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| #include "stdafx.h"
#include "cv.h"
#include "highgui.h"
//This function threshold the HSV image and create a binary image
IplImage* GetThresholdedImage(IplImage* imgHSV){
IplImage* imgThresh=cvCreateImage(cvGetSize(imgHSV),IPL_DEPTH_8U, 1);
cvInRangeS(imgHSV, cvScalar(170,160,60), cvScalar(180,256,256), imgThresh);
return imgThresh;
}
// fonction cercle
IplImage* cercle(IplImage* img){
//cv::GaussianBlur(image,image,cv::Size(5,5),1.5);
//imshow("filtre",image);
IplImage* gray = cvCreateImage( cvGetSize(img), 8, 1 );
CvMemStorage* storage = cvCreateMemStorage(0);
cvCvtColor( img, gray, CV_BGR2GRAY );
cvSmooth( gray, gray, CV_GAUSSIAN, 9, 9 ); // smooth it, otherwise a lot of false circles may be detected
CvSeq* circles = cvHoughCircles( gray, storage, CV_HOUGH_GRADIENT, 2, gray->height/4, 200, 100 );
int i;
for( i = 0; i < circles->total; i++ )
{
float* p = (float*)cvGetSeqElem( circles, i );
cvCircle( img, cvPoint(cvRound(p[0]),cvRound(p[1])), cvRound(p[2]), CV_RGB(255,0,0), 3, 8, 0 );
}
//cvNamedWindow( "cicles", 1 );
//cvShowImage( "circles", img );
return img;
}
int main(){
CvCapture* capture =0;
capture = cvCaptureFromCAM(0);
if(!capture){
printf("Capture failure\n");
return -1;
}
IplImage* frame=0;
cvNamedWindow("Video");
cvNamedWindow("Ball");
//iterate through each frames of the video
while(true){
frame = cvQueryFrame(capture);
if(!frame) break;
frame=cvCloneImage(frame);
cvSmooth(frame, frame, CV_GAUSSIAN,3,3); //lissage avec gussien
IplImage* imgHSV = cvCreateImage(cvGetSize(frame), IPL_DEPTH_8U, 3);
cvCvtColor(frame, imgHSV, CV_BGR2HSV); // BGR à HSV
IplImage* imgThresh = GetThresholdedImage(imgHSV);
//std::vector<cv::Vec3f> circles;
//cv::HoughCircles(frame, circles, CV_HOUGH_GRADIENT,2,50,200,100,25, 100);
imgHSV=cercle(frame);
cvShowImage("Cercles",imgHSV);
//cvSmooth(imgHSV, imgHSV, CV_GAUSSIAN,3,3);
cvSmooth(imgHSV, imgHSV, CV_GAUSSIAN,3,3); //lissage de l'image binarisée avec gussien
cvShowImage("Ball", imgThresh);
cvShowImage("Video", frame);
//Clean up used images
cvReleaseImage(&imgHSV);
cvReleaseImage(&imgThresh);
cvReleaseImage(&frame);
//Wait 50mS
int c = cvWaitKey(10);
//If 'ESC' is pressed, break the loop
if((char)c==27 ) break;
}
cvDestroyAllWindows() ;
cvReleaseCapture(&capture);
return 0;
} |
