基于能量和方差的鲁棒自适应视频水印算法

A ROBUST ADAPTIVE VIDEO WATERMARKING ALGORITHM BASED ON ENERGY AND VARIANCE

为了提高水印的鲁棒性同时兼顾视频主观质量和水印不可见性，提出一种基于FZDH的自适应视频水印嵌入技术．该算法依据人类视觉掩蔽特性，计算帧中各块方差和能量值，按照两值大小自适应的选择水印嵌入范围和嵌入强度．通过采用高斯白噪声和椒盐噪声对H．264／AVC压缩编码后的水印视频进行攻击，比较本方案与原算法在抗噪声和抗压缩方面的能力．仿真实验表明，本方案比传统算法具有更强的抗压缩和抗噪声能力．

An adaptive data hiding method is proposed that encapsulates forbidden zone data hiding in order to improve the robustness of the watermark under the premise of ensuring the subjective quality of host video and the invisibility of the watermark. The algorithm based on human visual masking characteristics calculates each block~ variance and energy and then selects the range of forbidden zone and the embedding strength according to the two values. The proposed method is tested with H. 264/AVC compression and strong common signal processing attacks, such as Gaussian filtering, to compare with the original algorithm. The simulations indicate that the method is more robust against attacks such as noise and compression, and can be successfully utilized in video data hiding applications.