特别牛的SIFT实现，VLFeat 0.9.13，代码特别清晰。C语言编写，有matlab接口。还包括了SIFT, MSER, k-means, hierarchical k-means等相关算法。-A library implements popular computer vision algorithms including SIFT, MSER, k-means, hierarchical k-means.

this is mser and sift algorithms in vlfeat