Implicit Meshes for Effective Silhouette Handling

  • Authors:
  • Slobodan Ilić;Mathieu Salzmann;Pascal Fua

  • Affiliations:
  • Computer Vision Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland CH-1015;Computer Vision Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland CH-1015;Computer Vision Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland CH-1015

  • Venue:
  • International Journal of Computer Vision
  • Year:
  • 2007

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Abstract

Using silhouettes in uncontrolled environments typically requires handling occlusions as well as changing or cluttered backgrounds, which limits the applicability of most silhouette based methods. For the purpose of 3-D shape modeling, we show that representing generic 3-D surfaces as implicit surfaces lets us effectively address these issues.This desirable behavior is completely independent from the way the surface deformations are parame-trized. To show this, we demonstrate our technique in three very different cases: Modeling the deformations of a piece of paper represented by an ordinary triangulated mesh; reconstruction and tracking a person's shoulders whose deformations are expressed in terms of Dirichlet Free Form Deformations; reconstructing the shape of a human face parametrized in terms of a Principal Component Analysis model.