中文说明：这是我自己写的对图像进行预处理的matlab源程序，主要是对图像进行光照补偿、旋转与尺度归一化。上传上来和大家一起学习、分享。
English Description：
This is my own matlab source program for image preprocessing, mainly for image illumination compensation, rotation and scale normalization. Upload to learn and share with you.