基于运动矢量排序的视频可逆信息隐藏

Video Reversible Data Hiding Based on Motion Vector Ordering

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的问题,提出一种基于运动矢量排序的可逆信息隐藏算法。该算法把运动矢量分为若干组,并将每组中的运动矢量按升序排列,在最大(小)值与次大(小)值的差值中嵌入秘密信息,实现了解码端运动矢量的无损恢复。实验结果表明,提出的方法具有良好的视觉质量。与同类型信息隐藏算法相比,该算法的峰值信噪比和结构相似性的变化值平均降低了59.36%和41.38%。

Aiming at the problem of visual quality after video decoding effected by the existing video data hiding algorithms based on motion vector,a reversible data hiding algorithm based on motion vector ordering was proposed.The algorithm divides the motion vectors into several groups,arranges the motion vectors in each group in ascending order,embeds secret data in the difference between the maximum(minimum)value and the second maximum(minimum)value,which realizes lossless recovery of motion vectors at the decoding end.Experimental results showed that the proposed algorithm had a good visual quality.Compared with the same type of data hiding algorithm,the change value of peak signal-to-noise ratio and structural similarity index of this algorithm was reduced by 59.36%and 41.38%on average.