Digital Video Watermarking And An Object-based MPEG-4 Watermarking Algorithm

With the development of multimedia and Internet technology, there are more and more digital products for our entertainment and it can be easily copied and delivered on Internet without any loss in quality. So more and more pirates strongly hurt the producer and author's interests. An effective method is required to protect the digital products. Digital watermarking is such an effective method and it attracts many researchers, especially digital video watermarking. In recent years there are many digital watermarking techniques for popular video compression standards.In the paper some images and video watermarking techniques are introduced, including their development and general method to research. It also covered with wavelet for it's role in JPEG2000 and MPEG-4 and it's application in watermarking with its multiresolution property. Comparison and analysis of image and video' watermarking is made based on the difference between images and video. When the digital streaming video is transmitted on Internet, it will be affected by the network, such as bandwidth, so the paper also deals with streaming video watermarking and its exclusive requirement. At the last chapter, an object-based watermarking algorithm has been presented.The watermarking algorithm for MPEG-4 compression is devoted to address the influence from the rate scalability, based on static texture object in MPEG-4 and watermarking in wavelet domain. The possibilities and advantages that an object-based watermarking combined with watermarking agent techniques are pointed out.