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.
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This work was supported in part by the Swiss National Science Foundation
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Ilić, S., Salzmann, M. & Fua, P. Implicit Meshes for Effective Silhouette Handling. Int J Comput Vision 72, 159–178 (2007) doi:10.1007/s11263-006-8595-0
- 3-D modeling
- deformable surfaces
- implicit surfaces