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Method and device for optically detecting the open state of a vehicle door

  • US 7,457,437 B2
  • Filed: 07/03/2002
  • Issued: 11/25/2008
  • Est. Priority Date: 07/10/2001
  • Status: Expired due to Fees
First Claim
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1. A method for detecting a position of an object in a vehicle and/or an object forming a part of the vehicle, comprising:

  • recording a sequence of images of a door of a vehicle with a camera;

    generating a differential image by comparing a currently recorded image of the door with a previously stored image of the door;

    determining whether the door is in an open state or a closed state by evaluating the differential image; and

    if the door is in the open state, switching off a security device protecting at least one occupant of the vehicle.

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