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Dynamically Maintaining a Hierarchical Planar Voronoi Diagram Approximation

机译:动态维护分层平面Voronoi图逼近

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An approach for computing a hierarchical approximation of planar Voronoi diagrams for different site shapes (points, line-segments, curve-arc segments, ...) and different distance functions (Euclidean metrics, convex distance functions, ...) was presented in [3]. The approach is based on the Voronoi-Quadtree, a quadtree data structure from which a polygonal approximation, represented by a DCEL structure, of the associated Voronoi region boundaries can be computed at different levels of detail. In this paper we describe efficient algorithms for dynamically maintaining, under the insertion or deletion of sites, the Voronoi-Quadtree and the corresponding DCEL structure representing an approximation of a Generalized Voronoi diagram.
机译:提出了一种针对不同站点形状(点,线段,曲线弧段等)和不同距离函数(欧几里得度量,凸距离函数等)计算平面Voronoi图的分层近似方法。 [3]。该方法基于Voronoi-Quadtree,这是一种四叉树数据结构,从中可以以不同的细节级别计算关联的Voronoi区域边界的多边形近似值(由DCEL结构表示)。在本文中,我们描述了在站点的插入或删除下动态维护Voronoi-Quadtree和相应的DCEL结构(代表广义Voronoi图的近似值)的有效算法。

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