Adaptive motor vehicle cruise control

  • US 4,987,357 A
  • Filed: 12/18/1989
  • Issued: 01/22/1991
  • Est. Priority Date: 12/18/1989
  • Status: Expired due to Fees
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First Claim
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1. An adaptive cruise control system for enabling a following vehicle to maintain a substantially constant position with respect to a followed vehicle comprising:

  • means for storing a reference image of the followed vehicle in memory;

    means for storing periodic repetitive live images of the followed vehicle in memory;

    means for shifting the scale of each of said stored live images in discrete steps over predetermined ranges to obtain a plurality of scaled images;

    means for shifting the horizontal and vertical positions of said stored reference image in discrete steps over a predetermined range to obtain a plurality of shifted images;

    correlation means for selecting, for each of said live images, the one of said scaled images and the one of said shifted images which best match one another; and

    means to modify the speed and steering of the following vehicle under the control of said correlation means.

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