Method and device for determining the speed of travel and coordinates of vehicles and subsequently identifying same and automatically recording road traffic offences

  • US 8,830,299 B2
  • Filed: 08/08/2012
  • Issued: 09/09/2014
  • Est. Priority Date: 02/08/2010
  • Status: Active Grant
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First Claim
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1. A method for determining speeds and coordinates of vehicles comprising steps of:

  • emitting electromagnetic pulses in a direction of vehicles moving along a road section of a few hundred meters long andreceiving electromagetic pulses reflected from the vehicles by means of a radar;

    video recording said road section by means of a panoramic video camera synchronously with said emitting of electromagnetic pulses, capturing thereby a video image of said road section, wherein the panoramic video camera is calibrated such that distance coordinates for a corresponding road section are assigned to each row element Yi and to each column element Xi of the video camera matrix;

    calculating for each vehicle distance coordinates and a speed of the vehicle by comparing parameters of emitted and received electromagnetic pulses;

    independently and simultaneously calculating distance coordinates and speeds for the same vehicles captured in the video image;

    comparing data streams from the radar and panoramic video camera comprising the speed and distance coordinates for each vehicle, which is at the moment within said road section, wherein the data received from the radar are taken to be reliable metrological data on the speeds and distance coordinates Yi of the vehicles, and wherein the data received from the panoramic video camera are considered to be reliable metrological data on the speeds and distance coordinates Xi of the same vehicles;

    comparing for each vehicle the calculated vehicle speed with a maximum allowed speed in the road section, and,in case of a speed violation, generating subsequently a signal to recognize a license plate of a speed-violating vehicle by means of a license plate recognition video camera and monitoring each vehicle violating the speed limit; and

    generation by means of a license plate recognition video camera an image frame of the violating vehicle, which comprises a recognized license plate, date, time, recorded speed and video camera identifier, providing thereby automatic recording of traffic violations.

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