How can I convert to the XYZ color space from a non-standard RGB color profile using the Image Processing Toolbox 4.1 (R13SP1)?

Can I convert from a custom RGB color space to the XYZ color space using the MAKECFORM function? I would like to do something similar to:

A = makecform('srgb2xyz')

except, instead of using the sRGB color space, I would like to use a custom RGB color profile.

Answer 1

[MathWorks Support Team]

To convert from a non-standard RGB color profile to the device-independent XYZ profile connection space, use the following code:

InputProfile = iccread('myRGB.icc');

C = makecform('mattrc',InputProfile.MatTRC, 'direction', 'forward');

Note that this will only work if the ICC profile includes a MatTRC value.