Estimation of image statistic for separate columns.
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SIMD_API void | SimdGetColSums (const uint8_t *src, size_t stride, size_t width, size_t height, uint32_t *sums) |
| Calculate sums of columns for given 8-bit gray image. More...
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SIMD_API void | SimdGetAbsDxColSums (const uint8_t *src, size_t stride, size_t width, size_t height, uint32_t *sums) |
| Calculate sums of absolute derivate along x axis for columns for given 8-bit gray image. More...
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template<template< class > class A> |
SIMD_INLINE void | GetColSums (const View< A > &src, uint32_t *sums) |
| Calculate sums of columns for given 8-bit gray image. More...
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template<template< class > class A> |
SIMD_INLINE void | GetAbsDxColSums (const View< A > &src, uint32_t *sums) |
| Calculate sums of absolute derivate along x axis for columns for given 8-bit gray image. More...
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Estimation of image statistic for separate columns.
void SimdGetColSums |
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const uint8_t * |
src, |
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size_t |
stride, |
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size_t |
width, |
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size_t |
height, |
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uint32_t * |
sums |
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) |
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Calculate sums of columns for given 8-bit gray image.
For all columns:
for(y = 0; y < height; ++y)
sums[x] += src[x, y];
- Note
- This function has a C++ wrappers: Simd::GetColSums(const View<A>& src, uint32_t * sums).
- Parameters
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[in] | src | - a pointer to pixels data of the input image. |
[in] | stride | - a row size of the input image. |
[in] | width | - an image width. |
[in] | height | - an image height. |
[out] | sums | - a pointer to array of unsigned 32-bit integers result sums of columns. It length must be equal to image width. |
void SimdGetAbsDxColSums |
( |
const uint8_t * |
src, |
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size_t |
stride, |
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size_t |
width, |
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|
size_t |
height, |
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|
uint32_t * |
sums |
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) |
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Calculate sums of absolute derivate along x axis for columns for given 8-bit gray image.
For all columns except the last:
for(y = 0; y < height; ++y)
sums[y] += abs(src[x+1, y] - src[x, y]);
For the last column:
sums[width-1] = 0;
- Note
- This function has a C++ wrappers: Simd::GetAbsDxColSums(const View<A>& src, uint32_t * sums).
- Parameters
-
[in] | src | - a pointer to pixels data of the input image. |
[in] | stride | - a row size of the input image. |
[in] | width | - an image width. |
[in] | height | - an image height. |
[out] | sums | - a pointer to array of unsigned 32-bit integers result columns. It length must be equal to image width. |
void GetColSums |
( |
const View< A > & |
src, |
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uint32_t * |
sums |
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) |
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Calculate sums of columns for given 8-bit gray image.
For all columns:
for(y = 0; y < height; ++y)
sums[x] += src[x, y];
- Note
- This function is a C++ wrapper for function SimdGetColSums.
- Parameters
-
[in] | src | - an input image. |
[out] | sums | - a pointer to array of unsigned 32-bit integers result sums of columns. It length must be equal to image width. |
void GetAbsDxColSums |
( |
const View< A > & |
src, |
|
|
uint32_t * |
sums |
|
) |
| |
Calculate sums of absolute derivate along x axis for columns for given 8-bit gray image.
For all columns except the last:
for(y = 0; y < height; ++y)
sums[y] += abs(src[x+1, y] - src[x, y]);
For the last column:
sums[width-1] = 0;
- Note
- This function is a C++ wrapper for function SimdGetAbsDxColSums.
- Parameters
-
[in] | src | - an input image. |
[out] | sums | - a pointer to array of unsigned 32-bit integers result columns. It length must be equal to image width. |