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System and method for determining eye closure state

  • US 7,253,739 B2
  • Filed: 03/10/2005
  • Issued: 08/07/2007
  • Est. Priority Date: 03/10/2005
  • Status: Active Grant
First Claim
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1. A system for monitoring an eye and determining eye closure, said system comprising:

  • a video imaging camera oriented to generate images of an eye; and

    a video processor for processing the images generated with the video imaging camera, said video processor comprising an edge detector for detecting edges of the eye in the image and a line selector for generating at least first and second lines representative of the detected edges, and said processor determining a state of eye closure based on distance between the first and second lines, wherein said video processor compares the distance between the first and second lines to a threshold distance to determine if the eye is closed.

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