[argyllcms] Re: dispcal output profile as preconditioning profile for targen

  • From: Pascal de Bruijn <pmjdebruijn@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Mon, 28 Dec 2009 11:59:31 +0100

On Mon, Dec 28, 2009 at 10:54 AM, Graeme Gill <graeme@xxxxxxxxxxxxx> wrote:
> Pascal de Bruijn wrote:
>> This does beg the following question... Does preconditioning targen
>> have any (theoretical) merit (as it seemed like a good idea)? Or does
>> it only show with low patch counts?
> In theory it makes the default full spread patches more efficient.
> Since you're not using this though (-I flag, and the -A isn't doing
> anything with perceptual space body centered cubic), it won't make
> any difference.
> argyll-targen -v -d 3 -G -e 8 -g 16 -f 324 -c ${FILENAME}_tmp.icc
> would make use of the pre-conditioning profile (you're better without -s I
> think since OFPS will distribute test points more effectively).

Right, but the documentation says:

"Note that this will only have an effect if an algorithm that uses the
perceptual placement, such as -R -I, or a -A value > 0.0."

I guess that's not true anymore?

Pascal de Bruijn

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