Voronoi diagrams with respect to criteria on vision information

Tetsuo Asano, Naoki Katoh, Hisao Tamaki, Takeshi Tokuyama

Research output: Contribution to journalArticlepeer-review

Abstract

Voronoi diagrams for a set of geometric objects is a partition of the plane (or space in higher dimensions) into disjoint regions each dominated by some given object under a predetermined criterion. In this paper we are interested in various measures associated with criteria on goodness of an input line segment with respect to each point in the plane as the "point of view." These measures basically show how well a segment or information displayed on the segment can be seen from the point. Mathematically, the measures are defined in terms of the shapes of the triangle determined by the point and the line segment. We study the combinatorial and algorithmic complexities of those Voronoi diagrams. We also study an associated optimization problem: find a point that maximizes the smallest measure value over the measures with respect to all the given line segments. We give sufficient conditions for an optimal point to lie on a Voronoi edge and present a heuristic optimization algorithm for those measures having this property.

Original languageEnglish
Pages (from-to)149-164
Number of pages16
JournalJapan Journal of Industrial and Applied Mathematics
Volume25
Issue number2
DOIs
Publication statusPublished - 2008 Jun

Keywords

  • Algorithms
  • Aspect ratio
  • Computational geometry
  • Measure on triangles
  • Minimal height
  • Optimization
  • Triangle
  • Visual angle
  • Voronoi diagram

ASJC Scopus subject areas

  • Engineering(all)
  • Applied Mathematics

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