[Openicc] printer, driver, CUPS, PPD, printing GUI, ICC-profiles, colord, Oyranos, taxi....

Robert Krawitz rlk at alum.mit.edu
Thu Jan 26 06:28:15 PST 2012


On Thu, 26 Jan 2012 14:55:50 +0100 (CET), Kai-Uwe Behrmann wrote:
> Am 26.01.12, 08:31 -0500 schrieb Robert Krawitz:
>> On Thu, 26 Jan 2012 09:27:27 +0100 (CET), Kai-Uwe Behrmann wrote:
>>> Am 25.01.12, 21:28 +0100 schrieb edmund ronald:
>>>> If the calibration data (presets) are dumped in an XML file, the current
>>>> Gutenprint iteration should be able to do the job with very little software
>>>> engineering. Anything else takes us into utopia.
>>>
>>> What is the size of a typical Gutenprint XML?
>>
>> It depends.  Worst case, if you wanted to express a lot of things as
>> 16-bit LUTs, I could see it reaching several megabytes.  More likely, in
>> the range of 10K, but it's going to depend upon exactly how finely you
>> want to calibrate things.
>>
>> Honestly, even several megabytes strikes me as pretty small potatoes
>> these days.
>
> While discussing about sizes, we have to consider distributors as
> well. But given that amount of data is much less than equivalent
> n-channel profiles, it is the only choice we have at the moment.

If we used 8-bit LUTs, we'd probably be looking at tens of kilobytes.

Multiplying this by number of printers and combinations of papers and
resolutions, I can see the point.
-- 
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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