基于PSNR-NC函数优化和非抽样双树复小波变换的自适应多重水印算法  

Adaptive Multi-Watermarking Algorithm Based on PSNR-NC Function Optimization and Undecimated Dual Tree Complex Wavelet Transform

作　　者：汪贺延 刘国栋 庙存彬 Wang Heyan;Liu Guodong;Miao Cunbin(College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science and Technology,Xi'an,Shaanxi 710021,China;National Demonstration Center for Experimental Light Chemistry Engineering Education,Key Laboratory of Functional Printing and Transport Packaging of China National Light Industry,Shaayixi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development,Key Laboratory of Paper Based Functional Materials of China National Light Industry,Shaanxi University of Science and Technologyy Xi'an,Shaanxi 710021,China)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021 [2]陕西科技大学轻化工程国家级实验教学示范中心,中国轻工业功能印刷与运输包装重点实验室,陕西省造纸技术及特种纸品开发重点实验室,中国轻工业纸基功能材料重点实验室,陕西西安710021

出　　处：《光学学报》2022年第5期44-57,共14页Acta Optica Sinica

基　　金：陕西省西安市未央区科技计划(201916)。

摘　　要：针对多重水印信息的有效嵌入和提取,提出了一种基于峰值信噪比-归一化相关系数函数(PSNR-NC)优化和非抽样双树复小波变换的自适应多重水印算法。该算法首先利用PSNR-NC函数来确定水印的最佳嵌入位置,其次通过非抽样双树复小波变换-奇异值分解(UDTCWT-SVD)算法将多个相互独立的水印信息嵌入到彩色宿主图像中,最后通过水印提取算法在含水印图像中提取多重水印,有效实现了多个版权信息的嵌入和提取。实验结果表明,嵌入水印图像具备良好的不可见性,所提算法对常见的图像处理攻击,特别是在抵抗JPEG压缩、噪声攻击和滤波攻击方面表现出较强的鲁棒性。Aiming at the effective embedding and extraction of multi-watermarking information,an adaptive multiwatermarking algorithm based on peak signal-noise ratio-normalized correlation coefficient function(PSNR-NC)optimization and undecimated dual tree complex wavelet transform is proposed.First,the algorithm uses the PSNR-NC function to determine the best embedding position of the watermark.Then,multiple independent watermarks are embedded into the color host image by the unsampled double tree complex wavelet transform-singular value decomposition(UDTCWT-SVD)algorithm.Finally,the watermark extraction algorithm is used to extract multiple watermarks in the watermarked image,which effectively realizes the embedding and extraction of multiple copyright information.The experimental results show that the embedded watermark image has good invisibility,and the proposed algorithm is robust to common image processing attacks,especially in resisting JPEG compression,noise attacks and filtering attacks.

关 键 词：图像处理:多水印算法 非抽样双树复小波变换 奇异值分解 峰值信噪比-归一化相关系数函数 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]