CvMat Struct Reference

Matrix elements are stored row by row. More...

#include "types_c.h"

Collaboration diagram for CvMat:

Public Member Functions
	CvMat ()
	CvMat (const cv::Mat &m)

Public Attributes
union {
int   height
int   rows
};
union {
int   cols
int   width
};
union {
double *   db
float *   fl
int *   i
uchar *   ptr
short *   s
}	data
int	hdr_refcount
int *	refcount
int	step
int	type

Detailed Description

Matrix elements are stored row by row.

Element (i, j) (i - 0-based row index, j - 0-based column index) of a matrix can be retrieved or modified using CV_MAT_ELEM macro:

uchar pixval = CV_MAT_ELEM(grayimg, uchar, i, j)
CV_MAT_ELEM(cameraMatrix, float, 0, 2) = image.width*0.5f;

To access multiple-channel matrices, you can use CV_MAT_ELEM(matrix, type, i, j*nchannels + channel_idx).

Deprecated:

CvMat is now obsolete; consider using Mat instead.

Examples:

samples/cpp/polar_transforms.cpp.

Constructor & Destructor Documentation

CvMat() [1/2]

CvMat::CvMat ( )

inline

CvMat() [2/2]

CvMat::CvMat ( const cv::Mat &  m )

inline

References cvMat().

Here is the call graph for this function:

Member Data Documentation

@83

union { ... }

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union { ... }

cols

int CvMat::cols

Referenced by cvMat(), cvmGet(), and cvmSet().

data

union { ... } CvMat::data

Referenced by cvDecRefData(), cvMat(), cvmGet(), and cvmSet().

db

double* CvMat::db

fl

float* CvMat::fl

hdr_refcount

int CvMat::hdr_refcount

Referenced by cvMat().

height

int CvMat::height

i

int* CvMat::i

ptr

uchar* CvMat::ptr

Referenced by cvDecRefData(), cvMat(), cvmGet(), and cvmSet().

refcount

int* CvMat::refcount

Referenced by cvDecRefData(), cvIncRefData(), and cvMat().

rows

int CvMat::rows

Referenced by cvMat(), cvmGet(), and cvmSet().

s

short* CvMat::s

step

int CvMat::step

Referenced by cvMat(), cvmGet(), and cvmSet().

type

int CvMat::type

Referenced by cvMat(), cvmGet(), and cvmSet().

width

int CvMat::width

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The documentation for this struct was generated from the following file:

• core/include/opencv2/core/types_c.h