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Tracking across multiple cameras with disjoint views

  • US 7,450,735 B1
  • Filed: 10/16/2004
  • Issued: 11/11/2008
  • Est. Priority Date: 10/16/2003
  • Status: Expired due to Fees
First Claim
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1. A method of tracking an object passing before non-overlapping cameras, comprising the steps of:

  • tracking the object between a first camera and a second camera; and

    automatically determining whether the object is identical in both the first camera and the second camera without calibrating the cameras or providing a site modeling, wherein the determining step includes the steps of;

    learning inter-camera spatial temporal probability between the first camera and the second camera using Parzen windows;

    learning inter-camera appearance probabilities between the first camera and the second camera using distribution of Bhattacharyya distances between appearance models;

    establishing correspondences between the first camera and the second camera based on Maximum A Posteriori (MAP) framework combining both the spatial temporal and the appearance probabilities; and

    updating learned probabilities throughout over time.

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