论文标题
基于DTCWT-SVD的视频水印对帧速率转换的抗性
A DTCWT-SVD Based Video Watermarking resistant to frame rate conversion
论文作者
论文摘要
视频很容易被攻击者篡改,复制和重新分发,以供非法和货币使用。这种行为严重危害了内容所有者的兴趣。尽管在数字视频水印中为版权保护做出了巨大的努力,但视频传输中的典型扭曲,包括信号攻击,几何攻击和时间同步攻击仍然可以轻松消除嵌入式信号。其中,包括框架掉落,框架插入和帧速率转换在内的时间同步攻击是最普遍的攻击之一。为了解决这个问题,我们提出了一个基于联合双树余弦小波转换(DTCWT)和单数值分解(SVD)的新视频水印,该视频对帧速率转换具有抗性。我们首先通过在DTCWT变换后应用SVD分解来提取一组候选系数。然后,我们通过调整候选系数的形状来模拟水印嵌入。最后,我们执行组水平的水印,其中包括适度的时间冗余,以抵抗时间差异性攻击。广泛的实验结果表明,所提出的方案对时间的非同步攻击更具弹性,并且比现有的盲目视频水印方案更好。
Videos can be easily tampered, copied and redistributed by attackers for illegal and monetary usage. Such behaviors severely jeopardize the interest of content owners. Despite huge efforts made in digital video watermarking for copyright protection, typical distortions in video transmission including signal attacks, geometric attacks and temporal synchronization attacks can still easily erase the embedded signal. Among them, temporal synchronization attacks which include frame dropping, frame insertion and frame rate conversion is one of the most prevalent attacks. To address this issue, we present a new video watermarking based on joint Dual-Tree Cosine Wavelet Transformation (DTCWT) and Singular Value Decomposition (SVD), which is resistant to frame rate conversion. We first extract a set of candidate coefficient by applying SVD decomposition after DTCWT transform. Then, we simulate the watermark embedding by adjusting the shape of candidate coefficient. Finally, we perform group-level watermarking that includes moderate temporal redundancy to resist temporal desynchronization attacks. Extensive experimental results show that the proposed scheme is more resilient to temporal desynchronization attacks and performs better than the existing blind video watermarking schemes.