s090.m

简单的数字图像处理程序

% 灰度图像二维离散余弦变换幅度谱伪彩色显示  s090
I90=imread('2.jpg');
I900=rgb2gray(I90);
I901=dct2(I900);
imshow(log(abs(I901)),[]),colormap(jet(64))