中文说明：霍夫跨。这 Hough 变换已经过高度优化。它使用中点圆算法绘制圆投票空间中快速、 无间隙。它还包括一个选项寻找只是图像的一部分，以提高速度，如果圈位置粗略估计已知的。
English Description：
Hough trans.This Hough transform is highly optimized. It uses the midpoint circle algorithm to draw the circles in voting space quickly and without gaps. It also includes an option for searching only part of the image to increase speed if a rough estimate of the circle locations is known.