Distance detection system for vehicles

  • US 5,307,136 A
  • Filed: 10/14/1992
  • Issued: 04/26/1994
  • Est. Priority Date: 10/22/1991
  • Status: Expired due to Term
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First Claim
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1. A distance detection system for an automobile, having an imaging system for imaging external objects in a required range from a plurality of different directions and for obtaining a plurality of pictures corresponding to said different directions, and a picture processing unit for processing said pictures and for outputting a distance distribution in an entire image of said required range, the picture processing unit comprising:

  • coincidence calculation means for dividing said pictures of said required range into a plurality of small regions and for performing a calculation of the coincidence between each of said plurality of small regions in one of said pictures and at least one region in at least one of the other pictures;

    discrepancy amount determination means for determining discrepancy amounts at corresponding small regions over an entire picture on the basis of a maximum value of the degree of coincidence corresponding to said regions.

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