基于运动矢量的视频隐写方法  

Video steganography based on motion vector

作　　者：相丽[1] 潘峰[1,2] 钮可[1] 郭耀[1] 

机构地区：[1]武警工程学院网络与信息安全武警部队重点实验室,西安710086 [2]武警工程学院信息安全研究所,西安710086

出　　处：《计算机应用》2010年第11期3022-3024,共3页journal of Computer Applications

基　　金：国家自然科学基金资助项目(60842006);武警工程学院基础研究基金资助项目

摘　　要：为减小秘密信息嵌入对载体视频的修改率,提出了一种基于运动矢量及线性分组码的视频隐写方法。该方法在原始视频进行H.264压缩过程中将秘密信息嵌入到其运动矢量中。线性分组码的使用不仅可大幅提高载体视频的运动矢量利用率,而且可有效降低运动矢量修改率。所提算法不仅具有计算复杂度低、视觉不可见性高的特点,而且可以实现秘密信息的盲提取。实验表明,该方法在保持良好的视频质量的前提下,可以满足隐蔽通信对于高嵌入容量的需求。In order to reduce the modification rate of cover media which is caused by embedding process, a new video steganography scheme based on motion vectors and linear block codes was proposed in this paper. The method embedded secret messages in the motion vectors of cover media during the process of H.264 compressing. Linear block codes were used to increase the utilization rate and reduce the modification rate of the motion vectors. The proposed steganographic scheme not only has lower computational complexity, but also is highly imperceptible to human being. Furthermore, the secret information can be extracted directly without using the original video sequences. Experiments were designed to prove the feasibility of the proposed method. The experimental results show that the proposed scheme can embed large amounts of information and can maintain good video quality as well.

关 键 词：视频隐写 运动矢量 线性分组码 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]