  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.
