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DETECTING MULTIPLE MOVING OBJECTS IN CROWDED ENVIRONMENTS WITH COHERENT MOTION REGIONS

  • US 20100322474A1
  • Filed: 06/23/2009
  • Published: 12/23/2010
  • Est. Priority Date: 06/23/2009
  • Status: Active Grant
First Claim
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1. An apparatus for identifying at least one discrete moving object within a series of video images, said apparatus comprising:

  • an image recording device that stores a time series of video images; and

    an image analysis device that is configured to execute a program of machine-executable instructions to identify at least one moving object in said time series of video images, wherein said program includes the steps of;

    identifying a plurality of feature point tracks in said time series of video images, wherein for each video image of said time series of video images, all feature points belonging to a same feature point track are located within a polygon of a predefined size; and

    calculating a trajectory similarity factor for each pair of feature point tracks said plurality of feature point tracks, wherein each trajectory similarity factor is a measure of a maximum distance between a pair of feature point tracks.

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