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Restoration in Secure Text Document Image Authentication Using Erasable Watermarks

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Computational Intelligence and Security (CIS 2005)

Part of the book series: Lecture Notes in Computer Science ((LNAI,volume 3802))

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Abstract

In this paper, we propose a new restoration method for electronic text document images using erasable watermarks. In restoration application, finding sufficient number of low-distortion pixels in a block to embed sufficient information bits and their blind detection is difficult. In the proposed method, an erasable watermark is embedded in each block of a text document image for restoration of the original character sequence. The embedding process introduces some background noise; however the content in the document can be read or understood by the user, because human vision has the inherent capability to recognize various patterns in the presence of noise. After verifying the content of each block, the original image can be restored at the blind detector for further use and analysis. Using the proposed method, it is possible to restore the original character sequence after multiple alterations like character deletion, insertion, substitution and block swapping.

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Author information

Authors and Affiliations

  1. Center for Information Security, School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore

    Niladri B. Puhan & Anthony T. S. Ho

Authors
  1. Niladri B. Puhan
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  2. Anthony T. S. Ho
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Editor information

Editors and Affiliations

  1. Microelectronic Instiute, Xidian University, 710071, Xi’an, China

    Yue Hao

  2. Department of Computer Science, Hong Kong Baptist University, Kowloon Tong, Hong Kong

    Jiming Liu

  3. School of Computer Science and Technology, Xidian University, Xi’an, China

    Yu-Ping Wang

  4. Department of Computer Science, Hong Kong Baptist University, Hong Kong,  

    Yiu-ming Cheung

  5. School of Electrical and Electronic Engineering, University of Manchester, UK

    Hujun Yin

  6. Life Science Research Center, School of Electronic Engineering, Xidian University, 710071, Xi’an, Shaanxi, China

    Licheng Jiao

  7. Key Laboratory of Computer Networks and Information Security(Ministry of Education), Xidian University, 710071, Xi’an, China

    Jianfeng Ma

  8. National Laboratory of Antennas and Microwave Technology, Xidian University, 710071, Xi’an, Shanxi, P.R. China

    Yong-Chang Jiao

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© 2005 Springer-Verlag Berlin Heidelberg

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Puhan, N.B., Ho, A.T.S. (2005). Restoration in Secure Text Document Image Authentication Using Erasable Watermarks. In: Hao, Y., et al. Computational Intelligence and Security. CIS 2005. Lecture Notes in Computer Science(), vol 3802. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11596981_98

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  • DOI: https://doi.org/10.1007/11596981_98

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-30819-5

  • Online ISBN: 978-3-540-31598-8

  • eBook Packages: Computer ScienceComputer Science (R0)

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