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电子学报  2001 

基于三维DCT的彩色图象自适应水印算法

, PP. 1778-1781

Keywords: 彩色图象水印,3D-DCT,彩色视觉特性,自适应水印,稳健性

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Abstract:

本文提出了一种基于3D-DCT的彩色图象自适应水印算法.证实了RGB彩色图象的3D-DCT比2D-DCT具有更好的能量汇聚性质并因此具有更大的感觉容量,从而允许嵌入更强的水印信号.在此基础上,提出了利用人眼彩色视觉特性来自适应控制水印嵌入强度的方法.实验证明该算法较好地平衡了隐形水印的不可见性和稳健性之间的矛盾,所隐藏的水印对常规性攻击,如JPEG压缩、加性噪声、图象滤波、彩色变化和亮度/对比度变化等,具有很好的抵抗能力.

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