[argyllcms] Re: ArgyllCMS V1.1.0 RC1 is now available

  • From: Martin Weberg <martin.weberg@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Tue, 10 Nov 2009 07:57:30 +0100


2009/11/9 Graeme Gill <graeme@xxxxxxxxxxxxx>:
>> OK - maybe my inkjet's unusual there, then - but it seems as though the
>> a/b loci will curve significantly, and even double back on themselves while
>> L* continues merrily decreasing.  See:
>> http://blackfiveimaging.co.uk/temp/Tesco1107_InputVsLab.jpg
>> and
>> http://blackfiveimaging.co.uk/temp/Tesco1107_abPlane.jpg
> Right, but why is this a problem ? Non-monotonicity in the a*b* plane
> doesn't imply non-monotonicity in L*a*b*, and the linearization will
> take care of making the locus uniform, while profiling
> takes care of what each colorant and the combinations of colorant
> are doing. [i.e. do you have an example of this causing a problem
> or some theory as to how this can cause a problem ? ]

If for some reason I want to print unprofiled (yet calibrated), those
"hue-hooks" at the end could be a potential problem. Of course then I
could override defaults using -x option.

Martin Weberg

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