An Error Metric for Layered Environment Map Impostors

Stefan Jeschke, Michael Wimmer
An Error Metric for Layered Environment Map Impostors
TR-186-2-02-04, February 2002 [ Technical report]
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Abstract

Impostors are image-based primitives commonly used to replace complex geometry in order to accelerate the rendering of large virtual environments. This paper describes a “layered impostor technique” used for representing distant scene-parts when seen from a bounded viewing region. A special layer placement is derived which bounds the geometric error introduced by parallaxes to a defined value. In combination with a special technique for image generation, a high-quality impostor representation without image artifacts can be obtained.

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@techreport{TR-186-2-02-04,
  title =      "An Error Metric for Layered Environment Map Impostors",
  author =     "Stefan Jeschke and Michael Wimmer",
  year =       "2002",
  abstract =   "Impostors are image-based primitives commonly used to
               replace complex geometry in order to accelerate the
               rendering of large virtual environments. This paper
               describes a “layered impostor technique” used
               for representing distant scene-parts when seen from a
               bounded viewing region. A special layer placement is derived
               which bounds the geometric error introduced by parallaxes to
               a defined value. In combination with a special technique for
               image generation, a high-quality impostor representation
               without image artifacts can be obtained.",
  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 =      feb,
  number =     "TR-186-2-02-04",
  keywords =   "impostors, real-time rendering, virtual",
  URL =        "http://www.cg.tuwien.ac.at/research/publications/2002/TR-186-2-02-04/",
}