Method of detecting drowsiness of a vehicle operator
First Claim
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1. A method of rectifying drowsiness of a vehicle driver, comprising the steps of:
- capturing a sequence of images of the driver by use of a sensor;
determining, based on the images, whether a head of the driver is tilting away from a vertical orientation in a substantially lateral direction toward a shoulder of the driver; and
awakening the driver with sensory stimuli only if it is determined that the head of the driver is tilting away from a vertical orientation in a substantially lateral direction toward a shoulder of the driver.
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Abstract
A method of rectifying drowsiness of a vehicle driver includes capturing a sequence of images of the driver. It is determined, based in the images, whether a head of the driver is tilting away from a vertical orientation in a substantially lateral direction toward a shoulder of the driver. The driver is awakened with sensory stimuli only if it is determined that the head of the driver is tilting away from a vertical orientation in a substantially lateral direction toward a shoulder of the driver.
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Citations
20 Claims
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1. A method of rectifying drowsiness of a vehicle driver, comprising the steps of:
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capturing a sequence of images of the driver by use of a sensor; determining, based on the images, whether a head of the driver is tilting away from a vertical orientation in a substantially lateral direction toward a shoulder of the driver; and awakening the driver with sensory stimuli only if it is determined that the head of the driver is tilting away from a vertical orientation in a substantially lateral direction toward a shoulder of the driver. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of rectifying drowsiness of a vehicle driver, comprising the steps of:
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capturing a sequence of images of the driver by use of a sensor; using edge detection on the images to determine at least one of; whether a head of the driver is tilting away from a vertical orientation; and whether a frequency or a duration of eyelid closure of the driver is indicative of drowsiness of the driver; and awakening the driver with sensory stimuli if either; it is determined that the head of the driver is tilting away from a vertical orientation;
orit is determined that the frequency or duration of eyelid closure of the driver is indicative of drowsiness of the driver. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of rectifying drowsiness of a vehicle driver, comprising the steps of:
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capturing a sequence of images of the driver by use of a sensor; determining, based in the images, whether a head of the driver is tilting away from a vertical orientation; ascertaining, based on the images, whether or a duration of eyelid closure of the driver is consistent with drowsiness of the driver; and awakening the driver with sensory stimuli only if; it is determined that the head of the driver is tilting away from a vertical orientation; and it is ascertained that the duration of eyelid closure of the driver is consistent with drowsiness of the driver. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification