本程序利用不变矩实现了仿射变换的功能，感觉效果不错。-This procedure using invariant moment realized the affine transform function, feeling good results.

基于SURF的仿射变换识别源代码，包括提取灰度图像的尺度不变特征（SIFT特征）-SURF-based affine transformation recognition source code, including the extraction of grayscale images scale invariant feature (SIFT features)