[argyllcms] Re: Black turning down problem (the -r trick)

  • From: Elena [service address] <1007140@xxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Fri, 14 Jan 2011 15:06:46 +0100

Hello Nikolay

On 13-Jan-2011, Nikolay Pokhilchenko wrote:
> May be the (an example)
> targen -d4 -G -fxxxx -c"preliminary.icc" -A1 -f0,0,0,25 NewTarget
> will help to automate the process? As I understood the targen behavior, it 
> will optimize the chart by device responcse 
> curvature first of all (if the -A parameter is 1 - default for preliminary 
> profile use.
> The -f key can help to filter out dark patches.
> As I understood the colprof, it computes different error values for the 
> different device space (or color space?) points. And it 
> can do this not only by repeated patches, but by adjacent patches too. So I 
> didn't see the need to duplicate the patches. The 
> higher number of patches per volume unit can be enough. The colprof will be 
> able take this into account and account the 
> errors more precisely. Am I mistaken?

I'm not aware of those internals. I was speaking of duplicate patches because
sometimes (depending on the print process) the same patch printed at extreme
left or extreme right may be slightly different.


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