opencv——角点检测

#include"cv.h"
#include"highgui.h"
#include"stdio.h"

#define max_corners 50
int main(int argc, char** argv)
{
int cornerCount = max_corners;
CvPoint2D32f corners[max_corners];
double qualityLevel = 0.05;
double minDistance = 5;
IplImage *srcImage = 0, *grayImage = 0, *corners1 = 0, *corners2 = 0;
int i;
CvScalar color = CV_RGB(255, 0, 0);
cvNamedWindow("image", 1);
srcImage = cvLoadImage("D:\\chengxu\\opencv\\Desert.jpg", 1);
grayImage = cvCreateImage(cvGetSize(srcImage), IPL_DEPTH_8U, 1);
cvCvtColor(srcImage, grayImage, CV_BGR2GRAY);
corners1 = cvCreateImage(cvGetSize(srcImage), IPL_DEPTH_32F, 1);
corners2 = cvCreateImage(cvGetSize(srcImage), IPL_DEPTH_32F, 1);
cvGoodFeaturesToTrack(grayImage, corners1, corners2, corners,&cornerCount, qualityLevel, minDistance, 0);
printf("num corners found: %d\n", cornerCount);

if (cornerCount>0)
{
for (i = 0; i <cornerCount; ++i)
{
cvCircle(srcImage, cvPoint((int)(corners[i].x), (int)(corners[i].y)), 6,
color, 2, CV_AA, 0);
}
}
cvShowImage("image", srcImage);
cvReleaseImage(&srcImage);
cvReleaseImage(&grayImage);
cvReleaseImage(&corners1);
cvReleaseImage(&corners2);
cvWaitKey(0);
return 0;
}