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Object-based parsing and indexing of compressed video streams

  • US 6,389,168 B2
  • Filed: 10/13/1998
  • Issued: 05/14/2002
  • Est. Priority Date: 10/13/1998
  • Status: Expired due to Fees
First Claim
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1. A method for object-based parsing and indexing compressed video streams comprising the steps of:

  • identifying first composition of first frame video objects in a first video frame of a compressed video stream, each said first frame video object in said first composition being a video representation of a physical entity that was imaged during capture of said first video frame, including assigning each of said first frame video objects at least one associated first quantitative attribute value and including determining a first orientation of said first frame video objects;

    identifying a second composition of second frame video objects in a second video frame of said compressed video stream, each said second frame video object in said second composition being a video representation of a physical entity that was imaged during capture of said second video frame, including assigning each second frame video object at least one associated second quantitative attribute value and including determining a second orientation of said second frame video objects;

    comparing at least one first quantitative attribute value to at least one second quantitative attribute value to determine if a predetermined threshold has been exceeded, said predetermined threshold being related to a difference between attribute values, including comparing said first and said second orientations; and

    as a response to said determination of whether said predetermined threshold has been exceeded, selectively indexing a video frame selected from a portion of said compressed video stream bounded by said first video frame and said second video frame.

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