Apparatus and method to determine drowsiness of a driver
First Claim
1. An apparatus for determining drowsiness of a driver of a vehicle, comprising:
- an imaging device configured to obtain an image of the driver; and
a controller configured to determine a fatigue state of the driver, an eyelid closure state of the driver, and a wake-up state of the driver from the image of the driver,wherein the controller is configured to determine that the driver is in a drowsiness state when, after the fatigue state of the driver continues over a predetermined first time interval, and the eyelid closure state and the wake-up state of the driver occur alternately and repetitively within a predetermined second time interval, andwherein the controller is configured to determine the fatigue state of the driver based on at least one of when the vehicle deviates from a driving lane or when the vehicle is driven in a zigzag direction from a driving state of the vehicle.
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Accused Products
Abstract
An apparatus and method for determining drowsiness of a driver are provided. The apparatus includes an imaging device that obtains an image of the driver and a controller that determines (e.g., based on the image of the driver) when the driver is in a fatigue state, when the driver is in an eyelid closure state, and when the driver is in a wake-up state. The controller further determines that the driver is in a drowsiness state when after the fatigue state of the driver continues over a predetermined first time interval, the eyelid closure state and the wake-up state of the driver alternately and repetitively occur within a predetermined second time interval.
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Citations
6 Claims
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1. An apparatus for determining drowsiness of a driver of a vehicle, comprising:
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an imaging device configured to obtain an image of the driver; and a controller configured to determine a fatigue state of the driver, an eyelid closure state of the driver, and a wake-up state of the driver from the image of the driver, wherein the controller is configured to determine that the driver is in a drowsiness state when, after the fatigue state of the driver continues over a predetermined first time interval, and the eyelid closure state and the wake-up state of the driver occur alternately and repetitively within a predetermined second time interval, and wherein the controller is configured to determine the fatigue state of the driver based on at least one of when the vehicle deviates from a driving lane or when the vehicle is driven in a zigzag direction from a driving state of the vehicle. - View Dependent Claims (2, 3)
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4. A method for determining drowsiness of a driver of a vehicle, comprising:
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obtaining, by an imaging device, an image of the driver; determining, by a controller, a fatigue state of the driver, an eyelid closure state of the driver and a wake-up state of the driver from the image; and determining, by the controller, that the driver is in a drowsiness state when after the fatigue state of the driver continues over a predetermined first time interval, the eyelid closure state and the wake-up state of the driver occur alternately and repetitively within a predetermined second time interval, wherein the determining of the fatigue state of the driver comprises determining, by the controller, the fatigue state of the driver based on at least one of when the vehicle deviates from a driving lane or when the vehicle is driven in a zigzag direction from a driving state of the vehicle. - View Dependent Claims (5, 6)
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Specification