c++ 利用霍夫变换实现对图片中圆的检测

#include<iostream>
#include<opencv2/opencv.hpp>
using namespace std;
using namespace cv;int main()
{Mat src = imread("d://VC项目//img9.jpg");if (!src.data){printf("图片路径不存在!");}//中值滤波Mat media_img,gray_img,rgb_img;medianBlur(src, media_img, 5);cvtColor(media_img, gray_img, COLOR_BGR2GRAY);//霍夫圆检测vector<Vec4f>circles;Scalar color = Scalar(0, 0, 255);HoughCircles(gray_img,circles, HOUGH_GRADIENT, 1, 100, 100, 40, 80, 200);src.copyTo(rgb_img);for (size_t i = 0; i < circles.size(); i++){Vec4f c = circles[i];circle(rgb_img, Point(c[0], c[1]), c[2], color, 2, LINE_AA);circle(rgb_img, Point(c[0], c[1]),1,Scalar(255,0,0), 2, LINE_AA);}medianBlur(rgb_img,rgb_img, 5);imshow("src", src);imshow("gray_img", gray_img);imshow("rgb_img", rgb_img);waitKey(0);return 0;
}