[argyllcms] Re: basic icc profile for printer output using 24 patches?

> I was hoping to be able to generate a profile compensating for the
> ink/paper and driver influence. I have 2x24 values: Those resulting from
> a scan of an original colorchecker, and those of the scan of the
> printout. The difference between these values should allow some kind of
> correction function to be applied. I know that I cannot get all
> parameters that are to be handled by a profile. I was wondering if there
> are routines to generate this matching table in the form of a simplified
> profile included in argyll.
> 
> I have been using a similar approach for color correction with the tool
> macbethcal, which is part of the radiance light simulation distribution
> (radsite.lbl.gov). This also just created a simple correction function.
> The problem is that it works only on tiffs and not from inside
> applications, so I would have to establish an export-correct-print
> workflow for everything.
> 
> Maybe I am completely wrong? Thank You for all the information... Lars.

I am affraid you are completely wrong, Lars :(

Forget about your ColorChecker data. Unfortunately, they will not serve any
purpose in profiling your printer. You need to start with "device" values
(CMYK or RGB) and build your way from there. That's the golden rule in any
ICC profiling.

Roger Breton

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