digital watermark

Resemble with the digital watermark methods of the other media such as still image and video, digital audio watermark must account for some problems which consist of perceptual transparency, data bit rate, robustness, security and real-time etc.

与静态图像、视频等数字水印方法类似，音频水印的研究主要须解决感知透明性、数据嵌入率、鲁棒性、安全性以及实时性等问题。

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Only those who have decryption key can extract the watermark correctly, that increased the difficulty of illegal tampering the watermark information. Afterwards, this thesis studies the theory of electronic seal and designs a electronic seal system based on the digital watermark.

只有持有解密密钥的人才可以正确提取水印，提高了非法篡改水印信息的难度，保证了水印信息的安全性。研究电子印章的设计原理，并设计了一套基于数字水印技术的电子印章系统方案。

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Considering the requirement of watermark's robustness and imperception, we present a method which can definite the intensity of the image embedded by digital watermark by the content of image.

兼顾数字水印的稳健性和不可见性要求，提出一种根据图像内容确定嵌入数字水印图像强度的方法。

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This paper, aimed at information security, studies the general principle of digital watermark and analyses the structure of the image data file. The compression method of binary image and digital watermark algorithm based on information substitution is presented.

针对信息安全问题，研究数字水印的一般原理，对图像数据文件的结构进行了分析，给出了二值图像的压缩方法和基于信息替代的数字水印算法。

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The information hiding technology mainly includes the steganography and digital watermark technology.

信息隐藏技术主要包括信息隐匿技术和数字水印技术.

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This paper proposes a novel digital video watermark algorithm based on DCT and NCG.

提出一种基于DCT和NCG的数字视频水印算法.

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The use of cryptography technology prevents the fake-watermark attack, and the digital signature and watermarking certificate authority technology avoids the man-in-the-middle attack.

通过密码学技术的使用，防止了伪造水印攻击；结合数字签名技术和数字水印认证中心，防止了中间人攻击。

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A blind grayscale digital watermark algorithm.

灰度级的水印算法.

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Watermark embedding algorithms based on quantizing frequency domain parameters of digital audio signal

基于量化数字音频信号频域参数的水印嵌入算法

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The main purpose of digital watermark is copyright protection of digital work.

数字水印主要用于数字作品的版权保护。

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It incorporated data encryption, digital watermark, identity authentication, rights expression and access control.

它融合了数据加解密、数字水印、身份认证、权利描述、访问控制等技术，通过内容包装、内容分发、授权管理和使用控制来保护数字作品的版权。

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Adaptive Audio Digital Watermark Algorithm Based on m Sequence Modulation

基于m序列调制的自适应音频数字水印算法研究

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The Study of Information Protection and Digital Watermark and Its Development

信息隐藏与数字水印的研究及发展

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Information hiding techniques including steganography, Covert channel, digital watermark technology.

信息隐藏技术包括隐写术，隐信道技术，数字水印技术等。

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This article discusses is the application information hideaway technology theory, increases the digital watermark in the sound document the technology.

本文讨论的是应用信息隐藏技术的理论，在声音文件中添加数字水印的技术。

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Digital watermark technology is used in server system.

服务器系统采用了数字水印日志技术。

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An Audio Digital Watermark Method of Wavelet Based on Dither Modulation

基于扰动调制的小波音频数字水印

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A robust digital watermark embedding algorithm according to assigned image degradation

确定图像降质的鲁棒性数字水印嵌入算法

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Digital Watermark Techniques and Research on Their Methods

数字水印及其方法研究

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On Image Code and Digital Watermark Technology

关于图像编码和数字水印技术

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Audio Frequency Digital Watermark Algorithm Based on Wavelet and Complex Cepstrum Transform

基于小波与复倒谱变换的音频数字水印算法

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Digital Watermark Image Based on Discrete Cosine Transformation

基于离散余弦变换的数字水印图象

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Research on Wavelet Transform in Image Digital Watermark

图像数字水印中的小波变换技术研究

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This study as experienced by traditional password encryption-decryption improve and promote each other; the three-dimensional digital watermark attack algorithm and three-dimensional digital watermarking algorithm are complementary and mutually promoting.

这就象传统密码学所经历的加密&解密的否定之否定的螺旋提高相互促进的过程一样，三维数字水印攻击算法与三维数字水印算法相辅相成，互相推动。

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This paper proposes a scheme of digital watermark based on Turbo coding.

提出一种基于Turbo码的数字水印方案。

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The Research of Digital Watermark in Static Image

数字水印在静止图像中应用的研究

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Embedding technique with gray digital watermark based on neural network

基于神经网络的灰度级数字水印嵌入技术

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The digital watermark is to prevent pirating.

数码水印图案是用来防止盗版的.

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The Fragile Type Digital Watermark Algorithm for Word Document Authentication

用于Word文档认证的脆弱型数字水印算法

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This article finally introduced the wavelet transformation digital watermark inserts with the examination simulation simulation.

本文最后介绍了小波变换的数字水印嵌入和检测模拟仿真.

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