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基于Markov链安全性的二阶统计保持隐写算法

DOI: 10.11834/jig.20100803

Keywords: 信息隐藏,隐写,Markov链,统计二阶保持

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Abstract:

如何设计高阶统计安全的大容量隐写算法是当前隐写研究的难点和热点。该文基于Markov链安全性指标和动态补偿的思路,提出一种二阶统计保持的隐写算法。该算法在不降低嵌入量的前提下尽量保持了载体图像的二阶统计特性。实验结果表明,该算法在较大容量数据嵌入过程中,能较好保持二阶统计特性,取得隐写安全性的提高。

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