Robust Video Watermarking Algorithm with Correlative Context
具备上下文依赖及鲁棒性的视频水印算法

Digital watermarking,a popular technique for content authentication and forgery prevention,is viewed as an enabling technology to protect distributed content from unauthorized reuse.Digital watermarks of ownership embedded onto digital content offer copyright protection,ownership assertion,integrity checks for digital content,and can pro- vide evidence of copyright infringement after an attack.Watermarking technologies have been envisioned as a potential means for establishing ownership on digital media objects.In this paper,a watermarking method that relies on in- formed coding and informed embedding is presented.We devise an efficient method,which uses a subset of various codewords to represent the 0 and 1 message bits to be embedded.We propose a codeword generation scheme that keeps control of the distance between codewords in order to secure fidelity and robustness of the watermark.When compared to existing video watermarking schemes,our method yields superior robustness to video compression.