Max Filters

Max image filters. More...

Functions
SIMD_API void	SimdMaxFilterSquare3x3 (const uint8_t *src, size_t srcStride, size_t width, size_t height, size_t channelCount, uint8_t *dst, size_t dstStride, int threshold)
	Performs thresholded 3x3 square maximum filtering of an 8-bit interleaved image. More...
SIMD_API void	SimdMaxFilterSquare5x5 (const uint8_t *src, size_t srcStride, size_t width, size_t height, size_t channelCount, uint8_t *dst, size_t dstStride, int threshold)
	Performs thresholded 5x5 square maximum filtering of an 8-bit interleaved image. More...
template<template< class > class A>
SIMD_INLINE void	MaxFilterSquare3x3 (const View< A > &src, View< A > &dst, int threshold=1)
	Performs max filtration of input image (filter window is a square 3x3). More...
template<template< class > class A>
SIMD_INLINE void	MaxFilterSquare5x5 (const View< A > &src, View< A > &dst, int threshold=1)
	Performs max filtration of input image (filter window is a square 5x5). More...

Detailed Description

Max image filters.

Function Documentation

SimdMaxFilterSquare3x3()

void SimdMaxFilterSquare3x3	(	const uint8_t *	src,
		size_t	srcStride,
		size_t	width,
		size_t	height,
		size_t	channelCount,
		uint8_t *	dst,
		size_t	dstStride,
		int	threshold
	)

Performs thresholded 3x3 square maximum filtering of an 8-bit interleaved image.

The filter is applied independently to every channel. Border pixels are handled by nearest-pixel replication. If threshold <= 1, dst receives the maximum value in the 3x3 window. Otherwise dst receives this maximum only when it occurs at least threshold times in the window; if not, dst receives the center pixel.

Note

This function has a C++ wrapper: Simd::MaxFilterSquare3x3(const View<A>& src, View<A>& dst).

Parameters

[in]	src	- a pointer to pixels data of original input image.
[in]	srcStride	- a row size of src image (in bytes).
[in]	width	- an image width.
[in]	height	- an image height.
[in]	channelCount	- a number of 8-bit channels per pixel.
[out]	dst	- a pointer to pixels data of filtered output image.
[in]	dstStride	- a row size of dst image (in bytes).
[in]	threshold	- a minimal count of maximal values required to replace the center pixel.

SimdMaxFilterSquare5x5()

void SimdMaxFilterSquare5x5	(	const uint8_t *	src,
		size_t	srcStride,
		size_t	width,
		size_t	height,
		size_t	channelCount,
		uint8_t *	dst,
		size_t	dstStride,
		int	threshold
	)

Performs thresholded 5x5 square maximum filtering of an 8-bit interleaved image.

The filter is applied independently to every channel. Border pixels are handled by nearest-pixel replication. If threshold <= 1, dst receives the maximum value in the 5x5 window. Otherwise dst receives this maximum only when it occurs at least threshold times in the window; if not, dst receives the center pixel.

Note

This function has a C++ wrapper: Simd::MaxFilterSquare5x5(const View<A>& src, View<A>& dst).

Parameters

[in]	src	- a pointer to pixels data of original input image.
[in]	srcStride	- a row size of src image (in bytes).
[in]	width	- an image width.
[in]	height	- an image height.
[in]	channelCount	- a number of 8-bit channels per pixel.
[out]	dst	- a pointer to pixels data of filtered output image.
[in]	dstStride	- a row size of dst image (in bytes).
[in]	threshold	- a minimal count of maximal values required to replace the center pixel.

MaxFilterSquare3x3()

void MaxFilterSquare3x3	(	const View< A > &	src,
		View< A > &	dst,
		int	threshold = 1
	)

Performs max filtration of input image (filter window is a square 3x3).

All images must have the same width, height and format (8-bit gray, 16-bit UV, 24-bit BGR or 32-bit BGRA).

Note

This function is a C++ wrapper for function SimdMaxFilterSquare3x3.

Parameters

[in]	src	- an original input image.
[out]	dst	- a filtered output image.
[in]	threshold	- threshold value.

MaxFilterSquare5x5()

void MaxFilterSquare5x5	(	const View< A > &	src,
		View< A > &	dst,
		int	threshold = 1
	)

Performs max filtration of input image (filter window is a square 5x5).

All images must have the same width, height and format (8-bit gray, 16-bit UV, 24-bit BGR or 32-bit BGRA).

Note

This function is a C++ wrapper for function SimdMaxFilterSquare5x5.

Parameters

[in]	src	- an original input image.
[out]	dst	- a filtered output image.
[in]	threshold	- threshold value.