一种新的DWT视频动态水印算法

New DWT dynamic video watermarking algorithm

提出了一种新的基于DWT的视频水印算法,选取视频的奇偶帧进行分帧,利用奇偶帧的二次DWT分解后的低频分量完成动态水印帧的嵌入,提取时通过选择取整系数扩大水印信息的选取范围恢复水印。仿真结果表明,该算法能使嵌入后的视频在抵抗有损压缩、滤波等攻击的同时很好地恢复出动态水印,在维持视频的稳健性的同时提高了视频的隐蔽性。

A new of video dynamic watermarking algorithm based on DWT was proposed,parity frame of the video was separated from the video,the low frequency component after the decomposition of the secondary DWT of the parity frame was used to complete dynamic embedded watermarking frame,watermarking was recoveried by selecting integer coefficients to expand the selection of the watermarking information.Simulation results show that the algorithm can recover the watermarking better from embedded vodeo under resisting the attack of lossy compression and filtering.The concealment of the video is enhanced while the video robustness is maintained.