Oops! I wrote the wrong thing: I already extracted the ICCs 
. However, that format isn’t human readable.
What I wanted to ask: how did you get to the point where you could compare the profiles with @Elle’s. I know I could probably examine dcraw.c and make-elles-profiles.c, but I am not a math or code wiz. It would be great if you, @Elle or someone more capable than I could guide me through the steps. Thanks.