中文说明：应用背景一种人脸识别系统，用于自动识别或验证数字图像或视频帧中的一个人的计算机应用。关键技术一种人脸识别系统，用一个任意图像的输入进行搜索，将数据库中的人脸识别输入图像中的图像。人脸识别系统一般由四个模块组成：检测、比对、特征提取和匹配，其中定位和归一化（人脸检测和对准）是在人脸识别（人脸特征提取和匹配）的处理步骤。
English Description：
Application background a face recognition system for computer applications that automatically recognize or verify a person in a digital image or video frame. The key technology is a face recognition system, which uses an arbitrary image input to search, and inputs the face recognition in the database into the image in the image. Face recognition system generally consists of four modules: detection, comparison, feature extraction and matching, in which location and normalization (face detection and alignment) are the processing steps of face recognition (face feature extraction and matching).