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Document Image Retrieval through Word Shape Coding

Shijian Lu, Linlin Li, Chew Lim Tan
2008 IEEE Transactions on Pattern Analysis and Machine Intelligence  
Index Terms Document image retrieval, document image analysis, word shape coding.  ...  The proposed technique retrieves document images by a new word shape coding scheme, which captures the document content through annotating each word image by a word shape code.  ...  DOCUMENT IMAGE RETRIEVAL Based on the word shape coding scheme described above, the content of document images can be captured by the converted word shape codes.  ... 
doi:10.1109/tpami.2008.89 pmid:18787240 fatcat:hq27sysjefcjbg6eyfgo3igtvu

A Survey on Document Image Analysis and Retrieval System

Umesh D. Dixit, Shirdhonkar M.S
2015 International Journal on Cybernetics & Informatics  
The digitization of documents and their availability over the network demands solution toward content based document image analysis, indexing, searching and retrieval.  ...  This paper describes methods and techniques developed for document image analysis and retrieval by researchers.  ...  They retrieved document image by a new word shape coding scheme that captures the document content through annotating each word image by a word shape code.  ... 
doi:10.5121/ijci.2015.4225 fatcat:qy5zdi2mmfgqhjoa5qreq3rr7q

Information Retrieval from Document Image Databases [chapter]

Shijian Lu, Chew Lim Tan
2014 Advances in Digital Document Processing and Retrieval  
Document images can thus be retrieved based on the similarity between the converted document vectors.  ...  This chapter presents a word shape coding approach that retrieves document images without OCR (optical character recognition).  ...  Document images can thus be retrieved based on the similarity between the converted document vectors.  ... 
doi:10.1142/9789814368711_0004 fatcat:4tidgjsb3naxfniqmsubjlandm

The Indexing and Retrieval of Document Images: A Survey

David Doermann
1998 Computer Vision and Image Understanding  
We briefly discuss traditional text indexing techniques on imperfect data and the retrieval of partially converted documents.  ...  One way to provide traditional data-base indexing and retrieval capabilities is to fully convert the document to an electronic representation which can be indexed automatically.  ...  From 1992 through 1996, the University of Nevada, Las Vegas held an annual Symposium on Document Analysis and Information Retrieval [1] .  ... 
doi:10.1006/cviu.1998.0692 fatcat:xxl2ynzjkjbeddk2xwkds2g3jq

Document Image Retrieval with Local Feature Sequences

Jilin Li, Zhi-Gang Fan, Yadong Wu, Ning Le
2009 2009 10th International Conference on Document Analysis and Recognition  
Conference on Document Analysis and Recognition 978-0-7695-3725-2/09 $25.00  ...  In recent years, many document image retrieval algorithms have been proposed. However, most of the current approaches either need good quality images or depend on the page layout structure.  ...  Different from OCR-based methods, image feature based algorithms focus on the image information instead of text information.  ... 
doi:10.1109/icdar.2009.46 dblp:conf/icdar/LiFWL09 fatcat:6ppci2vmgbeevph4nxjaktzwiq

Retrieval of machine-printed Latin documents through Word Shape Coding

Shijian Lu, Chew Lim Tan
2008 Pattern Recognition  
This paper reports a document retrieval technique that retrieves machine-printed Latin-based document images through word shape coding.  ...  The text contents of imaged documents are thus captured by a document vector constructed with the converted word shape code and word frequency information.  ...  Document Image Preprocessing Document images need to be preprocessed before the word shape analysis.  ... 
doi:10.1016/j.patcog.2007.10.017 fatcat:hlmlrjjndnfplgdrwjqqyt4ze4

A Novel Approach for Word Retrieval from Devanagari Document Images

Blessy Varghese, Sharvari Govilkar
2015 International Journal on Natural Language Computing  
We propose a word spotting technique based on codes for matching the word images of Devanagari script.  ...  The shape information is utilised for generating integer codes for words in the document image and these codes are matched for final retrieval of relevant documents.  ...  Word-shape codes are generated from these word-images, and search is carried out for retrieval of relevant documents by matching the word-shape codes of the query word-image with the word-images of the  ... 
doi:10.5121/ijnlc.2015.4402 fatcat:qzsahvhnhnc7topyl4az6hnk5u

Document Image Retrieval: An Overview

M.S. Shirdhonkar, Manesh B. Kokare
2010 International Journal of Computer Applications  
The survey includes papers covering the current state of art on the research in document image retrieval based on images such as signature, logo, machine-print, different fonts etc.  ...  In this paper, we provide a survey of methods developed by researchers to access document images.  ...  It retrieves document image by a new word shape coding scheme, which captures the document content through annotating each word image by a word shape code.  ... 
doi:10.5120/152-274 fatcat:n7ixnkr7unaizmggozjcypd4ji

A brief review of document image retrieval methods: Recent advances

Fahimeh Alaei, Alireza Alaei, Michael Blumenstein, Umapada Pal
2016 2016 International Joint Conference on Neural Networks (IJCNN)  
Due to the rapid increase of different digitized documents, the development of a system to automatically retrieve document images from a large collection of structured and unstructured document images  ...  This paper provides an overview of the methods which have been applied for document image retrieval over recent years.  ...  Shape descriptors based on shape context have been implemented for document image indexing and retrieval in [9] .  ... 
doi:10.1109/ijcnn.2016.7727648 dblp:conf/ijcnn/AlaeiABP16 fatcat:5tzfmk55r5hmpa3tnhcj3chuji

Keyword Spotting and Retrieval of Document Images Captured by a Digital Camera

S. Lu, C.-L. Tan
2007 Proceedings of the International Conference on Document Analysis and Recognition  
Given a camera image of document, text line and word images are first segmented through the connected component analysis.  ...  image into a word shape code.  ...  Keyword Spotting Based on the proposed word shape coding scheme described in the last subsection, word images can be located from camera images of document through a word shape code matching process.  ... 
doi:10.1109/icdar.2007.4377064 dblp:conf/icdar/LuT07b fatcat:lnfcx6hvwzbexlgvfrd3ywinda

Image indexing and retrieval

2010 2010 2nd International Conference on Image Processing Theory, Tools and Applications  
Image Indexing of Text To perform retrieval on text based images one has to characterize the document content in a meaningful way.  ...  Image retrieval systems which are based on either text-based or content-based retrieval (CBIR) have their limitations.  ... 
doi:10.1109/ipta.2010.5586837 fatcat:tabr2rwgjvhqjpjvtcgif2ircm

A Fast Keyword-Spotting Technique

L. Li, S.J. Lu, C.-L. Tan
2007 Proceedings of the International Conference on Document Analysis and Recognition  
The keyword spotting method is based on word shape coding technique. The proposed coding scheme has little ambiguity, and can be swiftly executed.  ...  It is a promising technique to boost better document image retrieval. The strength of the proposed method is demonstrated in a document filtering experiment.  ...  The second group is based on word shape coding [7] [8] [5] . Word shape coding encodes a word image into a sequence of predefined symbols.  ... 
doi:10.1109/icdar.2007.4378677 dblp:conf/icdar/LiLT07 fatcat:a55almjxfzdznp2cslnsqismca


2021 International Journal of Advanced Trends in Engineering Science and Technology  
refining is done on color, shape and texture.  ...  This technique has two processes to perform: firstly, offline process where words are trained using volume package and these trained words are stored in database, secondly, online process, content based  ...  Here visual words that describe the image features is used instead of actual words as in document retrieval.  ... 
doi:10.22413/ijatest/2021/v6/i4/5 fatcat:opbr7y32wvfmfcst7jgvo3borm

Semi-automated document image clustering and retrieval

Markus Diem, Florian Kleber, Stefan Fiel, Robert Sablatnig, Bertrand Coüasnon, Eric K. Ringger
2013 Document Recognition and Retrieval XXI  
In this paper a semi-automated document image clustering and retrieval is presented to create links between different documents based on their content.  ...  The methods presented allow for the analysis of heterogeneous documents that contain printed and handwritten text and allow for a hierarchically clustering with different feature subsets in different layers  ...  The similarity measure is then calculated using region overlaps between the query and the retrieved image. G. Zhu and D. Doermann 9 present document image retrieval based on signature matching.  ... 
doi:10.1117/12.2043010 dblp:conf/drr/DiemKFS14 fatcat:hvqkwxiuzjgnllxe3vvvo5i3nu

Online Information Search from Tamil Document Images in World Wide Web

Abirami. S, Murugappan.S Murugappan.S
2012 International Journal of Computer Applications  
Among the most valuable Web assets, categorizing web images and retrieval of information from the images on the Web is quite difficult.  ...  This paper proposes a simple and effective method to separate the document images from the available web image sources and to retrieve the information present in those web document images.  ...  During this process, document images undergo preprocessing, Feature Extraction and feature strings are generated from the word images based on the statistical features of character shapes.  ... 
doi:10.5120/8039-1350 fatcat:lvv7znsjzrfsnifhuzjggthelm
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