Automatic impostor placement for guaranteed frame rates and low memory requirements

  • Authors:
  • Stefan Jeschke;Michael Wimmer;Heidrun Schumann;Werner Purgathofer

  • Affiliations:
  • Vienna University of Technology;Vienna University of Technology;University of Rostock;Vienna University of Technology

  • Venue:
  • Proceedings of the 2005 symposium on Interactive 3D graphics and games
  • Year:
  • 2005

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Abstract

Impostors are image-based primitives commonly used to replace complex geometry in order to reduce the rendering time needed for displaying complex scenes. However, a big problem is the huge amount of memory required for impostors. This paper presents an algorithm that automatically places impostors into a scene so that a desired frame rate and image quality is always met, while at the same time not requiring enormous amounts of impostor memory. The low memory requirements are provided by a new placement method and through the simultaneous use of other acceleration techniques like visibility culling and geometric levels of detail.