Real-Time Rendering of Globally Illuminated Soft Glossy Scenes With Directional Light Maps

Heinrich Hey, Werner Purgathofer
Real-Time Rendering of Globally Illuminated Soft Glossy Scenes With Directional Light Maps
TR-186-2-02-05, March 2002 [ paper]
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Abstract

Directional light maps allow to display globally illuminated static scenes with soft glossy surfaces at interactive frame-rates. They store the spatially and directionally varying incoming light at a surface in form of textures for a global set of incoming light directions. The directional light maps can be generated in a photon tracing preprocessing step. During a walkthrough they are used to render the globally illuminated surfaces with graphics hardware.

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@techreport{Hey-2001-Imp,
  title =      "Real-Time Rendering of Globally Illuminated Soft Glossy
               Scenes With Directional Light Maps",
  author =     "Heinrich Hey and Werner Purgathofer",
  year =       "2002",
  abstract =   "Directional light maps allow to display globally illuminated
               static scenes with soft glossy surfaces at interactive
               frame-rates. They store the spatially and directionally
               varying incoming light at a surface in form of textures for
               a global set of incoming light directions. The directional
               light maps can be generated in a photon tracing
               preprocessing step. During a walkthrough they are used to
               render the globally illuminated surfaces with graphics
               hardware.",
  address =    "Favoritenstrasse 9-11/186, A-1040 Vienna, Austria",
  institution = "Institute of Computer Graphics and Algorithms, Vienna
               University of Technology",
  note =       "human contact: technical-report@cg.tuwien.ac.at",
  month =      mar,
  number =     "TR-186-2-02-05",
  keywords =   "light map, hardware acceleration, interactive walkthrough,
               glossy surface, global illumination, real-time rendering",
  URL =        "http://www.cg.tuwien.ac.at/research/publications/2002/Hey-2001-Imp/",
}