Digital watermarking technology has a wide range of applications in video distribution and copyright protection due to its excellent invisibility and convenient traceability. This paper proposes a robust blind watermarking algorithm using adaptive region selection and channel reference. By designing a combinatorial selection algorithm using texture information and feature points, the method realizes automatically selecting stable blocks which can avoid being destroyed during video encoding and complex attacks. In addition, considering human's insensitivity to some specific color components, a channel-referenced watermark embedding method is designed for less impact on video quality. Moreover, compared with other methods' embedding watermark only at low frequencies, our method tends to modify low-frequency coefficients close to mid frequencies, further ensuring stable retention of the watermark information in the video encoding process. Experimental results show that the proposed method achieves excellent video quality and high robustness against geometric attacks, compression, transcoding and camcorder recordings attacks.
翻译:数字水标记技术在视频传播和版权保护方面有着广泛的应用,原因是其极好的隐蔽性和方便的可追踪性。本文件建议采用适应性区域选择和频道参考法,采用稳健的盲点水标记算法。通过使用纹理信息和特征点设计组合选择算法,该方法实现了自动选择稳定的区块,这些区块可以避免在视频编码和复杂攻击过程中被摧毁。此外,考虑到人类对某些特定颜色组成部分的不敏感,因此,频道参考水标记嵌入方法的设计对视频质量的影响较小。此外,与其他方法相比,与其他方法相比,我们的方法倾向于在低频率嵌入水标记,我们的方法倾向于修改接近中频率的低频率系数,进一步确保在视频编码过程中稳定保留水标记信息。实验结果表明,拟议方法在几何攻击、压缩、转换和摄像系统录音袭击方面实现了优秀的视频质量和高度稳健性。