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Title: Imaged document text retrieval without OCR
Authors: Tan, C.L. 
Huang, W. 
Yu, Z.
Xu, Y.
Keywords: Document image analysis
Document vector
Text retrieval
Text similarity
Issue Date: 2002
Citation: Tan, C.L.,Huang, W.,Yu, Z.,Xu, Y. (2002). Imaged document text retrieval without OCR. IEEE Transactions on Pattern Analysis and Machine Intelligence 24 (6) : 838-844. ScholarBank@NUS Repository.
Abstract: We propose a method for text retrieval from document images without the use of OCR. Documents are segmented into character objects. Image features, namely, the Vertical Traverse Density (VTD) and Horizontal Traverse Density (HTD), are extracted. An n-gram based document vector is constructed for each document based on these features. Text similarity between documents is then measured by calculating the dot product of the document vectors. Testing with seven corpora of imaged textual documents in English and Chinese as well as images from UW1 database confirms the validity of the proposed method.
Source Title: IEEE Transactions on Pattern Analysis and Machine Intelligence
ISSN: 01628828
DOI: 10.1109/TPAMI.2002.1008389
Appears in Collections:Staff Publications

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