水印

By disordering randomly the position of pixels of the wateamarking image,encryption is achieved.

在该方案中，通过对水印像点的位置进行随机置乱，达到加密的目的。

A new method of watermarking disposing based on wavelet domain is presented.

提出了一种基于小波变换域的水印处理方法。

Firstly, this paper introduces the development and some related concepts of digital watermarking, which elucidates the background and significance of the research.

首先，本文介绍了数字水印问题的提出及其相关概念，阐述了本课题的研究背景和意义。

Digital watermarking technique, which embeds special information into digital products, is a new method for copyright protection.

数字水印技术将特定信息嵌入数字产品中，是一种新型的版权保护机制。

Digital watermarking technology, which embeds additional information into original digital data, is one of the most effective methods to verify the ownership and authenticity of information.

数字水印技术提供了解决这一问题的有效方法，已成为多媒体信息安全领域的一个研究热点，受到越来越多的关注。

By elaborating on the principle, classification and application areas of digital watermark technologies, this paper is aimed to provide readers with a full understanding of the entirely new enciphering technologies.

通过对数字水印技术的原理、分类和应用领域等内容的阐述，使读者能够较全面地了解这种全新加密技术。

Experimental results show that inverting the effect of the attack helps to reduce the decoding error.

实验结果表明估计并校正此类攻击可以显著地降低水印解码错误率。

In order to protect e-products from the increasing appearance of pirates,spite attacks and illeagal juggles, digital video watermarking technology emerges as the times require.

为防止越来越多的电子信息产品的盗版、恶意攻击和非法篡改问题，数字视频水印技术应运而生。

Experimental results show that the method given in this paper is more robust than previous similar method.

实验证明本文和别人提出的类似的水印算法相比有更好的鲁棒性。

The algorithms above are implemented. Some analyses compared with Paul et al. [6] are drawn out. Experimental results indicate that the present algorithms are robust against JPEG compressing but extremely sensitive to other malicious manipulation such as filtering and random noising.

本文实现了上述的数字水印算法，并与文献[6]进行比较，实验结果表明本文所提出的算法对JPEG压缩具有很好的鲁棒性，但对其他攻击如滤波和加噪等是比较敏感的。

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。