Image tracking device and image tracking method

  • US 5,530,771 A
  • Filed: 11/30/1994
  • Issued: 06/25/1996
  • Est. Priority Date: 09/16/1992
  • Status: Expired due to Fees
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First Claim
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1. An image tracking device comprising:

  • a video camera for taking an image in front of a vehicle;

    a memory for memorizing an image signal outputted by the video camera;

    image processing means for recognizing and tracking a plurality of vehicles by processing the image signal memorized in the memory;

    image display means for displaying the image outputted by the video camera and data outputted by the image processing means;

    white line sampling means for sampling a white line of a road;

    means for determining, based on the white line data sampled by the white line sampling means, which one of said plurality of vehicles running within a range of a lane of a driving vehicle is to be tracked as a target vehicle, and which one of said plurality of vehicles is to be tracked as a cut-in vehicle running between the target vehicle and the driving vehicle; and

    means for releasing a tracking window when at least a portion of another vehicle overlaps the target vehicle, whereby the overlapping vehicle may then be tracked as the target vehicle.

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