An Error Metric for Layered Environment Map Impostors

Information

• Publication Type: Technical Report
• Workgroup(s)/Project(s):
  • UrbanViz
• Date: February 2002
• Number: TR-186-2-02-04
• Keywords: impostors, real-time rendering, virtual

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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BibTeX

@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.",
  month =      feb,
  number =     "TR-186-2-02-04",
  address =    "Favoritenstrasse 9-11/E193-02, A-1040 Vienna, Austria",
  institution = "Institute of Computer Graphics and Algorithms, Vienna
               University of Technology ",
  note =       "human contact: technical-report@cg.tuwien.ac.at",
  keywords =   "impostors, real-time rendering, virtual",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/2002/TR-186-2-02-04/",
}