Collision Warning System

  • US 20090143986A1
  • Filed: 01/19/2005
  • Published: 06/04/2009
  • Est. Priority Date: 04/08/2004
  • Status: Active Grant
First Claim
Patent Images

1. A method of estimating a time-to-collision (TTC) of a vehicle with an object comprising the step of:

  • (a) acquiring a plurality of images of the object at known time intervals between the times at which the images of the plurality of images are acquired; and

    (b) determining the time-to-collision (TTC) solely from information derived from the images and the time intervals, wherein said determining the TTC is based on a relative velocity and relative acceleration between the vehicle and the object.

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