说明：  选用不变矩为目标特征,采用以积分方法为基础的一种不变,矩快速算法.对极点的计算提出了具体算法.给出了各种极点的叠加分量.
(use the same moment as the goal of using a scoring system based on an unchanged Moments fast algorithm. the calculation of Poles made specific algorithm. the pole is the superposition of various components.)