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Emergency rescue vehicle video based violation enforcement method and system

  • US 9,104,939 B2
  • Filed: 12/14/2012
  • Issued: 08/11/2015
  • Est. Priority Date: 08/16/2011
  • Status: Active Grant
First Claim
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1. A computer-implemented method of detecting a vehicle that fails to yield to an emergency vehicle traveling on a section of road and detecting a vehicle that follows an emergency vehicle too close on the section of road, the method comprising:

  • A) receiving a first video stream from a forward facing image capturing device mounted to an emergency vehicle, the first video stream including a first plurality of temporally spaced video frames;

    B) processing the first video stream to identify a first set of two or more video frames including a first detected vehicle within a first prescribed distance in a front of the emergency vehicle;

    C) processing the identified first set of two or more video frames to determine if the first detected vehicle is yielding to the emergency vehicle according to a first prescribed law, the first prescribed law requiring the first detected vehicle to yield a right of way to the emergency vehicle within the first prescribed distance by moving the first detected vehicle to a prescribed side of a section of road and stopping on the prescribed side of the section of road;

    D) receiving a second video stream from a rear facing image capturing device mounted to an emergency vehicle, the second video stream including a second plurality of temporally spaced video frames;

    E) processing the second video stream to identify a second set of two or more video frames including a second detected vehicle within a second prescribed distance in a rear of the emergency vehicle; and

    F) processing the identified second set of two or more video frames to determine if the second detected vehicle is following the emergency vehicle in violation of a second prescribed law, the second prescribed law requiring the second detected vehicle to not follow the emergency vehicle at a distance closer than the second prescribed distance in the rear of the emergency vehicle,wherein the first set of two or more video frames includes a license plate associated with the first detected vehicle, the license plate including a height and width, and step B) comprises;

    determining if the first detected vehicle is within the first prescribed distance by determining one or both of a pixel height and a pixel width associated with the license plate.

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