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Re: Extending plot types - adding a CIE 1931 type diagram

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Hi,

On 07.08.2013 22:24, hvezdny.cestovatel@gmail.com wrote:

> So the task would be:
> 1. generate the background color image with the right coordinates, so that
> 2. plot points and curves into that plot as usual, taking advance of the coordinate system of the CIE x-y diagram

If it is merely plotting over a background image it is already possible,
as Ethan said. Or do you also intend some RGB to x-y(-Y) or even
spectrum to x-y(-Y) conversion? This would require to include the RGB to
XYZ matrices and/or the CIE colour matching functions.

Another question would be whether it should be CIE 1931 2-deg standard
observer only or also include the CIE 1964 10-deg standard observer. CIE
1931 seems to be outdated although it is still used for the definition
of sRGB (the differences in the image would be small anyway).


Best wishes,

Ingo

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Thread

Extending plot types - adding a CIE 1931 type diagram hvezdny.cestovatel@gmail.com - 2013-08-07 13:24 -0700
  Re: Extending plot types - adding a CIE 1931 type diagram sfeam <sfeam@users.sourceforge.net> - 2013-08-07 18:51 -0700
  Re: Extending plot types - adding a CIE 1931 type diagram Ingo Thies <ingo.thies@gmx.de> - 2013-08-08 10:30 +0200
    Re: Extending plot types - adding a CIE 1931 type diagram hvezdny.cestovatel@gmail.com - 2013-08-16 02:47 -0700

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