说明：  改进fcm分割算法，它是一种无监督分割方法，无需人的干预，分割过程完全是自动完成 它可以很好地处理噪声，部分体积影响和图像模糊。
(Improve FCM segmentation algorithm, it is a kind of unsupervised segmentation method, without human intervention, process fully automatic segmentation complete It can be a very good deal with noise, part of the volume effect and image fuzzy )