A method for street number matching in Japanese address recognition

Author

Ogata, Hisao ; Ueda, Yoo ; Marukawa, Katsumi ; Sako, Hiroshi ; Fujisawa, Hiromichi

Author_Institution

Central Res. Lab., Hitachi Ltd., Tokyo, Japan

fYear

1999

fDate

20-22 Sep 1999

Firstpage

321

Lastpage

324

Abstract

A method for street number matching in Japanese address recognition is presented. This method uses the knowledge about the number expression formats, which is represented by the expression patterns of street numbers. The expression patterns are composed of character class symbols which represent numerals and delimiter characters. By matching the expression patterns against the character candidates in the lattice which is the result of character recognition, the class symbol lattice is generated. In the class symbol lattice, the numeral and delimiter character candidates are replaced by the corresponding class symbol. An experiment using 6,136 expression patterns showed that 93% of street numbers on the test mail-pieces were correctly recognized

Keywords

character recognition; optical character recognition; pattern matching; Japanese address recognition; character class symbols; character recognition; class symbol lattice; expression patterns; number expression formats; patterns matching; street number matching; Character recognition; Cities and towns; Electronic switching systems; Laboratories; Lattices; Optical character recognition software; Pattern recognition; Postal services; Sorting; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Document Analysis and Recognition, 1999. ICDAR '99. Proceedings of the Fifth International Conference on

Conference_Location

Bangalore

Print_ISBN

0-7695-0318-7

Type

conf

DOI

10.1109/ICDAR.1999.791789

Filename

791789