ASIA unversity:Item 310904400/2057
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    题名: Authentication of Binary Document Images Based on Embedding the BCH Codes of Watermarks
    作者: Ming-Kao Hsu;Da-Chun Wu
    贡献者: Department of Information Management, Ming Chuan University
    关键词: watermarking;authentication;binary imageBCh
    日期: 2007-01
    上传时间: 2009-10-13 14:58:13 (UTC+8)
    出版者: Asia University
    摘要: 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
    關聯: Asian Journal of Health and Information Sciences 1(4):446-455
    显示于类别:[Asian Journal of Health and Information Sciences] v.1 n.4


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