摘 要.... 2

 

 

第二章、数字水印的一般原理和现有算法……………………………………..9

 

 

第四章、图象数字水印技术的设计与实现.... 16

 

第五章、音频信号数字水印技术的设计与实现.... 18

 

第五章、总结.... 23

 

参考文献.... 24

 

 

信息隐藏是一门新兴学科，是各国研究者所关注和研究的热点。其原理是利用载体中存在的冗余信息来隐藏秘密对象，以实现保密通信或者实现数字签名和认证。数字水印技术是信息隐藏的一个重要分支,其应用广泛,发展前景广阔。

本论文对视频，图象以及音频的数字水印方法进行了研究。首先其进行一些分析处理，然后分别给出相应的算法和流程，参照实验结果讨论了应该注意和改进的地方，最后根据实际需要阐述了各自的用途作用。实验结果表明，好的数字水印的算法方法简单有效，能对抗被动攻击，并能够实现无损恢复。

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Information-Hiding is a new discipline and receives very much attention from the research community. It is to embed private messages in seemingly innocuous cover messages making use of the redundancy information. Steganography is an important part of information-hiding, and time domain techniques are simple and easy to use.

This paper presents a way to study the vidio and picture . Firstly, the paper introduces some pretreatment methods to the hiding image including confusion transformation and fault control encoding. Secondly, it gives out the algorithm and experiment flow of the method. In the end of the paper we further research the position of the data to be embedded and discuss a transform domain technique to conquer compression attack. The results indicate that the method is simple and effective. With the method we can not only withstand passive attacks but can also get back the data without loss.