这个资源是《精通VC++数字图像模式识别技术及工程实践（第2版）》光盘中的实验素材，包括人脸图像、指纹图像、数字和字母图像、USPS图像。-The resources, " proficient in VC++ Digital Image Pattern Recognition Technology and Engineering Practice [2nd edition]" CD-ROM in the experimental material, including the

LDA先降维再对USPS手写体进行排序，虽然效果不太好，但可以为大家提供一种思路。-LDA dimension reduction first and then the USPS handwritten sort, although the effect is not very good, but it can provide you an idea.