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Human Shape and Pose Tracking Using Keyframes

Chun Hao Huang 1 Edmond Boyer 2, * Nassir Navab 1 Slobodan Ilic 1 
* Corresponding author
2 MORPHEO - Capture and Analysis of Shapes in Motion
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology
Abstract : This paper considers human tracking in multi-view set-ups and investigates a robust strategy that learns online key poses to drive a shape tracking method. The interest arises in realistic dynamic scenes where occlusions or segmentation errors occur. The corrupted observations present missing data and outliers that deteriorate tracking results. We propose to use key poses of the tracked person as multiple reference models. In contrast to many existing approaches that rely on a single reference model, multiple templates represent a larger variability of human poses. They provide therefore better initial hypotheses when tracking with noisy data. Our approach identifies these reference models online as distinctive keyframes during tracking. The most suitable one is then chosen as the reference at each frame. In addition, taking advantage of the proximity between successive frames, an efficient outlier handling technique is proposed to prevent from associating the model to irrelevant outliers. The two strategies are successfully experimented with a surface deformation framework that recovers both the pose and the shape. Evaluations on existing datasets also demonstrate their benefits with respect to the state of the art.
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Submitted on : Wednesday, December 17, 2014 - 11:29:24 AM
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Chun Hao Huang, Edmond Boyer, Nassir Navab, Slobodan Ilic. Human Shape and Pose Tracking Using Keyframes. CVPR 2014 - IEEE International Conference on Computer Vision and Pattern Recognition, Jun 2014, Columbus, United States. pp.3446-3453, ⟨10.1109/CVPR.2014.440⟩. ⟨hal-00995681⟩



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