• US 20020105440A1
  • Filed: 06/08/1999
  • Published: 08/08/2002
  • Est. Priority Date: 10/03/1996
  • Status: Active Grant
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First Claim
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1. A method for registering the outer characteristics of a vehicle (4) in a road toll unit, wherein registration of the number plate or other identification characteristic of the vehicle is carried out in a position fixed therefor, wherein, in the road toll unit, a check-up is performed of the possibilities of carrying out a payment operation by means of remote communication between a receiver and transmitter device (7) in the road toll unit and in passing vehicles when there is a free flow of traffic while successively following the vehicles by means of image processing from video recordings during a distance of the passage through the toll unit between an entry position and at least through said registering position, characterized in that, in the follow-process, a marker and preferably an indication of time are connected to the image of the respective vehicle relating to the successive position determination and with the same marker connected to the recording for registering the identification characteristic, such that vehicles, for which no correct payment status has been established during the remote communication, may be subsequently charged on the basis of the recorded identification characteristics, whereby at least one image of the physical shape of the vehicle (4) is matched to said recording of identification characteristics, said matching being indicated by means of said marker and preferably also corresponding time data, such that said tracing may be based on said recording of the identification characteristic as well as the associated image of the physical shape of the vehicle, which are connected together by means of the marker generated in the successive position determination process by image processing therein, whereby the class of the vehicle, in accordance with a classification scheme based on the physical properties of the vehicle, may be determined from the image of the physical shape of the vehicle for determining the toll fee.

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