A Problem with the Use of XYZ Colour Space for Photorealistic Rendering Computations

Christiane Ulbricht, Alexander Wilkie
A Problem with the Use of XYZ Colour Space for Photorealistic Rendering Computations
In Third European Conference on Colour in Graphics, Imaging, and Vision, pages 435-437. 2006.
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Abstract

CIE XYZ colour space is sometimes recommended in literature for photorealistic rendering computations because it allows one to simultaneously handle all perceivable colours at much lower computational cost than by using spectral rendering.

In this paper we show that XYZ is actually a poor choice for such computations, since it is not closed under the component-wise multiplication which is a typical operation in a rendering system. We also discuss why this rather obvious fact has not received much attention yet, and give pointers to alternative solutions.

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@inproceedings{ulbricht-2006apw,
  title =      "A Problem with the Use of XYZ Colour Space for
               Photorealistic Rendering Computations",
  author =     "Christiane Ulbricht and Alexander Wilkie",
  year =       "2006",
  abstract =   "CIE XYZ colour space is sometimes recommended in literature
               for photorealistic rendering computations because it allows
               one to simultaneously handle all perceivable colours at much
               lower computational cost than by using spectral rendering.  
               In this paper we show that XYZ is actually a poor choice for
               such computations, since it is not closed under the
               component-wise multiplication which is a typical operation
               in a rendering system. We also discuss why this rather
               obvious fact has not received much attention yet, and give
               pointers to alternative solutions.",
  pages =      "435--437",
  booktitle =  "Third European Conference on Colour in Graphics, Imaging,
               and Vision",
  publisher =  "CGIV",
  URL =        "http://www.cg.tuwien.ac.at/research/publications/2006/ulbricht-2006apw/",
}