Converting gray scale to ycbcr??

Is there any way by which we can convert a gray scale to Ycbcbr???

Answer 1

[David Young]

A greyscale image has no colour information, but you can still represent it as ycbcr if you wish - though it's not clear why you'd want to, since the chrominance planes will be constants. Anyway, this will convert, assuming you're starting from a 2D greyscale image:

    rgbimage(:,:,1) = greyimage;
    rgbimage(:,:,2) = greyimage;
    rgbimage(:,:,3) = greyimage;
    ycbcrimage = rgb2ycbcr(rgbimage);

You can also convert a colormap using the same function, if that's what you want to do.

[Christin Panjaitan]

How is about grayscale High Dynamic Range (12-bit) ? How to convert grayscale High Dynamic Range into Ycbcr ?