Finally, the character of video digital watermark and the current technical method are discussed.
最后,论文分析了视频水印技术的特点和目前所采用的主要技术手段。
A novel video content authentication scheme, based on cloud watermark and shot segmentation, is proposed.
基于云水印及镜头分割技术,提出了一种新颖的视频内容认证方案。
Comparing the extracted feature watermark and embedded watermark can identify the image's authority and detect the content integrity.
水印检测时,将提取的特征水印与嵌入水印进行比较,不仅可以确定图像的版权,还可以证明内容的完整性。
This paper is devoted to some typical asymmetric watermarks and some basic characteristics of asymmetric watermark and symmetric watermark.
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。
Quality of the watermarked data is an important metric for measuring the invisibility of the watermark and the validity of the marked data.
含水印数据的质量评价是衡量水印嵌入隐蔽性和数据可用性的重要指标。
The original watermark is divided into the robust watermark and the semi-fragile watermark for copyright protection and image authentication.
原始水印分为鲁棒水印和半脆弱水印,分别用于版权保护和图像认证。
Embedding robust watermark and fragile watermark in one image simultaneously, an algorithm of compound, adaptive digital watermarking was presented.
提出一种同时嵌入鲁棒性水印和易损性水印的复合型数字水印算法。
The main problem to research halftone digital watermarking is how to ensures the robust of watermark and the vision of halftone images at the same time.
半色调图像数字水印研讨的主要难点是如何在保证嵌入水印健壮性的前提下绝可能地保证宿主图像的视觉后果。
Leaves leeway protective film with after, dustproof antifouling, does not keep the watermark and the hand imprint, guarantees the surface to be luminous.
用后留有一层保护膜,防尘防污,不留水纹及手印,确保表面光亮。
Simulation results show that the proposed method may improve the PSNR for embedding the visible watermark and enhance the robustness of the invisible watermark.
实验结果显示,所提的方法能有效改善数字水印技术中图像品质与水印鲁棒性相互制衡的问题。
The statistical detection principle is used to achieve the blind extraction of the discriminating watermark and the blind detection of the Confirmable watermark.
在水印的提取与检测阶段,本文应用了统计学假设原理,分别实现了对识别水印的盲提取和确认水印的盲检测。
As the variety of watermark and its wide use, this thesis will focus on the three following aspects: image scrambling, color image watermark, and video watermark.
数字水印应用涉及范围广泛,种类繁多,本文分别在图像置乱、彩色图像水印、及视频水印三个方面做了部分研究工作。
When extracting the watermark, determine the extracting location in accordance with the key, extract the binary watermark and then recover the gray image watermark.
提取水印时,按照密钥确定水印提取位置,使用与嵌入互逆的方式提取二值水印,恢复为灰度水印。
The results demonstrate that the proposed technique has greatly decreased the error code rate of the retrieved watermark and improved the robustness and invisibility.
实验结果表明,该技术不仅降低了水印在传输过程中的差错率,而且可以达到提高埋藏水印的鲁棒性和隐匿性的目的。
Furthermore, this algorithm, adapted to the local image characteristics, can control the robustness of embedded watermark and improve visual quality of the watermarked video.
同时这种算法可以根据图像局部特征控制水印鲁棒性,改善画质。
Test results show that embedding around video quality has not changed significantly, in the absence of attack detection of the watermark and the original watermark than no obvious changes.
试验结果表明,水印嵌入前后,视频质量没有显明的变化,在无攻击时检测到的水印信息和原水印信息比拟也没有显明的变化。
A gray level image with rich details is used as a watermark and embedded in vector transform domain, more than scalar transform domain used traditionally such as discrete cosine transform domain, etc.
本文提出了一种新的数字静止图像的水印嵌入算法,该算法将含有丰富细节信息的灰度级图像作为水印,水印嵌入过程不是在传统的标量变换域(如离散余弦变换域等)内进行,而是在矢量变换域实现。
The watermark, Dr Venter says, includes a cipher which contains the URL of a website and three quotations, if you can work out how to decode it.
文特尔说,水印包括一段密码,你要是会解密的话,就能发现里面含有一个网站的网址和三段引文。
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.
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。
When we shrink the browser, the watermark textbox and search button stay the same size because their Grid container columns are a fixed width.
当我们缩小浏览器尺寸时,带水印的文本框和搜索按钮会保持同样的尺寸,因为其grid容器列的宽度是固定的。
If the background is light - then the watermark should obviously also be fairly light and vice versa. Here is an example of a good and bad watermark.
如果背景是淡色的,那么水印当然也要是适度的淡色,反之亦然。
This works only if content owners take the trouble to affix the watermark-and then it only spots duplicates, not other forms of piracy such as recording a movie at a cinema.
该法只适于当内容所有者不怕麻烦去黏贴水印标志的情况下。另外,该法只能识别复制品,对其他形式的盗版如在电影院录制电影就无能为力了。
Therefore, the embedded information, as required, should not interfere the normal use of the carrier data, and this is the hiding requirement of watermark technique.
因此,该技术要求添加到载体中的信息不破坏载体数据的正常使用,此即为水印技术的隐形性要求。
This is a very useful tool to watermark images in batches and with good set of features, it is totally worth.
这是一个非常有用的工具,分批水印图像具有良好的功能集,这是完全值得。
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。
When detecting the watermark, we do not need the original image and original watermark.
盲检测时只需要水印密钥和待测图像就可以恢复出嵌入的信息。
With theoretic testify and experimental analysis, the method of using synergetic order parameter as quantitative index of digital watermark robustness has feasibility and practicability.
从理论推导和实验计算分析,用协同序参量作为数字水印的鲁棒性评判指标,具有一定可行性和实用性。
This thesis starts with the mainframe of the digital watermarking system, and introduces the general methods of watermark embedding, watermark detecting and watermarking system attacking.
本文首先介绍了数字水印系统的一般框架,水印的各种嵌入和检测方法,水印的攻击方法。
On the train ride up, I opened the book and out fell a bookmark from a Rome bookshop where I had worked for a while after college and where I had first read “Watermark” on a slow afternoon.
在前往威尼斯的火车上,我打开那本《Watermark》,从中掉出了一张书签,是我大学毕业以后在罗马的一家书店工作的那阵子得到的。 也正是在那家书店,一个悠闲的下午,我第一次读到了《Watermark》。
On the train ride up, I opened the book and out fell a bookmark from a Rome bookshop where I had worked for a while after college and where I had first read “Watermark” on a slow afternoon.
在前往威尼斯的火车上,我打开那本《Watermark》,从中掉出了一张书签,是我大学毕业以后在罗马的一家书店工作的那阵子得到的。 也正是在那家书店,一个悠闲的下午,我第一次读到了《Watermark》。
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