中文说明：这个有中文注释，看得明白，结合PCA的尺度不变特征变换(SIFT)算法，在matlab R2009b调试通过，外文资料里面的源代码，matlab程序运行时导入数据文件作为输入参数，正确率可以达到98％。
English Description：
The Chinese notes, to understand it, combined with PCA scale invariant feature transform (SIFT) algorithm, in the MATLAB r2009b debugging through, foreign material inside the source code, matlab program is running into data files as input parameters, the correct rate can be reached 98%.