The "λ-medial axis"

  • Authors:
  • Frédéric Chazal;André Lieutier

  • Affiliations:
  • Institut de Mathématiques de Bourgogne, Université de Bourgogne, UMR 5584, UFR des Sciences et Techniques, 9 Avenue Alain Savary, B.P. 47870, 21078 Dijon Cedex, France;Dassault Systèmes, 53 Avenue de l'Europe, 13082 Aix-en-Provence Cedex 2, France and LMC/IMAG Grenoble, France

  • Venue:
  • Graphical Models
  • Year:
  • 2005

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Abstract

Medial axis is known to be unstable for nonsmooth objects. For an open set O, we define the weak feature size, wfs, minimum distance between Oc and the critical points of the function distance to Oc. We introduce the "lambda-medial axis" Mλ of O, a subset of the medial axis of O which captures the homotopy type of O when λ Mλ remains stable under Hausdorff distance perturbations of Oc.