cvfeatureselect.cpp File Reference

#include "_cv.h"

Macros
#define	cmp_features(f1, f2)   (*(f1) > *(f2))

Functions
	CV_FUNCNAME ("cvGoodFeaturesToTrack")
	if (corner_count)
	CV_CALL (img=cvGetMat(img,&stub,&coi1))
	if (eig)
	if (tmp)
	if (mask)
	if (coi1!=0||coi2!=0||coi3!=0) CV_ERROR(CV_BadCOI
	if (CV_MAT_CN(img->type)!=1||CV_MAT_CN(eig->type)!=1||CV_MAT_CN(tmp->type)!=1) CV_ERROR(CV_BadNumChannels
	if (CV_MAT_DEPTH(tmp->type)!=CV_32F||CV_MAT_DEPTH(eig->type)!=CV_32F) CV_ERROR(CV_BadDepth
	if (!corners||!corner_count) CV_ERROR(CV_StsNullPtr
	if (max_count<=0) CV_ERROR(CV_StsBadArg
	if (quality_level<=0||min_distance< 0) CV_ERROR(CV_StsBadArg
	if (use_harris)
	CV_CALL (cvMinMaxLoc(eig, 0,&max_val, 0, 0, mask))
	CV_CALL (cvThreshold(eig, eig, max_val *quality_level, 0, CV_THRESH_TOZERO))
	CV_CALL (cvDilate(eig, tmp))
	for (y=1, k=0;y< size.height-1;y++)
	icvSortFeatures (ptr_data, k, 0)
	for (i=0;i< k;i++)

Variables
static void *	eigImage
static void void *	tempImage
static void void CvPoint2D32f *	corners
static void void CvPoint2D32f int *	corner_count = count
static void void CvPoint2D32f int double	quality_level
static void void CvPoint2D32f int double double	min_distance
static void void CvPoint2D32f int double double const void *	maskImage
static void void CvPoint2D32f int double double const void int	block_size
static void void CvPoint2D32f int double double const void int int	use_harris
static void void CvPoint2D32f int double double const void int int double	harris_k
CvMat *	_tmpImg = 0
	__BEGIN__
double	max_val = 0
int	max_count = 0
int	count = 0
int	x
int	y
int	i
int	k = 0
int	min_dist = cvRound( min_distance * min_distance )
int	eig_step = eig->step / sizeof(eig_data[0])
int	tmp_step = tmp->step / sizeof(tmp_data[0])
CvPoint *	ptr = (CvPoint *) corners
int *	eig_data = 0
int *	tmp_data = 0
int **	ptr_data = 0
uchar *	mask_data = 0
int	mask_step = 0
CvSize	size = cvGetMatSize( img )
int	coi1 = 0
int	coi2 = 0
int	coi3 = 0
CvMat	stub
CvMat *	img = (CvMat*)image
CvMat	eig_stub
CvMat *	eig = (CvMat*)eigImage
CvMat	tmp_stub
CvMat *	tmp = (CvMat*)tempImage
CvMat	mask_stub
CvMat *	mask = (CvMat*)maskImage
	else
	cvUnsupportedFormat
maximal corners number is non	positive
	__END__
cvReleaseMat &	_eigImg

Macro Definition Documentation

#define cmp_features	(		f1,
			f2
	)		(*(f1) > *(f2))

Function Documentation

CV_CALL

(

img

= cvGetMat(img,&stub,&coi1)

)

CV_CALL

(

cvMinMaxLoc(eig, 0,&max_val, 0, 0, mask)

)

CV_CALL

(

cvThreshold(eig, eig, max_val *quality_level, 0, CV_THRESH_TOZERO)

)

CV_CALL

(

cvDilate(eig, tmp)

)

CV_FUNCNAME

(

"cvGoodFeaturesToTrack"

)

for

(

y

= 1

)

for

(

)

icvSortFeatures	(	ptr_data	,
		k	,
		0
	)

if

(

corner_count

)

if

(

eig

)

if

(

tmp

)

if

(

mask

)

if

(

coi1!

= 0 || coi2 != 0 || coi3 != 0

)

if

(

CV_MAT_CN(img->type)!

= 1 || CV_MAT_CN(eig->type) != 1 || CV_MAT_CN(tmp->type) != 1

)

if

(

CV_MAT_DEPTH(tmp->type)!

= CV_32F || CV_MAT_DEPTH(eig->type) != CV_32F

)

if

(

!corners||!

corner_count

)

if

(

max_count<=

0

)

if

(

)

if

(

use_harris

)

Variable Documentation

__BEGIN__

__END__

cvReleaseMat & _eigImg

cvReleaseMat & _tmpImg = 0

void void CvPoint2D32f int double double const void int block_size

int coi1 = 0

int coi2 = 0

int coi3 = 0

* corner_count = count

void void CvPoint2D32f* corners

int count = 0

cvUnsupportedFormat

eig = (CvMat*)eigImage

eig_data = 0

eig_step = eig->step / sizeof(eig_data[0])

CvMat eig_stub

void* eigImage

else

Initial value:

{
        CV_CALL( _eigImg = cvCreateMat( img->rows, img->cols, CV_32FC1 ))

void void CvPoint2D32f int double double const void int int double harris_k

Initial value:

{
    CvMat* _eigImg = 0

int i

CvMat * img = (CvMat*)image

const char const char int int int const void const void int const void int const void void int *ldc const char const char int int int * k = 0

CvMat * mask = (CvMat*)maskImage

uchar* mask_data = 0

int mask_step = 0

CvMat mask_stub

void void CvPoint2D32f int double double const void* maskImage

int max_count = 0

double max_val = 0

min_dist = cvRound( min_distance * min_distance )

void void CvPoint2D32f int double double min_distance

quality level or min distance are non positive

const char const void * ptr = (CvPoint *) corners

ptr_data = 0

void void CvPoint2D32f int double quality_level

size = cvGetMatSize( img )

CvMat stub

void void* tempImage

tmp = (CvMat*)tempImage

tmp_data = 0

tmp_step = tmp->step / sizeof(tmp_data[0])

CvMat tmp_stub

void void CvPoint2D32f int double double const void int int use_harris

const float float int len const double double int len const float float int n const float float int n const float const float * x

const float float int len const double double int len const float float int n const float float int n const float * y