[Openicc] Color Management for Ubuntu

Robert Krawitz rlk at alum.mit.edu
Tue May 3 17:54:09 PDT 2011

On Tue, 3 May 2011 18:36:40 -0400, Ann McCarthy wrote:
> Your statement that you are "working in devicespace, and do not have a
> profile in place on the system for the device being tested." is curious.
> Please explain how you can be "working in device space" in which I gather
> you are viewing some kind of print representation on a display - yet you do
> not have a profile for the print system which would be necessary for
> rendering the print space content to a display? Perhaps if you described
> more of your workflow ...
> I am not surprised that you have direct experience with vendors who
> expressly intend to make color management and profile use hard. My intention
> is that color management should be clear and simple, as complicated as
> necessary and not one stitch more. In order to get there, users such as
> yourself have to be willing to describe their abstracted workflow
> requirements, not mired in the muck of workarounds they have previously been
> forced into by current system limitations.

Edmund (and I) are effectively driver/RIP vendors in this context.  I
will defer to Edmund on the question of specific workflows, but we
need to bypass any and all color manipulations in the OS (including
CUPS) for calibration purposes.

But we have some other users doing very oddball things: non-standard
inks, which in at least a few cases have been things that we don't
recognize as "inks" at all; they're using printers as chemical
deposition machines.  So they actually need to place the drops very
precisely, and Gutenprint does offer that kind of control.  It's
important to me that they be able to do such unusual things, which of
necessity means bypassing any color management in the OS.

Robert Krawitz                                     <rlk at alum.mit.edu>

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom  --  http://ProgFree.org
Project lead for Gutenprint   --    http://gimp-print.sourceforge.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton

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