ASIA unversity:Item 310904400/4403
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    ASIA unversity > 資訊學院 > 資訊傳播學系 > 期刊論文 >  Item 310904400/4403


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    题名: Watermark approach to embedded signature-based authentication by channel statistics
    作者: Z. F. Yang;W. H. Tsai
    贡献者: Department of Information Communication
    日期: 2003-04
    上传时间: 2009-11-25 10:31:13 (UTC+8)
    出版者: Asia University
    摘要: Embedded signature-based authentication is a highly promising watermarking method for solving high-level authentication problems. This work proposes such a watermarking approach using channel statistics evaluated from a reference watermark. The basic concept is to consider the problem to be an example of communications with side information, which is the reference watermark embedded in the host with the signature at the sender site. At the receiver site, the reference watermark is first extracted to determine channel statistics, which are used to generate information about signature reliability. Three kinds of information are derived, including a reliability measure, an entropy measure, and an authenticated signature. Experimental results establish that the measures of reliability and uncertainty are meaningful, and that the embedded signature can survive high-quality JPEG compression and manipulations such as negation, cropping, replacement, and modification.
    關聯: Optical Engineering 42 (4): 1157-1165
    显示于类别:[資訊傳播學系] 期刊論文

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