The method has very good watermark security and the watermark is extracted without using original unwatermarked image.
该方法嵌入的水印具有非常好的安全性，且水印提取不需要原始未加水印的图像。
An digital image watermark algorithm is proposed based on the synergetic neural network, combined with encryption technique, to guarantee its robustness and security.
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。
The security features of the former 10, 000 yen notes were the watermark, the use of ultrafine line printing, and luminescent ink.
前一版10000元钞票的防伪特征是水印、精细线条印刷和发光油墨。
In the existing method of digital watermark, for embedding watermark information, authors modify more or less original image data through various methods to limit its robustness and security.
已有的数字水印方法为了嵌入水印信息都对原图像数据采用各种方法或多或少地进行了修改，这样做使其鲁棒性和安全性受到限制。
The application of watermark for joint ownership can improve the security and redundancy of watermark information.
联合数字水印技术的应用提高了水印版权信息的安全性和冗余性。
The algorithms have good security and the mean of watermark sequences is close to zero, preparing for following two algorithms.
该算法安全性好，且生成的水印序列均值近似于零，为后面两种水印技术做准备。
In order to enhancing the security of the watermark, we employ an encryption technology based on chaos and bit plan.
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。
Based on the experiment system, a scheme using the digital watermark to protect face information database is proposed, which can increase the security and enrich the content of face images.
基于该系统设计了脆弱水印保护人脸图像数据库和保存额外信息方案，提高了安全性，丰富了人脸图像信息内容。
Theories related to watermark are introduced in detail, including communication model, related detection model, hiding information capacity analysis and security of steganography.
从水印的通信模型建立，水印的相关检测模型，到信息隐藏容量分析，隐写术的安全性理论，详细介绍了水印的相关理论；
Digital watermark is a new and effective way to protect digital products and to maintain the data security. It is a very practical information hiding technique.
数字水印是一种新的有效的数字产品保护和数据安全维护技术，它是一种十分贴近实际应用的信息隐藏技术。
But, as a very important information security technology, digital Watermark technology has provided a strong solution for the protection of digital multimedia work.
而数字水印技术作为一种重要的信息安全手段，为多媒体著作的保护提供了一个强有力的解决方案。
Compared to the original algorithm, the security and the ability of resisting some attacks such as cutting and JPEG compression were obviously enhanced in the watermark system.
改进后的算法与改进前相比较，水印系统的安全性得到了提高，且对抗剪切、JPEG压缩等攻击的能力明显增强。
This paper mainly discusses the watermark technique applied in information security concerning digital image.
本论文主要探讨有关数字图像信息安全中的数字水印技术。
Chaos map and singular value decomposition of matrix technology are introduced to improve the watermarking imperceptibility, security and robustness of watermark image.
利用混沌映射结合矩阵奇异分解，将水印信息分散在原始图像的不同位置，提高了水印的视觉效果，保证了水印的安全性。
The blurring of security watermark is one of the important indicators in the quality inspection system of security printing.
在防伪印刷纸张质量检测系统中，纸张防伪水印的模糊是其检测的重要指标之一。
It can provide effective protection for digital media forgery, falsification, authentication, security and intactness by embedding a special mark (digital watermark) into the multimedia data.
它主要通过在媒体信息中嵌入标记信号(数字水印)，为媒体信息在防伪、防篡改、认证、保障数据安全和完整性等方面提供有效的技术手段。
Digital Watermark technique (DWT), in contrast, is a new technique addressing this security problem and as an effective solution has drawn much attention from more and more research workers concerned.
数字水印技术已成为处理电子商务安全问题的一种新兴技术。目前数字水印技术作为解决此类问题的有效办法已引起越来越多的相关研究人员的兴趣。
It was mainly introduced the design solution by the digital watermark technology solving keys security of dynamic encryption and decryption.
介绍一种结合数字水印技术解决动态加解密密钥安全性的设计方案。
Because the chaotic sequence is very sensitive to the initial value, the attackers cannot deduce the whole sequence from the finite sequence and the security of watermark information is ensured.
攻击者很难从一段有限长度的序列推断出整个混沌序列的初始条件，因此可保证水印信息的安全性。
The digital watermark technology is one kind of effective digital product copyright protection and the data security maintenance technology which appears in the recent ten years.
数字水印技术是近十年来出现的一种有效的数字产品版权保护和数据安全维护技术。
CAJ digital watermark in information security applications.
CAJ数字水印在信息安全中的应用。
The invention relates to improvements in security substrates and in particular to fibrous security substrates, such as paper, incorporating a watermark.
本发明涉及安全基片的改进，尤其涉及带有水印的如纸张之类的纤维安全基片。
The FRFT has signal representation property both in space and frequency domain. The original image and the watermark is transformed with different orders to improve watermarking security.
分数傅里叶变换具有空域和频域双域表达能力，可以对原始图像和水印信号分别进行不同阶次的分数傅里叶变换以增强水印安全性。
The results of the experiment indicate that the method can assure the security of the watermark, and the destination image has good invisibility and robustness.
实验表明，本方法保证了水印信息的安全性，有较好的不可见性和鲁棒性。
A utilizable Digital watermark system should own good Robustness, security, transparency.
一个有效的水印体系必需具备较强的鲁棒性、安全性和透明性。
To improve the security against the counterfeiting attack, this paper proposes a secure dual watermark scheme for image tamper detection and recovery.
为提高可恢复双水印算法抵抗伪造攻击的能力，提出一种用于图像篡改检测和恢复的安全双水印算法。
We point out the solution of the security problem is based on encryption technique and digital watermark technique.
数字水印技术正是为了解决这一问题而产生的。
We point out the solution of the security problem is based on encryption technique and digital watermark technique.
数字水印技术正是为了解决这一问题而产生的。
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