经典的图像匹配算法----SIFT  http://mp.weixin.qq.com/s?__biz=MzIzNDM2OTMzOQ==&mid=2247484319&idx=1&sn=33c16724594b338dd43b77530eaf9931&mpshare=1&scene=23&srcid=03024eQfqPMcKuz02WUPWIPI#rd

 

1.SIFT概述  http://www.cnblogs.com/wangguchangqing/p/4853263.html