The exact lattice width of planar sets and minimal arithmetical thickness

  • Authors:
  • F. Feschet

  • Affiliations:
  • LLAIC1 – IUT Clermont-Ferrand, Aubière, France

  • Venue:
  • IWCIA'06 Proceedings of the 11th international conference on Combinatorial Image Analysis
  • Year:
  • 2006

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Abstract

We provide in this paper an algorithm for the exact computation of the lattice width of an integral polygon K with n vertices in O(n log s) arithmetic operations where s is a bound on all integers defining vertices and edges. We also provide an incremental version of the algorithm whose update complexity is shown to be O(log n + log s). We apply this algorithm to construct the arithmetical line with minimal thickness, which contains a given set of integer points.