基于SSA和RIFT的多重联合域鲁棒水印算法  

A robust watermarking algorithm based on SSA and RIFT in multiple joint domains

作　　者：李帅 龙华[1,2] 杜庆治 周筝[1] 梁昌侯 LI Shuai;LONG Hua;DU Qing-Zhi;ZHOU Zheng;LIANG Chang-Hou(Faculty of Information Engineering and Automation,Kunming University of Science and Technology,Kunming 650500,China;Yunnan Key Laboratory of Media Convergence,Kunming 650228,China)

机构地区：[1]昆明理工大学信息工程与自动化学院,昆明650500 [2]云南省媒体融合重点实验室,昆明650228

出　　处：《四川大学学报（自然科学版）》2024年第2期59-69,共11页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金(61761025);云南省媒体融合重点实验室开放基金(320225403)。

摘　　要：数字水印技术是数字版权保护的关键技术之一.针对目前数字水印的鲁棒性仍有待提高的问题,提出了一种基于麻雀搜索算法SSA和辐射不变特征变换RIFT的多重联合域的鲁棒水印算法.首先,对原始载体图像进行冗余离散小波变换RDWT,提取低频子带进行海森堡分解HD,再取载体矩阵进行奇异值分解SVD.其次,对水印图像进行离散小波变换DWT,取低频子带进行SVD.然后利用嵌入规则,将水印嵌入到原始载体图像中,得到含水印的载体图像.此外,利用SSA对嵌入强度进行自适应优化.对于旋转攻击,利用RIFT进行旋转校正.实验结果表明,含水印的载体图像的峰值信噪比在35 dB左右,结构相似度在0.997以上.针对不同攻击,提取的水印归一化相关系数大多在0.97以上.所提算法相较于其他算法表现出较好的不可感知性和鲁棒性.Digital watermarking technology is one of the key technologies of digital copyright protection.Aiming at the robustness improvement of digital watermark,a robust watermarking algorithm is proposed based on Sparrow Search Algorithm(SSA)and Radiation-variation Insensitive Feature Transform(RIFT)in multiple joint domains is proposed.Firstly,Redundant Discrete Wavelet Transform(RDWT)is performed on the original carrier image to extract low-frequency sub-band for Hessenberg Decomposition,and singular value decomposition(SVD)is then taken on the carrier matrix.Secondly,Discrete Wavelet Transform(DWT)is performed on the watermark image,and the low-frequency sub-band is taken for SVD.The watermark is then embedded into the original carrier image with the embedding rule,and the watermarked im‑age is obtained.Additionally,SSA is used to adaptively optimize the embedding strength.For the rotation attack,RIFT is used to carry out rotation correction.Experimental results show that the peak signal-to-noise ratio of the watermarked image is around 35 dB and the structural similarity is above 0.997.For different attacks,the normalized correlation coefficient of the extracted watermark is mostly above 0.97.The proposed algorithm shows better imperceptibility and robustness than other algorithms.

关 键 词：数字水印 旋转校正 海森堡分解 麻雀搜索算法 辐射不变特征变换 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]