查询词典 watermark

An Integer Wavelet Transform with parameters is firstly constructed and the transmutative Rijndael code is used to construct a Hash function, and then a visible digital watermark algorithm based on the Integer Wavelet Translation with parameters, Discrete Cosine Transform and the Transmutative Rijndael encryption algorithm are presented.

构造出了带参数的整数小波，应用变型的Rijndael密码构造出了Hash函数。提出了一种基于带参数整数小波变换、离散余弦变换及变型Rijndael加密算法的可见数字水印算法。

Experiment results show that the algorithm has good performance on safety, transparence and robustness of watermark .

实验结果表明，该算法具有良好的安全性、透明性和鲁棒性。

Firstly, to ensure the security of wartermark,the wartermark image is Arnold scrambled before embedding and expanded to the twifold size of the original image.The corresponding subband data of the watermark and the red,green,blue weight for original image are combined according to the characteristic of the multiresolution decomposition of the wavelet transform.

首先，为保证水印的安全性，在嵌入之前先对水印图像作Arnold置乱处理，再将水印图像位扩展为原始图像的两倍大小；然后根据小波变换的多分辨率分解特性，将位扩展水印和原始彩色图像红色、绿色、蓝色分量对应方向上的子带系数进行组合。

The articale makes a brief introduction of the applying background to the technology, as well as its basic characteristics. it also analyses the present typic watermark inset-algorithm and checking means, further tells some key technologies in practical application, points out a wide prospect digital video watermarking technology will certainly have.

在简要介绍数字视频水印技术的应用背景和基本特点的基础上，分析了目前常用的水印嵌入算法和检测手段，并指出了实际应用中应注意的一些关键技术，指出数字视频水印技术必将有一个广阔的发展前景。

In this paper an efficient approach via wavelet for digital watermark in DEM data is developed, which effectly protects the copyright of DEM data and avoids the unauthoritative user.

提出了一种高效、安全的数字高程模型(digital elevation mode，简称DEM)数据小波水印算法，以解决DEM数据版权保护和限制非法使用的问题。

The following question of multi-scheme and multi-watermark is mutual conflicts between district watermarkings. How to deal with the conflicts, and to analyze and stretch the capacity of the multiply data hiding technologies is the unignored problem for the research on copyright protection of MPEG-4 Audio.

多水印的应用必然会存在相互之间的矛盾冲突以及对传统的单水印模式的冲击，如何利用网络信息论、通讯理论等建立合理的多水印模型来控制相互之间的矛盾冲突、优化水印嵌入和检测算法是MPEG-4音频版权保护不容忽视的关键问题。

From another point of view, at first we discussed a lot of what is the real word-of-mouth marketing, I have a renminbi,"watermark" for everyone to identify if a word-of-mouth marketing is the content of the debris was to center , Then it can certainly be considered a real word-of-mouth marketing, otherwise, that is not.

从另一个角度来说，大家起先讨论了很多什么叫真正的口碑营销，那我这里有一个人民币的&水印&可以供大家来鉴别，如果一个口碑营销的内容是呈碎片化的，去中心化的，那它一定可以被考虑是一个真正的口碑营销，否则，即不是。

This is a very useful tool to watermark images in batches and with good set of features, it is totally worth.

这是一个非常有用的工具，分批水印图像具有良好的功能集，这是完全值得。

Besides, extending the concept of Label-codeword and using the K-means clustering algorithm in the field of data mining for reference, we propose the algorithm of Classified Labeled Bisecting K-means clustering, based on which a robust watermark can be embedded effectively and extracted blindly.

通过扩展码字标记码书这一概念，并借鉴数据挖掘中的K-均值聚类算法，提出了分类标记K-均值聚类的概念。利用这一概念，实现了鲁棒水印的高效嵌入和盲提取。

A digital watermark embeds an imperceptible signal into data such as audio,video and images,for different purposes,including captioning and copyright control.

0引言当前，计算机的普及使得很多文学或艺术作者直接将作品以数字方式记录和存储下来，而网络的飞速发展也为数字作品的传输提供了便利。

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。