Improvement of handwritten Japanese character recognition using weighted direction code histogram
Identifieur interne : 002643 ( Istex/Corpus ); précédent : 002642; suivant : 002644Improvement of handwritten Japanese character recognition using weighted direction code histogram
Auteurs : Fumitaka Kimura ; Tetsushi Wakabayashi ; Shinji Tsuruoka ; Yasuji MiyakeSource :
- Pattern Recognition [ 0031-3203 ] ; 1996.
Abstract
Several algorithms for preprocessing, feature extraction, pre-classification, and main classification are experimentally compared to improve the recognition accuracy of handwritten Japanese character recognition. The compared algorithms are three types of nonlinear normalization for the preprocessing, the discriminant analysis and the principal component analysis for the feature extraction, the minimum distance classifiers and the linear classifier for the high-speed pre-classification, and modified Bayes classifier and subspace method for the robust main classification. The performance of the recognition algorithm is fully tested using the ETL9B character database. The recognition accuracy of 99.15% at the recognition speed of eight characters per second is achieved. This accuracy is the best one ever reported for the database.
Url:
DOI: 10.1016/S0031-3203(96)00153-7
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<front><div type="abstract" xml:lang="en">Several algorithms for preprocessing, feature extraction, pre-classification, and main classification are experimentally compared to improve the recognition accuracy of handwritten Japanese character recognition. The compared algorithms are three types of nonlinear normalization for the preprocessing, the discriminant analysis and the principal component analysis for the feature extraction, the minimum distance classifiers and the linear classifier for the high-speed pre-classification, and modified Bayes classifier and subspace method for the robust main classification. The performance of the recognition algorithm is fully tested using the ETL9B character database. The recognition accuracy of 99.15% at the recognition speed of eight characters per second is achieved. This accuracy is the best one ever reported for the database.</div>
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