【摘要】 随着计算机和网络技术的飞速发展 ,数字图像、音频和视频产品越来越需要一种有效的版权保护方法 ,数字水印技术为上述问题提供了一个潜在的解决方案。提出了数字水印技术的基本要求与框架 ,介绍了数字水印技术与水印攻击方式的研究现状 ,讨论了其种种应用 ,展望了数字水印下一步的发展方向 ,对多媒体水印技术的研究有着重要的指导意义更多还原

【Abstract】 The advent of internet and the wide availability of computers, scanners and printers make digital data acquisition, exchange and transmission a simple task. Digital watermarking techniques have been proposed as a solution to the problem of copyright protection of multimedia documents. This paper presents the fundamental demands and general watermarking framework, reviews rarious digital watermarking schemes and attacks, discusses the applications of these schemes and, proposes the development directions of digital watermarking techniques.更多还原