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Vision-based wet road surface detection

  • US 9,090,264 B1
  • Filed: 06/12/2014
  • Issued: 07/28/2015
  • Est. Priority Date: 06/12/2014
  • Status: Active Grant
First Claim
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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:

  • 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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