[argyllcms] Re: Ink-limiting an existing profile
- From: Jan-Peter Homann <homann@xxxxxxxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx, Lcms-user <Lcms-user@xxxxxxxxxxxxxxxxxxxxx>
- Date: Sun, 10 Sep 2006 11:51:30 +0200
Hello Oliver
(cc. lcms user list)
Ink-limiting is actually not adressed directly by the ICC-specs.
Even Adobe Creative Suite 2 or Enfocus Pitstop, can not adress this problem.
As more or less all Open Source applications are using littleCMS as CMM,
it would make sense to realize this functionality through littleCMS.
A workflow would be:
- define an output CMYK colorspace e.g. ISOcoated
- Define an Inklimit
- The image or the CMYK-content of an PDF-file must than colormanaged
through littleCMS with this settings.
I´m not an programmer, but if we re able to inklimit complete images, it
should theoreticly be possible also to inklimit zje Lab2CMYK tables og
an ICC-profile with little CMS.
The algorithm should exactly the same.
:-) Jan-Peter
Oliver Schulz wrote:
For recalculating an existing profile with new TAC, You need a complete
new calculation of the the profile.
Damn, that's what i wanted to avoid. :-)
How do color-managed applications which have in ink-limit setting
(Photoshop, i think) do this? Also, the littlecms tifficc converter
allows to set both a target profile and an ink limit (seems to work
fine), so it must be possible somehow to ink-limit a profile.
Oliver
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Jan-Peter Homann ------------- mobile +49 171 54 70 358
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