网上一般很多SIFT算法都无法直接使用，这是我下载后修改的，确定能在vs2010下运行，但你一定要先安装最新的opencv。保证能成功运行。-Online is generally a lot of the SIFT algorithm can not be used directly, which is modified after I download to determine the run in vs2010, but you must first install the latest