说明：  MATLAB工具结合数字图像处理，完成实验，有图像彩色空间转换，傅里叶变换，余弦变换，直方图均衡等等，有需要的看一下。
(Combination of MATLAB tools for digital image processing, the completion of the experiment, the image color space conversion, Fourier transform, cosine transform, histogram equalization and so on, there is a need to look at the.)