Bi-watermark Algorithm Based on H.264/AVC Video Stream
Yimin Yang · Jisuanji gongcheng · 2009
Aiming at new features of the H.264/AVC video coding standard,a bi-watermark algorithm for H.264/AVC low bit-rate video stream is proposed.By embedding the robust watermark into DCT domain and fragile watermark into prediction error motion vectors respectively,the method can jointly achieve both copyright protection and authentication.Experimental results demonstrate that the video watermark scheme can achieve high robustness and good visual quality without increasing the overall bit-rate.The robust watermark can robustly survive some attacks such as Gaussian-noise,low-pass filter,re-encoder and rotation and so on,and the fragile watermark is sensitive to various attacks.