Presentation 2006-02-24
Area Ratio as Supplementary Information for Camera-Based Character Recognition
Shinichiro OMACHI, Masakazu IWAMURA, Seiichi UCHIDA, Koichi KISE,
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Abstract(in English) In order to achieve a highly accurate recognition of characters in a scene image with a digital camera, there are some attempts on offering supplementary information for recognition with a character image. The information should be robust against geometric distortions since an image taken by a digital camera is usually geometrically distorted. In this paper, we propose a method of embedding information in a character pattern by designing a character pattern in two colors so that the information is embedded as the area ratio of the two colors. It is expected that the area ratio is correctly extracted even if the character pattern is affine-transformed since the area ratio is affine invariant. We evaluate generated character patterns with the embedded information and discuss the effectiveness of the proposed method.
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Keyword(in English) Affine invariants / Area ratio / Information embedment / Supplementary information / Character recognition
Paper # TL2005-78,PRMU2005-213
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Committee TL
Conference Date 2006/2/17(1days)
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Registration To Thought and Language (TL)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Area Ratio as Supplementary Information for Camera-Based Character Recognition
Sub Title (in English)
Keyword(1) Affine invariants
Keyword(2) Area ratio
Keyword(3) Information embedment
Keyword(4) Supplementary information
Keyword(5) Character recognition
1st Author's Name Shinichiro OMACHI
1st Author's Affiliation Graduate School of Engineering, Tohoku University()
2nd Author's Name Masakazu IWAMURA
2nd Author's Affiliation Graduate School of Engineering, Osaka Prefecture University
3rd Author's Name Seiichi UCHIDA
3rd Author's Affiliation Faculty of Information Science and Electrical Engineering, Kyushu University
4th Author's Name Koichi KISE
4th Author's Affiliation Graduate School of Engineering, Osaka Prefecture University
Date 2006-02-24
Paper # TL2005-78,PRMU2005-213
Volume (vol) vol.105
Number (no) 613
Page pp.pp.-
#Pages 6
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