A Wavelet Transform Based Adaptive Video Watermarking Algorithm Research

The digital media has become a more fast and convenient way for information communication along with the popularization of Internet and the development of multimedia technique. But at the same time, this also leads to serious problem regarding IPR protection. As an effective method to provide copyright protection for digital media, digital watermarking technology has drawn extensive attention in recent years. For this paper, some important topics about digital watermarking are discussed, which include not only the backgound and principles of watermarking but also some classic algorithms. Apart from that, we propose an adaptive video watermarking based on three-dimensional wavelet transformation. In order to realize adaptability, the algorithm splits the original frames into 3D-blocks and lines up these blocks according to HVS characteristics. Watermark information with different strength is inserted into these blocks based on the particular order. The experimental results demonstrate that the watermarks are invisible and robust against MPEG compression and some commonly used attacks.