[argyllcms] Re: Post-editing white and black point of a icc-profile
- From: Daniel Pfeiffer <daniel@xxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Mon, 6 Jan 2014 11:59:38 +0100
Hi,
thanks for the replies and a happy new year!
In Profilemaker Profile-Editor, there is a option to alter the white point
of icc-profiles. Somethimes, this can be useful if a different stock of
paper comes with a slightly more or less yellowish tint without
re-profiling the substrate. To do so, I take a number of readings on the
stock, average the results and enter them as new white-point. This helped
me in the past for some minor substrate-issues.
The other thing i'm thinking about is to reduce the number of patches in
testcharts when profiling substrates like ceramic, glass or textiles.
On objects like bottles, cans or boxes with very little space for printing
charts on, i would prefer to take multiple spot readings on black and
substrate to enter them before or after the profiling process rather than
waste space for redundant b/w patches in a test chart.
Best regards,
Daniel Pfeiffer
2014/1/6 Graeme Gill <graeme@xxxxxxxxxxxxx>
> Daniel Pfeiffer wrote:
>
> Hi,
>
> > is it there any way utilizing argyllcms tools to edit the white and or
> > black point of a existing printer profile?
>
> Not currently. The emphasis in ArgyllCMS is characterizing a devices
> actual behavior, not tweaking it manually.
>
> > Overriding the measured values with defined white/black values at the
> time
> > of profile creation could be another useful option.
>
> There is no easy way of doing this. The white and black points are
> typically the result of fitting a model to all the measured data points.
>
> > My Application is textile printing on slightly different colored
> substrates
> > of the same kind.
>
> Perhaps it would help if you describe the problem you are trying to solve.
>
> Graeme Gill.
>
>
>
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