角点检测的示例

Question

如题所述

Answer 1

#include cv.h
#include highgui.h
#define max_corners 100
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 ); //创建显示窗口
//加载一副图片
srcImage = cvLoadImage(..//..//c//pic3.png, 1);
grayImage = cvCreateImage(cvGetSize(srcImage), IPL_DEPTH_8U, 1);
//将原图灰度化
cvCvtColor(srcImage, grayImage, CV_BGR2GRAY);
//创建两个与原图大小相同的临时图像
corners1= cvCreateImage(cvGetSize(srcImage), IPL_DEPTH_32F, 1);
corners2= cvCreateImage(cvGetSize(srcImage),IPL_DEPTH_32F, 1);
//角点检测
cvGoodFeaturesToTrack (grayImage, corners1, corners2, corners,
&cornerCount, qualityLevel, minDistance, 0);
printf(num corners found: %d\n, cornerCount);
//在原图中将角点标记出来
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;
}