本程序提供了图相的双向一次微分，二次微分，横向微分，纵向微分等处理，C语言源码，编译通过。-This program provides a two-way differential phase diagram, the second differential, differential horizontal and vertical differential and other processing, C language source code, compile.

人脸识别的MATLAB软件，主要用于二维双向2DPCA的程序源码，帮助快速的分解图像，以便进行图像识别-Face Recognition MATLAB software, mainly used for the source code of the program of the two-dimensional bidirectional 2DPCA help fast decomposition image for image recognition