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Algorithms for Visibility Computation on Terrains: A Survey

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  • Leila Floriani
  • Paola Magillo

Abstract

Several environment applications require the computation of visibility information on a terrain. Examples are optimal placement of observation points, line-of-sight communication, and computation of hidden as well as scenic paths. Visibility computations on a terrain may involve either one or many viewpoints, and range from visibility queries (for example, testing whether a given query point is visible), to the computation of structures that encode the visible portions of the surface. In this paper, the authors consider a number of visibility problems on terrains and present an overview of algorithms to tackle such problems on triangulated irregular networks and regular square grids.

Suggested Citation

  • Leila Floriani & Paola Magillo, 2003. "Algorithms for Visibility Computation on Terrains: A Survey," Environment and Planning B, , vol. 30(5), pages 709-728, October.
    • Handle: RePEc:sae:envirb:v:30:y:2003:i:5:p:709-728
    DOI: 10.1068/b12979
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