Voronoi Diagrams for a Transportation Network on the Euclidean Plane
Voronoi Diagrams for a Transportation Network on the Euclidean Plane
复制标题
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:
影响因子:
--
通讯作者:
Kyung
中科院分区:
文献类型:
--
作者:
S. Bae;Kyung
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.