Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik GmbH Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik GmbH scholarly article en Keikha, Vahideh; van de Kerkhof, Mees; van Kreveld, Marc; Kostitsyna, Irina; Löffler, Maarten; Staals, Frank; Urhausen, Jérôme; Vermeulen, Jordi L.; Wiratma, Lionov http://www.dagstuhl.de/lipics License
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URN: urn:nbn:de:0030-drops-100003
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Convex Partial Transversals of Planar Regions

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Abstract

We consider the problem of testing, for a given set of planar regions R and an integer k, whether there exists a convex shape whose boundary intersects at least k regions of R. We provide polynomial-time algorithms for the case where the regions are disjoint axis-aligned rectangles or disjoint line segments with a constant number of orientations. On the other hand, we show that the problem is NP-hard when the regions are intersecting axis-aligned rectangles or 3-oriented line segments. For several natural intermediate classes of shapes (arbitrary disjoint segments, intersecting 2-oriented segments) the problem remains open.

BibTeX - Entry

@InProceedings{keikha_et_al:LIPIcs:2018:10000,
  author =	{Vahideh Keikha and Mees van de Kerkhof and Marc van Kreveld and Irina Kostitsyna and Maarten L{\"o}ffler and Frank Staals and J{\'e}r{\^o}me Urhausen and Jordi L. Vermeulen and Lionov Wiratma},
  title =	{{Convex Partial Transversals of Planar Regions}},
  booktitle =	{29th International Symposium on Algorithms and Computation  (ISAAC 2018)},
  pages =	{52:1--52:12},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-094-1},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{123},
  editor =	{Wen-Lian Hsu and Der-Tsai Lee and Chung-Shou Liao},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2018/10000},
  URN =		{urn:nbn:de:0030-drops-100003},
  doi =		{10.4230/LIPIcs.ISAAC.2018.52},
  annote =	{Keywords: computational geometry, algorithms, NP-hardness, convex transversals}
}

Keywords: computational geometry, algorithms, NP-hardness, convex transversals
Seminar: 29th International Symposium on Algorithms and Computation (ISAAC 2018)
Issue date: 2018
Date of publication: 2018


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