Camera-Based Document Image Retrieval as Voting for Partial Signatures of Projective Invariants
| 言語 | 英語 |
|---|---|
| 種類 | 国際会議等の予稿 |
| 著者 | Tomohiro Nakai，Koichi Kise，Masakazu Iwamura |
| 論文名 | Camera-Based Document Image Retrieval as Voting for Partial Signatures of Projective Invariants |
| 論文誌名 | Proc. 8th International Conference on Document Analysis and Recognition (ICDAR2005) |
| ページ | pp.379-383 |
| 発表場所 | Seoul, South Korea |
| 査読の有無 | 有 |
| 年月 | 2005年9月 |
| 分野 | 文書画像解析, 文書画像検索 |
| DOI | 10.1109/ICDAR.2005.64 |
| キー | Nakai2005_ICDAR (id=366) |
要約
We propose a method of document image retrieval using digital cameras. The proposed method takes as input a part or the whole of a document acquired as a query by a digital camera, and retrieves a document image that includes the query. For this purpose, it is required to solve the problem of "perspective distortion" of images, as well as to establish a way of matching parts of document images flexibly. These are achieved based on the following characteristics of the proposed method: (1) Indexing of document images using the projective invariants called the "cross-ratios", (2) Retrieval as voting for partial signatures of document images defined by the cross-ratios. From experimental results using digital cameras with high and low resolutions, we demonstrate the effectiveness of the proposed method.
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