这是用于图像识别所需要的ORL图像库，该库有400张图片，共40个人，每人10张！对于进行识别的研究可以使用该库！-this is the ORL!

Eigenfaces: PCA tends to find a p-dimensional subspace whose basis vectors correspond to the maximum variance direction in the original image space (p  N). We called the new subspace defined by basis vectors “face space”. First, all training

ORL face database which is considered to be a standard face database for comparison of face recognition algorithms.