基于SIFT的特征匹配源代码，代码中含有对SIFT的最详尽表述，能让你更加深入的了解SIFT的工作流程，其中几个DEMO是SIFT的几个应用的例子-SIFT-based feature matching source code, the code contains the most detailed presentation on SIFT, allowing you to more in-depth understanding of the SIFT workflow, several DEM