cvGoodFeaturesToTrack()

#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;
}

opencv1.0中用到的語法在包含opencv2.0的庫時也能使用。