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Vision-based highway overhead structure detection system

  • US 7,027,615 B2
  • Filed: 06/20/2001
  • Issued: 04/11/2006
  • Est. Priority Date: 06/20/2001
  • Status: Expired due to Fees
First Claim
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1. A vision-based identification apparatus comprising:

  • a host vehicle;

    wherein said host vehicle is equipped with a plurality of elements including;

    i) an image capture device element;

    operatively interconnected with;

    ii) an image signal processor element;

    which is operatively interconnected with;

    iii) a matching processor element;

    which is also operatively interconnected with;

    iv) a radar transceiver element;

    wherein the image capture device element is configured to provide a time-based sequence of data frames to the image signal processor element and the image signal processor element provides a processed image signal to the matching processor element, andwherein the data frames include a two-dimensional array of pixel elements; and

    wherein the radar transceiver element is configured to provide a radar signal to the matching processor element, andwherein the matching processor element combines the processed image signal and the radar signal, whereby the combined signals complement each other and allow the apparatus to effectively identify objects likely to be misidentified as collision threats,wherein the time-based sequence of data frames include a plurality of data elements including at least one horizontal edge; and

    wherein each horizontal edge is identified based on a plurality of pixels having a substantially similar electromagnetic radiation response across a plurality of substantially horizontally aligned pixels; and

    wherein the image signal processor element extracts horizontal edges, from the time-based sequence of data frames, in the form of edge pixels, andwherein the edge pixels are projected in each row of the data frames, to get a horizontal edge projection in the sequence of data frames; and

    wherein each horizontal edge projection may be tracked in time based on the horizontal edge projection'"'"'s sequential appearance in the data frames.

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