2
我正在尝试使用opencv检测实心圆圈。来自opencv文档的示例代码看起来好像不能检测纯白色。我将如何修改该代码以适用于纯白色圆圈?你能解释为什么它不适用于纯白色圆圈?使用opencv检测纯白色圆圈HoughCircles
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include <iostream>
#include <stdio.h>
using namespace cv;
/** @function main */
int main(int argc, char** argv)
{
Mat src, src_gray;
/// Read the image
src = imread(argv[1], 1);
if(!src.data)
{ return -1; }
/// Convert it to gray
cvtColor(src, src_gray, CV_BGR2GRAY);
/// Reduce the noise so we avoid false circle detection
GaussianBlur(src_gray, src_gray, Size(9, 9), 2, 2);
vector<Vec3f> circles;
/// Apply the Hough Transform to find the circles
HoughCircles(src_gray, circles, CV_HOUGH_GRADIENT, 1, src_gray.rows/8, 200, 100, 0, 0);
/// Draw the circles detected
for(size_t i = 0; i < circles.size(); i++)
{
Point center(cvRound(circles[i][0]), cvRound(circles[i][1]));
int radius = cvRound(circles[i][2]);
// circle center
circle(src, center, 3, Scalar(0,255,0), -1, 8, 0);
// circle outline
circle(src, center, radius, Scalar(0,0,255), 3, 8, 0);
}
/// Show your results
namedWindow("Hough Circle Transform Demo", CV_WINDOW_AUTOSIZE);
imshow("Hough Circle Transform Demo", src);
waitKey(0);
return 0;
}
我会发布图片,但我没有足够的栈溢出街道信用尚未。抱歉!
http://docs.opencv.org/doc/tutorials/imgproc/imgtrans/hough_circle/hough_circle.html官方教程有没有Canny的代码。 –