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Mode- based multi-hypothesis tracking using parametric contours

  • US 20060078163A1
  • Filed: 11/17/2005
  • Published: 04/13/2006
  • Est. Priority Date: 06/07/2002
  • Status: Active Grant
First Claim
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1. A method for tracking objects in sequential image frames comprising performing steps for:

  • acquiring at least two sequential images of a scene that includes at least one object of interest;

    performing an active contour analysis of each sequential image frame for identifying at least one contour in each sequential image frame which corresponds to a local maximum in a distribution of possible states for the object of interest;

    generating an importance function from a sampling of the identified contours for each sequential image frame;

    for each contour, using the importance function to estimate a posterior probability of a tracking state for the object of interest with respect to each image frame; and

    identifying a contour having a highest estimated posterior probability as representing a current tracking state of the object of interest for each sequential image frame.

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