通用径向复指数变换的图像鲁棒水印算法  

Image robust watermarking algorithm based on universal radial complex exponential transformation

作　　者：李小霞 刘西林 LI Xiao-xia;LIU Xi-lin(Fuzhou Preschool Education College,Fuzhou 344000,Jiangxi Province,China;College of Data Science,Taiyuan University of Technology,Taiyuan 030000,China)

机构地区：[1]抚州幼儿师范高等专科学校数计系,江西抚州344000 [2]太原理工大学大数据学院,太原030000

出　　处：《信息技术》2024年第10期156-161,共6页Information Technology

基　　金：江西省教育厅科学技术研究项目(GJJ213804)。

摘　　要：针对图像水印对噪声和几何攻击的鲁棒性差的问题,文中提出了一种通用径向复指数变换的鲁棒水印算法。该算法通过调整选取的通用径向复指数变换的变换系数幅值大小并嵌入图像,在提取水印过程,通过水印图像计算变换系数,从而获得水印。实验结果显示了通用径向复指数变换的参数取不同值时,该水印算法对噪音、滤波和几何攻击的鲁棒性,验证了通用径向复指数变换的参数适当选取时,该水印算法对中心修剪攻击的鲁棒性更强。To solve the problem of poor robustness of image watermarking to noise and geometric attacks,this paper proposes a robust watermarking algorithm based on general radial complex exponential transformation.The algorithm adjusts the magnitude of the transformation coefficient of the selected universal radial complex exponential transformation and embeds it into the image.During the watermark extraction process,the transformation coefficient is calculated through the watermark image to obtain the watermark.The experiment results show that the watermarking algorithm is robust to noise,filtering and geometric attacks when the parameters of the universal radial complex exponential transform are different.It is verified that the watermarking algorithm is more robust to center pruning attacks when the parameters of the universal radial complex exponential transform are properly selected.

关 键 词：水印 通用径向复指数变换 不变矩 鲁棒性 变换系数 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]