Voronoi Diagrams for a Transportation Network on the Euclidean Plane

Voronoi Diagrams for a Transportation Network on the Euclidean Plane
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欧几里得平面上交通网络的 Voronoi 图

DOI:
10.1142/s0218195906001963
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发表时间:
2006
期刊:
Int. J. Comput. Geom. Appl.
影响因子:
--
通讯作者:
Kyung
Kyung
中科院分区:
--
文献类型:
--
作者:
S. Bae;Kyung

文献摘要

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本文研究了欧几里得平面上交通网络的Voronoi图的几何性质和算法性质。在存在交通网络的情况下,距离是以最短(时间)路径的长度来衡量的。在这样做的过程中,我们引入了一根针,一个广义的沃罗诺伊位点。我们提出了一种O(nm2 + m3 + nm log n)算法来计算欧几里得平面上运输网络的Voronoi图,其中n是给定站点的数量,m是给定运输网络的复杂性。此外,在交通网络中的道路只有恒定数量的方向和速度的情况下,我们提出了两种算法;一个需要O(nm + m2 + n log n)时间和O(m(n + m))空间,另一个需要O(nm log n + m2log m)时间和O(n + m)空间。
This paper investigates geometric and algorithmic properties of the Voronoi diagram for a transportation network on the Euclidean plane. In the presence of a transportation network, the distance is measured as the length of the shortest (time) path. In doing so, we introduce a needle, a generalized Voronoi site. We present an O(nm2 + m3 + nm log n) algorithm to compute the Voronoi diagram for a transportation network on the Euclidean plane, where n is the number of given sites and m is the complexity of the given transportation network. Moreover, in the case that the roads in a transportation network have only a constant number of directions and speeds, we propose two algorithms; one needs O(nm + m2 + n log n) time with O(m(n + m)) space and the other O(nm log n + m2log m) time with O(n + m) space.