人脸识别过程中的PCA降维例程，读者可借助理论分析例程，基于OpenCV2.0版本开源库 版，在VS2005 调试执行成功。包含400张人脸库-PCA face recognition in the process of dimensionality reduction routine, the reader can make use of theoretical analysis routines, based on open-source library version OpenCV2.0