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Skeleton body pose tracking from efficient three-dimensional motion estimation and volumetric reconstruction |
Applied Optics, Vol. 51, Issue 23, pp. 5686-5697 (2012)
http://dx.doi.org/10.1364/AO.51.005686
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Abstract
We address the problem of body pose tracking in a scenario of multiple camera setup with the aim of recovering body motion robustly and accurately. The tracking is performed on three-dimensional (3D) space using 3D data, including colored volume and 3D optical flow, which are reconstructed at each time step. We introduce strategies to compute multiple camera-based 3D optical flow and have attained efficient and robust 3D motion estimation. Body pose estimation starts with a prediction using 3D optical flow and then is changed to a lower-dimensional global optimization problem. Our method utilizes a voxel subject-specific body model, exploits multiple 3D image cues, and incorporates physical constraints into a stochastic particle-based search initialized from the deterministic prediction and stochastic sampling. It leads to a robust 3D pose tracker. Experiments on publicly available sequences show the robustness and accuracy of our approach.
© 2012 Optical Society of America
OCIS Codes
(110.4153) Imaging systems : Motion estimation and optical flow
(110.4155) Imaging systems : Multiframe image processing
(100.4999) Image processing : Pattern recognition, target tracking
ToC Category:
Imaging Systems
History
Original Manuscript: June 1, 2012
Revised Manuscript: July 13, 2012
Manuscript Accepted: July 15, 2012
Published: August 7, 2012
Citation
Zheng Zhang and Hock Soon, "Skeleton body pose tracking from efficient three-dimensional motion estimation and volumetric reconstruction," Appl. Opt. 51, 5686-5697 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-23-5686
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