中文说明：成功测试过的关于sift算法的Matlab代码，很好用。可以有效便捷的提取特征点和进行匹配运算。里边有事例图片用于参考。
English Description：
Successfully tested on the SIFT algorithm Matlab code, is very easy. Can be convenient and efficient extraction and matching of feature points. Inside are pictures of examples for reference.