RESTORATION PROCESSING OF CHARACTER PATTERNS WHICH AFFECTS RECOGNITION ACCURACY OF PRINTED KANJI CHARACTERS

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概要

• 論文の詳細を見る

• Current OCR (Optical Character Reader) systems cannot accurately recognize low-resolution printed kanji characters because low-resolution character images involve many jags, blurred or thinned areas after binarization is performed. In this paper, a restoration method is proposed in order to obtain a high-quality binary character pattern from a low-resolution character image. First, the character image is expanded and blurred before being converted into the binary character pattern. Next, the binary character pattern is modified by a system using ridge and ravine points. The feature vectors of the modified character pattern that includes the spatial structure information are extracted by a phrase feature distribution method and they are fed into a classifier. It was verified by experiments using the database that the proposed method improved recognition accuracy.

• 社団法人電子情報通信学会の論文
• 2003-01-14

著者

• Hu Yan

  Graduate School Of Science And Technology Nagasaki University

• Hotta Seiji

  Graduate School of Science and Technology Nagasaki University

• Matsuda Kazuo

  Graduate School of Science and Technology Nagasaki University

• Miyahara Sueharu

  Graduate School of Science and Technology Nagasaki University

関連論文

• RESTORATION PROCESSING OF CHARACTER PATTERNS WHICH AFFECTS RECOGNITION ACCURACY OF PRINTED KANJI CHARACTERS
• AN APPLICATION TO WRITER RECOGNITION USING LETTER-SHAPES INFORMATION OF NON-LINEAR NORMALIZATION

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