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논문 기본 정보

자료유형
학술대회자료
저자정보
Hiroaki Nagaoka (Yamaguchi University) Mitsuru Nakata (Yamaguchi University) Qi-Wei Ge (Yamaguchi University) Makoto Yoshimura (Yamaguchi University)
저널정보
대한전자공학회 ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications ITC-CSCC 2015
발행연도
2015.6
수록면
222 - 225 (4page)

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초록· 키워드

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In this paper, we propose a retrieval method of similar subgraphs in order to obtain similar partial images used in Japanese historical documents image retrieval system. In our system, the structure of characters is represented by a feature graph, and the structure of a string of each line of Japanese historical documents is stored as a feature graph which is called “document graph”. The structure of a string to be searched is specified as a feature graph that is called “search graph”. A search graph contains an “essential graph”, which shows an indispensable structure included in search results. The processes to search similar partial images are as follows: (1) get subgraphs of document graphs that are isomorphic to the essential graph, and construct candidates of search result from these subgraphs; (2) remove improper candidates based on some conditions; (3) calculate the similarities between remaining candidates and the search graph (these remaining candidates are called “similar subgraph”); (4) clip the partial areas as the search results, which correspond to similar subgraphs with high similarity from Japanese historical document images.

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Abstract
1. Introduction
2. Outline of our document search system
3. Similar subgraph retrieving
4. Indexing mechanism of isomorphic subrgraphs
5. Current status and issues
References

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UCI(KEPA) : I410-ECN-0101-2016-569-001695986