一种基于保守超混沌系统的脆弱水印算法  

A Fragile Watermarking Algorithm Based on Conservative Hyperchaotic System

作　　者：赵中军[1] 杜久龙 邓雷升[1] 韦希明 ZHAO Zhongjun;DU Jiulong;DENG Leisheng;WEI Ximing(No.30 Institute of CETC,Chengdu Sichuan 610041,China)

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041

出　　处：《通信技术》2024年第4期409-415,共7页Communications Technology

基　　金：四川省科技计划资助基金项目(2023YFG0143)。

摘　　要：提出了一种新颖的基于混沌系统的数字图像脆弱水印算法。所提出的方案引入了一个高维保守超混沌系统与数字图像关联生成混沌序列,通过转置卷积重构后得到水印信息,将其嵌入到图像像素的最低有效位(Least Significant Bit,LSB)。相比耗散混沌,保守超混沌系统因其不具有混沌吸引子的性质和超混沌特性,可以在符合人眼视觉的掩蔽性的同时,增强安全性能。实验结果表明,该方法安全可靠,能够在各种攻击下获得较高的篡改检测和定位精度。A novel fragile watermarking algorithm for digital images based on chaotic system is proposed.The proposed scheme introduces a high-dimensional conservative hyperchaotic system,which is associated with digital images to generate chaotic sequences.After reconstruction through transposed convolution,the watermark information is obtained and embedded into LSB(Least Significant Bit)of the image pixels.Compared to dissipative chaos,the conservative hyperchaotic system does not have the properties of chaotic attractors but has hyperchaotic characteristics,and thus can enhance security performance while comply with the masking properties of human vision.The experimental results indicate that the method is safe,reliable and can achieve high tampering detection and positioning accuracy under various attacks.

关 键 词：脆弱水印 保守混沌系统 超混沌系统 图像篡改检测 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]