视频数字水印技术综述

视频数字水印是保护视频版权的一种有效技术手段．在研究国内外视频数字水印研究现状的基础上，对当前视频水印技术的特点、它的分类、攻击手段、视频水印的嵌入和提取算法做了综述，指出了各种算法的优缺点，给出了视频数字水印嵌入和提取算法有代表性的实例．最后归纳了视频水印的关键技术，并指出了视频水印今后研究的发展趋势．

The Digital Watermarking Technique for Video: A Survey

The digital watermarking for video is an effective method to protect the video copyright. Based on the previous video watermarking techniques, this paper summarizes their features, classification, attacks being incurred, embedding and extracting/detecting algorithms. The watermark information can be embedded into the video in spatial or frequency domain, or into the compressed video bit-stream directly. And the watermarked video will suffer from some novel attacks that are different from those on image watermarking. Also in this paper, the merits and defects of each algorithm, including robustness, safety, certainty and reliability, are analyzed, and several typical algorithms for embedding and extracting watermark are introduced as examples. In the last section, the key techniques and the development tendency of the video watermarking are discussed.