英文摘要写作训练报告.doc

英文摘要写作训练报告题目 图像视频水印算法研究 学号 姓名 班级 电信科0801班 日期 2011年 12 月 28 日 英文摘要内容安排研究项目： 图像视频水印算法研究一、 根据关键词查找中英文参考文献要求：中英文文献各10篇，并将其存于文件夹中提交；参考文献要包括期刊文章、会议文章、学位论文、书籍等内容。关键词： 图像水印；视频水印；软件水印参考文献：1张奎.数字图像水印算法研究D.太原：太原理工大学,2010.2朱陶丽.基于MPEG-4的视频水印技术研究D.北京：北京交通大学,2010.3卢静.基于变换域鲁棒视频水印算法研究D.海南：海南大学,2011.4熊祥光.基于小波变换和HVS的图像与视频水印算法研究D.武汉：中南民族大学，2010.5唐宁.小波域自适应图像水印研究D.曲阜：曲阜师范大学，2010.6明细细.抗几何攻击数字图像水印算法研究D.湖南：湖南大学，2010.7张伟东，端木春江，李均波.一种抗几何攻击的数字图像零水印方案J.计算机与现代化.2011年第2期.8同鸣，秦可臻，姬红兵.一种AVS压缩域视频语义鲁棒水印方法N.西安电子科技大学学报（自然科学版）.2011-2（第38卷第1期）.9王晶，王向阳.基于人类视觉系统的数字图像水印方法J.计算机工程.2011-7（第37卷第13期）.10张燕，朱俊平.基于小波域和图像融合技术的视频水印算法研究J.微计算机信息.2011年第27卷第5期.11SONG Wei,HOU Jian-jun,LI Zhao-hong,HUANG Liang.Chaotic system and or factorization based robust digital image watermarking algorithm.J. Cent. South Univ. Technol. (2011) 18: 116124.12Bi, N., Sun, Q., Huang, D., Yang, Z., Huang, J.: Robust image watermarking based on multiband wavelets and empirical mode decomposition. IEEE Trans. Image Processing 16(8), 19561966 (2007).13Min-Jen Tsai.Wavelet tree based digital image watermarking by adopting the chaotic system for security enhancement.Multimed Tools Appl (2011) 52:347367.14Tsai MJ, Shen CH (2007) Wavelet Tree Group Modulation (WTGM) for digital image watermarking.Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing 2:173176.15Tsai MJ (accepted for publication in 2009) Dynamic Energy Enabled Differentiation (DEED) Image Watermarking Based on Human Visual System and Wavelet Tree Classification. Multimedia Tools and Applications.16Bi, N., Sun, Q., Huang, D., Yang, Z., Huang, J.: Robust image watermarking based on multiband wavelets and empirical mode decomposition. IEEE Trans. Image Processing 16(8), 19561966 (2007).17Licks, V., Jordan, R.: Geometric Attacks on Image Watermarking Systems. IEEE Multimedia Magazine 12(3), 6878 (2005).18Mikolajczyk, K., Schmid, C.: A performance evaluation of local descriptors. IEEE Trans.Pattern Analysis and Machine Intelligence 27(10), 16151630 (2005).19K. Wong and K. Tanaka, “Complete video quality preserving data hiding with reversible functionality”, In Proc.of ISCCSP, pp 1029-1034, March 2008.20M. WANG, Q. PEI, K. FAN, “Integrality authentication schema of H.264 video based on the fragile watermark”, Journal of xidian University, Vol. 34, No. 5, pp.823-827 , 2007.二、 摘要英译汉翻译1、英文原文：A DCT-domain system for robust image watermarkingAbstractAn adaptive watermarking technique is introduced in this work. A regional perceptual classifier is employed to assign a noise sensitivity index to each region. The watermark is inserted in the original image according to this index by using block DCT. The detection of the watermark is designed to achieve a desired false alarm probability. Digital watermarking has been proposed as a solution to the problem of copyright protection of multimedia data ina networked environment. It makes possible to tightly associate to a digital document a code allowing the identification of the data creator, owner, authorized consumer, and so on. In this paper a new watermarking algorithm for digital images is presented: the method, which operates in the frequency domain, embeds a pseudo-random sequence of real numbers in a selected set of DCT coefficients. After embedding, the watermark is adapted to the image by exploiting the masking characteristics of the human visual system, thus ensuring the watermark invisibility. By exploiting the statistical properties of the embedded sequence, the mark can be reliably extracted without resorting to the original uncorrupted image. Experimental results demonstrate that the watermark is robust to several signal processing techniques, including JPEG compression, low pass and median filtering, histogram equalization and stretching, dithering, addition of Gaussian noise, resizing, and multiple watermarking.Keyword: Digital watermarking; Copyright protection; Security; Image authentication中文翻译： 基于DCT变化域系统的鲁棒性图像水印算法摘要 文提出了一个自适应水印技术。采用区域感知分类器来对每一个区域指定一个噪声敏感系数指标，通过这种基于块的DCT变换的指标来把水印嵌入到原始图像，这种对水印的检测的目的是为了实现一个所需要的错误警戒概率。数字水印技术作为一种在网络环境中对多媒体数据版权保护问题的解决方法而被提出，它使得紧密联系一段数据文件代码来鉴别数据的创建者、所属者、授权用户等成为了可能。本文提出了一种新的数字图像水印算法：在频域中，往已选择的DCT系数集合中嵌入一段实数伪随机序列，这样，根据人眼的视觉隐蔽特性而把水印掩藏在图片中，从而保证水印的隐藏。利用嵌入的随机序列的统计特性很容易的提取出水印，而不用依靠完整的原始图像。实验表明，这种水印技术对于常见的JPEG压缩、低通和中值滤波、直方图均衡和展缩、抖动、加高斯噪声、尺度变换及多水印等信号处理技术有很好的鲁棒性。关键字：数字水印；版权保护；安全性；图像认证2、英文原文：TRANSPARENT ROBUST IMAGE WATERMARKINGAbstractWe propose a watermarking scheme to hide copyright information in an image. The scheme employs visual masking to guarantee that the embedded watermark is invisible and to maximize the robustness of the hidden data. The watermark is constructed for arbitrary image blocks by filtering a pseudo-noise sequence (author id) with a filter that approximates the frequency masking characteristics of the visual system. The noise-like watermark is statistically invisible to deter unauthorized removal. Experimental results show that the watermark is robust to several distortions including white and colored noises, JPEG coding at different qualities, and cropping.中文翻译：透明鲁棒性图像水印算法摘要 我们提出了一个把版权信息隐藏在图像中的水印方案。此方案利用人眼的隐蔽特性，保证了水印的隐藏及隐藏数据最大限度的鲁棒性。通过一个接近人眼视觉系统频率的过滤器过滤一个伪噪声序列（作者ID）来为任意图像块构造水印。这种类噪声水印是统计不可见的，从而防止非授权者对其删除。实验表面，这种水印对于包括白色和彩色噪声、不同品质的JPEG编码、种植等几种扭曲都有很好的鲁棒性。3、英文原文：Combined DWT-DCT Digital Image WatermarkingAbstractThe proliferation of digitized media due to the rapid growth of networked multimedia systems has created an urgent need for copyright enforcement technologies that can protect copyright ownership of multimedia objects. Digital image watermarking is one such technology that has been developed to protect digital images from illegal manipulations. In particular, digital image watermarking algorithms which are based on the discrete wavelet transform have been widely recognized to be more prevalent than others. This is due to the wavelets' excellent spatial localization, frequency spread, and multi-resolution characteristics, which are similar to the theoretical models of the human visual system. In this paper, we describe an imperceptible and a robust combined DWT-DCT digital image watermarking algorithm. The algorithm watermarks a given digital image using a combination of the Discrete Wavelet Transform (DWT) and the Discrete Cosine Transform (DCT). Performance evaluation results show that combining the two transforms improved the performance of the watermarking algorithms that are based solely on the DWT transform.Keyword: Digital image watermarking, image copyright protection, frequency-domain watermarking, Discrete Wavelet Transform (DWT), Discrete Cosine Transform (DCT)中文翻译：结合DWT-DCT的数字图像水印算法摘要 数字多媒体随着迅速增长的网络多媒体系统而不断扩大，迫切的需要能够保护媒体产品所有者的版权的有效的版权保护技术。数字图像水印就是一种能够阻止数字图像被非法修改的技术。尤其是基于离散小波变换的数字图像水印算法被公认为比其他算法更为广泛的接受。这是由于小波具有与人类视觉模型很类似的高空间定位、频率分布及多分辨率的特性。这篇文章中我们描述了一种具有极细微的、较强鲁棒性的结合DWT-DCT的数字图像水印算法。这种算法是给定的一个数字图像水印结合离散小波变换和离散余弦变换。性能评估表示这种结合了两种变换的改进的水印算法仅仅是依靠离散小波变换。关键字：数字图像水印；图像版权保护；频域水印；离散小波变换；离散余弦变换三、 摘要汉译英翻译1、中文原文：摘要: 为了增强水印的抗几何攻击能力,本文提出了一种基于图像内容的水印方案。图像的内容由具有几何不变性的特征点选出,在每块选出的内容上进行水印的嵌入和检测。由于图像的特征点在经过几何攻击后仍然可以保持,这样就很好地解决了水印的同步问题,保证了水印检测的可靠性。实验表明该算法能够很好地抵抗诸如旋转、缩放、剪切等几何攻击以及JPEG压缩攻击。关键词: 数字水印； 几何攻击； 特征点； Delaunay三角网；英文翻译：Abstract In this paper we proposed a digital image watermaking scheme based on image content in order to enhance the ablity of watermark to against geometric attack.we embed and test watermark on the content of every elected block while the characteristic points of the content of image which has geometrical invariance characteristic.This can because of the characteristic points can be keeped after geometric attacks,it would be a good solution to the problem of the watermark synchronization,guarantee the reliability of the watermark detection.The experiment shows that the algorithm is able to adainst such as scaling,rotating,shear geometric attacks and JPEG compress attack.Keyword: Digital watermarking；Geometric attack；Characteristic points；Delaunay triangulation network 2、中文原文：摘要: 提出一种新的基于小波变换与混沌加密的彩色数字水印算法 ,将混沌算法产生的阵列作为密码对水印图像进行加密 ,同时利用人类视觉系统HVS的特性 ,实现了水印的自适应嵌入 .在兼顾鲁棒性和不可见性的情况下 ,提出将水印按不同比例的方法 ,分别嵌入到小波域的低频和中频 (或高频)子带中 ,在提取时根据低频子带提取的水印信息对中频或高频子带的信息进行调整 ,从而恢复出更加清晰的水印图像 .实验结果表明算法同时具有很好的鲁棒性和不可见性。关键词: 数字水印； 混沌； 小波变换； 比例嵌入法英文翻译：Abstract An algorithm of digital watermarking for color based on discrete wavelet transform(DWT) and chaotic encryption is presented in this paper,which employs one kind matrix generated by chaotic algorithm as a cipher to encrypt the watermark.At the same time,the characteristics of human visual system(HVS) is utilized to embed the watermarks into an image adaptively.By cnnsidering both robustness and invisibility,the watermarks with different proportions are embedded into the low and medium frequency subands in DWT domain.The information obtained from the medium or high frequency subands is adjusted by using the information obtained from the low frequency subands when extracting the watermark so as to reconvert a clearer watermark image.The experimental results indicate both the robustness and the invisibility of the proposed algorithm.Keyword: Digital watermarking；Chaos；DWT；peopoetion embedding algorithm3、中文原文：摘要: 针对目前实用的彩色图像数字水印技术不多,特别是灰度级水印信号的嵌入算法比较少,文章提出一种二维的DWT彩色图像数字水印的新算法。基本思想是:选取二维条形码作为嵌入的水印,在嵌入之前对其进行二值化,再对结果进行分块并且对各个子块进行编码,最后将各个子块合并后的图像按照某种顺序排列作为水印。考虑到人类的视觉系统(HVS)特点,我们采用YIQ色彩空间,将水印信号嵌入到载体图像的亮度分量Y的DWT后的低频系数上。实验结果证明该算法对加噪,JPEG压缩,低通滤波,中值滤波,几何剪切等攻击具有很好的鲁棒性。关键词: DWT； YIQ色彩空间； 二维条形码英文翻译：Abstract According to the practical color image watermarking technology is not much, especially the embedded watermark signal gray level less algorithm, this paper presents a 2-dimensional DWT color image watermark new algorithm.We select a two-dimensional barcode as embedded watermark,and binary it before segmented into several blocks，then we lossless compression code every sub-block.Finally the image that accordanced by sub-blocks as the watermark.Considering the human visual system (HVS) characteristics, we adopt YIQ color space, the watermarking signal is embedded into the brightness of the carrier images of DWT after the weight Y low-frequency coefficients. The experimental results show that the algorithm is used to add noise, JPEG compression, low pass filtering, median filtering, geometric shear attack has a good robustness, and in color image watermark, color image quality keep well.Keyword:discrete wavelet transform（DWT）；YIQ color space；2-dimensional bar code四、 根据文章写英汉摘要1、 中文摘要: 本文提出一种二维的DWT 彩色图像数字水印的新算法。选取二维条形码作为嵌入的水印,在嵌入之前对其进行二值化,再对结果进行分块并且对各个子块进行无损压缩编码,最后将各个子块合并后的图像按照某种顺序排列作为水印。考虑到人类的视觉系统(HVS)特点,我们采用YIQ色彩空间,将水印信号嵌入到载体图像的亮度分量Y的DWT后的低频系数上。实验结果证明该算法对加噪,JPEG压缩,低通滤波,中值滤波,几何剪切等攻击具有很好的鲁棒性，且在彩色图像中嵌入水印, 彩色图像的质量保持较好。2、 英文摘要:This paper presents a new two-dimensional DWT coloe image watermark algorithm. We select a 2-dimensional barcode as embedded watermark,and binary it before segmented into several blocks，then we lossless compression code every sub-block.Finally the image that accordanced by sub-blocks as the watermark.Considering the human visual system (HVS) characteristics, we adopt YIQ color space, the watermarking signal is embedded into the brightness of the carrier images of DWT after the weight Y low-frequency coefficients. The experimental results show that the algorithm is used to add noise, JPEG compression, low pass filtering, median filtering, geometric shear attack has a good robustness, and in color image watermark, color image quality keep well.