Realistic Rendering of Birefringency in Uniaxial Crystals

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• Publication Type: Journal Paper with Conference Talk
• Lecturer: Andrea Weidlich
• Keywords: polarization, crystals, Birefringence

This paper contains the complete derivation of the Fresnel coefficients for birefringent transparent materials, as well as for the direction cosines of the extraordinary ray and the Mueller matrices necessary to describe polarisation effects. The formulas we derive can be directly used in a ray based renderer, and we demonstrate these capabilities in test scenes.

@article\{weidlich_2007_rrbuc,
  title =      "Realistic Rendering of Birefringency in Uniaxial Crystals",
  author =     "Andrea Weidlich and Alexander Wilkie",
  year =       "2008",
  abstract =   "In this paper we derive the complete set of formulas which
               is needed to generate physically plausible images of
               uniaxial crystals. So far no computer graphics publication
               contains all the formulas one needs to compute the
               interaction of light with such crystals in a form that is
               useable by a graphics application, especially if a
               polarisation-aware rendering system is being used.  This
               paper contains the complete derivation of the Fresnel
               coefficients for birefringent transparent materials, as well
               as for the direction cosines of the extraordinary ray and
               the Mueller matrices necessary to describe polarisation
               effects. The formulas we derive can be directly used in a
               ray based renderer, and we demonstrate these capabilities in
               test scenes.",
  pages =      "6:1--6:12",
  month =      mar,
  number =     "1",
  journal =    "ACM Transactions on Graphics",
  volume =     "27",
  keywords =   "polarization, crystals, Birefringence",
  URL =        "http://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2007_rrbuc/",
}