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Subspace projection based non-rigid object tracking with particle filters

  • US 7,376,246 B2
  • Filed: 06/27/2005
  • Issued: 05/20/2008
  • Est. Priority Date: 06/27/2005
  • Status: Expired due to Fees
First Claim
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1. A method for tracking a non-rigid object in a video, comprising for each frame in the video, the steps of:

  • estimating a motion transition contour model of the object;

    assigning normal lines to the motion transition contour model;

    constructing a posterior deformation probability map according to the normal lines;

    detecting a deformed contour of the object according to the posterior deformation probability map;

    obtaining a point distribution model for a generic contour-subspace;

    projecting the deformed contour of the object onto a contour-subspace according to the point distribution model; and

    regulating the projected contour.

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