Hierarchical Visibility in Terrains

  • A. James Stewart
Part of the Eurographics book series (EUROGRAPH)


This paper describes a hierarchical visibility technique that significantly accelerates terrain rendering. With this technique, large parts of the terrain that are hidden from the viewpoint are culled, thus avoiding the expense of uselessly sending them down the graphics pipeline (only to find in the z—buffer step that they are hidden). The hierarchical visibility technique has been implemented in a multiresolution terrain rendering algorithm and experimental results show very large speedups in some situations.


Visibility Test Horizon Point Occlusion Region Triangulate Irregular Network Constrain Delaunay Triangulation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag/Wien 1997

Authors and Affiliations

  • A. James Stewart
    • 1
  1. 1.Dynamic Graphics Project Department of Computer ScienceUniversity of TorontoCanada

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