The Yale Facedatabase A (also known as Yalefaces) consists of 15 people (14 male, 1 female) each with 11 grayscale images sized pixel. There are changes in the light conditions (center light, left light, right light), facial expressions (happy, normal, sad, sleepy, surprised, wink) and glasses (glasses, no-glasses). 图片为bmp格式，裁剪为100*100

用于研究人脸识别的yale人脸数据库

yale 数据库，网上找这些数据库很不容易

2DPCA，包含Yalefaces人脸图像集，大量注释，是自己的初学时的理解，如有错误，请指正