[argyllcms] AW: Re: shaper+matrix

  • From: Hermann-Josef Röser <posts@xxxxxxxxxxxxxxxxxxxxxxxxx>
  • To: <argyllcms@xxxxxxxxxxxxx>
  • Date: Thu, 18 Mar 2021 13:54:46 +0100

Thank you for your answer and the link.

Hermann-Josef

--- Begin Message ---
  • From: "Graeme Gill" <graeme@xxxxxxxxxxxxx>
  • To: <argyllcms@xxxxxxxxxxxxx>
  • Date: Wed, 17 Mar 2021 23:27:45 +0100
Hermann-Josef Röser wrote:

Hi,

following the recommendation to start in colprof with shaper+matrix, I
would
like to know, what this means mathematically. I think I understand how
3DLUTs and matrices work. But what does "shaper" mean? Is there a
reference
to learn more about this?

more technical detail is in the ICC specifications:
<http://www.color.org/specification/ICC1v43_2010-12.pdf>.

"shaper" means a set of per channel 1D lookup tables that shape
each channel. Typically these will be of high resolution compared
to cLuts (i.e. 256 or 1024 entries etc.)

Cheers,
        Graeme Gill.

--- End Message ---

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