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Semantic video object segmentation and tracking

  • US 6,400,831 B2
  • Filed: 04/02/1998
  • Issued: 06/04/2002
  • Est. Priority Date: 04/02/1998
  • Status: Expired due to Term
First Claim
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1. A method of semantic object tracking of an object in a sequence of video frames, the method comprising:

  • for an approximate boundary near a border of an object in a first video frame, defining an inner boundary inside of the approximate boundary;

    defining an outer boundary outside of the approximate boundary; and

    expanding the inner boundary while contracting the outer boundary to converge upon the border of the object in the first video frame;

    determining a motion transformation function representing the transformation of the object between the first video frame and a second video frame, wherein the determining comprises matching the object in the first video frame to the object in the second video frame; and

    defining a new approximate boundary for the object in the second video frame based upon the motion transformation function.

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