中文说明：采用PCA的降维方法对人脸库中训练图像进行分类，然后根据计算对测试图像中所取得特征点和训练图像中相应点的欧式距离来进行判别式否为同一类，从而实现人脸识别。
English Description：
The dimension reduction method of PCA is used to classify the training images in the face database, and then the Euclidean distance between the feature points in the test image and the corresponding points in the training image is calculated to judge whether the formula is the same, so as to realize face recognition.