Camera-based Kanji OCR for mobile-phones: Practical issues

被引:15
作者
Koga, M [1 ]
Mine, R [1 ]
Kameyama, T [1 ]
Takahashi, T [1 ]
Yamazaki, M [1 ]
Yamaguchi, T [1 ]
机构
[1] Hitachi Cent Res Lab, Tokyo, Japan
来源
EIGHTH INTERNATIONAL CONFERENCE ON DOCUMENT ANALYSIS AND RECOGNITION, VOLS 1 AND 2, PROCEEDINGS | 2005年
关键词
D O I
10.1109/ICDAR.2005.65
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
A camera-based optical character reader (OCR) for Japanese Kanji characters was implemented on a mobile-phone. This OCR has three key features. The first is discriminative feature extraction (DFE) which enables a character classifier needing only small memory size. The second is a word-segmentation method specially designed for looking up Japanese words in a dictionary. The third feature is a GUI suitable for a mobile-phone. A prototype mobile-phone Kanji OCR was constructed and experimentally tested. Recognition accuracy of over 95% was obtained under the best conditions, which shows the potential of our prototype as a new type of electronic dictionary.
引用
收藏
页码:635 / 639
页数:5
相关论文
共 11 条
  • [1] Bernsen J., 1986, ICPR 86, P1251
  • [2] Doermann D, 2003, PROC INT CONF DOC, P606
  • [3] Fujisawa H., 1999, Proceedings of the Fifth International Conference on Document Analysis and Recognition. ICDAR '99 (Cat. No.PR00318), P205, DOI 10.1109/ICDAR.1999.791760
  • [4] Koga M., 2004, Systems and Computers in Japan, V35, P49, DOI 10.1002/scj.10616
  • [5] KOGA M, 3 IAPR WORKSH DAS 98, P115
  • [6] Handwritten digit recognition: investigation of normalization and feature extraction techniques
    Liu, CL
    Nakashima, K
    Sako, H
    Fujisawa, H
    [J]. PATTERN RECOGNITION, 2004, 37 (02) : 265 - 279
  • [7] LIU CL, IN PRESS P ICDAR2005
  • [8] SENDA S, 2004, P 2 INT C PERV COMP
  • [9] SENDA S, 2004, PRMU2004124 I EL INF, P7
  • [10] SONKA M, 1998, IMAGE PROCESSING ANA, P124