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

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.