A Video Watermarking Scheme Based on Motion Vectors
Guidong Zhang · Acta Scientiarum Naturalium Universitatis Sunyatseni · 2004
An improved video watermarking scheme employing motion vectors is proposed. Compared with similar schemes proposed by Jordan, ZHANG and Dai, respectively, the new one described herein has three merits: (① Embedding )strategy is adaptively adopted according to the requirement of watermarking capacity to meet the need of imperceptibility; ② The accumulation of differential coding error of motion vectors is reduced;③ Compatible with the syntax of MPEG_2 coding stream. Experimental results have demonstrated that the proposed scheme is of low computational complexity and of high robustness against rate conversion.