水印

Then it would be embedded into the discrete cosine transform coefficients exception of direct current in digital image blocks.

该算法依赖于可信任第三方提供的时间戳以及用户的私钥和授权码生成双重水印信息，然后将其嵌入在图像分块除直流分量外的DCT系数上。

Digital watermark is a key research direction of information hiding technology.

数字水印是信息隐藏技术的一个重要研究方向。

This algorithm is based on two dimensional discrete Fourier transform (2DFT).

该水印算法基于二维离散傅立叶变换(2DFT)。

The main work of the dissertation is summarized as follows:First, a new method of digital watermarking scalable vector graphics based on discrete fractional fourier transform is proposed.

本文主要的工作归纳如下：首先，提出了基于离散分数傅立叶变换的SVG图形水印算法。

In this paper, a semi-fragile watermarking algorithm based on Human Visual System and Discrete Wavelet Transform is presented.

在系统分析了人类视觉系统的特性之后，本文提出了一种基于HVS和DWT的半脆弱水印算法。

The second one is a method based on Independent Component Analysis with reference signal. Unlike the former, this method can separate the estimating value of the watermark signal separately by using the information provided by the reference signal, so the computing complexity of the first method can be greatly decreased, at the same time, the shortcomings of the ICA based method, such as disorderliness and randomicity can be overcome.

第二种方法以带参考信号的独立分量分析算法为基础，通过参考信号提供的信息直接提取所需要的水印信号估计值，克服了ICA算法在分离各路源信号时所具有的无序性和任意性的缺点，降低了第一种方法的运算复杂度。

Disputation about copyright can be settled down by using the watermark embedding technique presented in this paper.

利用本文的水印技术可以较好地解决版权争议等问题。

Second, a robust digital watermark algorithm based on difference dither modulation is proposed.

其次，提出了一种基于差值抖动调制的鲁棒数字水印算法。

Once you are dome with the settings, you can start the watermarking.

一旦你圆顶的设定，您就可以开始水印。

In addition, an adaptive video watermarking algorithm for effective resistance to linear collusionwas proposed.

基于该规则，提出了一种有效抵抗线性共谋攻击的视频水印方案。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。