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System for classifying an individual's gaze direction

  • US 6,154,559 A
  • Filed: 10/01/1998
  • Issued: 11/28/2000
  • Est. Priority Date: 10/01/1998
  • Status: Expired due to Term
First Claim
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1. A system to classify the gaze direction of an individual observing a number of surrounding objects, comprising:

  • means for observing the head pose of an individual;

    means for generating a number of templates corresponding to different gaze directions of said individual as said individual looks in different gaze directions;

    means for matching an image of said individual with the template which is most similar in appearance;

    means utilizing said matched templates for generating a pose-space histogram recording the frequency of different head poses over a predetermined period of time, said histogram recording as peaks over time frequently viewed directions towards said number of surrounding objects, with each peak labelled utilizing a qualitative description of the environment around said individual;

    means coupled to said head pose observing means and said pose-space histogram for determining that peak which most closely corresponds to the current gaze direction of said individual, whereby gaze direction is classified without direct measurement of head position or eye direction.

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