System and method of detecting eye closure based on edge lines
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United States of America Patent
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Aug 7, 2007
Grant Date -
Sep 14, 2006
app pub date -
Mar 10, 2005
filing date -
Mar 10, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system and method are provided for monitoring an eye to determine eye closure. The system includes a video imaging camera oriented to generate images of an eye, and a video processor for processing the images. The processor includes an edge detector for detecting edges of the eye in the image, and a line selector for generating a plurality of lines at multiple angles representative of the detected edges. The processor determines the state of eye closure, such as eye open or eye closed, based on the number of lines at selected angles. The system may be employed on a vehicle to determine the eye closure of a driver of the vehicle.
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