Page 138 - Computational Colour Science Using MATLAB

IMPLEMENTATIONS AND EXAMPLES 125

% from the linearized RGB values
% for a given set of gog values
% gog is a 2 by 1 matrix that contains the gamma and gain
% dacs is an n by 1 matrix that contains the RGB values
% rgb is an n by 1 matrix of linearized RGB values

gamma = gogs(1);
gain = gogs(2);
for i = 1:length(rgb)
dacs(i) = ((rgb(i)^(1/gamma)) - (1-gain))/gain;
end
% force output to be a column vector
rgb = rgb(:);