Constraining Human Body Tracking

  • Authors:
  • D. Demirdjian;T. Ko;T. Darrell

  • Affiliations:
  • -;-;-

  • Venue:
  • ICCV '03 Proceedings of the Ninth IEEE International Conference on Computer Vision - Volume 2
  • Year:
  • 2003

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Abstract

Our paper addresses the problem of enforcing constraintsin human body tracking. A projection technique is derivedto impose kinematic constraints on independent multi-bodymotion: we show that for small motions the multi-body articulatedmotion space can be approximated by a linearmanifold estimated directly from the previous body pose.We propose a learning approach to model non-linear constraints;we train a support vector classifier from motioncapture data to model the boundary of the space of validposes. Linear and non-linear body pose constraints are enforcedby first projecting unconstrained motions onto thearticulated motion space and then optimizing to find pointson this linear manifold that lie within the non-linear constraintsurface modeled by the SVM classifier.