Vision-based wet road surface detection
First Claim
1. A method for determining a wet road surface condition for a vehicle driving on a road, the method comprising the steps of:
- capturing an image exterior of the vehicle by an image capture device at a first instance of time;
detecting, by a processor, a potential object on a ground surface of the road of travel in the image captured at the first instance of time;
identifying, by the processor, a feature point on the potential object on the ground surface of the road of travel of the image captured at the first instance of time;
capturing an image exterior of the vehicle by the image capture device at a second instance of time;
detecting, by the processor, the potential object on the ground surface of the road of travel captured at the second instance of time;
identifying, by the processor, the feature point on the potential object of the image captured at the second instance of time;
determining whether the ground surface includes a mirror effect reflective surface based on a triangulation technique utilizing the feature points in the captured images at the first instance of time and the second instance of time; and
generating a wet driving surface indicating signal in response to the determination that the ground surface includes a mirror effect reflective surface.
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Abstract
A method for determining a wet road surface condition for a vehicle driving on a road. An image exterior of the vehicle is captured by an image capture device at a first and second instance of time. Potential objects and feature objects are detected on a ground surface of the road of travel at the first instance of time and the second instance of time. A determination is made whether the ground surface includes a mirror effect reflective surface based on a triangulation technique utilizing the feature points in the captured images at the first instance of time and the second instance of time. A wet driving surface indicating signal is generated in response to the determination that the ground surface includes a mirror effect reflective surface.
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Citations
19 Claims
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1. A method for determining a wet road surface condition for a vehicle driving on a road, the method comprising the steps of:
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capturing an image exterior of the vehicle by an image capture device at a first instance of time; detecting, by a processor, a potential object on a ground surface of the road of travel in the image captured at the first instance of time; identifying, by the processor, a feature point on the potential object on the ground surface of the road of travel of the image captured at the first instance of time; capturing an image exterior of the vehicle by the image capture device at a second instance of time; detecting, by the processor, the potential object on the ground surface of the road of travel captured at the second instance of time; identifying, by the processor, the feature point on the potential object of the image captured at the second instance of time; determining whether the ground surface includes a mirror effect reflective surface based on a triangulation technique utilizing the feature points in the captured images at the first instance of time and the second instance of time; and generating a wet driving surface indicating signal in response to the determination that the ground surface includes a mirror effect reflective surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification