Representation and visualization of terrain surfaces at variable resolution
Representation and visualization of terrain surfaces at variable resolution
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DOI：
10.1007/s003710050099
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发表时间：
1997-07
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影响因子：
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通讯作者：
Paolo Cignoni;E. Puppo;Roberto Scopigno
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文献类型：
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作者：
Paolo Cignoni;E. Puppo;Roberto Scopigno
我们提出了一种以可变分辨率管理离散地形表面表示的新方法，该方法基于编码分解平面域的三角测量的细化或简化历史的统一模型。提出了一种有效的数据结构，该结构是通过将包含历史的所有三角形的模型解释为嵌入三维空间的细胞复合体而获得的。该模型的一个主要特征是能够根据与应用相关的阈值函数，在域上以分辨率变量有效地提供表面表示。给出了真实世界数据的实验结果，并讨论了在飞行模拟中的应用。
We present a new approach for managing the representation of discrete topographic surfaces at variable resolution, which is based on a unified model encoding a history of either refinement or simplification of a triangulation decomposing a plane domain. An efficient data structure is proposed, which is obtained by interpreting the model containing all triangles of the history as a cell complex embedded in three-dimensional space. A major feature of the model is the ability to provide efficiently a representation of the surface at 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.