Quote:
Originally Posted by fsr
......Peter: don't forget that you have the luminance, and the real red and green channels. The luminance is made by the addition of the 3 channels, so by substracting the red and green from the luminance, you should get the real blue....
Regards
|
Nup. I think Helmholtz sorted this a while back
The L channel records all colours. All colours can be made from red green and blue. But it does not follow all colours without red and green are always blue.
e.g. All old farmers are called McDonald. McDonald is a farmer. But he is not old.