Computational and structural advantages of circular boundary representation

  • Authors:
  • O. Aichholzer;F. Aurenhammer;T. Hackl;B. Jüttler;M. Oberneder;Z. ?Sír

  • Affiliations:
  • University of Technology Graz, Austria;University of Technology Graz, Austria;University of Technology Graz, Austria;Johannes Kepler University of Linz, Austria;Johannes Kepler University of Linz, Austria;Johannes Kepler University of Linz, Austria

  • Venue:
  • WADS'07 Proceedings of the 10th international conference on Algorithms and Data Structures
  • Year:
  • 2007

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Abstract

Boundary approximation of planar shapes by circular arcs has quantitive and qualitative advantages compared to using straightline segments. We demonstrate this by way of three basic and frequent computations on shapes - convex hull, decomposition, and medial axis. In particular, we propose a novel medial axis algorithm that beats existing methods in simplicity and practicality, and at the same time guarantees convergence to the medial axis of the original shape.