Video speed detection system

  • US 8,213,685 B2
  • Filed: 01/07/2008
  • Issued: 07/03/2012
  • Est. Priority Date: 01/05/2007
  • Status: Active Grant
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First Claim
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1. A system for monitoring compliance of moving vehicles on a roadway subject to a speed limit, the system comprising:

  • a tracking camera constructed and arranged to provide a plurality of images of a measurement area on the roadway, wherein each of the images is associated with timing information indicating when the image was captured; and

    a processing unit, coupled to the tracking camera, configured to;

    receive the images from the tracking camera;

    detect in the images a vehicle moving through the measurement area;

    determine a real-world position of the vehicle relative to the roadway for each of at least two of the images;

    access the timing information associated with said at least two of the images;

    calculate a speed of the vehicle based on the real-world positions and accessed timing information, wherein the real-world positions and accessed timing information are sufficiently accurate for the calculated speed to be used to determine whether the vehicle should be issued a citation for exceeding the speed limit;

    provide a GUI to a user of the system, wherein the GUI is configured to present to the user live video of the measurement area from the tracking camera; and

    to continuously update the speed of the vehicle and to display the speed of the vehicle at the position of the vehicle in the video.

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