主成分分析（PCA）方法是人脸识别技术中常用的一种一维特征抽取方法。基于PCA的人脸识别。-Principal component analysis (PCA) method is commonly used in face recognition technology as a one-dimensional feature extraction methods. A face recognition algorithm based on PCA .

PCA人脸降维，基础内容，有利于学习掌握人脸特征，减少计算量-PCA face dimension reduction, basic content, is conducive to learning and mastering facial features, reduce the amount of calculation