正六角形ゾーニングによる文字認識の高精度化
正六角形ゾーニングによる文字認識の高精度化
カテゴリ: 論文誌(論文単位)
グループ名: 【C】電子・情報・システム部門
発行日: 2014/12/01
タイトル(英語): Accuracy Improvement of Character Recognition by Hexagonal Zoning
著者名: 大山 航(三重大学 大学院工学研究科),山本 暁仁(三重大学 大学院工学研究科),若林 哲史(三重大学 大学院工学研究科),木村 文隆(三重大学 大学院工学研究科)
著者名(英語): Wataru Ohyama (Graduate School of Engineering, Mie University), Akihito Yamamoto (Graduate School of Engineering, Mie University), Tetsushi Wakabayashi (Graduate School of Engineering, Mie University), Fumitaka Kimura (Graduate School of Engineering, Mie University)
キーワード: 正六角形ゾーニング,文字認識,濃度こう配特徴,擬似ベイズ識別関数 hexagonal zoning,character recognition,gradient feature,pseude-Bayes discriminant function
要約(英語): Accurate off-line character recognition is still very important for camera based printed document analysis. Due to its inherent conceptual and technical simplicity, conventional recognition strategies relied on features extracted using square block zoning of a character image. In this paper, we propose an isotropic feature extraction method using regular hexagonal zoning and empirically confirm its effectiveness for printed and handwritten character recognition. We accomplished printed character recognition and handwritten character recognition experiments using large-scale evaluating datasets. The average accuracy was improved by 2 % in experiments using gradient features. And the effectiveness of hexagonal zoning for recognition of high stroke count characters and low-resolution characters is confirmed in both printed and handwritten character recognition by the experiments.
本誌: 電気学会論文誌C(電子・情報・システム部門誌) Vol.134 No.12 (2014) 特集:電気関係学会東海支部連合大会
本誌掲載ページ: 1824-1831 p
原稿種別: 論文/日本語
電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/134/12/134_1824/_article/-char/ja/
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