2013 | OriginalPaper | Buchkapitel
Terrain Visibility with Multiple Viewpoints
verfasst von : Ferran Hurtado, Maarten Löffler, Inês Matos, Vera Sacristán, Maria Saumell, Rodrigo I. Silveira, Frank Staals
Erschienen in: Algorithms and Computation
Verlag: Springer Berlin Heidelberg
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We study the problem of visibility in polyhedral terrains in the presence of multiple viewpoints. We consider three fundamental visibility structures: the visibility map, the colored visibility map, and the Voronoi visibility map. We study the complexity of each structure for both 1.5D and 2.5D terrains, and provide efficient algorithms to construct them. Our algorithm for the visibility map in 2.5D terrains improves on the only existing algorithm in this setting.