0 Replies Latest reply on Mar 29, 2015 4:23 AM by Ben-Uri

    How to compute the ColorMatrix?

    Ben-Uri Level 1

      What's the preferred way to compute the ColorMatrix of a new camera?


      Is it possible to compute the ColorMatrix from the ForwardMatrix?

      It seems that the ColorMatrix can be computed from the ForwardMatrix using the following formula:

       

      CM = WB * FM^{-1} * MW^{-1}

       

      where:

      - WB is the camera neutral values as a diagonal matrix

      - FM is the forward matrix

      - MW is the chromatic adaptation matrix

       

      I tried this formula on some color profiles made by Adobe and compared with the existing ColorMatrix.

      However, this formula yields a different result than the one existing in the profiles.

       

      What am I doing wrong?