Color space conversion (cam2xyz)

Hello all,

there is a fabulous site where raw image conversion (using Matlab) is described:

http://users.soe.ucsc.edu/~rcsumner/rawguide/

In my work, I follow steps described in the article; I use dcraw and later do linearization, white balancing, demosaicing and color space conversion...

In order to apply Bradford matrix and transform my image as being taken under D50 illuminant, I have to perform this multiplication in XYZ color space.

In this article, author does color space conversion: from camera rgb to srgb! This is original code:

rgb2cam = xyz2cam * rgb2xyz; % Assuming previously defined matrices

rgb2cam = rgb2cam ./ repmat(sum(rgb2cam,2),1,3); % Normalize rows to 1

cam2rgb = rgb2camˆ-1;

I would like to do the following color space conversion: from camera rgb to xyz! This is my code:

xyz2cam = xyz2cam ./ repmat(sum(xyz2cam,2),1,3); % Normalize rows to 1

cam2xyz = xyz2cam^-1;

I applied the same logic as author did, but am not sure wether my conversion is correct? Can you please explain normalization step?

Thank you, Matija.