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    政大機構典藏 > 理學院 > 應用數學系 > 期刊論文 >  Item 140.119/68421
    Please use this identifier to cite or link to this item: http://nccur.lib.nccu.edu.tw/handle/140.119/68421


    Title: Enhancing image watermarking methods with/without reference images by optimization on second-order statistics.
    Authors: 曾正男
    Tzeng,Jeng-Nan
    Hwang,WL
    Chern,IL
    Contributors: 應數系
    Date: 2002.07
    Issue Date: 2014-08-07 11:35:55 (UTC+8)
    Abstract: The watermarking method has emerged as an important tool for content tracing, authentication, and data hiding in multimedia applications. We propose a watermarking strategy in which the watermark of a host is selected from the robust features of the estimated forged images of the host. The forged images are obtained from Monte Carlo simulations of potential pirate attacks on the host image. The solution of applying an optimization technique to the second-order statistics of the features of the forged images gives two orthogonal spaces. One of them characterizes most of the variations in the modifications of the host. Our watermark is embedded in the other space that most potential pirate attacks do not touch. Thus, the embedded watermark is robust. Our watermarking method uses the same framework for watermark detection with a reference and blind detection. We demonstrate the performance of our method under various levels of attacks.
    Relation: IEEE Trans. Image Processing,11(7)771-782
    Data Type: article
    Appears in Collections:[應用數學系] 期刊論文

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