A novel watermarking scheme with compensation in bit-stream domain for H.264/AVC

Currently, most of the watermarking algorithms for H.264/AVC video coding standard are encoder-based due to their high perceptual quality. However, for the compressed video, they increase the computational burden to decode the video, embed the watermark, and then re-encode it. Obviously it is a bottleneck for real-time applications. Conventional watermarking algorithms in the bit-stream domain can reduce the computation complexity but result in the error propagation and PSNR loss. In this paper, a new fast watermarking scheme with compensation in bit-stream compressed video domain is proposed, in which the watermark is directly embedded into the quantized residual coefficients. A texture-based perceptual model is employed to decide whether a 4x4-block is appropriate for watermarking or not. A secret key is used to decide the actual location to be embedded in a 4x4-block. With the proposed compensation method, the video watermarking scheme can achieve high robustness and good visual qu...

• Type: Conference
• Year: 2010
• Where: ICASSP
• Authors: Liwei Zhang, Yuesheng Zhu, Lai-Man Po
• Keywords: Conventional Watermarking Algorithms, ICASSP 2010, Signal Processing, Video, Watermarking Algorithms