Polyhedrization of discrete convex volumes

  • Authors:
  • Valentin E. Brimkov;Reneta Barneva

  • Affiliations:
  • Mathematics Department, SUNY Buffalo State College, Buffalo, NY;Department of Computer Science, SUNY Fredonia, NY

  • Venue:
  • ISVC'06 Proceedings of the Second international conference on Advances in Visual Computing - Volume Part I
  • Year:
  • 2006

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Abstract

In recent years the problem of obtaining a reversible discrete surface polyhedrization (DSP) is attracting an increasing interest within the discrete geometry community. In this paper we propose the first algorithm for obtaining a reversible polyhedrization with a guaranteed performance, i.e., together with a bound on the ratio of the number of facets of the obtained polyhedron and one with a minimal number of facets. The algorithm applies to the case of a convex DSP when a discrete surface M is determined by a convex body in ℝ3. The performance estimation is based on a new lower bound (in terms of the diameter of M) on the number of 2-facets of an optimal polyhedrization. That bound easily extends to an arbitrary dimension n. We also discuss on approaches for solving the general 3D DSP.