基于运动偏移的大容量H.264视频隐写算法

High Capacity H.264 Video Steganography Algorithm Based on Motion Offset

在运动矢量的基础上引入运动偏移的概念,提出基于运动偏移的大容量H.264压缩域视频流隐写算法。运动偏移同时包含运动幅度和相角,在寻找信息隐藏最佳点时,不会遗漏运动幅值或相角较大的运动矢量。实验结果表明,与同类隐写算法相比,该算法可找到更多隐藏位置,具有较大的隐藏容量和较好的隐蔽性。

H.264 video includes a great deal of motion vector information.This paper mentions concept of motion offset based on motion vector,and a novel steganography scheme on motion vector of H.264 video is proposed.When searching for hiding place,motion offset connects both movement and phase angle.Compared with other algorithms in the motion vector,the algorithm locates more hiding place.Experimental results show that the algorithm has large capacity and well fidelity.