打开两幅图片，显示图片，并且比较这两幅图片的差别显示出来。-Open the two pictures, display pictures, and compare the difference between these two pictures displayed.

用于人脸的筛选，在同一个人的很多人脸图片集中筛选出差别最大的几张，这样可以保证最大的代表性-For the face of the screen, in the same person a lot of face images focused on screening out the biggest difference, so as to ensure the greatest representative