至今最快速的圆检测算法. 能对自然景观和任何复杂场景中的圆形物体（半径介于１５像素和５００像素之间，包括破裂圆）进行实时检测．-The fastest circle detection algorithm ever. It can detect circles or arcs with radii ranging from 15 pixels to 500 pixels in real time.