中文说明：用hough变换检测硬币,用hough变换检测硬币用hough变换检测硬币用hough变换检测硬币用hough变换检测硬币用hough变换检测硬币
English Description：
Using Hough transform in detecting coins, with the Hough transform in detecting coins coin detection by Hough transform using Hough transform in detecting coins coin detection by Hough transform using Hough transform in detecting coins