System and method for detecting obstacles to vehicle motion and determining time to contact therewith using sequences of images

  • US 7,113,867 B1
  • Filed: 11/26/2000
  • Issued: 09/26/2006
  • Est. Priority Date: 11/26/2000
  • Status: Expired due to Fees
First Claim
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1. A time-to-contact estimate determination system for generating an estimate as to the time-to-contact of a vehicle moving along a roadway with an obstacle comprising:

  • A. an image receiver configured to receive image information relating to a series of at least two images as the vehicle moves along a roadway; and

    characterized byB. a processor configured to determine a scaling factor that defines a ratio between a dimension length associated with two features of the obstacle in a first one of the at least two images and the same length between the same two features of the obstacle in a second one of the at least two images and uses the ratio to generate a time-to-contact estimate of the vehicle with the obstacle.

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