We present a new approach for managing the representation of discrete topographic surfaces at variable resolution. It is based on a unified model encoding a .istory of either refinement or simplification of a triangulation decomposing a plane domain. An efficient data structure is proposed. It is obtained by interpreting the model containing all triangles of the history as a cell complex embedded in 3D space. A major feature of the model is its ability to provide efficiently a representation of the surface at a resolution variable over the domain according to an application-dependent threshold function. Experimental results on real-world data are presented, and applications to flight simulation are discussed.

Representation and visualization of terrain surfaces at variable resolution

Puppo E.;
1997-01-01

Abstract

We present a new approach for managing the representation of discrete topographic surfaces at variable resolution. It is based on a unified model encoding a .istory of either refinement or simplification of a triangulation decomposing a plane domain. An efficient data structure is proposed. It is obtained by interpreting the model containing all triangles of the history as a cell complex embedded in 3D space. A major feature of the model is its ability to provide efficiently a representation of the surface at a resolution variable over the domain according to an application-dependent threshold function. Experimental results on real-world data are presented, and applications to flight simulation are discussed.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/1106446
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