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Method of detecting and tracking groups of people

  • US 7,688,349 B2
  • Filed: 12/07/2001
  • Issued: 03/30/2010
  • Est. Priority Date: 12/07/2001
  • Status: Active Grant
First Claim
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1. A method of detecting groups of individuals within a number of people, comprising:

  • visually recording movement of the people over time by generating a series of images of a scene;

    detecting the presence of the individuals in the images;

    tracking movement of the individuals to determine their respective trajectories; and

    analyzing the trajectories to determine the existence of the groups of individuals, wherein individuals in each of the groups;

    i) move together after another group has completed a transaction and ii) exit the scene together after having completed their own transaction.

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