Efficient Video Watermarking Using Motion Estimation Approach

Digital watermarking is a helpful technology for providing copyright protection for valuable multimedia data. In particular, video watermarking deals with several issues that are unique to various types of media watermarking. In this paper a method for embedding additive digital watermarks into uncompressed and compressed video sequences is presented in a spatial domain. The proposed method is adopted to exploit only the motion regions between frames using motion estimation technique. The method is tested on different types of video (compressed DVD quality movie and uncompressed digital camera movie). The experimental results show that the quality of watermarked video (PSNR) seems to be reasonable (watermark invisibility) when the value of scale factor is taken a = 0.05. This scheme supposes to be robust against the attack of frame dropping, averaging, statistical analysis and lossy compression.