基于SVD的特征量差值移位图像隐蔽通信技术  

Image Stealth Communication Technology based on SVD Feature Difference Shift

作　　者：杨雯 冯丹青 陈亮 YANG Wen;FENG Dan-qing;CHEN Liang(National Defense University of Science and Technology,Jiangsu Nanjing 210007,China;The Army Engineering University of PLA,Jiangsu Nanjing 210000,China)

机构地区：[1]国防科技大学,江苏南京210007 [2]陆军工程大学,江苏南京210000

出　　处：《通信技术》2019年第8期1957-1961,共5页Communications Technology

基　　金：国家自然科学基金(No.61072042)~~

摘　　要：提出了一种基于图像信息隐藏的密文隐蔽通信技术。兼顾携密载体的透明性和鲁棒性,设计了基于SVD的特征量差值移位的隐藏算法。将SVD最大奇异值作为特征量,根据其差值和阈值的关系,在通信发送端和接收端实现密文的嵌入和盲提取。实验结果表明:该技术可实现大容量密文的传输,且携密图像载体的视觉质量良好,对JPEG压缩和噪声攻击等具有较好的性能,为基于计算机网络及多种通信系统的隐蔽通信提供了实现途径。A ciphertext stealth communication technology based on image information hiding is proposed.Considering the transparency and robustness of the encrypted-image carrier,a hiding algorithm based on SVD feature difference shift is designed.The maximum singular value of SVD is taken as the characteristic quantity,and according to the relationship between the difference and the threshold value,the ciphertext is embedded and extracted blindly at both the sender and receiver of communication.The experimental results indicate that this technology can realize the transmission of large capacity ciphertext,and the visual quality of the encrypted image carrier is good,and it has good performance for JPEG compression and noise attack.And all this provides a way to realize the covert communication based on computer network and various communication systems.

关 键 词：奇异值分解 隐蔽通信 差值移位 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]