rgb=imread('lena.png'); YCbCr=rgb2ycbcr(rgb); subplot(221),imshow(rgb),title('image'); Y=YCbCr(:,:,1); Cb=YCbCr(:,:,2); Cr=YCbCr(:,:,3); ycbcrmap(:,:,1)=Y; ycbcrmap(:,:,2)=128; ycbcrmap(:,:,3)=128; subplot(222),imshow(Y),title('Y'); ycbcrma

This code perform the DCT and quantization on all the channels without any sub-sampling and for the compression of color images, they are first converted to the YCbCr color format and vice versa, use the function rgb2ycbcr and ycbcr2rgb.

平台（Matlab2008a，Simulink，Sysgen 10.1.03）硬件实现RGB2YCbCr -Platform (Matlab2008a, Simulink, Sysgen 10.1.03) hardware realise of RGB2YCbCr