Title :
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
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;
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
DOI :
10.1109/ICDAR.1999.791789
