System and method for determining eye closure state
First Claim
1. A system for monitoring an eye and determining eye closure, said system comprising:
- a video imaging camera oriented to generate images of an eye; and
a video processor for processing the images generated with the video imaging camera, said video processor comprising an edge detector for detecting edges of the eye in the image and a line selector for generating at least first and second lines representative of the detected edges, and said processor determining a state of eye closure based on distance between the first and second lines, wherein said video processor compares the distance between the first and second lines to a threshold distance to determine if the eye is closed.
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Accused Products
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. The system also includes a video processor for processing the images generated with the video imaging camera. The processor includes an edge detector for detecting edges of the eye in the image and a line selector for generating substantially horizontal first and second lines representative of the detected edges. The processor determines the state of eye closure, such as eye open or eye closed, based on distance between the first and second lines. The system may be employed on a vehicle to determine the eye closure of a driver of the vehicle.
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Citations
19 Claims
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1. A system for monitoring an eye and determining eye closure, said system comprising:
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a video imaging camera oriented to generate images of an eye; and a video processor for processing the images generated with the video imaging camera, said video processor comprising an edge detector for detecting edges of the eye in the image and a line selector for generating at least first and second lines representative of the detected edges, and said processor determining a state of eye closure based on distance between the first and second lines, wherein said video processor compares the distance between the first and second lines to a threshold distance to determine if the eye is closed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11)
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9. A vehicle eye monitoring system for monitoring an eye of a-person in a vehicle and determining eye closure, said system comprising:
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a video imaging camera located on a vehicle and oriented to generate images of an eye of a person in the vehicle; and a processor for processing the images generated with the video imaging camera, said video processor comprising an edge detector for detecting edges of the eye in the image and a line selector for generating first and second lines representative of the detected edges, said processor determining a state of eye closure based on distance between the first and second lines, wherein said processor compares the distance between the first and second lines to a threshold distance to determine if the eye is closed. - View Dependent Claims (12, 13)
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14. A method of monitoring an eye and determining eye closure, said method comprising the steps of:
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arranging a video imaging camera to generate images of an eye; generating an image of the eye; processing the image to identify edges of the eye in the image; generating at least first and second lines representative of the edges; and determining an eye closure state based on distance between the first and second lines, wherein said step of determining an eve closure state comprises comparing the distance between the first and second lines to a threshold distance to determine if the eye is closed. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification