如何获得 OpenCV 霍夫圆变换 C++ 中的圆数

Question

I am testing the following;

[https://docs.opencv.org/3.4/d4/d70/tutorial_hough_circle.html][1]

and it seems to be running fine. My question is how to get the number of circles in the image?

Answer 1

There is no direct way to get the number of circles in an OpenCV Hough Circle Transformation. However, you can use the cv::HoughCircles function to get the coordinates of the circles, and then use the cv::countNonZero function to count the number of non-zero pixels in the image.