The research works of this article mainly include several aspects as follows : 1 . wavelet analysis theories is researched , which include the first and the second generations of wavelet transformation , the basic concept , principle and algorithm , especially the multi - resolution of wavelet and the lifting scheme theory of the second - generation wavelet . the research contents about digital watermark are introduced systematically , and the general principle and universal model are summarized and the primary applied prospect is also pointed out 本文的研究工作主要包括以下几个方面: 1 .研究了小波分析理论,包括第一代和第二代小波变换的基本概念,原理,算法,特别是小波的多分辨分析和第二代小波的提升框架理论;系统地介绍了数字水印研究内容,总结了它的一般原理及通用模型,并指出了其主要应用前景,分析了数字水印的各种典型算法、以及主要的攻击方式。
