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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 24, Iss. 8 — Aug. 1, 2007
  • pp: 2109–2121

Estimation of contour motion and deformation for nonrigid object tracking

Jie Shao, Fatih Porikli, and Rama Chellappa  »View Author Affiliations


JOSA A, Vol. 24, Issue 8, pp. 2109-2121 (2007)
http://dx.doi.org/10.1364/JOSAA.24.002109


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Abstract

We present an algorithm for nonrigid contour tracking in heavily cluttered background scenes. Based on the properties of nonrigid contour movements, a sequential framework for estimating contour motion and deformation is proposed. We solve the nonrigid contour tracking problem by decomposing it into three subproblems: motion estimation, deformation estimation, and shape regulation. First, we employ a particle filter to estimate the global motion parameters of the affine transform between successive frames. Then we generate a probabilistic deformation map to deform the contour. To improve robustness, multiple cues are used for deformation probability estimation. Finally, we use a shape prior model to constrain the deformed contour. This enables us to retrieve the occluded parts of the contours and accurately track them while allowing shape changes specific to the given object types. Our experiments show that the proposed algorithm significantly improves the tracker performance.

© 2007 Optical Society of America

OCIS Codes
(330.4150) Vision, color, and visual optics : Motion detection
(330.7310) Vision, color, and visual optics : Vision

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: September 8, 2006
Revised Manuscript: January 3, 2007
Manuscript Accepted: January 11, 2007
Published: July 11, 2007

Virtual Issues
Vol. 2, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Jie Shao, Fatih Porikli, and Rama Chellappa, "Estimation of contour motion and deformation for nonrigid object tracking," J. Opt. Soc. Am. A 24, 2109-2121 (2007)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-24-8-2109

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