数字水印稳健性攻击及相应策略

数字技术的飞速发展使得多媒体的交流达到了前所未有的深度和广度。数字媒体的诸多优点带来便利的同时也使作品侵权更加容易。数字水印是近几年发展起来的保护知识产权的有效方案。它的特点有隐形性、安全性和稳健性等等。水印在实际应用中必然会受到各种攻击，稳健性是其生存能力的体现。因此如何提高稳健性是水印算法的一个重要方面。该文论述了数字水印常见的几种攻击的原理和操作，并给出了相应的抵抗策略。最后提出了数字水印稳健性的研究方向。

Attacks on Robustness of Digital Watermarking and the Responding Remedies

The rapid development of digital technique makes the communication of multimedia reach the ever depth and extent. The advantage of digital media prov ides us convenience, in the mean time, it also makes the piracy easier. Digital watermarking developed recently is an effective scheme for solving the I ntelligence Property Right. Its character is of invisibility, security , robustn ess and etc. It is certain that watermarking will suffer all kind of attacks whe n applied in practice, robustness is the embodiment of the ability for survive. Therefore how to improve the robustness of watermarking algorithm is of importan ce. The principle and operation of several common attacks are discussed in this paper, and responding remedies are also proposed to expect the emergence of mo re robust algorithm. Finally, the research directions of robustness of digital w atermarking are put forward .