Re: Does "Hue", "Saturation", "Value" layer modes need HSV? How about CIE LCH instead?

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On Mon, Aug 3, 2009 at 5:13 AM, Martin Nordholts <enselic@xxxxxxxxx> wrote:
The input I've gotten so far removed any remaining doubt about porting
those layer modes to LCH, so I've done that now:

commit 18603ac192493296b191197a3e2b62c710398afd
Author: Martin Nordholts <martinn@xxxxxxxxxxxxx>
Date:   Sun Aug 2 21:35:10 2009 +0200

  Bug 401754 – Port Hue, Saturation, Value to CIE LCH

  When using GEGL for the projection, use CIE LCH for the Hue,
  Saturation and Value layer modes, just as we already do for the Color
  layer mode. The Value layer mode will later be renamed to Lightness
  since that is the semantics it has now.

oh, BTW, since LAB already separates the color element (AB) from lightness, it's probably better to just use LAB for that -- it should produce identical results, faster.

David
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