| 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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| PDF Download Page |  PDF download Page Link |
| 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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| Conference Information | |
| Committee | PRMU |
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| Conference Date | 2005/3/11(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| 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 |
| Date of Issue | |