Estimation of various image statistic.
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SIMD_API void | SimdLaplaceAbsSum (const uint8_t *src, size_t stride, size_t width, size_t height, uint64_t *sum) |
| Calculates sum of absolute value of Laplace's filter. More...
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SIMD_API void | SimdGetStatistic (const uint8_t *src, size_t stride, size_t width, size_t height, uint8_t *min, uint8_t *max, uint8_t *average) |
| Finds minimal, maximal and average pixel values for given image. More...
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SIMD_API void | SimdGetMoments (const uint8_t *mask, size_t stride, size_t width, size_t height, uint8_t index, uint64_t *area, uint64_t *x, uint64_t *y, uint64_t *xx, uint64_t *xy, uint64_t *yy) |
| Calculate statistical characteristics (moments) of pixels with given index. More...
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SIMD_API void | SimdValueSum (const uint8_t *src, size_t stride, size_t width, size_t height, uint64_t *sum) |
| Gets sum of value of pixels for gray 8-bit image. More...
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SIMD_API void | SimdSquareSum (const uint8_t *src, size_t stride, size_t width, size_t height, uint64_t *sum) |
| Gets sum of squared value of pixels for gray 8-bit image . More...
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SIMD_API void | SimdCorrelationSum (const uint8_t *a, size_t aStride, const uint8_t *b, size_t bStride, size_t width, size_t height, uint64_t *sum) |
| Gets sum of pixel correlation for two gray 8-bit images. More...
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template<template< class > class A> |
SIMD_INLINE void | LaplaceAbsSum (const View< A > &src, uint64_t &sum) |
| Calculates sum of absolute value of Laplace's filter. More...
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template<template< class > class A> |
SIMD_INLINE void | GetStatistic (const View< A > &src, uint8_t &min, uint8_t &max, uint8_t &average) |
| Finds minimal, maximal and average pixel values for given image. More...
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template<template< class > class A> |
SIMD_INLINE void | GetMoments (const View< A > &mask, uint8_t index, uint64_t &area, uint64_t &x, uint64_t &y, uint64_t &xx, uint64_t &xy, uint64_t &yy) |
| Calculate statistical characteristics (moments) of pixels with given index. More...
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template<template< class > class A> |
SIMD_INLINE void | ValueSum (const View< A > &src, uint64_t &sum) |
| Gets sum of value of pixels for gray 8-bit image. More...
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template<template< class > class A> |
SIMD_INLINE void | SquareSum (const View< A > &src, uint64_t &sum) |
| Gets sum of squared value of pixels for gray 8-bit image. More...
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template<template< class > class A> |
SIMD_INLINE void | CorrelationSum (const View< A > &a, const View< A > &b, uint64_t &sum) |
| Gets sum of pixel correlation for two gray 8-bit images. More...
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Estimation of various image statistic.
void SimdLaplaceAbsSum |
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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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uint64_t * |
sum |
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) |
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Calculates sum of absolute value of Laplace's filter.
Input image must has 8-bit gray format.
For every point: sum += 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::LaplaceAbsSum(const View<A>& src, uint64_t & sum).
- 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] | sum | - a pointer to result sum. |
void SimdGetStatistic |
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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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uint8_t * |
min, |
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uint8_t * |
max, |
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uint8_t * |
average |
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) |
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Finds minimal, maximal and average pixel values for given image.
The image must has 8-bit gray format.
- Note
- This function has a C++ wrappers: Simd::GetStatistic(const View<A>& src, uint8_t & min, uint8_t & max, uint8_t & average).
- Parameters
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[in] | src | - a pointer to pixels data of the input image. |
[in] | stride | - a row size of the image. |
[in] | width | - an image width. |
[in] | height | - an image height. |
[out] | min | - a pointer to unsigned 8-bit integer value with found minimal pixel value. |
[out] | max | - a pointer to unsigned 8-bit integer value with found maximal pixel value. |
[out] | average | - a pointer to unsigned 8-bit integer value with found average pixel value. |
void SimdGetMoments |
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const uint8_t * |
mask, |
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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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uint8_t |
index, |
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uint64_t * |
area, |
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uint64_t * |
x, |
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uint64_t * |
y, |
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uint64_t * |
xx, |
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uint64_t * |
xy, |
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uint64_t * |
yy |
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) |
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Calculate statistical characteristics (moments) of pixels with given index.
The image must has 8-bit gray format.
For every point: if(mask[X, Y] == index)
{
area += 1.
x += X.
y += Y.
xx += X*X.
xy += X*Y.
yy += Y*Y.
}
- Note
- This function has a C++ wrappers: Simd::GetMoments(const View<A>& mask, uint8_t index, uint64_t & area, uint64_t & x, uint64_t & y, uint64_t & xx, uint64_t & xy, uint64_t & yy).
- Parameters
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[in] | mask | - a pointer to pixels data of the mask image. |
[in] | stride | - a row size of the mask image. |
[in] | width | - an image width. |
[in] | height | - an image height. |
[in] | index | - a mask index. |
[out] | area | - a pointer to unsigned 64-bit integer value with found area (number of pixels with given index). |
[out] | x | - a pointer to unsigned 64-bit integer value with found first-order moment x. |
[out] | y | - a pointer to unsigned 64-bit integer value with found first-order moment y. |
[out] | xx | - a pointer to unsigned 64-bit integer value with found second-order moment xx. |
[out] | xy | - a pointer to unsigned 64-bit integer value with found second-order moment xy. |
[out] | yy | - a pointer to unsigned 64-bit integer value with found second-order moment yy. |
void SimdValueSum |
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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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uint64_t * |
sum |
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) |
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Gets sum of value of pixels for gray 8-bit image.
- Note
- This function has a C++ wrappers: Simd::ValueSum(const View<A>& src, uint64_t & sum).
- Parameters
-
[in] | src | - a pointer to pixels data of the image. |
[in] | stride | - a row size of the image. |
[in] | width | - an image width. |
[in] | height | - an image height. |
[out] | sum | - the result sum. |
void SimdSquareSum |
( |
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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uint64_t * |
sum |
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) |
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Gets sum of squared value of pixels for gray 8-bit image .
- Note
- This function has a C++ wrappers: Simd::SquareSum(const View<A>& src, uint64_t & sum).
- Parameters
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[in] | src | - a pointer to pixels data of the image. |
[in] | stride | - a row size of the image. |
[in] | width | - an image width. |
[in] | height | - an image height. |
[out] | sum | - the result sum. |
void SimdCorrelationSum |
( |
const uint8_t * |
a, |
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size_t |
aStride, |
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const uint8_t * |
b, |
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size_t |
bStride, |
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size_t |
width, |
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size_t |
height, |
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uint64_t * |
sum |
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) |
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Gets sum of pixel correlation for two gray 8-bit images.
For all points: sum += a[i]*b[i];
All images must have the same width and height and 8-bit gray pixel format.
- Note
- This function has a C++ wrappers: Simd::CorrelationSum(const View<A> & a, const View<A> & b, uint64_t & sum).
- Parameters
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[in] | a | - a pointer to pixels data of the first image. |
[in] | aStride | - a row size of the first image. |
[in] | b | - a pointer to pixels data of the second image. |
[in] | bStride | - a row size of the second image. |
[in] | width | - an images width. |
[in] | height | - an images height. |
[out] | sum | - a pointer to result sum. |
void LaplaceAbsSum |
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const View< A > & |
src, |
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uint64_t & |
sum |
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) |
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Calculates sum of absolute value of Laplace's filter.
Input image must has 8-bit gray format.
For every point: sum += 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 SimdLaplaceAbsSum.
- Parameters
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[in] | src | - an input image. |
[out] | sum | - a result sum. |
void GetStatistic |
( |
const View< A > & |
src, |
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uint8_t & |
min, |
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uint8_t & |
max, |
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uint8_t & |
average |
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) |
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Finds minimal, maximal and average pixel values for given image.
The image must has 8-bit gray format.
- Note
- This function is a C++ wrapper for function SimdGetStatistic.
- Parameters
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[in] | src | - an input image. |
[out] | min | - a reference to unsigned 8-bit integer value with found minimal pixel value. |
[out] | max | - a reference to unsigned 8-bit integer value with found maximal pixel value. |
[out] | average | - a reference to unsigned 8-bit integer value with found average pixel value. |
void GetMoments |
( |
const View< A > & |
mask, |
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uint8_t |
index, |
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uint64_t & |
area, |
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uint64_t & |
x, |
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uint64_t & |
y, |
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uint64_t & |
xx, |
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uint64_t & |
xy, |
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uint64_t & |
yy |
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) |
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Calculate statistical characteristics (moments) of pixels with given index.
The image must has 8-bit gray format.
For every point: if(mask[X, Y] == index)
{
area += 1.
x += X.
y += Y.
xx += X*X.
xy += X*Y.
yy += Y*Y.
}
- Note
- This function is a C++ wrapper for function SimdGetMoments.
- Parameters
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[in] | mask | - a mask image. |
[in] | index | - a mask index. |
[out] | area | - a reference to unsigned 64-bit integer value with found area (number of pixels with given index). |
[out] | x | - a reference to unsigned 64-bit integer value with found first-order moment x. |
[out] | y | - a reference to unsigned 64-bit integer value with found first-order moment y. |
[out] | xx | - a reference to unsigned 64-bit integer value with found second-order moment xx. |
[out] | xy | - a reference to unsigned 64-bit integer value with found second-order moment xy. |
[out] | yy | - a reference to unsigned 64-bit integer value with found second-order moment yy. |
void ValueSum |
( |
const View< A > & |
src, |
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uint64_t & |
sum |
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) |
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Gets sum of value of pixels for gray 8-bit image.
- Note
- This function is a C++ wrapper for function SimdValueSum.
- Parameters
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[in] | src | - an input image. |
[out] | sum | - a result sum. |
void SquareSum |
( |
const View< A > & |
src, |
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uint64_t & |
sum |
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) |
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Gets sum of squared value of pixels for gray 8-bit image.
- Note
- This function is a C++ wrapper for function SimdSquareSum.
- Parameters
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[in] | src | - an input image. |
[out] | sum | - a result sum. |
void CorrelationSum |
( |
const View< A > & |
a, |
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const View< A > & |
b, |
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uint64_t & |
sum |
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) |
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Gets sum of pixel correlation for two gray 8-bit images.
For all points: sum += a[i]*b[i];
All images must have the same width and height and 8-bit gray pixel format.
- Note
- This function is a C++ wrapper for function SimdCorrelationSum.
- Parameters
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[in] | a | - a first image. |
[in] | b | - a second image. |
[out] | sum | - a result sum. |
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