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-  2018 

基于残差三维直方图调整的H.264可逆信息隐藏

Keywords: 可逆信息隐藏,三维直方图调整,H.264,容量

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Abstract:

在H.264视频的可逆信息隐藏中,直方图调整是一种有效的嵌入算法.为了充分利用系数之间的相关关系,提升嵌入效率,本文在二维直方图调整算法的基础上提出了三维直方图调整的方案.该方案从经过量化离散余弦变换后的4×4块中随机选择三个交流系数作为嵌入单元,通过对该单元的值进行调整,实现信息的嵌入.实验结果显示,与二维直方图调整算法相比,本文算法在峰值信噪比(PSNR)下降不到0.1%的情况下,将嵌入容量最多提升了11.4%

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