Drowsiness detection system and method
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United States of America Patent
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-
Apr 10, 2007
Grant Date -
May 13, 2004
app pub date -
Nov 11, 2002
filing date -
Nov 11, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A low-cost system for detecting a drowsy condition of a driver of a vehicle includes a video imaging camera located in the vehicle and oriented to generate images of a driver of the vehicle. The system also includes a processor for processing the images acquired by the video imaging camera. The processor monitors an eye and determines whether the eye is in an open position or a closed state. The processor further determines a time proportion of eye closure as the proportion of a time interval that the eye is in the closed position, and determines a driver drowsiness condition when the time proportion of eye closure exceeds a threshold value.
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