中文说明：文件给出了matlab语言进行，对二值图像先用sobel 算子找出边缘，再用hough变换找出圆的圆心和半径的程序，并附图像和解释！
English Description：
MATLAB language is given in this paper. Firstly, Sobel operator is used to find out the edge of binary image, then Hough transform is used to find out the center and radius of circle, and the image and explanation are attached!