IntegralImageHandle< T > Struct Template Reference

#include <IntegralImage.h>

Inherited by IntegralImage< T >.

Public Member Functions
	IntegralImageHandle (const IntegralImageHandle< T > &src)
void	operator= (const IntegralImageHandle< T > &src)
void	Release ()
void	Resize (unsigned int width, unsigned int height)
	Resize (destructive) of buffer.
T &	operator() (int i, int j)
const T &	operator() (int i, int j) const
T	pixel_at (int x, int y) const
double	interpolated_value_at (double x, double y) const
	recover using interpolation integral-image value in x,y
template<class D >
void	Export (D *buf, int x0, int y0, int dst_width, int dst_height) const
template<class DataType >
void	ResampleAndExport (DataType *buf, double x0, double y0, double x1, double y1, int dst_width, int dst_height) const
template<class _S >
void	Build (const _S *src, unsigned int width, unsigned int height, long stride, bool extend=false)
	Build integral image from buffer.
void	Build (const ImageHandle &src, bool extend=false)
	Build the integral image using an ImageHandle object.

Public Attributes
T *	data
unsigned int	width
unsigned int	height

Detailed Description

template<class T>
struct IntegralImageHandle< T >

the integral image. The use of handle is required in order to remove an eventual pointer dereferencing during apply and improve performance.

Constructor & Destructor Documentation

template<class T>

IntegralImageHandle< T >::IntegralImageHandle ( const IntegralImageHandle< T > &  src )

inline

copy: only handle integral image can receive copy

Member Function Documentation

template<class T>

template<class D >

void IntegralImageHandle< T >::Export ( D *  buf, int  x0, int  y0, int  dst_width, int  dst_height  ) const

inline

convert the integral image in a buffer of the same size.

auxIntImage.Export(buf.Buffer(), 1,1, width, height);

Todo:

handle cropping better

template<class T>

T IntegralImageHandle< T >::pixel_at ( int  x, int  y  ) const

inline

convert the integral image in a buffer. The buffer must be width x height

Returns

pixel(x,y) = I(x,y) + I(x-1,y-1) - I(x,y-1) - I(x-1,y)

template<class T>

void IntegralImageHandle< T >::Release ( )

inline

Force the memory release

template<class T>

template<class DataType >

void IntegralImageHandle< T >::ResampleAndExport ( DataType *  buf, double  x0, double  y0, double  x1, double  y1, int  dst_width, int  dst_height  ) const

inline

Resample and export an integral image

Parameters

buf	an output buffer
x0,y0,x1,y1	a rectangle
dst_width,dst_height	size of buf buffer

Member Data Documentation

template<class T>

T* IntegralImageHandle< T >::data

the origin of integral image

template<class T>

unsigned int IntegralImageHandle< T >::width

Integral image geometry

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The documentation for this struct was generated from the following file:

• include/IntegralImage.h