Presentation | 2005-03-18 Document Image Retrieval Based on Cross-Ratio and Hashing Tomohiro NAKAI, Koichi KISE, Masakazu IWAMURA, Keinosuke MATSUMOTO, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | In this report, we propose a new method of document image retrieval using digital cameras. The proposed method is to retrieve document images which include parts or the whole of document images acquired by a digital camera. For this purpose, it is required to solve the problem of "perspective distortion" of images, as well as to establish a way for matching parts of document images flexibly. These are achieved based on the following characteristic points of the proposed method : (1) Indexing of document images using the projective invariant called the "cross-ratio", (2) Voting with hashes whose indices are defined by the cross-ratios. From experimental results using digital cameras with high resolution and a camera phone, we demonstrate the effectiveness of the proposed method. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Document image retrieval / Digital camera / Cross-ratio / Hashing / Voting |
Paper # | TL2004-81,PRMU2004-249 |
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Committee | PRMU |
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Conference Date | 2005/3/11(1days) |
Place (in Japanese) | (See Japanese page) |
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Topics (in Japanese) | (See Japanese page) |
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Registration To | Pattern Recognition and Media Understanding (PRMU) |
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Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | Document Image Retrieval Based on Cross-Ratio and Hashing |
Sub Title (in English) | |
Keyword(1) | Document image retrieval |
Keyword(2) | Digital camera |
Keyword(3) | Cross-ratio |
Keyword(4) | Hashing |
Keyword(5) | Voting |
1st Author's Name | Tomohiro NAKAI |
1st Author's Affiliation | Graduate School of Engineering, Osaka Prefecture University() |
2nd Author's Name | Koichi KISE |
2nd Author's Affiliation | Graduate School of Engineering, Osaka Prefecture University |
3rd Author's Name | Masakazu IWAMURA |
3rd Author's Affiliation | Graduate School of Engineering, Osaka Prefecture University |
4th Author's Name | Keinosuke MATSUMOTO |
4th Author's Affiliation | Graduate School of Engineering, Osaka Prefecture University |
Date | 2005-03-18 |
Paper # | TL2004-81,PRMU2004-249 |
Volume (vol) | vol.104 |
Number (no) | 742 |
Page | pp.pp.- |
#Pages | 6 |
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