I = imread(‘pout.tif‘); imshow(I)； figure imhist(I) I2 = histeq(I); figure imshow(I2) imwrite (I2, ‘pout2.png‘); imfinfo(‘pout2.png‘)I3 = rgb2gray(I2);
MATLAB 图像操作基础
原文：http://www.cnblogs.com/wrajj/p/4862115.html
