Robust H.264/AVC Video Watermarking Without Intra Distortion Drift

摘要

A robust H.264/AVC video watermarking algorithm without intra distortion drift is proposed in this paper for the copyright protection of digital videos. The classic distortion drift-free method limits the size of watermark image because of limited capacity. The improved intra distortion drift free method proposed in this paper enlarges the capacity and promote the visual quality with a reasonable classification according to intra prediction modes of H.264. Embedding pretreated watermarks into middle-frequency coefficient-pairs of 4 × 4 luminance blocks, which makes the scheme achieve robustness. Experimental results show that our algorithm achieve high robustness and good visual quality without huge bit-rate increasing. The capacity of proposed scheme is doubled than the classic scheme as well.