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Deformable Surface Tracking Ambiguities

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3 Author(s)
Mathieu Salzmann ; Computer Vision Laboratory, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland. mathieu.salzmann@epfl.ch ; Vincent Lepetit ; Pascal Fua

We study from a theoretical standpoint the ambiguities that occur when tracking a generic deformable surface under monocular perspective projection given 3D to 2D correspondences. We show that, additionally to the known scale ambiguity, a set of potential ambiguities can be clearly identified. From this, we deduce a minimal set of constraints required to disambiguate the problem and incorporate them into a working algorithm that runs on real noisy data.

Published in:

2007 IEEE Conference on Computer Vision and Pattern Recognition

Date of Conference:

17-22 June 2007