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Title: Retrieval of machine-printed Latin documents through Word Shape Coding
Authors: Lu, S.
Tan, C.L. 
Keywords: Document image analysis
Language identification
Multilingual document retrieval
Word shape coding
Issue Date: 2008
Citation: Lu, S., Tan, C.L. (2008). Retrieval of machine-printed Latin documents through Word Shape Coding. Pattern Recognition 41 (5) : 1816-1826. ScholarBank@NUS Repository.
Abstract: This paper reports a document retrieval technique that retrieves machine-printed Latin-based document images through word shape coding. Adopting the idea of image annotation, a word shape coding scheme is proposed, which converts each word image into a word shape code by using a few shape features. The text contents of imaged documents are thus captured by a document vector constructed with the converted word shape code and word frequency information. Similarities between different document images are then gauged based on the constructed document vectors. We divide the retrieval process into two stages. Based on the observation that documents of the same language share a large number of high-frequency language-specific stop words, the first stage retrieves documents with the same underlying language as that of the query document. The second stage then re-ranks the documents retrieved in the first stage based on the topic similarity. Experiments show that document images of different languages and topics can be retrieved properly by using the proposed word shape coding scheme. © 2007 Elsevier Ltd. All rights reserved.
Source Title: Pattern Recognition
ISSN: 00313203
DOI: 10.1016/j.patcog.2007.10.017
Appears in Collections:Staff Publications

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