OpnCV_(HoughCircles to find circles)霍夫变换检测圆形

 //4.霍夫变换检测圆形------------------------------------------------------
      cv::Mat image = cv::imread("../../aTestImage/carriage.jpg", 0);//Building
      cv::GaussianBlur(image, image, cv::Size(5, 5), 1.5);//高斯滤波 变模糊 5*5卷积核 加权平均数1.5 
	std::vector circles;

	//(src,res, ,累加器分辨率，圆之间最小距离， Canny高阈值，最小投票数，极大值半径，极小值半径)
	cv::HoughCircles(image,  circles,  CV_HOUGH_GRADIENT, 2, 50, 200, 100, 20,60 );

	std::vector::const_iterator itc = circles.begin();
	while (itc != circles.end())
	{
		cv::circle(image, cv::Point((*itc)[0], (*itc)[1]), (*itc)[2], cv::Scalar(255), 2);
		++itc;
	}