中文说明：matlab环境下编的人脸检测和识别算法人脸识别部分采用的pca算法，另外包括一个人机界面，直接运行facedec程序即可运行
English Description：
The face detection and recognition algorithm compiled in Matlab environment, the PCA algorithm used in face recognition part, and a human computer interface, can be run directly by running facedec program