论文标题
可用于视频伪造检测的强大水印，并提高了不可识别性和鲁棒性
Robust Watermarking for Video Forgery Detection with Improved Imperceptibility and Robustness
论文作者
论文摘要
视频容易篡改攻击，以改变含义并欺骗观众。以前的视频伪造检测方案找到了很小的线索来定位篡改区域。但是，攻击者可以使用视频压缩或模糊破坏此类线索来成功逃避监督。本文提出了一个视频水印网络，用于篡改本地化。我们共同训练一个基于3D-UNET的水印嵌入网络和一个预测篡改面罩的解码器。水印嵌入产生的扰动几乎是无法察觉的。考虑到没有现成的可区分的视频编解码器模拟器，我们建议通过结合其他典型攻击的模拟结果来模仿视频压缩，例如JPEG压缩和模糊，作为近似值。实验结果表明，我们的方法生成具有良好无知性的水印视频，并且在攻击版本中可稳固，准确地定位篡改区域。
Videos are prone to tampering attacks that alter the meaning and deceive the audience. Previous video forgery detection schemes find tiny clues to locate the tampered areas. However, attackers can successfully evade supervision by destroying such clues using video compression or blurring. This paper proposes a video watermarking network for tampering localization. We jointly train a 3D-UNet-based watermark embedding network and a decoder that predicts the tampering mask. The perturbation made by watermark embedding is close to imperceptible. Considering that there is no off-the-shelf differentiable video codec simulator, we propose to mimic video compression by ensembling simulation results of other typical attacks, e.g., JPEG compression and blurring, as an approximation. Experimental results demonstrate that our method generates watermarked videos with good imperceptibility and robustly and accurately locates tampered areas within the attacked version.
