Preconditioner-Based Contact Response and Application to Cataract Surgery

  • Hadrien Courtecuisse
  • Jérémie Allard
  • Christian Duriez
  • Stéphane Cotin
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6891)

Abstract

In this paper we introduce a new method to compute, in real-time, the physical behavior of several colliding soft-tissues in a surgical simulation. The numerical approach is based on finite element modeling and allows for a fast update of a large number of tetrahedral elements. The speed-up is obtained by the use of a specific preconditioner that is updated at low frequency. The preconditioning enables an optimized computation of both large deformations and precise contact response. Moreover, homogeneous and inhomogeneous tissues are simulated with the same accuracy. Finally, we illustrate our method in a simulation of one step in a cataract surgery procedure, which require to handle contacts with non homogeneous objects precisely.

Keywords

Contact Force Cataract Surgery Compliance Matrix Homogeneous Object Eurographics Association 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Hadrien Courtecuisse
    • 1
  • Jérémie Allard
    • 1
  • Christian Duriez
    • 1
  • Stéphane Cotin
    • 1
  1. 1.SHAMAN GroupINRIALilleFrance

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