Driving environment surveillance apparatus

  • US 5,475,494 A
  • Filed: 12/15/1993
  • Issued: 12/12/1995
  • Est. Priority Date: 12/22/1992
  • Status: Expired due to Term
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First Claim
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1. A driving environment surveillance apparatus comprising:

  • an obstacle detecting unit for scanning a plurality of divided peripheral regions in a travelling direction of a vehicle so as to, if an obstacle is present in said peripheral regions, detect a relative distance and an azimuth to said obstacle from said vehicle;

    an image detecting unit for detecting two-dimensional images in said peripheral regions;

    an image processing region limiting unit for specifying a region where an obstacle is present depending upon said azimuth detected by said obstacle detecting unit so as to derive a two-dimensional image corresponding to said specified region from said image detecting unit;

    an obstacle extracting unit for extracting said obstacle from said two-dimensional image derived by said image processing region limiting unit so as to calculate a size index of said obstacle; and

    a driving environment output unit for specifying a position where said obstacle is present in a real spacial coordinate with respect to a driving road of said vehicle depending upon said distance and said azimuth detected by said obstacle detecting unit so as to display a figure indicating said size index of said obstacle at said specified position.

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