Morphology-driven simplification and multiresolution modeling of terrains
Morphology-driven simplification and multiresolution modeling of terrains
复制标题
形态驱动的地形简化和多分辨率建模
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
E. Puppo
中科院分区：
文献类型：
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作者：
E. Danovaro;L. Floriani;P. Magillo;M. M. Mesmoudi;E. Puppo
我们提出了一种对表示为TIN的地形进行简化和多分辨率建模的技术。我们的目标是保持地形的形态结构，在由此产生的多分辨率模型。为了这个目的，我们延长莫尔斯理论，开发的连续和可微的功能，分段线性函数的情况下。我们将TIN分解为具有统一形态属性的区域（如山谷、盆地等）。由关键线和关键点组成的网络分隔开。我们描述了一个算法来计算上述分解和临界网，和一个三角网简化算法，保留它们。在此基础上，我们建立了一个多分辨率的地形模型，它提供了一个表示的关键功能在任何细节水平。
We propose a technique for simplification and multiresolution modeling of a terrain represented as a TIN. Our goal is to maintain the morphological structure of the terrain in the resulting multiresolution model. To this aim, we extend Morse theory, developed for continuous and differentiable functions, to the case of piecewise linear functions. We decompose a TIN into areas with uniform morphological properties (such as valleys, basins, etc.) separated by a network of critical lines and points. We describe an algorithm to compute the above decomposition and the critical net, and a TIN simplification algorithm that preserves them. On this basis, we build a multiresolution terrain model, which provides a representation of critical features at any level of detail.