coordinate of the ellipse center.
r1	First radius of the ellipse.
r2	Second radius of the ellipse.
angle	Angle of the first radius.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.
pattern	An integer whose bits describe the outline pattern.

draw_ellipse() [4/4]

CImg<T>& draw_ellipse	(	const int	x0,
		const int	y0,
		const CImg< t > &	tensor,
		const tc *const	color,
		const float	opacity,
		const unsigned int	pattern
	)

Draw an outlined 2D ellipse [overloading].

Parameters

x0	X-coordinate of the ellipse center.
y0	Y-coordinate of the ellipse center.
tensor	Diffusion tensor describing the ellipse.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.
pattern	An integer whose bits describe the outline pattern.

draw_circle() [1/2]

CImg<T>& draw_circle	(	const int	x0,
		const int	y0,
		int	radius,
		const tc *const	color,
		const float	opacity = 1
	)

Draw a filled 2D circle.

Parameters

x0	X-coordinate of the circle center.
y0	Y-coordinate of the circle center.
radius	Circle radius.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.

Note

• Circle version of the Bresenham's algorithm is used.

draw_circle() [2/2]

CImg<T>& draw_circle	(	const int	x0,
		const int	y0,
		int	radius,
		const tc *const	color,
		const float	opacity,
		const unsigned int	pattern
	)

Draw an outlined 2D circle.

Parameters

x0	X-coordinate of the circle center.
y0	Y-coordinate of the circle center.
radius	Circle radius.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.
pattern	An integer whose bits describe the outline pattern.

draw_image() [1/2]

CImg<T>& draw_image	(	const int	x0,
		const int	y0,
		const int	z0,
		const int	c0,
		const CImg< t > &	sprite,
		const float	opacity = 1
	)

Draw an image.

Parameters

sprite	Sprite image.
x0	X-coordinate of the sprite position.
y0	Y-coordinate of the sprite position.
z0	Z-coordinate of the sprite position.
c0	C-coordinate of the sprite position.
opacity	Drawing opacity.

draw_image() [2/2]

CImg<T>& draw_image	(	const int	x0,
		const int	y0,
		const int	z0,
		const int	c0,
		const CImg< ti > &	sprite,
		const CImg< tm > &	mask,
		const float	opacity = 1,
		const float	mask_max_value = 1
	)

Draw a masked image.

Parameters

sprite	Sprite image.
mask	Mask image.
x0	X-coordinate of the sprite position in the image instance.
y0	Y-coordinate of the sprite position in the image instance.
z0	Z-coordinate of the sprite position in the image instance.
c0	C-coordinate of the sprite position in the image instance.
mask_max_value	Maximum pixel value of the mask image mask.
opacity	Drawing opacity.

Note

• Pixel values of mask set the opacity of the corresponding pixels in sprite.
• Dimensions along x,y and z of sprite and mask must be the same.

draw_text() [1/4]

CImg<T>& draw_text	(	const int	x0,
		const int	y0,
		const char *const	text,
		const tc1 *const	foreground_color,
		const tc2 *const	background_color,
		const float	opacity,
		const CImgList< t > *const	font,
			...
	)

Draw a text string.

Parameters

x0	X-coordinate of the text in the image instance.
y0	Y-coordinate of the text in the image instance.
text	Format of the text ('printf'-style format string).
foreground_color	Pointer to spectrum() consecutive values, defining the foreground drawing color.
background_color	Pointer to spectrum() consecutive values, defining the background drawing color.
opacity	Drawing opacity.
font	Font used for drawing text.

draw_text() [2/4]

CImg<T>& draw_text	(	const int	x0,
		const int	y0,
		const char *const	text,
		const tc *const	foreground_color,
		const int	,
		const float	opacity,
		const CImgList< t > *const	font,
			...
	)

Draw a text string [overloading].

Note

A transparent background is used for the text.

draw_text() [3/4]

CImg<T>& draw_text	(	const int	x0,
		const int	y0,
		const char *const	text,
		const int	,
		const tc *const	background_color,
		const float	opacity,
		const CImgList< t > *const	font,
			...
	)

Draw a text string [overloading].

Note

A transparent foreground is used for the text.

draw_text() [4/4]

CImg<T>& draw_text	(	const int	x0,
		const int	y0,
		const char *const	text,
		const tc1 *const	foreground_color,
		const tc2 *const	background_color,
		const float	opacity = 1,
		const unsigned int	font_height = 13,
			...
	)

Draw a text string [overloading].

Parameters

x0	X-coordinate of the text in the image instance.
y0	Y-coordinate of the text in the image instance.
text	Format of the text ('printf'-style format string).
foreground_color	Array of spectrum() values of type T, defining the foreground color (0 means 'transparent').
background_color	Array of spectrum() values of type T, defining the background color (0 means 'transparent').
opacity	Drawing opacity.
font_height	Height of the text font (exact match for 13,32,64,128, interpolated otherwise).

draw_quiver() [1/2]

CImg<T>& draw_quiver	(	const CImg< t1 > &	flow,
		const t2 *const	color,
		const float	opacity = 1,
		const unsigned int	sampling = 25,
		const float	factor = -20,
		const bool	is_arrow = true,
		const unsigned int	pattern = ~0U
	)

Draw a 2D vector field.

Parameters

flow	Image of 2D vectors used as input data.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.
sampling	Length (in pixels) between each arrow.
factor	Length factor of each arrow (if <0, computed as a percentage of the maximum length).
is_arrow	Tells if arrows must be drawn, instead of oriented segments.
pattern	Used pattern to draw lines.

Note

Clipping is supported.

draw_quiver() [2/2]

CImg<T>& draw_quiver	(	const CImg< t1 > &	flow,
		const CImg< t2 > &	color,
		const float	opacity = 1,
		const unsigned int	sampling = 25,
		const float	factor = -20,
		const bool	is_arrow = true,
		const unsigned int	pattern = ~0U
	)

Draw a 2D vector field, using a field of colors.

Parameters

flow	Image of 2D vectors used as input data.
color	Image of spectrum()-D vectors corresponding to the color of each arrow.
opacity	Opacity of the drawing.
sampling	Length (in pixels) between each arrow.
factor	Length factor of each arrow (if <0, computed as a percentage of the maximum length).
is_arrow	Tells if arrows must be drawn, instead of oriented segments.
pattern	Used pattern to draw lines.

Note

Clipping is supported.

draw_axis() [1/2]

CImg<T>& draw_axis	(	const CImg< t > &	values_x,
		const int	y,
		const tc *const	color,
		const float	opacity = 1,
		const unsigned int	pattern = ~0U,
		const unsigned int	font_height = 13,
		const bool	allow_zero = true,
		const float	round_x = 0
	)

Draw a labeled horizontal axis.

Parameters

values_x	Values along the horizontal axis.
y	Y-coordinate of the horizontal axis in the image instance.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.
pattern	Drawing pattern.
font_height	Height of the labels (exact match for 13,23,53,103, interpolated otherwise).
allow_zero	Enable/disable the drawing of label '0' if found.

draw_axis() [2/2]

CImg<T>& draw_axis	(	const int	x,
		const CImg< t > &	values_y,
		const tc *const	color,
		const float	opacity = 1,
		const unsigned int	pattern = ~0U,
		const unsigned int	font_height = 13,
		const bool	allow_zero = true,
		const float	round_y = 0
	)

Draw a labeled vertical axis.

Parameters

x	X-coordinate of the vertical axis in the image instance.
values_y	Values along the Y-axis.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.
pattern	Drawing pattern.
font_height	Height of the labels (exact match for 13,23,53,103, interpolated otherwise).
allow_zero	Enable/disable the drawing of label '0' if found.

draw_axes()

CImg<T>& draw_axes	(	const CImg< tx > &	values_x,
		const CImg< ty > &	values_y,
		const tc *const	color,
		const float	opacity = 1,
		const unsigned int	pattern_x = ~0U,
		const unsigned int	pattern_y = ~0U,
		const unsigned int	font_height = 13,
		const bool	allow_zero = true,
		const float	round_x = 0,
		const float	round_y = 0
	)

Draw labeled horizontal and vertical axes.

Parameters

values_x	Values along the X-axis.
values_y	Values along the Y-axis.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.
pattern_x	Drawing pattern for the X-axis.
pattern_y	Drawing pattern for the Y-axis.
font_height	Height of the labels (exact match for 13,23,53,103, interpolated otherwise).
allow_zero	Enable/disable the drawing of label '0' if found.

draw_grid()

CImg<T>& draw_grid	(	const CImg< tx > &	values_x,
		const CImg< ty > &	values_y,
		const tc *const	color,
		const float	opacity = 1,
		const unsigned int	pattern_x = ~0U,
		const unsigned int	pattern_y = ~0U
	)

Draw 2D grid.

Parameters

values_x	X-coordinates of the vertical lines.
values_y	Y-coordinates of the horizontal lines.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.
pattern_x	Drawing pattern for vertical lines.
pattern_y	Drawing pattern for horizontal lines.

draw_graph()

CImg<T>& draw_graph	(	const CImg< t > &	data,
		const tc *const	color,
		const float	opacity = 1,
		const unsigned int	plot_type = 1,
		const int	vertex_type = 1,
		const double	ymin = 0,
		const double	ymax = 0,
		const unsigned int	pattern = ~0U
	)

Draw 1D graph.

Parameters

data	Image containing the graph values I = f(x).
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.
plot_type	Define the type of the plot: 0 = No plot. 1 = Plot using segments. 2 = Plot using cubic splines. 3 = Plot with bars.
vertex_type	Define the type of points: 0 = No points. 1 = Point. 2 = Straight cross. 3 = Diagonal cross. 4 = Filled circle. 5 = Outlined circle. 6 = Square. 7 = Diamond.
ymin	Lower bound of the y-range.
ymax	Upper bound of the y-range.
pattern	Drawing pattern.

Note

• if ymin==ymax==0, the y-range is computed automatically from the input samples.

draw_fill()

CImg<T>& draw_fill	(	const int	x0,
		const int	y0,
		const int	z0,
		const tc *const	color,
		const float	opacity,
		CImg< t > &	region,
		const float	tolerance = 0,
		const bool	is_high_connectivity = false
	)

Draw filled 3D region with the flood fill algorithm.

Parameters

	x0	X-coordinate of the starting point of the region to fill.
	y0	Y-coordinate of the starting point of the region to fill.
	z0	Z-coordinate of the starting point of the region to fill.
	color	Pointer to spectrum() consecutive values, defining the drawing color.
[out]	region	Image that will contain the mask of the filled region mask, as an output.
	tolerance	Tolerance concerning neighborhood values.
	opacity	Opacity of the drawing.
	is_high_connectivity	Tells if 8-connexity must be used.

Returns

region is initialized with the binary mask of the filled region.

draw_plasma()

CImg<T>& draw_plasma	(	const float	alpha = 1,
		const float	beta = 0,
		const unsigned int	scale = 8
	)

Draw a random plasma texture.

Parameters

alpha	Alpha-parameter.
beta	Beta-parameter.
scale	Scale-parameter.

Note

Use the mid-point algorithm to render.

draw_mandelbrot()

CImg<T>& draw_mandelbrot	(	const int	x0,
		const int	y0,
		const int	x1,
		const int	y1,
		const CImg< tc > &	colormap,
		const float	opacity = 1,
		const double	z0r = -2,
		const double	z0i = -2,
		const double	z1r = 2,
		const double	z1i = 2,
		const unsigned int	iteration_max = 255,
		const bool	is_normalized_iteration = false,
		const bool	is_julia_set = false,
		const double	param_r = 0,
		const double	param_i = 0
	)

Draw a quadratic Mandelbrot or Julia 2D fractal.

Parameters

x0	X-coordinate of the upper-left pixel.
y0	Y-coordinate of the upper-left pixel.
x1	X-coordinate of the lower-right pixel.
y1	Y-coordinate of the lower-right pixel.
palette	Colormap.
opacity	Drawing opacity.
z0r	Real part of the upper-left fractal vertex.
z0i	Imaginary part of the upper-left fractal vertex.
z1r	Real part of the lower-right fractal vertex.
z1i	Imaginary part of the lower-right fractal vertex.
iteration_max	Maximum number of iterations for each estimated point.
is_normalized_iteration	Tells if iterations are normalized.
is_julia_set	Tells if the Mandelbrot or Julia set is rendered.
param_r	Real part of the Julia set parameter.
param_i	Imaginary part of the Julia set parameter.

Note

Fractal rendering is done by the Escape Time Algorithm.

draw_gaussian() [1/2]

CImg<T>& draw_gaussian	(	const float	xc,
		const float	sigma,
		const tc *const	color,
		const float	opacity = 1
	)

Draw a 1D gaussian function.

Parameters

xc	X-coordinate of the gaussian center.
sigma	Standard variation of the gaussian distribution.
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.

draw_gaussian() [2/2]

CImg<T>& draw_gaussian	(	const float	xc,
		const float	yc,
		const CImg< t > &	tensor,
		const tc *const	color,
		const float	opacity = 1
	)

Draw a 2D gaussian function.

Parameters

xc	X-coordinate of the gaussian center.
yc	Y-coordinate of the gaussian center.
tensor	Covariance matrix (must be 2x2).
color	Pointer to spectrum() consecutive values, defining the drawing color.
opacity	Drawing opacity.

draw_object3d()

CImg<T>& draw_object3d	(	const float	x0,
		const float	y0,
		const float	z0,
		const CImg< tp > &	vertices,
		const CImgList< tf > &	primitives,
		const CImgList< tc > &	colors,
		const CImg< to > &	opacities,
		const unsigned int	render_type = 4,
		const bool	is_double_sided = false,
		const float	focale = 700,
		const float	lightx = 0,
		const float	lighty = 0,
		const float	lightz = -5e8,
		const float	specular_lightness = 0.2f,
		const float	specular_shininess = 0.1f,
		const float	g_opacity = 1
	)

Draw a 3D object.

Parameters

x0	X-coordinate of the 3D object position
y0	Y-coordinate of the 3D object position
z0	Z-coordinate of the 3D object position
vertices	Image Nx3 describing 3D point coordinates
primitives	List of P primitives
colors	List of P color (or textures)
opacities	Image or list of P opacities
render_type	d Render type (0=Points, 1=Lines, 2=Faces (no light), 3=Faces (flat), 4=Faces(Gouraud)
is_double_sided	Tells if object faces have two sides or are oriented.
focale	length of the focale (0 for parallel projection)
lightx	X-coordinate of the light
lighty	Y-coordinate of the light
lightz	Z-coordinate of the light
specular_lightness	Amount of specular light.
specular_shininess	Shininess of the object
g_opacity	Global opacity of the object.

select()

CImg<T>& select	(	CImgDisplay &	disp,
		const unsigned int	feature_type = 2,
		unsigned int *const	XYZ = 0,
		const bool	exit_on_anykey = false,
		const bool	is_deep_selection_default = false
	)

Launch simple interface to select a shape from an image.

Parameters

disp	Display window to use.
feature_type	Type of feature to select. Can be { 0=point | 1=line | 2=rectangle | 3=ellipse }.
XYZ	Pointer to 3 values X,Y,Z which tells about the projection point coordinates, for volumetric images.
exit_on_anykey	Exit function when any key is pressed.

load()

CImg<T>& load

(

const char *const

filename

)

Load image from a file.

Parameters

filename

Filename, as a C-string.

Note

The extension of filename defines the file format. If no filename extension is provided, CImg<T>::get_load() will try to load the file as a .cimg or .cimgz file.

load_ascii()

CImg<T>& load_ascii

(

const char *const

filename

)

Load image from an ascii file.

Parameters

filename

Filename, as a C -string.

load_dlm()

CImg<T>& load_dlm

(

const char *const

filename

)

Load image from a DLM file.

Parameters

filename

Filename, as a C-string.

load_bmp()

CImg<T>& load_bmp

(

const char *const

filename

)

Load image from a BMP file.

Parameters

filename

Filename, as a C-string.

load_jpeg()

CImg<T>& load_jpeg

(

const char *const

filename

)

Load image from a JPEG file.

Parameters

filename

Filename, as a C-string.

load_magick()

CImg<T>& load_magick

(

const char *const

filename

)

Load image from a file, using Magick++ library.

Parameters

filename

Filename, as a C-string.

load_png()

CImg<T>& load_png	(	const char *const	filename,
		unsigned int *const	bits_per_value = 0
	)

Load image from a PNG file.

Parameters

	filename	Filename, as a C-string.
[out]	bits_per_value	Number of bits used to store a scalar value in the image file.

load_pnm()

CImg<T>& load_pnm

(

const char *const

filename

)

Load image from a PNM file.

Parameters

filename

Filename, as a C-string.

load_pfm()

CImg<T>& load_pfm

(

const char *const

filename

)

Load image from a PFM file.

Parameters

filename

Filename, as a C-string.

load_rgb()

CImg<T>& load_rgb	(	const char *const	filename,
		const unsigned int	dimw,
		const unsigned int	dimh = 1
	)

Load image from a RGB file.

Parameters

filename	Filename, as a C-string.
dimw	Width of the image buffer.
dimh	Height of the image buffer.

load_rgba()

CImg<T>& load_rgba	(	const char *const	filename,
		const unsigned int	dimw,
		const unsigned int	dimh = 1
	)

Load image from a RGBA file.

Parameters

filename	Filename, as a C-string.
dimw	Width of the image buffer.
dimh	Height of the image buffer.

load_tiff()

CImg<T>& load_tiff	(	const char *const	filename,
		const unsigned int	first_frame = 0,
		const unsigned int	last_frame = ~0U,
		const unsigned int	step_frame = 1,
		unsigned int *const	bits_per_value = 0,
		float *const	voxel_size = 0,
		CImg< charT > *const	description = 0
	)

Load image from a TIFF file.

Parameters

	filename	Filename, as a C-string.
	first_frame	First frame to read (for multi-pages tiff).
	last_frame	Last frame to read (for multi-pages tiff).
	step_frame	Step value of frame reading.
[out]	bits_per_value	Number of bits used to store a scalar value in the image file.
[out]	voxel_size	Voxel size, as stored in the filename.
[out]	description	Description, as stored in the filename.

Note

• libtiff support is enabled by defining the precompilation directive cimg_use_tiff.
• When libtiff is enabled, 2D and 3D (multipage) several channel per pixel are supported for char,uchar,short,ushort,float and double pixel types.
• If cimg_use_tiff is not defined at compile time the function uses CImg<T>& load_other(const char*).

load_minc2()

CImg<T>& load_minc2

(

const char *const

filename

)

Load image from a MINC2 file.

Parameters

filename

Filename, as a C-string.

load_analyze()

CImg<T>& load_analyze	(	const char *const	filename,
		float *const	voxel_size = 0
	)

Load image from an ANALYZE7.5/NIFTI file.

Parameters

	filename	Filename, as a C-string.
[out]	voxel_size	Pointer to the three voxel sizes read from the file.

load_cimg() [1/2]

CImg<T>& load_cimg	(	const char *const	filename,
		const char	axis = 'z',
		const float	align = 0
	)

Load image from a .cimg[z] file.

Parameters

filename	Filename, as a C-string.
axis	Appending axis, if file contains multiple images. Can be { 'x' | 'y' | 'z' | 'c' }.
align	Appending alignment.

load_cimg() [2/2]

CImg<T>& load_cimg	(	const char *const	filename,
		const unsigned int	n0,
		const unsigned int	n1,
		const unsigned int	x0,
		const unsigned int	y0,
		const unsigned int	z0,
		const unsigned int	c0,
		const unsigned int	x1,
		const unsigned int	y1,
		const unsigned int	z1,
		const unsigned int	c1,
		const char	axis = 'z',
		const float	align = 0
	)

Load sub-images of a .cimg file.

Parameters

filename	Filename, as a C-string.
n0	Starting frame.
n1	Ending frame (~0U for max).
x0	X-coordinate of the starting sub-image vertex.
y0	Y-coordinate of the starting sub-image vertex.
z0	Z-coordinate of the starting sub-image vertex.
c0	C-coordinate of the starting sub-image vertex.
x1	X-coordinate of the ending sub-image vertex (~0U for max).
y1	Y-coordinate of the ending sub-image vertex (~0U for max).
z1	Z-coordinate of the ending sub-image vertex (~0U for max).
c1	C-coordinate of the ending sub-image vertex (~0U for max).
axis	Appending axis, if file contains multiple images. Can be { 'x' | 'y' | 'z' | 'c' }.
align	Appending alignment.

load_inr()

CImg<T>& load_inr	(	const char *const	filename,
		float *const	voxel_size = 0
	)

Load image from an INRIMAGE-4 file.

Parameters

	filename	Filename, as a C-string.
[out]	voxel_size	Pointer to the three voxel sizes read from the file.

load_exr()

CImg<T>& load_exr

(

const char *const

filename

)

Load image from a EXR file.

Parameters

filename

Filename, as a C-string.

load_pandore()

CImg<T>& load_pandore

(

const char *const

filename

)

Load image from a PANDORE-5 file.

Parameters

filename

Filename, as a C-string.

load_parrec()

CImg<T>& load_parrec	(	const char *const	filename,
		const char	axis = 'c',
		const float	align = 0
	)

Load image from a PAR-REC (Philips) file.

Parameters

filename	Filename, as a C-string.
axis	Appending axis, if file contains multiple images. Can be { 'x' | 'y' | 'z' | 'c' }.
align	Appending alignment.

load_raw()

CImg<T>& load_raw	(	const char *const	filename,
		const unsigned int	size_x = 0,
		const unsigned int	size_y = 1,
		const unsigned int	size_z = 1,
		const unsigned int	size_c = 1,
		const bool	is_multiplexed = false,
		const bool	invert_endianness = false,
		const ulongT	offset = 0
	)

Load image from a raw binary file.

Parameters

filename	Filename, as a C-string.
size_x	Width of the image buffer.
size_y	Height of the image buffer.
size_z	Depth of the image buffer.
size_c	Spectrum of the image buffer.
is_multiplexed	Tells if the image values are multiplexed along the C-axis.
invert_endianness	Tells if the endianness of the image buffer must be inverted.
offset	Starting offset of the read in the specified file.

load_yuv()

CImg<T>& load_yuv	(	const char *const	filename,
		const unsigned int	size_x,
		const unsigned int	size_y = 1,
		const unsigned int	chroma_subsampling = 444,
		const unsigned int	first_frame = 0,
		const unsigned int	last_frame = ~0U,
		const unsigned int	step_frame = 1,
		const bool	yuv2rgb = true,
		const char	axis = 'z'
	)

Load image sequence from a YUV file.

Parameters

filename	Filename, as a C-string.
size_x	Width of the frames.
size_y	Height of the frames.
chroma_subsampling	Type of chroma subsampling. Can be { 420 | 422 | 444 }.
first_frame	Index of the first frame to read.
last_frame	Index of the last frame to read.
step_frame	Step value for frame reading.
yuv2rgb	Tells if the YUV to RGB transform must be applied.
axis	Appending axis, if file contains multiple images. Can be { 'x' | 'y' | 'z' | 'c' }.

load_off()

CImg<T>& load_off	(	CImgList< tf > &	primitives,
		CImgList< tc > &	colors,
		const char *const	filename
	)

Load 3D object from a .OFF file.

Parameters

[out]	primitives	Primitives data of the 3D object.
[out]	colors	Colors data of the 3D object.
	filename	Filename, as a C-string.

load_video()

CImg<T>& load_video	(	const char *const	filename,
		const unsigned int	first_frame = 0,
		const unsigned int	last_frame = ~0U,
		const unsigned int	step_frame = 1,
		const char	axis = 'z',
		const float	align = 0
	)

Load image sequence from a video file, using OpenCV library.

Parameters

filename	Filename, as a C-string.
first_frame	Index of the first frame to read.
last_frame	Index of the last frame to read.
step_frame	Step value for frame reading.
axis	Alignment axis.
align	Appending alignment.

load_ffmpeg_external()

CImg<T>& load_ffmpeg_external	(	const char *const	filename,
		const char	axis = 'z',
		const float	align = 0
	)

Load image sequence using FFMPEG's external tool 'ffmpeg'.

Parameters

filename	Filename, as a C-string.
axis	Appending axis, if file contains multiple images. Can be { 'x' | 'y' | 'z' | 'c' }.
align	Appending alignment.

load_gif_external()

CImg<T>& load_gif_external	(	const char *const	filename,
		const char	axis = 'z',
		const float	align = 0
	)

Load gif file, using Imagemagick or GraphicsMagicks's external tools.

Parameters

filename	Filename, as a C-string.
axis	Appending axis, if file contains multiple images. Can be { 'x' | 'y' | 'z' | 'c' }.
align	Appending alignment.

load_heif()

CImg<T>& load_heif

(

const char *const

filename

)

Load image from a HEIC file.

Parameters

filename

Filename, as a C-string.

load_graphicsmagick_external()

CImg<T>& load_graphicsmagick_external

(

const char *const

filename

)

Load image using GraphicsMagick's external tool 'gm'.

Parameters

filename

Filename, as a C-string.

load_gzip_external()

CImg<T>& load_gzip_external

(

const char *const

filename

)

Load gzipped image file, using external tool 'gunzip'.

Parameters

filename

Filename, as a C-string.

load_imagemagick_external()

CImg<T>& load_imagemagick_external

(

const char *const

filename

)

Load image using ImageMagick's external tool 'convert'.

Parameters

filename

Filename, as a C-string.

load_medcon_external()

CImg<T>& load_medcon_external

(

const char *const

filename

)

Load image from a DICOM file, using Medcon's external tool 'medcon'.

Parameters

filename

Filename, as a C-string.

load_pdf_external()

CImg<T>& load_pdf_external	(	const char *const	filename,
		const unsigned int	resolution = 400
	)

Load image from a .pdf file.

Parameters

filename	Filename, as a C-string.
resolution	Image resolution.

load_dcraw_external()

CImg<T>& load_dcraw_external

(

const char *const

filename

)

Load image from a RAW Color Camera file, using external tool 'dcraw'.

Parameters

filename

Filename, as a C-string.

load_camera()

CImg<T>& load_camera	(	const unsigned int	camera_index = 0,
		const unsigned int	capture_width = 0,
		const unsigned int	capture_height = 0,
		const unsigned int	skip_frames = 0,
		const bool	release_camera = true
	)

Load image from a camera stream, using OpenCV.

Parameters

index	Index of the camera to capture images from (from 0 to 63).
capture_width	Width of the desired image ('0' stands for default value).
capture_height	Height of the desired image ('0' stands for default value).
skip_frames	Number of frames to skip before the capture.
release_camera	Tells if the camera resource must be released at the end of the method.

load_other()

CImg<T>& load_other

(

const char *const

filename

)

Load image using various non-native ways.

Parameters

filename

Filename, as a C-string.

print()

const CImg<T>& print	(	const char *const	title = 0,
		const bool	display_stats = true
	)		const

Display information about the image data.

Parameters

title	Name for the considered image.
display_stats	Tells to compute and display image statistics.

display() [1/3]

const CImg<T>& display

(

CImgDisplay &

disp

)

const

Display image into a CImgDisplay window.

Parameters

disp	Display window.

display() [2/3]

const CImg<T>& display	(	CImgDisplay &	disp,
		const bool	display_info,
		unsigned int *const	XYZ = 0,
		const bool	exit_on_anykey = false
	)		const

Display image into a CImgDisplay window, in an interactive way.

Parameters

	disp	Display window.
	display_info	Tells if image information are displayed on the standard output.
[in,out]	XYZ	Contains the XYZ coordinates at start / exit of the function.
	exit_on_anykey	Exit function when any key is pressed.

display() [3/3]

const CImg<T>& display	(	const char *const	title = 0,
		const bool	display_info = true,
		unsigned int *const	XYZ = 0,
		const bool	exit_on_anykey = false
	)		const

Display image into an interactive window.

Parameters

	title	Window title
	display_info	Tells if image information are displayed on the standard output.
[in,out]	XYZ	Contains the XYZ coordinates at start / exit of the function.
	exit_on_anykey	Exit function when any key is pressed.

display_object3d()

const CImg<T>& display_object3d	(	CImgDisplay &	disp,
		const CImg< tp > &	vertices,
		const CImgList< tf > &	primitives,
		const CImgList< tc > &	colors,
		const to &	opacities,
		const bool	centering = true,
		const int	render_static = 4,
		const int	render_motion = 1,
		const bool	is_double_sided = true,
		const float	focale = 700,
		const float	light_x = 0,
		const float	light_y = 0,
		const float	light_z = -5e8f,
		const float	specular_lightness = 0.2f,
		const float	specular_shininess = 0.1f,
		const bool	display_axes = true,
		float *const	pose_matrix = 0,
		const bool	exit_on_anykey = false
	)		const

Display object 3D in an interactive window.

Parameters

disp	Display window.
vertices	Vertices data of the 3D object.
primitives	Primitives data of the 3D object.
colors	Colors data of the 3D object.
opacities	Opacities data of the 3D object.
centering	Tells if the 3D object must be centered for the display.
render_static	Rendering mode.
render_motion	Rendering mode, when the 3D object is moved.
is_double_sided	Tells if the object primitives are double-sided.
focale	Focale
light_x	X-coordinate of the light source.
light_y	Y-coordinate of the light source.
light_z	Z-coordinate of the light source.
specular_lightness	Amount of specular light.
specular_shininess	Shininess of the object material.
display_axes	Tells if the 3D axes are displayed.
pose_matrix	Pointer to 12 values, defining a 3D pose (as a 4x3 matrix).
exit_on_anykey	Exit function when any key is pressed.

display_graph()

const CImg<T>& display_graph	(	CImgDisplay &	disp,
		const unsigned int	plot_type = 1,
		const unsigned int	vertex_type = 1,
		const char *const	labelx = 0,
		const double	xmin = 0,
		const double	xmax = 0,
		const char *const	labely = 0,
		const double	ymin = 0,
		const double	ymax = 0,
		const bool	exit_on_anykey = false
	)		const

Display 1D graph in an interactive window.

Parameters

disp	Display window.
plot_type	Plot type. Can be { 0=points | 1=segments | 2=splines | 3=bars }.
vertex_type	Vertex type.
labelx	Title for the horizontal axis, as a C-string.
xmin	Minimum value along the X-axis.
xmax	Maximum value along the X-axis.
labely	Title for the vertical axis, as a C-string.
ymin	Minimum value along the X-axis.
ymax	Maximum value along the X-axis.
exit_on_anykey	Exit function when any key is pressed.

save()

const CImg<T>& save	(	const char *const	filename,
		const int	number = -1,
		const unsigned int	digits = 6
	)		const

Save image as a file.

Parameters

filename	Filename, as a C-string.
number	When positive, represents an index added to the filename. Otherwise, no number is added.
digits	Number of digits used for adding the number to the filename.

Note

• The used file format is defined by the file extension in the filename filename.
• Parameter number can be used to add a 6-digit number to the filename before saving.

save_ascii()

const CImg<T>& save_ascii

(

const char *const

filename

)

const

Save image as an ascii file.

Parameters

filename

Filename, as a C-string.

save_cpp()

const CImg<T>& save_cpp

(

const char *const

filename

)

const

Save image as a .cpp source file.

Parameters

filename

Filename, as a C-string.

save_dlm()

const CImg<T>& save_dlm

(

const char *const

filename

)

const

Save image as a DLM file.

Parameters

filename

Filename, as a C-string.

save_bmp()

const CImg<T>& save_bmp

(

const char *const

filename

)

const

Save image as a BMP file.

Parameters

filename

Filename, as a C-string.

save_jpeg()

const CImg<T>& save_jpeg	(	const char *const	filename,
		const unsigned int	quality = 100
	)		const

Save image as a JPEG file.

Parameters

filename	Filename, as a C-string.
quality	Image quality (in %)

save_magick()

const CImg<T>& save_magick	(	const char *const	filename,
		const unsigned int	bytes_per_pixel = 0
	)		const

Save image, using built-in ImageMagick++ library.

Parameters

filename	Filename, as a C-string.
bytes_per_pixel	Force the number of bytes per pixel for the saving, when possible.

save_png()

const CImg<T>& save_png	(	const char *const	filename,
		const unsigned int	bytes_per_pixel = 0
	)		const

Save image as a PNG file.

Parameters

filename	Filename, as a C-string.
bytes_per_pixel	Force the number of bytes per pixels for the saving, when possible.

save_pnm()

const CImg<T>& save_pnm	(	const char *const	filename,
		const unsigned int	bytes_per_pixel = 0
	)		const

Save image as a PNM file.

Parameters

filename	Filename, as a C-string.
bytes_per_pixel	Force the number of bytes per pixels for the saving.

save_pnk()

const CImg<T>& save_pnk

(

const char *const

filename

)

const

Save image as a PNK file.

Parameters

filename

Filename, as a C-string.

save_pfm()

const CImg<T>& save_pfm

(

const char *const

filename

)

const

Save image as a PFM file.

Parameters

filename

Filename, as a C-string.

save_rgb()

const CImg<T>& save_rgb

(

const char *const

filename

)

const

Save image as a RGB file.

Parameters

filename

Filename, as a C-string.

save_rgba()

const CImg<T>& save_rgba

(

const char *const

filename

)

const

Save image as a RGBA file.

Parameters

filename

Filename, as a C-string.

save_tiff()

const CImg<T>& save_tiff	(	const char *const	filename,
		const unsigned int	compression_type = 0,
		const float *const	voxel_size = 0,
		const char *const	description = 0,
		const bool	use_bigtiff = true
	)		const

Save image as a TIFF file.

Parameters

	filename	Filename, as a C-string.
	compression_type	Type of data compression. Can be { 0=None | 1=LZW | 2=JPEG }.
[out]	voxel_size	Voxel size, to be stored in the filename.
[out]	description	Description, to be stored in the filename.
	use_bigtiff	Allow to save big tiff files (>4Gb).

Note

• libtiff support is enabled by defining the precompilation directive cimg_use_tiff.
• When libtiff is enabled, 2D and 3D (multipage) several channel per pixel are supported for char,uchar,short,ushort,float and double pixel types.
• If cimg_use_tiff is not defined at compile time the function uses CImg<T>&save_other(const char*).

save_minc2()

const CImg<T>& save_minc2	(	const char *const	filename,
		const char *const	imitate_file = 0
	)		const

Save image as a MINC2 file.

Parameters

filename	Filename, as a C-string.
imitate_file	If non-zero, reference filename, as a C-string, to borrow header from.

save_analyze()

const CImg<T>& save_analyze	(	const char *const	filename,
		const float *const	voxel_size = 0
	)		const

Save image as an ANALYZE7.5 or NIFTI file.

Parameters

filename	Filename, as a C-string.
voxel_size	Pointer to 3 consecutive values that tell about the voxel sizes along the X,Y and Z dimensions.

save_cimg() [1/2]

const CImg<T>& save_cimg	(	const char *const	filename,
		const bool	is_compressed = false
	)		const

Save image as a .cimg file.

Parameters

filename	Filename, as a C-string.
is_compressed	Tells if the file contains compressed image data.

save_cimg() [2/2]

const CImg<T>& save_cimg	(	const char *const	filename,
		const unsigned int	n0,
		const unsigned int	x0,
		const unsigned int	y0,
		const unsigned int	z0,
		const unsigned int	c0
	)		const

Save image as a sub-image into an existing .cimg file.

Parameters

filename	Filename, as a C-string.
n0	Index of the image inside the file.
x0	X-coordinate of the sub-image location.
y0	Y-coordinate of the sub-image location.
z0	Z-coordinate of the sub-image location.
c0	C-coordinate of the sub-image location.

save_empty_cimg() [1/2]

static void save_empty_cimg ( const char *const  filename, const unsigned int  dx, const unsigned int  dy = 1, const unsigned int  dz = 1, const unsigned int  dc = 1  )

static

Save blank image as a .cimg file.

Parameters

filename	Filename, as a C-string.
dx	Width of the image.
dy	Height of the image.
dz	Depth of the image.
dc	Number of channels of the image.

Note

• All pixel values of the saved image are set to 0.
• Use this method to save large images without having to instantiate and allocate them.

save_empty_cimg() [2/2]

static void save_empty_cimg ( std::FILE *const  file, const unsigned int  dx, const unsigned int  dy = 1, const unsigned int  dz = 1, const unsigned int  dc = 1  )

static

Save blank image as a .cimg file [overloading].

Same as save_empty_cimg(const char *,unsigned int,unsigned int,unsigned int,unsigned int) with a file stream argument instead of a filename string.

save_inr()

const CImg<T>& save_inr	(	const char *const	filename,
		const float *const	voxel_size = 0
	)		const

Save image as an INRIMAGE-4 file.

Parameters

filename	Filename, as a C-string.
voxel_size	Pointer to 3 values specifying the voxel sizes along the X,Y and Z dimensions.

save_exr()

const CImg<T>& save_exr

(

const char *const

filename

)

const

Save image as an OpenEXR file.

Parameters

filename

Filename, as a C-string.

Note

The OpenEXR file format is described here.

save_pandore() [1/2]

const CImg<T>& save_pandore	(	const char *const	filename,
		const unsigned int	colorspace = 0
	)		const

Save image as a Pandore-5 file.

Parameters

filename	Filename, as a C-string.
colorspace	Colorspace data field in output file (see Pandore file specifications for more information).

save_pandore() [2/2]

const CImg<T>& save_pandore	(	std::FILE *const	file,
		const unsigned int	colorspace = 0
	)		const

Save image as a Pandore-5 file [overloading].

Same as save_pandore(const char *,unsigned int) const with a file stream argument instead of a filename string.

save_raw() [1/2]

const CImg<T>& save_raw	(	const char *const	filename,
		const bool	is_multiplexed = false
	)		const

Save image as a raw data file.

Parameters

filename	Filename, as a C-string.
is_multiplexed	Tells if the image channels are stored in a multiplexed way (true) or not (false).

Note

The .raw format does not store the image dimensions in the output file, so you have to keep track of them somewhere to be able to read the file correctly afterwards.

save_raw() [2/2]

const CImg<T>& save_raw	(	std::FILE *const	file,
		const bool	is_multiplexed = false
	)		const

Save image as a raw data file [overloading].

Same as save_raw(const char *,bool) const with a file stream argument instead of a filename string.

save_yuv() [1/2]

const CImg<T>& save_yuv	(	const char *const	filename,
		const unsigned int	chroma_subsampling = 444,
		const bool	is_rgb = true
	)		const

Save image as a .yuv video file.

Parameters

filename	Filename, as a C-string.
chroma_subsampling	Type of chroma subsampling. Can be { 420 | 422 | 444 }.
is_rgb	Tells if pixel values of the instance image are RGB-coded (true) or YUV-coded (false).

Note

Each slice of the instance image is considered to be a single frame of the output video file.

save_yuv() [2/2]

const CImg<T>& save_yuv	(	std::FILE *const	file,
		const unsigned int	chroma_subsampling = 444,
		const bool	is_rgb = true
	)		const

Save image as a .yuv video file [overloading].

Same as save_yuv(const char*,const unsigned int,const bool) const with a file stream argument instead of a filename string.

save_off() [1/2]

const CImg<T>& save_off	(	const CImgList< tf > &	primitives,
		const CImgList< tc > &	colors,
		const char *const	filename
	)		const

Save 3D object as an Object File Format (.off) file.

Parameters

filename	Filename, as a C-string.
primitives	List of 3D object primitives.
colors	List of 3D object colors.

Note

• Instance image contains the vertices data of the 3D object.
• Textured, transparent or sphere-shaped primitives cannot be managed by the .off file format. Such primitives will be lost or simplified during file saving.
• The .off file format is described here.

save_off() [2/2]

const CImg<T>& save_off	(	const CImgList< tf > &	primitives,
		const CImgList< tc > &	colors,
		std::FILE *const	file
	)		const

Save 3D object as an Object File Format (.off) file [overloading].

Same as save_off(const CImgList<tf>&,const CImgList<tc>&,const char*) const with a file stream argument instead of a filename string.

save_video()

const CImg<T>& save_video	(	const char *const	filename,
		const unsigned int	fps = 25,
		const char *	codec = 0,
		const bool	keep_open = false
	)		const

Save volumetric image as a video (using the OpenCV library when available).

Parameters

filename	Filename to write data to.
fps	Number of frames per second.
codec	Type of compression (See http://www.fourcc.org/codecs.php to see available codecs).
keep_open	Tells if the video writer associated to the specified filename must be kept open or not (to allow frames to be added in the same file afterwards).

save_ffmpeg_external()

const CImg<T>& save_ffmpeg_external	(	const char *const	filename,
		const unsigned int	fps = 25,
		const char *const	codec = 0,
		const unsigned int	bitrate = 2048
	)		const

Save volumetric image as a video, using ffmpeg external binary.

Parameters

filename	Filename, as a C-string.
fps	Video framerate.
codec	Video codec, as a C-string.
bitrate	Video bitrate.

Note

• Each slice of the instance image is considered to be a single frame of the output video file.
• This method uses ffmpeg, an external executable binary provided by FFmpeg. It must be installed for the method to succeed.

save_gzip_external()

const CImg<T>& save_gzip_external

(

const char *const

filename

)

const

Save image using gzip external binary.

Parameters

filename

Filename, as a C-string.

Note

This method uses gzip, an external executable binary provided by gzip. It must be installed for the method to succeed.

save_graphicsmagick_external()

const CImg<T>& save_graphicsmagick_external	(	const char *const	filename,
		const unsigned int	quality = 100
	)		const

Save image using GraphicsMagick's external binary.

Parameters

filename	Filename, as a C-string.
quality	Image quality (expressed in percent), when the file format supports it.

Note

This method uses gm, an external executable binary provided by GraphicsMagick. It must be installed for the method to succeed.

save_imagemagick_external()

const CImg<T>& save_imagemagick_external	(	const char *const	filename,
		const unsigned int	quality = 100
	)		const

Save image using ImageMagick's external binary.

Parameters

filename	Filename, as a C-string.
quality	Image quality (expressed in percent), when the file format supports it.

Note

This method uses convert, an external executable binary provided by ImageMagick. It must be installed for the method to succeed.

save_medcon_external()

const CImg<T>& save_medcon_external

(

const char *const

filename

)

const

Save image as a Dicom file.

Parameters

filename

Filename, as a C-string.

Note

This method uses medcon, an external executable binary provided by (X)Medcon. It must be installed for the method to succeed.

save_other()

const CImg<T>& save_other	(	const char *const	filename,
		const unsigned int	quality = 100
	)		const

Parameters

filename	Filename, as a C-string.
quality	Image quality (expressed in percent), when the file format supports it.

Note

• The filename extension tells about the desired file format.
• This method tries to save the instance image as a file, using external tools from ImageMagick or GraphicsMagick. At least one of these tool must be installed for the method to succeed.
• It is recommended to use the generic method save(const char*, int) const instead, as it can handle some file formats natively.

get_serialize()

CImg<ucharT> get_serialize	(	const bool	is_compressed = false,
		const unsigned int	header_size = 0
	)		const

Serialize a CImg<T> instance into a raw CImg<unsigned char> buffer.

Parameters

is_compressed	tells if zlib compression must be used for serialization (this requires 'cimg_use_zlib' been enabled).
header_size	Reserve empty bytes as a starting header.

Member Data Documentation

const_iterator

const typedef T* const_iterator

Simple const iterator type, to loop through each pixel value of a const image instance.

Note

• The CImg<T>::const_iterator type is defined to be a const T*.
• You will seldom have to use iterators in CImg, most classical operations being achieved (often in a faster way) using methods of CImg<T>.

Example

const CImg<float> img("reference.jpg");                                    // Load image from file
float sum = 0;
// Compute sum of all pixel values, with a CImg iterator.
for (CImg<float>::iterator it = img.begin(), it<img.end(); ++it) sum+=*it;
const float sum2 = img.sum();                                              // Do the same with a built-in method