OpenCV角点检测

OpenCV角点检测

 

#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);
 
//创建连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;
 
}