[argyllcms] Re: colprof has different behavior run by dispcalGUI and in the command line

  • From: Hugo Meinedo <hugo.meinedo@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Fri, 1 Feb 2013 15:52:45 +0000

Dear Florian,

Thank you very much for the explanation.
Yes I had the "black point compensation" box ticked in dispcalGUI.
To understand what was going on I had to look at the source code.
When the user selects "black point compensation" dispcalGUI applies it to the 
values and creates a temporary .ti3 which is then used by colprof to generate 
the profile.
Then, after the run, this temporary .ti3 is deleted and only the original one 
is stored.
It would be nice if the temporary .ti3, with the black point compensation 
applied, could also be stored along with the original one.

I'm familiarizing myself with Argyllcms command line tools because the next 
step is to calibrate an inkjet printer.

Best regards,

On 31/01/2013, at 19:40, Florian Höch <lists+argyllcms@xxxxxxxxx> wrote:

> Hi,
> it looks like the differences exist because the profile created by
> dispcalGUI has black point compensation (there's a checkbox in
> dispcalGUI under profiling settings to turn it on or off).
> Am 31.01.2013 18:23, schrieb Hugo Meinedo:
>> Hi,
>> I'm running colprof in the terminal (Mac) using a .ti3 generated during
>> a dispcalGUI calibration & profile run of my LG 24" LCD monitor.
>> The resulting .icc does not match the one generated during the
>> dispcalGUI run and also the output messages (values) do not match the
>> ones in dispcalGUI log file.
>> Am I doing something wrong or might this be a bug ?
>> I noticed this because the two .icc profiles give very different results
>> for some colors.
>> In attachment I send the original dispcalGUI directory located inside
>> ~Library/Application Support/dispcalGUI/storage/ which has the original
>> .ti3 and the original .icc.
>> I also send the corresponding dispcalGUI log file.
>> Then I send the log obtained when running, in the terminal, the colprof
>> command and the generated .icc.
>> Any help would be greatly appreciated.
>> Best regards,
>> Hugo
> -- 
> Florian Höch

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