Is it possible to create a "profile" using just a few datapoints?

[Marie Meyer]

Is it possible to make a profile or something that can substitute for a missing profile knowing just a few data points? I'd like to make something that stands in for a Extended Gamut (CMY + OGV) profile. I know the white point, the black, and the LAB values for the 6 "primaries". I'd like to have a profile for this "space" so that I can use software like PatchTool and/or ColorThinkPro to check a list of colors to find which ones are out of gaumt.

 

[Schnitzel]

I don't think this is possible without extensive programming on your part. There are various color models that can predict CIELab values from a small set of measurements - Clapper-Yule, Kubelka-Munk etc. Using these, you could simulate a measurements file (CGATS or other format) that contains enough "measured" points for the profile making software to build you an ICC profile. Its accuracy will not be so high, obviously.

I haven't seen a tool that can do this for you. Maybe someone else here known of one.

 

[gordo]

ColorXTC has the tools to do that and I believe they offer it as a service: http://www.colorxtc.com/