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Snake : Active Contour

by Dirk-Jan Kroon 08 Jul 2010 (Updated 08 Nov 2011)

Snake Segmentation (Kass et al), 2D/3D including GVF and balloon force (Easy to read code)

These functions implements the basic snake segmentation contour, as introduced by Kass et al.

Algorithm:

A snake is an active (moving) contour, in which the points are attracted by edges and other image boundaries. To keep the contour smooth, a membrane and thin plate energy is used as contour regularization.

Implementation:

All code is well commented, and is probably easy readable. It includes,

  • A balloon force, which is not in the original paper
  • Binary image segmentation result,
  • The "Gradient Vector Flow" (GVF) method.
  • 3D implementation, including parameter to keep the mesh from self-intersecting

Try the example in the help of function Snake.m !

Literature:

  • Michael Kass, Andrew Witkin and Demetri TerzoPoulos "Snakes Active Contour Models", 1987
  • Jim Invins and John Porril, "Everything you always wanted to know about snakes (but were afraid to ask)
  • Chenyang Xu and Jerry L. Prince, "Gradient Vector Flow: A New external force for Snakes
  • Christoph Lurig, Leif Kobbelt, Thomas Ertl, "Hierachical solutions for the Deformable Surface Problem in Visualization"

Please report bugs, successes and other comments

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