Polynomial time algorithms for three-label point labeling

  • Authors:
  • Rob Duncan;Jianbo Qian;Antoine Vigneron;Binhai Zhu

  • Affiliations:
  • Department of Computer Science, Montana State University, Bozeman, MT;Department of Mathematics, Shandong University, Jinan, China;Department of Computer Science, Hong Kong University of Science and Technology, Hong Kong;Department of Computer Science, Montana State University, Bozeman, MT

  • Venue:
  • Theoretical Computer Science - Computing and combinatorics
  • Year:
  • 2003

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Abstract

In this paper, we present an O(n2 log n) time solution for the following multi-label map labeling problem: given a set S of n distinct sites in the plane, place at each site a triple of uniform squares of maximum possible size such that all the squares are axis-parallel and a site is on the boundaries of its three labeling squares. We also study the problem under the discrete model, i.e., a site must be at the corners of its three label squares. We obtain an optimal Θ(n log n) time algorithm for the latter problem.