Classes
struct	cvhalDFT
	Dummy structure storing DFT/DCT context. More...

Functions
int	hal_ni_dct2D (cvhalDFT context, const uchar src_data, size_t src_step, uchar *dst_data, size_t dst_step)

int	hal_ni_dctFree2D (cvhalDFT *context)

int	hal_ni_dctInit2D (cvhalDFT **context, int width, int height, int depth, int flags)

int	hal_ni_dft1D (cvhalDFT context, const uchar src, uchar *dst)

int	hal_ni_dft2D (cvhalDFT context, const uchar src_data, size_t src_step, uchar *dst_data, size_t dst_step)

int	hal_ni_dftFree1D (cvhalDFT *context)

int	hal_ni_dftFree2D (cvhalDFT *context)

int	hal_ni_dftInit1D (cvhalDFT *context, int len, int count, int depth, int flags, bool needBuffer)

int	hal_ni_dftInit2D (cvhalDFT **context, int width, int height, int depth, int src_channels, int dst_channels, int flags, int nonzero_rows)

int	hal_ni_minMaxIdx (const uchar src_data, size_t src_step, int width, int height, int depth, double minVal, double maxVal, int minIdx, int maxIdx, uchar mask)
	Finds the global minimum and maximum in an array. More...

Return codes
#define	CV_HAL_ERROR_OK 0

#define	CV_HAL_ERROR_NOT_IMPLEMENTED 1

#define	CV_HAL_ERROR_UNKNOWN -1

Data types
primitive types schar - signed 1 byte integer uchar - unsigned 1 byte integer short - signed 2 byte integer ushort - unsigned 2 byte integer int - signed 4 byte integer uint - unsigned 4 byte integer int64 - signed 8 byte integer uint64 - unsigned 8 byte integer
typedef uint32_t	uint

typedef signed char	schar

typedef unsigned char	uchar

typedef unsigned short	ushort

typedef int64_t	int64

typedef uint64_t	uint64

#define	CV_BIG_INT(n) n##LL

#define	CV_BIG_UINT(n) n##ULL

#define	CV_CN_MAX 512

#define	CV_CN_SHIFT 3

#define	CV_DEPTH_MAX (1 << CV_CN_SHIFT)

#define	CV_8U 0

#define	CV_8S 1

#define	CV_16U 2

#define	CV_16S 3

#define	CV_32S 4

#define	CV_32F 5

#define	CV_64F 6

#define	CV_USRTYPE1 7

#define	CV_MAT_DEPTH_MASK (CV_DEPTH_MAX - 1)

#define	CV_MAT_DEPTH(flags) ((flags) & CV_MAT_DEPTH_MASK)

#define	CV_MAKETYPE(depth, cn) (CV_MAT_DEPTH(depth) + (((cn)-1) << CV_CN_SHIFT))

#define	CV_MAKE_TYPE CV_MAKETYPE

#define	CV_8UC1 CV_MAKETYPE(CV_8U,1)

#define	CV_8UC2 CV_MAKETYPE(CV_8U,2)

#define	CV_8UC3 CV_MAKETYPE(CV_8U,3)

#define	CV_8UC4 CV_MAKETYPE(CV_8U,4)

#define	CV_8UC(n) CV_MAKETYPE(CV_8U,(n))

#define	CV_8SC1 CV_MAKETYPE(CV_8S,1)

#define	CV_8SC2 CV_MAKETYPE(CV_8S,2)

#define	CV_8SC3 CV_MAKETYPE(CV_8S,3)

#define	CV_8SC4 CV_MAKETYPE(CV_8S,4)

#define	CV_8SC(n) CV_MAKETYPE(CV_8S,(n))

#define	CV_16UC1 CV_MAKETYPE(CV_16U,1)

#define	CV_16UC2 CV_MAKETYPE(CV_16U,2)

#define	CV_16UC3 CV_MAKETYPE(CV_16U,3)

#define	CV_16UC4 CV_MAKETYPE(CV_16U,4)

#define	CV_16UC(n) CV_MAKETYPE(CV_16U,(n))

#define	CV_16SC1 CV_MAKETYPE(CV_16S,1)

#define	CV_16SC2 CV_MAKETYPE(CV_16S,2)

#define	CV_16SC3 CV_MAKETYPE(CV_16S,3)

#define	CV_16SC4 CV_MAKETYPE(CV_16S,4)

#define	CV_16SC(n) CV_MAKETYPE(CV_16S,(n))

#define	CV_32SC1 CV_MAKETYPE(CV_32S,1)

#define	CV_32SC2 CV_MAKETYPE(CV_32S,2)

#define	CV_32SC3 CV_MAKETYPE(CV_32S,3)

#define	CV_32SC4 CV_MAKETYPE(CV_32S,4)

#define	CV_32SC(n) CV_MAKETYPE(CV_32S,(n))

#define	CV_32FC1 CV_MAKETYPE(CV_32F,1)

#define	CV_32FC2 CV_MAKETYPE(CV_32F,2)

#define	CV_32FC3 CV_MAKETYPE(CV_32F,3)

#define	CV_32FC4 CV_MAKETYPE(CV_32F,4)

#define	CV_32FC(n) CV_MAKETYPE(CV_32F,(n))

#define	CV_64FC1 CV_MAKETYPE(CV_64F,1)

#define	CV_64FC2 CV_MAKETYPE(CV_64F,2)

#define	CV_64FC3 CV_MAKETYPE(CV_64F,3)

#define	CV_64FC4 CV_MAKETYPE(CV_64F,4)

#define	CV_64FC(n) CV_MAKETYPE(CV_64F,(n))

Comparison operation
See also cv::CmpTypes
#define	CV_HAL_CMP_EQ 0

#define	CV_HAL_CMP_GT 1

#define	CV_HAL_CMP_GE 2

#define	CV_HAL_CMP_LT 3

#define	CV_HAL_CMP_LE 4

#define	CV_HAL_CMP_NE 5

Border processing modes
See also cv::BorderTypes
#define	CV_HAL_BORDER_CONSTANT 0

#define	CV_HAL_BORDER_REPLICATE 1

#define	CV_HAL_BORDER_REFLECT 2

#define	CV_HAL_BORDER_WRAP 3

#define	CV_HAL_BORDER_REFLECT_101 4

#define	CV_HAL_BORDER_TRANSPARENT 5

#define	CV_HAL_BORDER_ISOLATED 16

DFT flags
#define	CV_HAL_DFT_INVERSE 1

#define	CV_HAL_DFT_SCALE 2

#define	CV_HAL_DFT_ROWS 4

#define	CV_HAL_DFT_COMPLEX_OUTPUT 16

#define	CV_HAL_DFT_REAL_OUTPUT 32

#define	CV_HAL_DFT_TWO_STAGE 64

#define	CV_HAL_DFT_STAGE_COLS 128

#define	CV_HAL_DFT_IS_CONTINUOUS 512

#define	CV_HAL_DFT_IS_INPLACE 1024

SVD flags
#define	CV_HAL_SVD_NO_UV 1

#define	CV_HAL_SVD_SHORT_UV 2

#define	CV_HAL_SVD_MODIFY_A 4

#define	CV_HAL_SVD_FULL_UV 8

Gemm flags
#define	CV_HAL_GEMM_1_T 1

#define	CV_HAL_GEMM_2_T 2

#define	CV_HAL_GEMM_3_T 4

Detailed Description

Note: Define your functions to override default implementations:
#undef hal_add8u
#define hal_add8u my_add8u

Macro Definition Documentation

◆ CV_16S

#define CV_16S 3

#include <opencv2/core/hal/interface.h>

Examples:: samples/cpp/edge.cpp, samples/cpp/laplace.cpp, samples/cpp/stitching_detailed.cpp, and samples/cpp/tutorial_code/ImgTrans/Sobel_Demo.cpp.

◆ CV_16SC

#define CV_16SC ( n ) CV_MAKETYPE(CV_16S,(n))

#include <opencv2/core/hal/interface.h>

◆ CV_16SC1

#define CV_16SC1 CV_MAKETYPE(CV_16S,1)

#include <opencv2/core/hal/interface.h>

◆ CV_16SC2

#define CV_16SC2 CV_MAKETYPE(CV_16S,2)

#include <opencv2/core/hal/interface.h>

◆ CV_16SC3

#define CV_16SC3 CV_MAKETYPE(CV_16S,3)

#include <opencv2/core/hal/interface.h>

◆ CV_16SC4

#define CV_16SC4 CV_MAKETYPE(CV_16S,4)

#include <opencv2/core/hal/interface.h>

◆ CV_16U

#define CV_16U 2

#include <opencv2/core/hal/interface.h>

◆ CV_16UC

#define CV_16UC ( n ) CV_MAKETYPE(CV_16U,(n))

#include <opencv2/core/hal/interface.h>

◆ CV_16UC1

#define CV_16UC1 CV_MAKETYPE(CV_16U,1)

#include <opencv2/core/hal/interface.h>

◆ CV_16UC2

#define CV_16UC2 CV_MAKETYPE(CV_16U,2)

#include <opencv2/core/hal/interface.h>

◆ CV_16UC3

#define CV_16UC3 CV_MAKETYPE(CV_16U,3)

#include <opencv2/core/hal/interface.h>

◆ CV_16UC4

#define CV_16UC4 CV_MAKETYPE(CV_16U,4)

#include <opencv2/core/hal/interface.h>

◆ CV_32F

#define CV_32F 5

#include <opencv2/core/hal/interface.h>

Examples:: samples/cpp/demhist.cpp, samples/cpp/fitellipse.cpp, samples/cpp/image_alignment.cpp, samples/cpp/kalman.cpp, samples/cpp/pca.cpp, samples/cpp/stitching_detailed.cpp, samples/cpp/train_HOG.cpp, samples/dnn/colorization.cpp, and samples/dnn/openpose.cpp.

◆ CV_32FC

#define CV_32FC ( n ) CV_MAKETYPE(CV_32F,(n))

#include <opencv2/core/hal/interface.h>

◆ CV_32FC1

#define CV_32FC1 CV_MAKETYPE(CV_32F,1)

#include <opencv2/core/hal/interface.h>

Examples:: samples/cpp/image_alignment.cpp, samples/cpp/train_HOG.cpp, samples/cpp/tutorial_code/Histograms_Matching/MatchTemplate_Demo.cpp, and samples/dnn/segmentation.cpp.

◆ CV_32FC2

#define CV_32FC2 CV_MAKETYPE(CV_32F,2)

#include <opencv2/core/hal/interface.h>

Examples:: samples/cpp/kmeans.cpp.

◆ CV_32FC3

#define CV_32FC3 CV_MAKETYPE(CV_32F,3)

#include <opencv2/core/hal/interface.h>

◆ CV_32FC4

#define CV_32FC4 CV_MAKETYPE(CV_32F,4)

#include <opencv2/core/hal/interface.h>

◆ CV_32S

#define CV_32S 4

#include <opencv2/core/hal/interface.h>

Examples:: samples/cpp/connected_components.cpp, samples/cpp/distrans.cpp, and samples/cpp/watershed.cpp.

◆ CV_32SC

#define CV_32SC ( n ) CV_MAKETYPE(CV_32S,(n))

#include <opencv2/core/hal/interface.h>

◆ CV_32SC1

#define CV_32SC1 CV_MAKETYPE(CV_32S,1)

#include <opencv2/core/hal/interface.h>

◆ CV_32SC2

#define CV_32SC2 CV_MAKETYPE(CV_32S,2)

#include <opencv2/core/hal/interface.h>

◆ CV_32SC3

#define CV_32SC3 CV_MAKETYPE(CV_32S,3)

#include <opencv2/core/hal/interface.h>

◆ CV_32SC4

#define CV_32SC4 CV_MAKETYPE(CV_32S,4)

#include <opencv2/core/hal/interface.h>

◆ CV_64F

#define CV_64F 6

#include <opencv2/core/hal/interface.h>

Examples:: samples/cpp/cout_mat.cpp, samples/cpp/train_HOG.cpp, samples/cpp/tutorial_code/features2D/Homography/decompose_homography.cpp, samples/cpp/tutorial_code/features2D/Homography/homography_from_camera_displacement.cpp, samples/cpp/tutorial_code/features2D/Homography/pose_from_homography.cpp, and samples/cpp/tutorial_code/ml/introduction_to_pca/introduction_to_pca.cpp.

◆ CV_64FC

#define CV_64FC ( n ) CV_MAKETYPE(CV_64F,(n))

#include <opencv2/core/hal/interface.h>

◆ CV_64FC1

#define CV_64FC1 CV_MAKETYPE(CV_64F,1)

#include <opencv2/core/hal/interface.h>

◆ CV_64FC2

#define CV_64FC2 CV_MAKETYPE(CV_64F,2)

#include <opencv2/core/hal/interface.h>

◆ CV_64FC3

#define CV_64FC3 CV_MAKETYPE(CV_64F,3)

#include <opencv2/core/hal/interface.h>

◆ CV_64FC4

#define CV_64FC4 CV_MAKETYPE(CV_64F,4)

#include <opencv2/core/hal/interface.h>

◆ CV_8S

#define CV_8S 1

#include <opencv2/core/hal/interface.h>

◆ CV_8SC

#define CV_8SC ( n ) CV_MAKETYPE(CV_8S,(n))

#include <opencv2/core/hal/interface.h>

◆ CV_8SC1

#define CV_8SC1 CV_MAKETYPE(CV_8S,1)

#include <opencv2/core/hal/interface.h>

◆ CV_8SC2

#define CV_8SC2 CV_MAKETYPE(CV_8S,2)

#include <opencv2/core/hal/interface.h>

◆ CV_8SC3

#define CV_8SC3 CV_MAKETYPE(CV_8S,3)

#include <opencv2/core/hal/interface.h>

◆ CV_8SC4

#define CV_8SC4 CV_MAKETYPE(CV_8S,4)

#include <opencv2/core/hal/interface.h>

◆ CV_8U

#define CV_8U 0

#include <opencv2/core/hal/interface.h>

Examples:: samples/cpp/demhist.cpp, samples/cpp/distrans.cpp, samples/cpp/squares.cpp, samples/cpp/stitching_detailed.cpp, samples/dnn/object_detection.cpp, and samples/tapi/squares.cpp.

◆ CV_8UC

#define CV_8UC ( n ) CV_MAKETYPE(CV_8U,(n))

#include <opencv2/core/hal/interface.h>

◆ CV_8UC1

#define CV_8UC1 CV_MAKETYPE(CV_8U,1)

#include <opencv2/core/hal/interface.h>

Examples:: samples/cpp/contours2.cpp, samples/cpp/create_mask.cpp, samples/cpp/falsecolor.cpp, samples/cpp/ffilldemo.cpp, samples/cpp/grabcut.cpp, samples/cpp/pca.cpp, samples/cpp/stitching_detailed.cpp, and samples/dnn/segmentation.cpp.

◆ CV_8UC2

#define CV_8UC2 CV_MAKETYPE(CV_8U,2)

#include <opencv2/core/hal/interface.h>

◆ CV_8UC3

◆ CV_8UC4

#define CV_8UC4 CV_MAKETYPE(CV_8U,4)

#include <opencv2/core/hal/interface.h>

◆ CV_BIG_INT

#define CV_BIG_INT ( n ) n##LL

#include <opencv2/core/hal/interface.h>

◆ CV_BIG_UINT

#define CV_BIG_UINT ( n ) n##ULL

#include <opencv2/core/hal/interface.h>

◆ CV_CN_MAX

#define CV_CN_MAX 512

#include <opencv2/core/hal/interface.h>

◆ CV_CN_SHIFT

#define CV_CN_SHIFT 3

#include <opencv2/core/hal/interface.h>

◆ CV_DEPTH_MAX

#define CV_DEPTH_MAX (1 << CV_CN_SHIFT)

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_BORDER_CONSTANT

#define CV_HAL_BORDER_CONSTANT 0

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_BORDER_ISOLATED

#define CV_HAL_BORDER_ISOLATED 16

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_BORDER_REFLECT

#define CV_HAL_BORDER_REFLECT 2

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_BORDER_REFLECT_101

#define CV_HAL_BORDER_REFLECT_101 4

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_BORDER_REPLICATE

#define CV_HAL_BORDER_REPLICATE 1

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_BORDER_TRANSPARENT

#define CV_HAL_BORDER_TRANSPARENT 5

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_BORDER_WRAP

#define CV_HAL_BORDER_WRAP 3

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_CMP_EQ

#define CV_HAL_CMP_EQ 0

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_CMP_GE

#define CV_HAL_CMP_GE 2

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_CMP_GT

#define CV_HAL_CMP_GT 1

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_CMP_LE

#define CV_HAL_CMP_LE 4

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_CMP_LT

#define CV_HAL_CMP_LT 3

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_CMP_NE

#define CV_HAL_CMP_NE 5

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_DFT_COMPLEX_OUTPUT

#define CV_HAL_DFT_COMPLEX_OUTPUT 16

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_DFT_INVERSE

#define CV_HAL_DFT_INVERSE 1

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_DFT_IS_CONTINUOUS

#define CV_HAL_DFT_IS_CONTINUOUS 512

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_DFT_IS_INPLACE

#define CV_HAL_DFT_IS_INPLACE 1024

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_DFT_REAL_OUTPUT

#define CV_HAL_DFT_REAL_OUTPUT 32

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_DFT_ROWS

#define CV_HAL_DFT_ROWS 4

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_DFT_SCALE

#define CV_HAL_DFT_SCALE 2

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_DFT_STAGE_COLS

#define CV_HAL_DFT_STAGE_COLS 128

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_DFT_TWO_STAGE

#define CV_HAL_DFT_TWO_STAGE 64

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_ERROR_NOT_IMPLEMENTED

#define CV_HAL_ERROR_NOT_IMPLEMENTED 1

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_ERROR_OK

#define CV_HAL_ERROR_OK 0

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_ERROR_UNKNOWN

#define CV_HAL_ERROR_UNKNOWN -1

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_GEMM_1_T

#define CV_HAL_GEMM_1_T 1

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_GEMM_2_T

#define CV_HAL_GEMM_2_T 2

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_GEMM_3_T

#define CV_HAL_GEMM_3_T 4

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_SVD_FULL_UV

#define CV_HAL_SVD_FULL_UV 8

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_SVD_MODIFY_A

#define CV_HAL_SVD_MODIFY_A 4

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_SVD_NO_UV

#define CV_HAL_SVD_NO_UV 1

#include <opencv2/core/hal/interface.h>

◆ CV_HAL_SVD_SHORT_UV

#define CV_HAL_SVD_SHORT_UV 2

#include <opencv2/core/hal/interface.h>

◆ CV_MAKE_TYPE

#define CV_MAKE_TYPE CV_MAKETYPE

#include <opencv2/core/hal/interface.h>

◆ CV_MAKETYPE

#define CV_MAKETYPE	(	depth,
		cn
	)	(CV_MAT_DEPTH(depth) + (((cn)-1) << CV_CN_SHIFT))

#include <opencv2/core/hal/interface.h>

◆ CV_MAT_DEPTH

#define CV_MAT_DEPTH ( flags ) ((flags) & CV_MAT_DEPTH_MASK)

#include <opencv2/core/hal/interface.h>

◆ CV_MAT_DEPTH_MASK

#define CV_MAT_DEPTH_MASK (CV_DEPTH_MAX - 1)

#include <opencv2/core/hal/interface.h>

◆ CV_USRTYPE1

#define CV_USRTYPE1 7

#include <opencv2/core/hal/interface.h>

Typedef Documentation

◆ int64

typedef int64_t int64

#include <opencv2/core/hal/interface.h>

◆ schar

typedef signed char schar

#include <opencv2/core/hal/interface.h>

◆ uchar

typedef unsigned char uchar

#include <opencv2/core/hal/interface.h>

Examples:: samples/cpp/distrans.cpp, and samples/dnn/segmentation.cpp.

◆ uint

typedef uint32_t uint

#include <opencv2/core/hal/interface.h>

◆ uint64

typedef uint64_t uint64

#include <opencv2/core/hal/interface.h>

◆ ushort

typedef unsigned short ushort

#include <opencv2/core/hal/interface.h>

Function Documentation

◆ hal_ni_dct2D()

int hal_ni_dct2D	(	cvhalDFT *	context,
		const uchar *	src_data,
		size_t	src_step,
		uchar *	dst_data,
		size_t	dst_step
	)

inline

#include <core/src/hal_replacement.hpp>

Parameters

context	pointer to context storing all necessary data
src_data,src_step	source image data and step
dst_data,dst_step	destination image data and step

◆ hal_ni_dctFree2D()

int hal_ni_dctFree2D ( cvhalDFT * context )

inline

#include <core/src/hal_replacement.hpp>

Parameters

context pointer to context storing all necessary data

◆ hal_ni_dctInit2D()

int hal_ni_dctInit2D	(	cvhalDFT **	context,
		int	width,
		int	height,
		int	depth,
		int	flags
	)

inline

#include <core/src/hal_replacement.hpp>

Parameters

context	double pointer to context storing all necessary data
width,height	image dimensions
depth	image type (CV_32F or CV64F)
flags	algorithm options (combination of CV_HAL_DFT_INVERSE, ...)

◆ hal_ni_dft1D()

int hal_ni_dft1D	(	cvhalDFT *	context,
		const uchar *	src,
		uchar *	dst
	)

inline

#include <core/src/hal_replacement.hpp>

Parameters

context	pointer to context storing all necessary data
src	source data
dst	destination data

◆ hal_ni_dft2D()

int hal_ni_dft2D	(	cvhalDFT *	context,
		const uchar *	src_data,
		size_t	src_step,
		uchar *	dst_data,
		size_t	dst_step
	)

inline

#include <core/src/hal_replacement.hpp>

Parameters

context	pointer to context storing all necessary data
src_data,src_step	source image data and step
dst_data,dst_step	destination image data and step

◆ hal_ni_dftFree1D()

int hal_ni_dftFree1D ( cvhalDFT * context )

inline

#include <core/src/hal_replacement.hpp>

Parameters

context pointer to context storing all necessary data

◆ hal_ni_dftFree2D()

int hal_ni_dftFree2D ( cvhalDFT * context )

inline

#include <core/src/hal_replacement.hpp>

Parameters

context pointer to context storing all necessary data

◆ hal_ni_dftInit1D()

int hal_ni_dftInit1D	(	cvhalDFT **	context,
		int	len,
		int	count,
		int	depth,
		int	flags,
		bool *	needBuffer
	)

inline

#include <core/src/hal_replacement.hpp>

Parameters

context	double pointer to context storing all necessary data
len	transformed array length
count	estimated transformation count
depth	array type (CV_32F or CV_64F)
flags	algorithm options (combination of CV_HAL_DFT_INVERSE, CV_HAL_DFT_SCALE, ...)
needBuffer	pointer to boolean variable, if valid pointer provided, then variable value should be set to true to signal that additional memory buffer is needed for operations

◆ hal_ni_dftInit2D()

int hal_ni_dftInit2D	(	cvhalDFT **	context,
		int	width,
		int	height,
		int	depth,
		int	src_channels,
		int	dst_channels,
		int	flags,
		int	nonzero_rows
	)

inline

#include <core/src/hal_replacement.hpp>

Parameters

context	double pointer to context storing all necessary data
width,height	image dimensions
depth	image type (CV_32F or CV64F)
src_channels	number of channels in input image
dst_channels	number of channels in output image
flags	algorithm options (combination of CV_HAL_DFT_INVERSE, ...)
nonzero_rows	number of nonzero rows in image, can be used for optimization

◆ hal_ni_minMaxIdx()

int hal_ni_minMaxIdx	(	const uchar *	src_data,
		size_t	src_step,
		int	width,
		int	height,
		int	depth,
		double *	minVal,
		double *	maxVal,
		int *	minIdx,
		int *	maxIdx,
		uchar *	mask
	)

inline

#include <core/src/hal_replacement.hpp>

Finds the global minimum and maximum in an array.

Parameters

src_data,src_step	Source image
width,height	Source image dimensions
depth	Depth of source image
minVal,maxVal	Pointer to the returned global minimum and maximum in an array.
minIdx,maxIdx	Pointer to the returned minimum and maximum location.
mask	Specified array region.

Modules
	Element-wise add and subtract

	Element-wise minimum or maximum

	Element-wise absolute difference

	Bitwise logical operations

	Element-wise compare

	Element-wise multiply

	Element-wise divide

	Element-wise reciprocial

	Element-wise weighted sum

	Channel split

	Channel merge

	Atan calculation

	Magnitude calculation

	Inverse square root calculation

	Square root calculation

	Natural logarithm calculation

	Exponent calculation

	LU matrix decomposition

	Cholesky matrix decomposition

	Singular value matrix decomposition

	QR matrix decomposition

	Matrix multiplication

Modules

Classes

Functions

Return codes

Data types

Comparison operation

Border processing modes

DFT flags

SVD flags

Gemm flags

Detailed Description

Macro Definition Documentation

◆ CV_16S

◆ CV_16SC

◆ CV_16SC1

◆ CV_16SC2

◆ CV_16SC3

◆ CV_16SC4

◆ CV_16U

◆ CV_16UC

◆ CV_16UC1

◆ CV_16UC2

◆ CV_16UC3

◆ CV_16UC4

◆ CV_32F

◆ CV_32FC

◆ CV_32FC1

◆ CV_32FC2

◆ CV_32FC3

◆ CV_32FC4

◆ CV_32S

◆ CV_32SC

◆ CV_32SC1

◆ CV_32SC2

◆ CV_32SC3

◆ CV_32SC4

◆ CV_64F

◆ CV_64FC

◆ CV_64FC1

◆ CV_64FC2

◆ CV_64FC3

◆ CV_64FC4

◆ CV_8S

◆ CV_8SC

◆ CV_8SC1

◆ CV_8SC2

◆ CV_8SC3

◆ CV_8SC4

◆ CV_8U

◆ CV_8UC

◆ CV_8UC1

◆ CV_8UC2

◆ CV_8UC3

◆ CV_8UC4

◆ CV_BIG_INT

◆ CV_BIG_UINT

◆ CV_CN_MAX

◆ CV_CN_SHIFT

◆ CV_DEPTH_MAX

◆ CV_HAL_BORDER_CONSTANT

◆ CV_HAL_BORDER_ISOLATED

◆ CV_HAL_BORDER_REFLECT

◆ CV_HAL_BORDER_REFLECT_101

◆ CV_HAL_BORDER_REPLICATE

◆ CV_HAL_BORDER_TRANSPARENT

◆ CV_HAL_BORDER_WRAP

◆ CV_HAL_CMP_EQ

◆ CV_HAL_CMP_GE

◆ CV_HAL_CMP_GT

◆ CV_HAL_CMP_LE

◆ CV_HAL_CMP_LT

◆ CV_HAL_CMP_NE

◆ CV_HAL_DFT_COMPLEX_OUTPUT

◆ CV_HAL_DFT_INVERSE

◆ CV_HAL_DFT_IS_CONTINUOUS

◆ CV_HAL_DFT_IS_INPLACE

◆ CV_HAL_DFT_REAL_OUTPUT

◆ CV_HAL_DFT_ROWS

◆ CV_HAL_DFT_SCALE

◆ CV_HAL_DFT_STAGE_COLS