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Method and apparatus for detection of drowsiness

DC CAFC
  • US 6,717,518 B1
  • Filed: 02/09/2001
  • Issued: 04/06/2004
  • Est. Priority Date: 01/15/1998
  • Status: Expired due to Term
First Claim
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1. A process of detecting a person falling asleep, the process comprising:

  • acquiring an image of the face of the person;

    identifying a sub-area of the image comprising at least one eye of the person, including;

    identifying the head of the person in the image; and

    identifying the sub-area of the image using an anthropomorphic model;

    selecting pixels within the sub-area of the image having characteristics corresponding to characteristics of the at least one eye of the person;

    forming at least one histogram of the selected pixels;

    analyzing the at least one histogram over time to identify each opening and closing of the eye; and

    determining from the opening and closing information of the eye, characteristics indicative of a person falling asleep.

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