该课题为基于MATLAB平台的PCA的人脸识别系统。原理为：从一副生活照中寻找到人脸，分割人脸区域图像，PCA算法进行降维，和库里图片进行对比，输出目标人脸以及相关个人信息。该课题还可以继续二次开发，做成库内外人脸的识别，如果是库外人脸则实现报警等。(This project is a PCA face recognition system based on MATLAB platform. The principle is: find the face from a life photo, segment the face image, reduce the dimension of PCA algorithm, compare with the library image, output the target face and relevant personal information. The subject can also continue the secondary development to make face recognition inside and outside the library. If it is a face outside the library, alarm will be realized.)