Video Watermarking And Its Application In High-definition Digital Television

With rapid development of the information age, the digital technology has been widelyused,.and thus digital images, video, etc. become readily available for people. Digital videobecause of its unique digital features become easier to spread. Along with the construction of thenext generation of broadcast networks, high-definition video is gradually replacing ordinary playa major source of high-definition video broadcast television systems, and the previous videowatermark image is almost ecolced from watermark.not adequately combined with compression,there are many shortcomings in the application of high-definition video, together with a largeamount of its own high-definition video data and high-definition study for high-definition videowatermarking algorithm has some significance and application of significance.In recent years, television has undergone a tremendous change in the system, from theoriginal analog TV to receiving the transition of the set-top box, and now appears IPTV,integrated machine, and so on, it has been changed to use TV more than watch it. The traditionalCA system can not meet the requirements of the existing system, the protection ofhigh-definition programming introduces DRM copyright protection and other protectivemechanisms, but there are still many problems: CA conditional access scrambling through theprogram is encrypted, but the program once it receives can no longer be protected, unauthorizedusers can copy arbitrary distribution of video; television in an open network, any user can uploadtheir own video distribution, etc., and how to effectively monitor all kinds of malicious behaviorof users, can not be achieved in accordance with the traditional monitoring system; copyrightprotection to be added in the same video data in different information, mutual interferencebetween information and increase program stream, to transfer the program playback difficult.1. Detailed study of the theoretical knowledge H.264compression, encoding algorithm coretechnologies, including predictive models, transform and quantization.2. Articles are to research and application of theory in the field of video watermarking as astarting point, and video watermark algorithm is studied traits, focusing on classic videowatermarking algorithm analysis. Were studied following classical algorithm: the original videowatermarking algorithm based; watermarking algorithm based compression; based compressedvideo watermarking algorithm. H.264watermarking algorithm focuses on the combination ofseveral embedded summarized way, a detailed analysis of watermarking algorithm based onDCT coefficients and watermarking algorithm based on motion vector.3. In-depth study of the basic principles of video watermarking premise, in-depth study ofthe characteristics and feasibility of various applications and high-definition video algorithms.Summarize and analyze the core idea of three different algorithms, embedded in the extractionprocess and the similarities and differences between them, and around a DCT algorithm in-depthstudy. By improving the classical DCT algorithm, from reducing the amount of embedded and made full use of both visual masking effect of a watermarking scheme to meet the requirementsof high-definition video watermarking scheme.4. Propose a watermarking scheme can be applied to hybrid dual high-definition digital TVsystem. Learn the definition digital television system conditional access systems and DRMsystems of key technologies to meet system needs, propose a hybrid watermarking scheme,namely embedded watermark for copyright authentication DCT coefficients and motion vectorsgenerated in the encoding process on and the fingerprint watermark, the watermark embeddingprocess in detail, the extraction process, etc.