密文域可分离彩色图像双信息隐藏  

Separable Dual Information Hiding Scheme in Encrypted Color Image

作　　者：杨文睿 石慧[1] YANG Wen-rui;SHI Hui(Computer and Information Technology College,Liaoning Normal University,Dalian 116029,China)

机构地区：[1]辽宁师范大学计算机与信息技术学院,辽宁大连116021

出　　处：《软件导刊》2022年第6期210-224,共15页Software Guide

基　　金：辽宁省社会科学规划基金项目(L19BTQ001)。

摘　　要：针对当前彩色图像版权保护难点问题,提出双信息隐藏视角下密文域可分离彩色图像版权保护方案。将载体图像进行RGB分离,在蓝色通道中,采用全位平面旋转加密生成密文域,利用QR分解及奇异值分解确定隐藏位置,基于果蝇优化算法自适应地寻找隐藏强度,并利用FAS将数字版权信息置乱,完成一级鲁棒隐藏;在红色通道中,基于双层视觉密码算法生成密文域,利用HOG特征提取、增强奇异值分解及FOA提取特征向量,并利用LT编码生成初始秘密零信息,结合特征向量、时间戳生成最终版权信息。实验结果表明,隐藏版权信息后的图像质量较高,平均PSNR达到48.4385,平均SSIM达到0.9595,且鲁棒性强,在各类攻击下提取版权信息的NC平均值高达0.9左右。该方案具有双重版权保护功能,能够抵抗常见的几何攻击和噪声攻击,此外在安全性及图像质量等方面均表现较好。Present a separable dual information hiding scheme in encrypted color image,so as to solve the difficult problem of copyright protection.Separate the color carrier image into RGB to obtain three channels of red,green and blue.In the blue channel,firstly,adopt all-bit plane rotation encryption to obtain the ciphertext domain,then use QR decomposition and singular value decomposition(SVD)to determine the hidden position,and then perform fruit fly optimization algorithm(FOA)to get hidden strength,finally,hide the copyright information which is scrambled by the proposed fibonacci-arnold scrambling(FAS).In the red channel,firstly,the newly proposed two-layer visual cryptography method is adopted,then HOG feature extraction,boost normed singular value decomposition(BN-SVD)and FOA are used to extract feature vectors,and then LT coding is conducted to generate initial secret zero-information,finally,combine feature vectors,initial secret zero-information and timestamps to generate final copyright information.In this paper,even in the case of the maximum capacity,the average PSNR and SSIM between watermarked image and original image are 48.4385dB and 0.9595,respectively.It indicates that the proposed scheme holds better visual quality.Furthermore,it holds stronger robustness,and the average NC under various attacks is about 0.9.The proposed scheme realizes dual copyright protection.It achieves strong robustness and can resist geometric attack and noise attack.Therefore,the experimental data show that the proposed method not only has better invisibility and stronger robustness,but also has higher security,and better real-time performance,which is suitable for the copyright protection of high-security color digital images.

关 键 词：图像版权保护 双隐藏 密文域 可分离 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]