DEVELOPMENT OF VEHICLE LICENSE PLATE RECOGNITION SYSTEM

A vehicle license plate recognition system which can be applied to various ITS application systems has been developed. This paper reports on the character recognition, the most important technology in vehicle license plate recognition. In the vehicle license plate character recognition, it is necessary to recognize the low-quality characters such as those half hidden, partially erased, linked or deformed. The character recognition method consists of the character string extraction using its geometric characteristics, segmentation of character by using dynamic programming, and character recognition using its outline characteristics and statistic method. By integrating this character recognition method onto the vehicle license plate recognition system, success of 99% or higher has been achieved in domestic operation of character recognition, and 97% or higher in foreign tests. For the covering abstract, see IRRD 490001.

• Corporate Authors:

  ERTICO

  326 Avenue Louis
  Brussels,   Belgium  B-1050

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036

  VERTIS

  TORANOMOM 34 MORI BUILDING 1-25-5
  TORANOMON, MINATOKU, TOKYO 105  Japan 
• Authors:
  • TAMAGAWA, M
  • Miyamoto, K
  • KAYATAMA, S
• Conference:
  • MOBILITY FOR EVERYONE. 4TH WORLD CONGRESS ON INTELLIGENT TRANSPORT SYSTEMS, 21-24 OCTOBER 1997, BERLIN. (PAPER NO. 3011)
• Publication Date: 1997

Language

• English

Media Info

• Features: References;
• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Conferences; Data collection; Intelligent transportation systems; License plates; Technology
• ITRD Terms: 8531: Case study; 8525: Conference; 8623: Data acquisition; 1346: Number plate; 3855: Technology
• Subject Areas: Operations and Traffic Management;

Filing Info

• Accession Number: 00757181
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Dec 17 1998 12:00AM