说明：  一个典型的人脸识别系统主要包括训练过程和识别过程。训练过程主要完成将已知人脸进行定位、特征提取与选择、以及分类器的设计；识别过程则完成将未知图片进行处理，并最终识别出身份的分类和决策
(A typical face recognition system mainly include the training process and the identification process. Completion of the training process will be the main face of known position, feature extraction and selection, and classifier design identification process will be completed to deal with the unknown image, and ultimately identify the identity of the classification and decision-making)