霍夫圆检测代码

#include

#include

int main(int argc,char**argv)

{

    IplImage*img;

        if(argc==2&&(img=cvLoadImage(argv[1],1))!=0)

        {

            IplImage* gray=cvCreateImage(cvGetSize(img),8,1);

            CvMemStorage* storage=cvCreateMemStorage(0);

            cvCvtColor(img,gray,CV_BGR2GRAY);

            cvSmooth(gray,gray,CV_GAUSSIAN,9,9);

         CvSeq* circles=cvHoughCircles(gray,storage,CV_HOUGH_GRADIENT,2,gray->height/4,200,100);

            int i;

         for(i=0;itotal;i++)

            {

                float* p=(float*)cvGetSeqElem(circles,i);

                cvCircle(img,cvPoint(cvRound(p[0]),cvRound(p[1])),3,CV_RGB(0,255,0),-1,8,0);

                cvCircle(img,cvPoint(cvRound(p[0]),cvRound(p[1])),cvRound(p[2]),CV_RGB(255,0,0),3,8,0);

            }

            cvNamedWindow("circles",1);

            cvShowImage("circles",img);

cvWaitKey(0);

        }

        return 0;

}

#include

#include

#include

int main(int argc,char**argv) 

{ 

IplImage*img; 

if(argc==2&&(img=cvLoadImage(argv[1],1))!=0) 

{ 

IplImage* gray=cvCreateImage(cvGetSize(img),8,1); 

CvMemStorage* storage=cvCreateMemStorage(0); 

cvCvtColor(img,gray,CV_BGR2GRAY); 

cvSmooth(gray,gray,CV_GAUSSIAN,9,9); 

CvSeq* circles=cvHoughCircles(gray,storage,CV_HOUGH_GRADIENT,2,gray->height/4,200,100); 

int i; 

for(i=0;i total;i++)

{ 

float* p=(float*)cvGetSeqElem(circles,i); 

cvCircle(img,cvPoint(cvRound(p[0]),cvRound(p[1])),3,CV_RGB(0,255,0),-1,8,0); 

                cvCircle(img,cvPoint(cvRound(p[0]),cvRound(p[1])),cvRound(p[2]),CV_RGB(255,0,0),3,8,0); 

} 

cvNamedWindow("circles",1); 

cvShowImage("circles",img); 

cvWaitKey(0); //加这句话，不然图像会一闪而过

} 

return 0; 

}