而不可见水印对图像的质量影响很小，并对常规图像处理操作具有良好的鲁棒性。
The impact of the invisible watermarks on the image quality is slight, and the invisible watermarks are robust to common image processing operations.
分析人类视觉系统的亮度和对比度特性，提出了一种DCT域自适应可见水印算法。
By analyzing the characteristics of the brightness and contrast characteristic of the human visual system, an adaptive visible watermarking algorithm based on DCT was proposed in this paper.
通过分析前人的研究进展，结合可见水印特性，在小波域实现了一种具有图像内容保持特性的可见水印算法；
Firstly, by analyzing former researches and visible watermark characteristics, a visible watermarking algorithm with feature of holding image content is realized.
基于安全原因，本报告中的几幅图片被打上了水印，对于观察者来说就不那么清晰可见。
For security reasons, several images in this report are watermarked in a way that is not apparent to the observer.
新钞增加了新的特征，如晃动钞票时颜色会改变的全息图案，迎光可见的纵向水印条。
The new notes incorporated additional features, such as holograms that change color when the note is tilted, and vertical watermark bars that become visible when the note is held into light.
模型基于噪声可见性函数(NVF)的计算来决定水印嵌入强度，使水印更多的嵌入到图像的纹理和边缘区域。
The HVS model is based on the computation of the noise visibility function (NVF) and embed at the texture and edge region stronger embedded watermarks.
实验结果表明，两种水印算法均具有很好的不可见性，对常见的图像处理操作具有很强的鲁棒性。
The experimental results show that the watermarks generated with the proposed algorithm are invisible and robust against noise and commonly used image-processing technique.
在本文中，我们将研究主要集中在用于版权保护的鲁棒的不可见数字水印。
In this paper, we limit the scope of our research to robust and imperceptible digital watermarking for copyright protection.
实验结果表明，该算法不但使水印具有不可见性，而且所嵌入的水印对空间几何失真和信号处理等具有较强的鲁棒性。
The experimental results show that not only does this algorithm make the watermark invisible, but the imbeded watermark also has the strong robust upon the geometry distortion in the spa.
相关试验证明，本方案的水印稳健性和不可见性均达到了相当水平，运算复杂度也比较低。
The experimental results demonstrate that the watermark has the considerable perceptual invisibility and robustness, and the operation complexity is comparatively low in this scheme.
如今一个有效的途径就是在图象或者视频序列中嵌入一个不可见的信号——称为数字水印，来进行版权保护。
One approach for copyright protection is to introduce an invisible signal, known as a digital watermark, into an image or video sequence.
在对彩色图像及相关算法进行分析的基础上，提出了一种适用于彩色图像版权通知的可见数字水印算法。
This paper presents a visible watermarking algorithm for color images copyright notification on the basis of analyzing color images and related algorithms.
数字水印是一种嵌入到图像、视频或者音频数据中的不可见标志，通过对水印信息的检测可以达到保护多媒体数据版权的目的。
Digital watermark is invisible mark embedded in digital image, video or audio documents, by detecting the information of watermarking to protect copyright of multimedia data.
实验证明，水印具有不可见性，对通常的图像处理，如JPEG压缩、剪切、缩放、中值滤波等以及噪声干扰都具有很强的鲁棒性。
Experimental results show the watermark is invisible and robust to common image processing operations such as JPEG compression, cropping, resizing, median value filtering and noise perturbation.
针对如何解决水印不可见性和鲁棒性矛盾这一问题提出了一种新的水印方案。
This paper proposes a new image watermarking scheme in order to solve the contradiction between imperceptibility and robustness.
实验结果证实了所提出的水印算法具有很好的不可见性，对JPEG有损压缩、噪声、剪切等攻击具有良好的稳健性。
The experimental results demonstrate that the watermarks generated with the proposed algorithm are invisible and robust against JPEG lossy compression and noise and cut processing.
实验表明，使用该方法能在确保水印不可见的同时提高水印的嵌入强度，从而可提高水印的顽健性，且该方法具有很好的适应性。
The experimental results show that the method can increase the watermarking strength so that the robustness of digital watermark is enhanced and that the method has very good adaptability.
结果表明两种图像水印算法均具有很好的不可见性，对常见的图像处理操作具有很强的鲁棒性。
The results show that two kinds of image watermarking algorithms do not all have good visibility of the common image processing operations are highly robust.
本文提出了一种基于噪声可见函数(NVF)量化的水印算法。
In this paper, we propose a digital image watermarking algorithm using the noise visibility function (NVF) based on wavelet quantization.
实验结果表明，该算法具有不可见性，对于通常的图像失真具有较好的鲁棒性，说明最低频成分并不是水印的禁区。
Experimental results show the algorithm is invisible and robust to certain common distortions. Thus the lowest frequency component is not prohibition for watermarking.
缓解了水印的不可见性与鲁棒性之间的矛盾，提高了水印安全性。
This algorithm mitigate the illogicality between the robustness and invisibility and enhance the watermarking security.
由上文可见，本文所提出的水印算法，最大的特点就是安全性与实用性。
Then, we can know that what mostly characterize the algorithms presented in this paper are security and practicality.
实验表明，算法在MPEG - 4水印视频经过滤波、旋转、尺度变化、代码转换编码等处理后，水印在可见性和鲁棒性等方面取得了良好的效果。
From the experiment results, it indicates that, after the watermarked MPEG-4 video suffer filtering, rotation, scaling and transcoding, the watermark possesses good imperceptibility and robustness.
可见该脆弱水印算法具有广阔的应用前景。
The weak watermark method presented in this paper has wide applications.
该算法基于电子签章系统，通过在印章图像中嵌入可见数字水印提高印章图像隐藏信息的能力，得到了较好的效果。
The arithmetic bases on the digital seal system. By embedding visible watermarking to the seal image, improving the ability of the seal image to hide information, and obtained good result.
该算法完全基于多媒体信号的内容生成特征水印，进而将其不可见的隐藏于原始信号中，从而达到对原始信号进行内容保护的目的。
As for the target signal ot be protected, a feature watermark is automatically generated according to its content and is hidden imperceptibly in the original signal.
该方案较好地兼顾了对图像水印的不可见性要求和鲁棒性要求。
The scheme meets properly the requirement of invisibleness and robustness for watermark.
为了提高抗几何攻击性能，同时保证不可见性，提出了一种结合傅立叶-梅林变换和零水印概念的图像水印算法。
In order to improve performance of resistance to the geometrical attack while keep invisible, a zero-watermark algorithm for digital image based on Fourier-Millin transforming is proposed.
为了提高抗几何攻击性能，同时保证不可见性，提出了一种结合傅立叶-梅林变换和零水印概念的图像水印算法。
In order to improve performance of resistance to the geometrical attack while keep invisible, a zero-watermark algorithm for digital image based on Fourier-Millin transforming is proposed.
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