On Smoothness Measures of Active Contours and Surfaces

  • Authors:
  • Hervé Delingette

  • Affiliations:
  • -

  • Venue:
  • VLSM '01 Proceedings of the IEEE Workshop on Variational and Level Set Methods (VLSM'01)
  • Year:
  • 2001

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Abstract

In this paper, we propose to study different smoothness measures of planar contours or surfaces. We first define a smoothness measure as a functional that follows three types of invariance : invariance to changes of contour parameterization, invariance to contour rotations and translations and invariance to the contour sizes. We then introduce different smoothness measures that can be classified into local or global functionals but also that can be of geometric or algebraic nature. We finally discuss their implementation by observing the advantages and disadvantages of explicit and implicit contour representations.