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

[Kai-Uwe Behrmann]

Am 30.01.2012 09:09, schrieb Graeme Gill:
> Michael Sweet wrote:
>> I know I have
>> been discouraged that ICC tables are based on a linear grid which requires a lot of grid points
>> instead of having most of them "near the edges" where the higher sampling is needed.
> I'm not sure what you mean. ICC profiles generally use the per-channel input
> tables to distribute the grid in some "optimal" fashion.
>
> [Your assumption about the edges is not necessarily true either
>  - see "Improved Perceptual Uniformity of Sampling in Color Look-up
> Tables" by Rohit A. Patil and Maxim W. Derhak, pp 238, 18th Color Imaging
> Conference, 2010]

The original point was, that we can use only one profile in CUPS/IPP for
describing a printer and its calibration, which was Michaels idea. This
profile has to have a mapping from  PCS to n-channel in its tables,
which is prohibitively large. See my former email in this thread.

kind regards
Kai-Uwe