如果混沌序列某一比特位为0，则将对应的加密水印信息嵌入到待嵌入图像信息的最低比特位。
When a bit in chao sequences is equal to 0, hiding watermark information of the corresponding bit is embedded into Least Significant Bite.
iText允许用户创建水印，对文档进行加密以及设置其他输出细节。
IText allows you to create watermarks, encrypt the document, and other output niceties.
为保证图像数字水印的鲁棒性和安全性，结合加密技术，提出了一种使用协同神经网络的图像数字水印算法。
An digital image watermark algorithm is proposed based on the synergetic neural network, combined with encryption technique, to guarantee its robustness and security.
数字水印技术就是在这个背景下应运而生的，它可以有效地弥补传统信息加密方式的缺点。
Digital watermarking occurred in such a background, which can make up for the shortcomings of traditional methods of information cryptology.
该方法在一定的量化标准下利用小渡变换提取图象的特征信息，通过混沌序列对其加密生成数字水印。
In this method, the original image 's feature is extracted by using wavelet transform and quantization. The feature information is changed into watermark by the chaotic sequence encryption.
为了对数字水印技术的新需求，我们在本文中提出了一种基于混沌加密的频率域数字图像水印新算法。
In order to satisfy the new requires to digital watermark, we propose a chaotic encrypted image digital watermarking algorithm based on DWT domain in this paper.
图像是否受到篡改，并检测出图像受到篡改的部位。最后论文分析了当前在混沌加密与图像水印研究中存在的问题，并指出了进一步的研究方向。
Finally, the thesis is concluded by pointing out some open issues on the research of chaos based encryption and image watermarking as well as highlight some further research directions.
利用混沌系统的特点调制了两种不同的混沌序列，分别用于水印加密和子图像的抽取。
Two chaotic sequences are modulated according characters of chaotic system, using for watermark encryption and sub image extraction.
提出了一种基于交换加密技术的安全公平买方-卖方水印协议，用于保护数字内容版权。
Taking advantage of the commutative encryption, the proposed buyer-seller watermarking protocol is secure and fair to both sides in digital copyright protection.
基于混沌理论，对作为水印的灰度图像进行了加密的处理。
Based on chaos theory, the gray image as watermark is encrypted.
在进行加密打包原始资源之间，应先对其数字内容添加水印，并声明版权。
Performing encryption amid the aboriginal ability package, you should add watermarks to their agenda agreeable and absorb statement.
本文通过研究公钥密码学中的二次背包体制，给出了一种基于二次背包加密的数字水印算法。
In this paper, we propose a new digital watermarking algorithm based on quadratic knapsack problem, which belongs to public-key cryptosystem.
服务器端水印嵌入、媒体数据的加密和PD CF打包以及客户端的逆处理过程是本发明的核心内容。
Watermark embedding at a server end, encryption and PDCF packaging of media data and reverse processing of a client are the core content of the invention.
在数字图像水印、图像加密等领域，经常需要一个与图像正交的伪随机序列。
In digital image watermarking and image encryption, researchers often require a pseudo random sequence which is statistically orthogonal to an image.
为了增强水印信号的安全性，采用了基于混沌和位平面的水印加密算法。
In order to enhancing the security of the watermark, we employ an encryption technology based on chaos and bit plan.
提出了一种利用加密算法并结合散列函数选择文本中嵌入水印的汉字序列的算法。
A text image watermarking algorithm using encryption and hashing function is presented to choose Chinese characters sequence which need to be embedded watermarking.
在研究数字全息技术的基础上，提出了一种新的加密的同轴全息数字水印方法。
A new encrypted in-line holographic watermarking technique is proposed based on double-random phase encoding method, holography and digital watermarking.
该文基于数字水印技术和数据加密技术提出了一个电子报刊发行的方案。
This paper presents a scheme of electronic press issuing system, based on the technology of digital water-mark and data encryption.
提出了一种在图像小波域中嵌入文字的新型鲁棒水印算法，并对嵌入的文字进行混沌加密和BCH纠错编码。
This paper brings forward a text embedding digital watermarking method based on image's DWT domain, meanwhile, using the chaotic sequences to encrypt the text data and BCH code to correct them.
解决多媒体信息安全问题的两种有效手段是加密技术和数字水印技术。
Two effective ways to solve the problem are encryption and digital watermarking technology.
同时数字水印技术的出现为数据加密与追踪提供了新的技术手段。
At same time, digital watermarking, coming forth as a new technology, provides a new measure for hiding and tracking of data.
结合加密技术与图像处理算法，提出了一种类似于公开密钥体制的基于分块dct变换的数字图像自适应水印算法。
In this paper, a block based adaptive watermarking technique in DCT domain that is similar to the public key system is proposed in light of the cryptography technique and image processing technique.
分析了几种典型的对称数字水印算法，并且对对称水印加密算法和非对称水印加密算法的特点进行比较分析。
This paper is devoted to some typical asymmetric watermarks and some basic characteristics of asymmetric watermark and symmetric watermark.
为此，本文应用一种改进的水印预处理技术，将混沌序列和图像置乱技术结合起来对灰度水印图像进行加密。
Therefore, this paper applied an improved watermark preprocessing technologies, the chaos theory and image scrambling technology combine encrypt of watermark image.
目前数字全息技术已经广泛应用于形貌测量、变形振动测量、显微观测、信息加密、粒子场测量、数字水印等领域。
At the present time digital holography is widely used in shape measurement, distortion shaking measurement, micro observation, information encryption, particle measurement, digital watermarking et al.
最后论文分析了当前在混沌加密与数字水印研究中存在的问题，并指出了进一步的研究方向。
Finally, the thesis is concluded by pointing out some open issues on the current research of chaos based encryption and digital watermarking as well as indicating further research directions.
最后论文分析了当前在混沌加密与数字水印研究中存在的问题，并指出了进一步的研究方向。
Finally, the thesis is concluded by pointing out some open issues on the current research of chaos based encryption and digital watermarking as well as indicating further research directions.
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