水印

During the development of watermarking techniques, multimedia authentication and copyright protection act as the two most important application drives.

在数字水印技术快速发展的过程中，内容认证和版权保护应用扮演了两个最主要的驱动力。

Multi-functional digital watermarking technology based on RS error correction code and singular value decomposition .

基于RS 纠错码和奇异值分解的多功能数字水印技术。

Starting from discrete cosine transformation, this paper presents a new way to embed digital watermark in images.

从离散余弦变换出发，提出了一种图象中植入数字水印的方法此。

A digital watermarking algorithm is proposed based on Discrete Cosine Transform and Arnold transform.

提出一种基于离散余弦变换和Arnold变换的数字水印算法。

Finally, simulation experiments of two algorithms are carried out, results demonstrate that the watermark is invisible and robust against some attacks, such as crop, common noise and JPEG compress. It also has certain counteractant ability against a comprehensive attack.

仿真结果表明，实现的水印具有不可见性，而且对于常见的噪声、剪切、JPEG压缩具有较强鲁棒性，对于综合性攻击也具有一定的抵抗能力。

Compared with the original method based on affine covariant regions, this new approach evidently improves the performance in terms of robustness.

与基于仿射协变区域的水印算法相比，新算法的鲁棒性得到了显著提高。

Based on the research in the representative attacking ways ,we analyse the attacking classifications presented by Craver、Hartung、Voloshynovskiy、Boris、Cox and ect.

在对这些典型攻击方法研究的基础上，分析Craver、Hartung、Voloshynovskiy、Boris和Cox等学者的攻击分类，结合隐蔽分析等新的攻击方法，提出了一种新的数字水印攻击分类。

Digital watermarking has been proposed as an effective solution to the protection of multimedia data.

数字水印已经被公认为是解决多媒体数据保护的有效手段。

Digital watermarking is an effective technology and solution to digital product copyright protection and data security.

数字水印是一种有效的数字产品版权保护和数据安全维护技术。

In this paper, propose a digitalwatermarking algorithm based on Singular Value Decomposition.

在本文中，采用了基于奇异值分解的数字水印算法。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。