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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/2057

    Title: Authentication of Binary Document Images Based on Embedding the BCH Codes of Watermarks
    Authors: Ming-Kao Hsu;Da-Chun Wu
    Contributors: Department of Information Management, Ming Chuan University
    Keywords: watermarking;authentication;binary imageBCh
    Date: 2007-01
    Issue Date: 2009-10-13 14:58:13 (UTC+8)
    Publisher: Asia University
    Abstract: Many commercial documents are easily transmitted via FAX or Internet. This paper explores a
    novel technique for the authentication of binary document images. An authentication method which
    uses BCH error correction codes is proposed. Logos or secret information in the forms of BCH codes
    are embedded in document images as the authentication signals. Even-odd relationships of lengths of
    run pairs are used for embedding information in binary images. We slightly adjust the length of run to
    represent the embedding bit value without causing noticeable differences. A controlled threshold is also
    introduced, for considerations of human perception, to filter out all those runs with too small a length.
    An authenticated resulting image is created in the authentication process, the embedded Logos or secret
    information is also extracted in the same time. The authentication jobs can be carried out without
    referencing the original document images. Experimental results show the feasibility of the proposed
    Relation: Asian Journal of Health and Information Sciences 1(4):446-455
    Appears in Collections:[Asian Journal of Health and Information Sciences] v.1 n.4

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