Considering digital watermarking algorithms for document images, there are not many, lower robustness.
目前针对文档图像的数字水印算法并不是很多，并且都有鲁棒性较低的缺点。
Research on digital watermarking algorithms for the 3d mesh model in the spatial domain and 3d shape model defined as a point set is made.
本论文分析了三维几何模型数字水印的基本原理和方法，研究了空域中的三维网格水印算法和三维点集模型的水印算法。
But more research of the digital watermarking focus on algorithms and theoretical basis, while ignoring the design of watermark application protocol and implementation.
但是目前对于数字水印的研究多集中在算法和理论基础方面，而忽视了水印的应用协议和实施标准设计和制定。
Still image digital watermarking and information embedding algorithms are studied in this thesis.
本文研究了静态图像的数字水印和信息嵌入问题。
A new method that digital watermarking information was embedded in numerical attributes Least Significant Bit (LSB) was put forward in view of the existing watermark algorithms insufficiency.
针对现有水印算法的不足，提出了在数值型属性最低有效位(LSB)嵌入水印信息的一种新方法。
Digital watermarking is a new technique for digital multimedia copyright protection, the differences of the algorithms make the robustness and the imperceptibility of this technique very different.
数字水印是近年来出现的一种新的数字多媒体产品版权保护技术，用于嵌入水印的算法的不同使得该技术的不可见性，鲁棒性等特性大相径庭。
The third method is effective integrate the former two algorithms, which proposed dual watermarking algorithm for digital image authentication.
第三种算法是将前两种空域和变换域算法进行有效融合，从而提出了双重多功能性水印数字图像认证算法。
After studying and analyzing the disadvantages of the previous algorithms in digital watermarking, we focus our work on the researching and implementation of the combining watermarking technology.
在学习和分析了已有的水印算法后，我们将重点放在研究复合水印嵌入技术的实现上。
The two embedded algorithms of digital watermarking are proposed in this paper.
提出了两种数字水印嵌入算法。
According to the digital image watermarking technology, two embedding algorithms based on DWT and corresponsive distilling algorithms are studied.
针对数字图像水印技术，比较系统地研究了基于DWT域的两种数字图像水印嵌入算法及对应的提取算法。
This thesis mainly studies adaptive digital image watermarking algorithms based on human visual system (HVS).
本文主要研究基于人眼视觉特性的自适应图像水印算法。
In view of the unique characteristics of document images, many algorithms for digital image watermarking can not be applicable for document images.
而且鉴于文档图像自身的特点，许多数字图像水印算法对文档图像并不适用。
In view of the unique characteristics of document images, many algorithms for digital image watermarking can not be applicable for document images.
而且鉴于文档图像自身的特点，许多数字图像水印算法对文档图像并不适用。
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