[argyllcms] Re: testing printer profile with a set of XYZ colours

  • From: Gerhard Fuernkranz <nospam456@xxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Sat, 29 Jan 2011 12:57:07 +0100

Am 29.01.2011 12:08, schrieb Gerhard Fuernkranz:
> Am 29.01.2011 11:29, schrieb Klaus Karcher:
>> I'm not quite sure what you are after. If it's just the profile you
>> want to test, I'd skip the printing and measurement part and just
>> complete ther "round trip" with another xicclu call. Otherwise you
>> bring additional unknowns into play (printer repeatability,
>> measurement uncertainty)
> Klaus, well, even if the round trip numbers are very good, the profile
> may still not fit with the actual device behavior. Eventually only the
> printed result counts, IMO. But of course, even the printed result can
> only be measured with some uncertainty, and one must blame the profile

should read "... must not..." of course

> and/or printer for those parts of the errors which are actually
> measurement errors.
> And separating the (random) repeatability errors of the printer and the
> bias introduced by the profile (i.e. the unability of the profile to
> model the "average behaviour" of the printer) is not easy either.
> Regards,
> Gerhard

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