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Power Diagrams: Properties, Algorithms and Applications

Aurenhammer, F.·1987·SIAM Journal on Computing

Abstract

The power pow $(x,s)$ of a point x with respect to a sphere s in Euclidean d-space $E^d $ is given by $d^2 (x,z) - r^2 $, where d denotes the Euclidean distance function, and z and r are the center and the radius of s. The power diagram of a finite set S of spheres in $E^d $ is a cell complex that associates each $s \in S$ with the convex domain $\{ x \in E^d | {\operatorname{pow}} (x,s) < {\operatorname{pow}} (x,t), {\text{ for all }} t \in S - \{ s\} \}$. The close relationship to convex hulls and arrangements of hyperplanes is investigated and exploited. Efficient algorithms that compute the power diagram and its order-k modifications are obtained. Among the applications of these results are algorithms for detecting k-sets, for union and intersection problems for cones and paraboloids, and for constructing weighted Voronoi diagrams and Voronoi diagrams for spheres. Upper space bounds for these geometric problems are derived.

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Metadata

Authors
Aurenhammer, F.
Venue
SIAM Journal on Computing
Published
1987-02
Volume
16
Issue
1
Pages
78-96
ISSN
  • 0097-5397 (ISSN-L)
  • 1095-7111
OpenAlex
W2048475323
Cited by
832
References
10
FWCI
10.91
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Power Diagrams: Properties, Algorithms and Applications. https://app.cochat.ai/papers/10.1137/0216006
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Aurenhammer, F. (1987). Power Diagrams: Properties, Algorithms and Applications. SIAM Journal on Computing. https://doi.org/10.1137/0216006

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