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SYSTEM AND PROCESS FOR DETECTING, TRACKING AND COUNTING HUMAN OBJECTS OF INTEREST

  • US 20090010490A1
  • Filed: 07/03/2007
  • Published: 01/08/2009
  • Est. Priority Date: 07/03/2007
  • Status: Active Grant
First Claim
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1. A method of identifying, tracking, and counting objects of interest based upon at least one pair of stereo image frames taken by at least one image capturing device, comprising the steps of:

  • (a) obtaining said at least one pair of stereo image frames and converting each said stereo image frame to a rectified image frame using calibration data obtained from said at least one image capturing device;

    (b) generating a disparity map based upon said rectified image frame;

    (c) generating a depth map based upon said disparity map and said calibration data;

    (d) identifying the presence or absence of said objects of interest from said depth map and comparing each of said objects of interest to existing tracks comprising previously identified objects of interest;

    (e) for each said presence of an object of interest, adding said object of interest to one of said existing tracks if said object of interest matches said one existing track, or creating a new track comprising said object of interest if said object of interest does not match any of said existing tracks;

    (f) updating each said existing track; and

    (g) maintaining a count of said objects of interest in a given time period based upon said existing tracks created or modified during said given time period.

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