In my problem, i have taken rgb image of size 512*512,then converted it to greyscale and applied dct2 on it.now i want to do huffman coding of this.Plz tell me how to do this and also tell me if i am wrong.

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tawheed jan 2013-11-27

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https://ww2.mathworks.cn/matlabcentral/answers/107714-in-my-problem-i-have-taken-rgb-image-of-size-512-512-then-converted-it-to-greyscale-and-applied-dct

关闭： MATLAB Answer Bot 2021-8-20

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I=imread('lena.jpg'); % Reads the image whose name is lena & format is jpg.
whos                  % 
save I
load I
T1=I;
figure;imshow(I);
title('coloured image of lena')
T1=im2double(T1);
G=rgb2gray(T1);
whos
imshow(G);
imagesc(G);title('grayscale image of lena')
T2=G;
Z=dct2(T2);
figure;imshow(Z);
title('dct transformed')