基于回归预测的运动矢量可逆信息隐藏  

Reversible data hiding in motion vector based on regression prediction

作　　者：宁志强 潘峰[1,2] 钮可[1,2] 陈培[1] NING Zhi-qiang;PAN Feng;NIU Ke;CHEN Pei(College of Cryptographic Engineering,Engineering University of PAP,Xi̓an 710086,Shaanxi,China;Key Laboratory of Network and Information Security of the PAP,Xi̓an 710086,Shaanxi,China)

机构地区：[1]武警工程大学密码工程学院,陕西西安710086 [2]网络与信息安全武警部队重点实验室,陕西西安710086

出　　处：《山东大学学报（理学版）》2022年第5期66-73,共8页Journal of Shandong University(Natural Science)

摘　　要：针对现有基于运动矢量的视频信息隐藏算法影响解码后的视频质量和比特率增长过大的问题,提出一种基于回归预测的运动矢量可逆信息隐藏算法。算法通过对预测运动矢量与真实运动矢量的差值进行微调,在差值的最小位嵌入秘密信息,实现了解码端运动矢量的无损恢复。与以往基于运动矢量的信息隐藏算法相比,在保证良好视频质量和较稳定的嵌入容量的同时,比特率扩张平均降低了28.77%。Aiming at the problem that the existing video data hiding algorithm based on motion vector affects the visual quality after video decoding and the bit rate increases too much, a reversible data hiding algorithm based on motion vector is proposed. The algorithm fine-tunes the difference between the predicted motion vector and the real motion vector, and embeds secret data in the lowest bit of the difference to realize the lossless recovery of the motion vector at the decoding end. Compared with the previous data hiding algorithms based on motion vectors, while ensuring good video quality and stable embedding capacity, the bit rate expansion is reduced by an average of 28.77%.

关 键 词：信息隐藏 运动矢量 H.264 多元线性回归 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]