Converting from YCbCr to RGB

Hello

I have an image that I want to convert from and to the above mentioned.

The array is 512x512x3 with Y, Cb, Cr seperated.

When i used ycbcr2rgb I get a pink image, this is also the case when I try to convert each channel seperately, by using the conversion equations manually.

Could you perhaps help me explain why this happens, or what I'm doing wrong?

Thanks Sonny

[Sonny]

An addition is that the three channels in the output of the supposed RGB image isn't red green or blue, but rather the green is closer to grey in all of it, and the B is closer to white in most of it and the same goes for the R channel.

Answer 1

[Daanish Mohammed]

I encountered the same error. You should make sure that the original image and the one you obtain after reconstruction are of the same type. For me, the former was of type 'uint8' and the latter 'double'. Here's how I did it:

res_img = uint8(zeros(size(img)));  % 'img' is the original image (RGB), 'res_img' is the recovered YCbCr image.
res_img(:,:,1) = uint8(res_img_Y);   % the 3 channels (Y, Cb, Cr) were all of type double.
res_img(:,:,2) = uint8(res_img_Cb);
res_img(:,:,3) = uint8(res_img_Cr);

final_res_image = (ycbcr2rgb(res_img));    % Converting from YCbCr space to RGB space.

Hope this helps!