vil_sobel_1x3.hxx File Reference

Apply sobel gradient filter to an image. More...

#include "vil_sobel_1x3.h"

Go to the source code of this file.

Macros
#define	VIL_SOBEL_1X3_INSTANTIATE(srcT, destT)

Functions
template<class srcT , class destT >
void	vil_sobel_1x3 (const vil_image_view< srcT > &src, vil_image_view< destT > &grad_ij)
	Apply Sobel 1x3 gradient filter to image. More...
template<class srcT , class destT >
void	vil_sobel_1x3 (const vil_image_view< srcT > &src, vil_image_view< destT > &grad_i, vil_image_view< destT > &grad_j)
	Apply Sobel 1x3 gradient filter to 2D image. More...
template<class srcT , class destT >
void	vil_sobel_1x3_1plane (const srcT *src, std::ptrdiff_t s_istep, std::ptrdiff_t s_jstep, destT *gi, std::ptrdiff_t gi_istep, std::ptrdiff_t gi_jstep, destT *gj, std::ptrdiff_t gj_istep, std::ptrdiff_t gj_jstep, unsigned ni, unsigned nj)
	Compute gradients of single plane of 2D data using 1x3 Sobel filters. More...

Detailed Description

Apply sobel gradient filter to an image.

Author

Tim Cootes

Definition in file vil_sobel_1x3.hxx.

Macro Definition Documentation

VIL_SOBEL_1X3_INSTANTIATE

#define VIL_SOBEL_1X3_INSTANTIATE	(		srcT,
			destT
	)

Value:

template void vil_sobel_1x3(const vil_image_view< srcT >& src, \
                            vil_image_view<destT >& grad_ij); \
template void vil_sobel_1x3(const vil_image_view< srcT >& src, \
                            vil_image_view<destT >& grad_i, \
                            vil_image_view<destT >& grad_j)

Definition at line 158 of file vil_sobel_1x3.hxx.

Function Documentation

vil_sobel_1x3() [1/2]

template<class srcT , class destT >

void vil_sobel_1x3	(	const vil_image_view< srcT > &	src,
		vil_image_view< destT > &	grad_ij
	)

Apply Sobel 1x3 gradient filter to image.

Compute gradients of an image using 1x3 Sobel filters.

dest has twice as many planes as src, with dest plane (2i) being the i-gradient of source plane i and dest plane (2i+1) being the j-gradient.

Definition at line 15 of file vil_sobel_1x3.hxx.

vil_sobel_1x3() [2/2]

template<class srcT , class destT >

void vil_sobel_1x3	(	const vil_image_view< srcT > &	src,
		vil_image_view< destT > &	grad_i,
		vil_image_view< destT > &	grad_j
	)

Apply Sobel 1x3 gradient filter to 2D image.

Compute gradients of an image using 1x3 Sobel filters.

Definition at line 35 of file vil_sobel_1x3.hxx.

vil_sobel_1x3_1plane()

template<class srcT , class destT >

void vil_sobel_1x3_1plane	(	const srcT *	src,
		std::ptrdiff_t	s_istep,
		std::ptrdiff_t	s_jstep,
		destT *	gi,
		std::ptrdiff_t	gi_istep,
		std::ptrdiff_t	gi_jstep,
		destT *	gj,
		std::ptrdiff_t	gj_istep,
		std::ptrdiff_t	gj_jstep,
		unsigned	ni,
		unsigned	nj
	)

Compute gradients of single plane of 2D data using 1x3 Sobel filters.

Computes both i and j gradients of an ni x nj plane of data 1 pixel border around grad images is set to zero

Definition at line 56 of file vil_sobel_1x3.hxx.