但感知模型和水印容量间的关系还没有受到应有重视。
But the relationship between perceptual model and watermarking capacity has not been considered enough.
最后分析了有攻击情况下水印提取错误率与水印容量的关系。
The capacity upon threshold can be calculating. At last, the relationship is analyzed between watermark extraction error rate and watermark capacity in attacking scenario.
该方法的水印容量由标志代码的数量动态确定，可自主的提高水印容量。
The marked codes are decided by the characteristic of the document, and the watermarking capacity decided by the amount of marked codes can also be flexible.
提出的文本数字水印技术具有水印容量大、视觉影响小、兼容性强等特点。
The proposed text watermarking technology paper has following advantages: carrying more hiding information, little vision influence and good compatibility.
该算法属于脆弱型水印，拥有良好的安全性能和较高的水印容量，具有一定实用价值。
This algorithm belongs to the frail watermark, it has the good safety performance and the high watermark capacity and practical value.
实验结果证明了该算法在提高水印容量的同时，嵌入水印也具有很好的安全性、隐蔽性和鲁棒性。
Experimental results demonstrate that, not only the watermarking capacity is increased, but also the embedded watermarks are invisible, secure and robust.
研究结果表明，水印检测错误率主要取决于水印的平均能量和水印容量，而且随着水印容量的提高而增加。
Reseatch result shows that watermark detection error is mainly influenced by the watermark mean energy and watermarking capacity. The detection error rises with the increase of watermarking capacity.
实验结果表明，算法更合理地将水印嵌入在MPEG-4视频流中，水印容量得到较大提高，对恶意攻击的认证精度定位在块级别。
Through experiments the method can hide watermark in MPEG-4 video stream more rationally, the capacity of watermark increases greatly and the authentication precision locates in block level.
本文最后对提出的水印算法进行了抗攻击能力实验，结果表明该算法具有较好的鲁棒性、透明性和较大的水印嵌入容量。
At last, experiments on this algorithm are implemented and experimental results show that the proposed algorithm has better robustness, transparency and larger capacity.
传统盲加性扩频水印系统具有鲁棒性高、检测值低、容量小的特点。
Traditional blind additive ss (spread spectrum) watermarking systems have such features: high robustness, low detection value and small capacity.
文中介绍了作为基本通信系统的水印、作为边信息的水印、利用脏纸编码的水印及安全水印的信道容量。
The capacity of watermarking as a basic communication system, the capacity as side information, the capacity using dirty paper encoding and the capacity of security watermarking are introduced.
该文对数字水印信道容量的研究结果进行了分析总结。
The diversified researches of capacity of digital watermarking are summarized in this paper.
给出了一种大容量索引图像中水印方案的设计与实现。
Based on image scrambling and pattern recognition, a new watermarking scheme in huge index image is proposed.
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；
Theories related to watermark are introduced in detail, including communication model, related detection model, hiding information capacity analysis and security of steganography.
为了解决在图像中嵌入大容量水印难度大的问题，设计并实现了一种新的基于TURBO编码的鲁棒性数字水印算法。
In order to solve in the image inserts the large capacity watermark difficulty major problem, designed and has realized one kind newly based on the TURBO codes robust digital watermark algorithm.
通过对水印信道容量的分析，得出了对水印的嵌入和检测算法研究具有指导意义的结论。
An effective conclusion for designing the arithmetic of embedding and detecting is found by analysis the capacity.
实验表明该算法能够在模型中嵌入大容量的水印消息，并减少了提取水印的时间。
Results show blind algorithm can embed high-capacity watermarking into models, and reduce the time of extracting watermarking.
本文着力于研究信息隐藏及数字水印的容量问题，并将容量与数字水印算法结合起来。
This paper focuses on the capacity of information hiding and digital watermarking. There are three contributions in this thesis as follows:1.
近来，有学者提出：图像经过DCT变换后，它的直流分量的感觉容量比交流分量大。从稳健性的角度，DC分量最适合用来嵌入水印。
Recently, some scholars argue that more robustness can be achieved if watermarks are embedded in DC components since DC components have much larger perceptual capacity than any AC components.
近来，有学者提出：图像经过DCT变换后，它的直流分量的感觉容量比交流分量大。从稳健性的角度，DC分量最适合用来嵌入水印。
Recently, some scholars argue that more robustness can be achieved if watermarks are embedded in DC components since DC components have much larger perceptual capacity than any AC components.
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