自己制作的关于SIFT算法的PPT，综合了一些资料！！可以和以前上传的程序一起看！程序都是非常简单的，很基础，不像原版的SIFT程序复杂，适合初学者！-To produce their own SIFT algorithm on PPT, a combination of some of the information! ! From the past to watch the proceedings! Procedures are very simple, it is the basis, u