https://blog.csdn.net/sinat_34165087/article/details/78567289#12%E8%AE%A1%E7%AE%97%E5%8F%98%E6%8D%A2%E7%9F%A9%E9%98%B5
ICP算法详解
原文：https://www.cnblogs.com/gdut-gordon/p/11762503.html
