about conversion of color spaces

How to convert RGB color space into YUV color space?

Answer 1

[Chandra Kurniawan]

rgb2ycbcr

MATLAB YCbCr color space is often referred to as YUV.

[Priyanka]

but YUV color space is not exactly similar to Ycbcr color space.there are different conversion equations for that like U=0.493(B-Y),V=0.877(R-Y) and conversion matrix also. so How I can impement these equations for finding YUV color space.

[Chandra Kurniawan]

Hi,

I see the problem

from this link : http://en.wikipedia.org/wiki/YUV

we can also implement the formula by :

RGB = imread('football.jpg');

R = RGB(:,:,1);

G = RGB(:,:,2);

B = RGB(:,:,3);

Y = 0.299 * R + 0.587 * G + 0.114 * B;

U = -0.14713 * R - 0.28886 * G + 0.436 * B;

V = 0.615 * R - 0.51499 * G - 0.10001 * B;

YUV = cat(3,Y,U,V);

imshow(YUV);

[Priyanka]

Thanks alot.