DEPLOYMENT OF AUTOMATED LICENSE PLATE READING SYSTEMS FOR TRAFFIC MANAGEMENT, HIGHWAY SAFETY AND AREA SECURITY

A machine vision system capable of automatically processing license plate images from videotape or live video is described. A special feature of this system identifies the presence of a license plate anywhere in the field of view and captures this license plate image for subsequent processing and transcription to a computer file using optical character recognition techniques. The captured video license plate image can also be presented to a human operator for manual transcription. The video/machine vision system functions equally well with overhead views of traffic, such as from highway overpasses, and with roadside views from highway shoulders and medians. It operates effectively at all highway speeds without supplemental lighting under most weather conditions during daylight hours and, with supplemental lighting, at night. The self-triggering plate capture feature obviates the need for external triggers such as treadles or light beams to signal the presence of a vehicle in a given video frame. As such, the system is mobile and extremely flexible and is well suited both for collecting data at multiple sites for a one or two day period and for semi-permanent or permanent installations

• Supplemental Notes:
  • Publication Date: 1997 Published By: ITS America, Washington DC
• Corporate Authors:

  Honda Gijutsu Kenkyujo

  ,    

  Sumitomo Denki Kogyo Kabushiki Kaisha

  ,    

  University of Michigan Transportation Research Institute

  2901 Baxter Road
  Ann Arbor, MI  United States  48109-2150

  Maryland State Highway Administration

  2323 West Joppa Road
  Brooklandville, MD  United States  21022

  Morgan State University

  National Transportation Center, 1700 East Cold Spring Lane
  Baltimore, MD  United States  21251

  PB Farradyne

  444 South Flower Street, Suite 3700
  Los Angeles, CA  United States  90071

  Viggen Corporation

  ,    

  University of Massachusetts, Amherst

  Department of Civil and Environmental Engineering
  130 Natural Resources Road
  Amherst, MA  United States  01003

  Transformation Systems, Incorporated

  2537 S Gessner, Suite 212
  Houston, TX  United States  77063

  University of California, Davis

  Plug-in Hybrid & Electric Vehicle Research Center, Institute of Transportation Studies
  Davis, CA  United States  95616

  University of Wisconsin, Madison

  Department of Civil and Environmental Engineering
  1415 Engineering Drive
  Madison, WI  United States  53706

  Texas Transportation Institute

  Texas A&M University System, 3135 TAMU
  College Station, TX  United States  77843-3135

  I-95 Corridor Coalition

  8614 Westwood Center Drive, Suite 310
  Vienna, VA  United States  22182

  Kimley-Horn and Associates, Incorporated

  ,    

  Institute for Telecommunication Sciences

  Department of Commerce
  Boulder, CO  United States  80302

  Japan. Keisatsucho

  ,    

  Omron Corporation

  Traffic Solutions Division
  2-2-1, Nishikusatsu,
  Kusatsu-city, Shiga-prefecture  Japan  525-0035

  Guidestar (Program : Minnesota)

  ,    

  University of Minnesota, Minneapolis

  Center for Transportation Studies, 511 Washington Avenue, SE
  Minneapolis, MN  United States  55455-0375

  Colorado Springs (Colo.)

  ,    

  Siecor Corporation

  ,    

  Hughes Aircraft Company

  1901 West Malvern Avenue
  Fullerton, CA  United States  92634-3310

  National Automated Highway System Consortium

  3001 West Big Beaver Road, Suite 500
  Troy, MI  United States  48084

  Mitretek Systems

  3150 Fairview Park Drive
  Falls Church, VA  United States  22042

  Minnesota. Department of Transportation

  St Paul, Minnesota  United States 

  Johns Hopkins University, Laurel

  Applied Physics Laboratory, 11100 Johns Hopkins Road
  Laurel, MD  United States  20723-6099

  National Engineering Technology Corporation

  ,    

  California Department of Transportation

  District 7, 120 S Spring Street
  Los Angeles, CA  United States  90012

  California Department of Transportation

  District 12
  , CA  United States 

  Virginia Polytechnic Institute and State University, Blacksburg

  Department of Agronomy
  Blacksburg, VA  United States  24061

  University of California, Berkeley

  California PATH Program, Institute of Transportation Studies
  Richmond Field Station, 1357 South 46th Street
  Richmond, CA  United States  94804-4648
• Authors:
  • Shuldiner, Paul W
  • Woodson, Jeffrey B
• Conference:
  • ITS America 7th Annual Meeting and Exposition: Merging the Transportation and Communications Revolutions
  • Location: Washington DC, United States
  • Date: 1997-0-0 to 1997-0-0
• Publication Date: 1997

Language

• English

Media Info

• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Image processing; License plates; Optical scanners
• Subject Areas: Vehicles and Equipment;

Filing Info

• Accession Number: 00777134
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: PATH, STATEDOT
• Created Date: Nov 17 1999 12:00AM