水印

The robustness of watermark is vital to the practical application , which requires the watermark providing with significant data since it suffered from some intended attacks or unintended revisal

水印算法的鲁棒性对于实际应用来说是至关重要的，它要求数字水印在遭受有意的攻击或无意的修改后，仍能提供有意义的数据，这一性能对版权保护的应用显得尤为突出。

Digital watermarks that technology produce in recent years to acknowledge generally, At its enormous commercial value, so it just productions, receive international scientific and technological circle and the great attentions of business circles, And has nowadays become one in information science and computer science novel and unique and has wide research focus question of using the prospect quickly.

图像数字水印方法是以图像为载体，通过某种图像处理方法将水印信息嵌入到原始图像中，在尽量不影响图像视觉质量的前提下，实现对图像所有权和版权的保护功能，目起那已经成为了广大科研人员研究的主要方向和重点。

This paper presents an audio watermarking algorithm based on Shamir secret sharing scheme and zero-watermark's technology.

提出一种基于Shamir秘密共享方案和零水印技术的数字水印算法。

In this paper,we present an improved digital image watermarking method of singular value based on matrix multiplication of strassen and comparability measurement between original image and watermarking image;the new method is compared to the methods based on SVD and Block-SVD.

在基于奇异值分解算法的基础上，提出了一种基于Strassen矩阵乘法的奇异值分解水印算法；提供了原图像和水印图像的相似性度量方法；给出了本算法与SVD及Block-SVD算法的时间对比分析。

Last, this paper introduced some concepts of multiscale geometrical analysis and curvelet transform theory. Because curvelet can showed this feature more 'sparsely' in the function included singular curve or singular side in two dimension space or multi-dimension space. This paper provided a robust digital watermarking technology algorithm based on curvelet transform. watermarking information was embedded into coarse scale coefficients after curvelet transforming, choose right embedding strength. Testing proved it has good invisibility and robustness.

最后，介绍了多尺度几何分析和曲波变换理论的相关概念，鉴于曲波能对二维乃至高维空间中含奇异曲线或者曲面的函数进行更"稀疏"地表示这一特性，本章提出了一种基于Curvelet变换的鲁棒数字图像水印算法，该算法将水印信息嵌入到经曲波变换后的图像的粗尺度系数中，合理选择的嵌入强度，试验表明该算法具有较好的隐蔽性和鲁棒性。

According to 0/1 watermarking sequence and the synonymy substitution evaluation model, the watermark is selectively embedded in the original text.

根据0/1水印序列和同义词替换评价模型，将水印有选择地嵌入到原始文本中。

Applied DWT to R,G,B channel correspondingly, and used three low frequent coefficients to construct a 3-level tensor. Embedding the watermark into the core tensor, which got form Tucker decomposition, could diffuse the watermark into R,G,B.

首先对彩色图像R、G、B三通道进行小波变换，然后将获得的三个低频系数构成三阶张量，再经过Tucker分解后获得核心张量，通过在核心张量中嵌入水印信息使得水印信息扩散到原彩色图像的R、G、B三个分量中。

In this paper, the concept of multimedia digital watermark is introduced. The present state of this technology is summarized. The hypothesis test procedures of two different algorithms using DCT are analysed, and threshold choice problem is discussed. Computer simulation is done to confirm the conclusions made.

本文介绍了多媒体数字水印的概念，对当前的技术现状进行了简单的综述，重点研究了两种DCT 域上的数字水印算法的检测过程，在此基础上对两者的性能和特点进行了分析，并且进行了实验仿真验证。

Analyze of digital image watermarking with rotation, scale and translation invariant.

对抵抗几何攻击的数字水印算法进行分析，介绍了几种对RST鲁棒的水印算法的思路。

At the same time, the watermark is embedded into the image under consideration of security and localization.

同时，为了提高水印的安全性和篡改的局部检测性，本文给出了该框架下水印嵌入方法的基本要求。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。