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Inscribing or Circumscribing a Histogon to a Convex Polygon

Authors Jaehoon Chung, Sang Won Bae , Chan-Su Shin , Sang Duk Yoon , Hee-Kap Ahn



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Author Details

Jaehoon Chung
  • Department of Computer Science and Engineering, Pohang University of Science and Technology, Korea
Sang Won Bae
  • Division of Computer Science and Engineering, Kyonggi University, Suwon, Korea
Chan-Su Shin
  • Division of Computer Engineering, Hankuk University of Foreign Studies, Seoul, Korea
Sang Duk Yoon
  • Department of Service and Design Engineering, SungShin Women’s University, Seoul, Korea
Hee-Kap Ahn
  • Graduate School of Artificial Intelligence, Department of Computer Science and Engineering, Pohang University of Science and Technology, Korea

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Jaehoon Chung, Sang Won Bae, Chan-Su Shin, Sang Duk Yoon, and Hee-Kap Ahn. Inscribing or Circumscribing a Histogon to a Convex Polygon. In 42nd IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2022). Leibniz International Proceedings in Informatics (LIPIcs), Volume 250, pp. 13:1-13:16, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2022)
https://doi.org/10.4230/LIPIcs.FSTTCS.2022.13

Abstract

We consider two optimization problems of approximating a convex polygon, one by a largest inscribed histogon and the other by a smallest circumscribed histogon. An axis-aligned histogon is an axis-aligned rectilinear polygon such that every horizontal edge has an integer length. A histogon of orientation θ is a copy of an axis-aligned histogon rotated by θ in counterclockwise direction. The goal is to find a largest inscribed histogon and a smallest circumscribed histogon over all orientations in [0,π). Depending on whether the horizontal width of a histogon is predetermined or not, we consider several different versions of the problem and present exact algorithms. These optimization problems belong to shape analysis, classification, and simplification, and they have applications in various cost-optimization problems.

Subject Classification

ACM Subject Classification
  • Theory of computation → Computational geometry
Keywords
  • Shape simplification
  • Shape analysis
  • Histogon
  • Convex polygon

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References

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