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数字水印的去同步攻击及其对策

DOI: 10.11834/jig.20050482

Keywords: 攻击,同步,数字水印技术,数字媒体,几何变形,仿射变换,新算法,检测器,失效,扭曲,局域

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Abstract:

有望解决数字媒体版权纠纷的数字水印技术日渐成熟,新算法不断涌现,面临的攻击也与日俱增。去同步攻击通过几何变形使得相关检测器失效,是一个很难应付的攻击。该攻击主要包括全局仿射变换攻击和局域任意扭曲攻击两种。有很多算法能很好对付前者,但后者几乎使现存的所有算法失效。本文对各种对付去同步攻击的对策分类加以综述,并分析了各自的不足,最后指出如何有效地抵御局域任意扭曲攻击依然是一个悬而未决的课题,尚值得深入研究。

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