A new algorithm of blind color image watermarking based on LU decomposition
A new algorithm of blind color image watermarking based on LU decomposition
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DOI：
10.1007/s11045-017-0487-7
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发表时间：
2017-03
影响因子：
2.5
通讯作者：
Qingtang Su;G. Wang;Xiaofeng Zhang;Gaohuan Lv;Beijing Chen
中科院分区：
文献类型：
--
作者：
Qingtang Su;G. Wang;Xiaofeng Zhang;Gaohuan Lv;Beijing Chen
提出了一种基于LU分解的彩色图像盲水印算法。由于LU分解得到的下三角矩阵的第一列第二行元素和第一列第三行元素具有较高的相似性，通过对规则稍加修改就可以将彩色图像水印嵌入到这些元素中，从而增强水印的不可见性。此外，为了提高水印的安全性，采用Arnold变换，并采用基于MD5的Hash伪随机数算法来提高水印的鲁棒性。在提取过程中，需要根据水印嵌入强度和私钥，以盲的方式从被攻击的宿主图像中提取水印信息。实验结果表明，该方法在不可见性、鲁棒性、嵌入有效载荷和计算复杂度等方面均优于其他相关方法。
This paper proposes a new algorithm of blind color image watermarking based on LU decomposition. Because of the first column the second row element and the first column the third row element of the lower triangular matrix, which obtained by LU decomposition, have higher similarity, and the color image watermark can be embedded into these elements by slightly modifying rules, which can enhance the watermark invisibility. In addition, Arnold transform is applied to improve the watermark security and the Hash pseudo-random number algorithm based on MD5 is used to improve the watermark robustness. In extraction process, the watermark embedding strength and private key are needed to extract watermark information from the attacked host image with blind manner. Experiment results reveal that the proposed method outperforms other related methods in the aspects of the invisibility, robustness, embedding payload and computational complexity.