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System for detecting and warning an illegally parked vehicle

  • US 5,343,237 A
  • Filed: 10/01/1991
  • Issued: 08/30/1994
  • Est. Priority Date: 10/08/1990
  • Status: Expired due to Fees
First Claim
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1. A system for detecting and warning an illegally parked vehicle, comprising:

  • a television (TV) camera for imaging a prescribed roadside zone where parking is prohibited at a prescribed time interval and producing a still TV image;

    means for storing said produced still TV image;

    means for storing a TV image of a prescribed pattern painted on said roadside zone without any vehicle present, as a reference image;

    means for comparing said still TV image with said reference so as to periodically produce vehicle presence images indicative of a presence of a vehicle in said roadside zone based upon a shape and position of a portion of said prescribed pattern which is hidden by said vehicle and storing said vehicle presence information image;

    means for detecting a move-off of said vehicle by comparing said vehicle presence images at a prescribed time interval;

    means for warning said vehicle upon detecting that the vehicle has not moved off before expiration of a prescribed time; and

    means for transmitting information of said vehicle to an external control center.

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