APPARATUS AND METHOD TO DETERMINE DROWSINESS OF A DRIVER
First Claim
1. An apparatus for determining drowsiness of a driver, comprising:
- an imaging device configured to obtain an image of the driver; and
a controller configured to determine from 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,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.
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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
8 Claims
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1. An apparatus for determining drowsiness of a driver, comprising:
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an imaging device configured to obtain an image of the driver; and a controller configured to determine from 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, 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. - View Dependent Claims (2, 3, 4)
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5. A method for determining drowsiness of a driver, comprising:
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obtaining, by an image of the driver; determining, by a controller, from the image 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; 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. - View Dependent Claims (6, 7, 8)
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Specification