PCA carried out using handwritten numeral recognition, is mainly used Matlab realize the original image preprocessing, and then using the traditional PCA methods, improved PCA algorithm and 2-D PCA algorithm of digital identification.

源代码
......\2DPCA
......\.....\PCA2d.m
......\传统的PCA
......\.........\standardPCA.m
......\.........\StdPCA.m
......\.........\StdRecon.m
......\修改后的PCA（方法二）
......\.....................\PCA.m
......\.....................\pca005.m
......\.....................\recognize.m
......\原始数据读入及预处理结果
......\........................\Norm.m
......\........................\originimage.m

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