这是一个基于粒子群算法来寻找图片上的园的圆心，通过自己设置参数，可以在较短的时间内较为精确的找到一个图所有圆的圆心-It is used to find the location of circles in a complicant map. For this fuction, you can set some paraement yourself and it will return the result in a very short time.