2013-07-08

Finite Element Based Deformable Object Tracking from a Single Viewpoint

Jochen Lang, Ph.D., University of Ottawa

10 Jul 2013, 14:00–15:30; Location: S3|05-074

In this talk, I will present our recent work on robustly tracking objects that deform due to an external applied force. The geometry of the object is reconstructed over time based on noisy observations from a single viewpoint. A template mesh of the object in its rest-state is fit to observations in a nonlinear optimization. We use a redundant parameterization of smoothly varying local mesh transformations. While for the observed part of the object, the data term guides the optimization, the unobserved parts of the mesh are only governed by the smoothness term. In a second optimization, we improve the location of the unobserved vertices based on elastic solid deformation solved with finite elements. Synthetic results illustrate the ability of our method to estimate accurate deformations of observed and unobserved parts of an object despite incomplete noisy measurements. We will demonstrate results for deformations recorded by low-quality pointclouds captured either with a commercial stereo camera or a structured light system. This is joint work with Stefanie Wuhrer, Motahareh Tekieh and Chang Shu.

This talk is provided together with the department of Computer Science.

Category: CE Seminar

Contact

Technische Universität Darmstadt

Graduate School CE
Dolivostraße 15
D-64293 Darmstadt

Phone+49 6151/16-24401
Fax -24404
OfficeS4|10-322

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