MATLAB: How do you chang RGB Color Space in to the HSI Color Space or YCbCr Color Space ??

Question

how do you chang RGB Color Space in to the HSI Color Space or YCbCr Color Space ???

Answer 1

 YCBCR = rgb2ycbcr(RGB) converts the truecolor image RGB to the equivalent image in the YCbCr color space. RGB must be a M-by-N-by-3 array.