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Simplification of data for representing an environment, based on the heights and elevations of polyhedrons that define structures represented in the data
Simplification of data for representing an environment, based on the heights and elevations of polyhedrons that define structures represented in the data
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机译:基于定义数据中表示的结构的多面体的高度和高程,简化表示环境的数据
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摘要
A technique for simplifying structure data for representing an environment. Polyhedrons can make up structure data used in an application such as modeling, visualization, and navigation. Consequently, the operations that are performed on the data often involve determining, for each polyhedron that defines a structure such as a building, whether the polyhedron obstructs a line-of-sight line between a first point in space being considered in the application and a second point. In order to determine whether a polyhedron obstructs a line-of-sight line, a data-processing system operating on the structure data must determine whether any walls of the polyhedron intersect the line. Thus, the more polyhedrons there are or the more vertices that are in each polyhedron, the more walls there are, and the more intersection checks are required, thereby adding to the computations. The disclosed technique reduces the number of walls by simplifying objects that make up the structure data.
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