[argyllcms] Re: camera calibration targets

  • From: "Guy K. Kloss" <guy.kloss@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Mon, 15 Aug 2011 18:41:26 +1200

On Thu, 11 Aug 2011 1:28:53 PM nino loss wrote:
> I think the Colorchecker SG uses real world pigments for the patches 
> (instead of a mixture of a few for the whole target). That should, as I 
> understand, greatly improve the issues with metamerism. I read that the 
> CMP-color target is a inkjet print.

Yes, it is an ink-jet print. But money on the one hand was a real issue, and 
on the other hand perfect colour management with minimal Delta E values was 
not an issue. (Also see my other mail from today.)

So we have resolved the issue by using the standard CC24 chart to counter 
check plausibility, while using the CMP Digital Target 003 chart for 
profiling.

BTW, I also did write my own profiler, which does not nearly meet Argyll's 
level of quality. But it was rather as a sanity check to prove my approach, 
and I needed to have full access to all tags within an ICC file anyway (I have 
modified ICC file's A2B CLUTs on the fly), so it was a side product through 
which I have gained tremendous insight into what's going on.

Guy

-- 
Guy K. Kloss
School of Computing + Mathematical Sciences
Auckland University of Technology
Private Bag 92006, Auckland 1142
phone: +64 9 921 9999 ext. 5032
eMail: Guy.Kloss@xxxxxxxxx

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