Laplace Filters

Laplace image filters. More...

Functions
SIMD_API void	SimdLaplace (const uint8_t *src, size_t srcStride, size_t width, size_t height, uint8_t *dst, size_t dstStride)
	Calculates Laplace's filter. More...
SIMD_API void	SimdLaplaceAbs (const uint8_t *src, size_t srcStride, size_t width, size_t height, uint8_t *dst, size_t dstStride)
	Calculates absolute value of Laplace's filter. More...
template<template< class > class A>
SIMD_INLINE void	Laplace (const View< A > &src, View< A > &dst)
	Calculates Laplace's filter. More...
template<template< class > class A>
SIMD_INLINE void	LaplaceAbs (const View< A > &src, View< A > &dst)
	Calculates absolute value of Laplace's filter. More...

Detailed Description

Laplace image filters.

Function Documentation

SimdLaplace()

void SimdLaplace	(	const uint8_t *	src,
		size_t	srcStride,
		size_t	width,
		size_t	height,
		uint8_t *	dst,
		size_t	dstStride
	)

Calculates Laplace's filter.

All images must have the same width and height. Input image must has 8-bit gray format, output image must has 16-bit integer format.

For every point:

dst[x, y] =
    - src[x-1, y-1] -   src[x, y-1] - src[x+1, y-1]
    - src[x-1, y]   + 8*src[x, y]   - src[x+1, y]
    - src[x-1, y+1] -   src[x, y+1] - src[x+1, y+1].

Note

This function has a C++ wrappers: Simd::Laplace(const View<A>& src, View<A>& dst).

Parameters

[in]	src	- a pointer to pixels data of the input image.
[in]	srcStride	- a row size of the input image.
[in]	width	- an image width.
[in]	height	- an image height.
[out]	dst	- a pointer to pixels data of the output image.
[in]	dstStride	- a row size of the output image (in bytes).

SimdLaplaceAbs()

void SimdLaplaceAbs	(	const uint8_t *	src,
		size_t	srcStride,
		size_t	width,
		size_t	height,
		uint8_t *	dst,
		size_t	dstStride
	)

Calculates absolute value of Laplace's filter.

All images must have the same width and height. Input image must has 8-bit gray format, output image must has 16-bit integer format.

For every point:

dst[x, y] = abs(
    - src[x-1, y-1] -   src[x, y-1] - src[x+1, y-1]
    - src[x-1, y]   + 8*src[x, y]   - src[x+1, y]
    - src[x-1, y+1] -   src[x, y+1] - src[x+1, y+1]).

Note

This function has a C++ wrappers: Simd::LaplaceAbs(const View<A>& src, View<A>& dst).

Parameters

[in]	src	- a pointer to pixels data of the input image.
[in]	srcStride	- a row size of the input image.
[in]	width	- an image width.
[in]	height	- an image height.
[out]	dst	- a pointer to pixels data of the output image.
[in]	dstStride	- a row size of the output image (in bytes).

Laplace()

void Laplace	(	const View< A > &	src,
		View< A > &	dst
	)

Calculates Laplace's filter.

All images must have the same width and height. Input image must has 8-bit gray format, output image must has 16-bit integer format.

For every point:

dst[x, y] =
    - src[x-1, y-1] -   src[x, y-1] - src[x+1, y-1]
    - src[x-1, y]   + 8*src[x, y]   - src[x+1, y]
    - src[x-1, y+1] -   src[x, y+1] - src[x+1, y+1].

Note

This function is a C++ wrapper for function SimdLaplace.

Parameters

[in]	src	- an input image.
[out]	dst	- an output image.

LaplaceAbs()

void LaplaceAbs	(	const View< A > &	src,
		View< A > &	dst
	)

Calculates absolute value of Laplace's filter.

All images must have the same width and height. Input image must has 8-bit gray format, output image must has 16-bit integer format.

For every point:

dst[x, y] = abs(
    - src[x-1, y-1] -   src[x, y-1] - src[x+1, y-1]
    - src[x-1, y]   + 8*src[x, y]   - src[x+1, y]
    - src[x-1, y+1] -   src[x, y+1] - src[x+1, y+1]).

Note

This function is a C++ wrapper for function SimdLaplaceAbs.

Parameters

[in]	src	- an input image.
[out]	dst	- an output image.