公开(公告)号：US08189856B2

公开(公告)日：2012-05-29

申请号：US12012669

申请日：2008-02-05

Applicant: Chattopadhyay Tanushyam Sibnath ,  Pal Arpan Dipak Kumar

Inventor： Chattopadhyay Tanushyam Sibnath ,  Pal Arpan Dipak Kumar

IPC: G06K9/00

CPC classification number: G06T1/0028 ,  G06T2201/0081 ,  G06T2201/0202

Abstract: A system and apparatus for evaluating the reliability of a watermarking technique for a video sequence, said system and apparatus comprising: a) a calibrating means adapted to calibrate said system and apparatus using a test original video sequence and a test attacked video sequence in compliance with predetermined degrees of quality; b) an attacking means adapted to attack embedded watermark in said video sequence, said attack selected from a group of attacks; and c) an evaluating means including a comparator means for comparing the test original video sequence with test attacked video sequence and the watermark in the test original video sequence with the watermark in the test attacked video sequence to evaluate the reliability of a watermarking technique to give a reliability score.

Abstract translation: 一种用于评估视频序列的水印技术的可靠性的系统和装置，所述系统和装置包括：a）校准装置，其适于使用测试原始视频序列和测试攻击的视频序列校准所述系统和装置， 预定质量; b）适用于攻击所述视频序列中的嵌入水印的攻击手段，所述攻击是从一组攻击中选出的; 以及c）评估装置，包括比较装置，用于将测试原始视频序列与被测试的视频序列和测试原始视频序列中的水印与测试攻击的视频序列中的水印进行比较，以评估水印技术的可靠性，以给出 可靠性分数。

公开(公告)号：US20120027207A1

公开(公告)日：2012-02-02

申请号：US13180534

申请日：2011-07-11

Applicant: Heung Kyu LEE ,  Tae Woo Oh ,  Kyung Su Kim ,  Ji Won Lee ,  Hee Dong Kim

Inventor： Heung Kyu LEE ,  Tae Woo Oh ,  Kyung Su Kim ,  Ji Won Lee ,  Hee Dong Kim

IPC: H04N7/167

CPC classification number: H04N21/8358 ,  G06T1/0028 ,  G06T1/0064 ,  G06T2201/0051 ,  G06T2201/0202

Abstract: A composite masking system and method for improving the invisibility of high-definition video watermarking. The composite masking system includes a watermark generation module, a mask generation module, and watermark embedment means. The watermark generation module generates a basic watermark pattern using a private key, and generate a watermark pattern by repeatedly extending the basic watermark pattern. The mask generation module generates a Noise Visibility Function (NVF) mask using NVF masking means, an adaptive dithering mask using adaptive dithering masking means, and a contour mask using contour masking means. The watermark embedment means generates a composite mask by multiplying the NVF mask, the adaptive dithering mask and the contour mask together, multiplying the composite mask and the extended watermark pattern together, and embedding the result of the second multiplication in the luminance channel of an original image.

Abstract translation: 一种用于提高高清视频水印隐形性的复合掩蔽系统和方法。 复合掩蔽系统包括水印生成模块，掩码生成模块和水印嵌入装置。 水印生成模块使用专用密钥生成基本水印图案，并通过重复地扩展基本水印图案来生成水印图案。 掩模产生模块使用NVF掩蔽装置，使用自适应抖动掩蔽装置的自适应抖动掩模和使用轮廓掩蔽装置的轮廓掩模来生成噪声可见性功能（NVF）掩模。 水印嵌入装置通过将NVF掩模，自适应抖动掩模和轮廓掩模相乘来生成复合掩码，将合成掩码和扩展水印图案相乘，并将第二乘法的结果嵌入原始图像的亮度通道中 图片。

公开(公告)号：US20120008823A1

公开(公告)日：2012-01-12

申请号：US13238306

申请日：2011-09-21

Applicant: Geoffrey B. Rhoads ,  J. Scott Carr

Inventor： Geoffrey B. Rhoads ,  J. Scott Carr

IPC: G06K9/00

CPC classification number: H04N1/32144 ,  G06F17/3002 ,  G06F17/30038 ,  G06T1/0028 ,  G06T1/005 ,  G06T2201/0065 ,  G06T2201/0202 ,  H04N1/32277 ,  H04N2201/327 ,  H04N2201/33357

Abstract: The present invention relates generally to digital watermarking and steganographic data hiding. In one embodiment a method of rendering content to a user is provided. The rendered content includes a digital watermark embedded therein. In another embodiment, digital watermarking is utilized to facilitate purchase or lease of audio or video content over a network or with a remote computer. In still another embodiment, a compression characteristic is determined, and subsequent steganographic embedding is influenced based on the characteristic. Other embodiments are provided as well.

Abstract translation: 本发明一般涉及数字水印和隐写数据隐藏。 在一个实施例中，提供了向用户呈现内容的方法。 呈现的内容包括嵌入其中的数字水印。 在另一个实施例中，利用数字水印来促进通过网络或远程计算机购买或租用音频或视频内容。 在另一个实施例中，确定压缩特性，并且基于特性影响随后的隐写嵌入。 也提供其他实施例。

公开(公告)号：US08009859B2

公开(公告)日：2011-08-30

申请号：US11577030

申请日：2005-10-18

Applicant: Weon Geun Oh ,  Ik Hwan Cho ,  Dong Seok Jeong ,  Hae Gwang Kim

Inventor： Weon Geun Oh ,  Ik Hwan Cho ,  Dong Seok Jeong ,  Hae Gwang Kim

IPC: G06K9/00

CPC classification number: H04N17/00 ,  G06T1/0028 ,  G06T7/42 ,  G06T2201/0202 ,  G06T2207/20048 ,  H04N2005/91335

Abstract: Provided is a method of selecting test stimuli for use in evaluating performance of a video watermarking algorithm, including the steps of: calculating an image complexity rate (ICR) for each of a plurality of test stimulus candidates and classifying them into L (where L is an integer more than or equal to 2) levels based on the calculated ICR values; calculating an energy distribution rate (EDR) for each of the plurality of test stimulus candidates, and classifying them into M (where M is an integer more than or equal to 2) levels based on the calculated EDR values; calculating a motion rate (MR) for each of the plurality of test stimulus candidates and classifying them into N (where N is an integer more than or equal to 2) levels of the calculated MR values; and selecting at least one test stimulus from each of the L levels, M levels, the N levels of the test stimuli, respectively.

Abstract translation: 提供了一种选择用于评估视频水印算法的性能的测试刺激的方法，包括以下步骤：计算多个测试刺激候选中的每一个的图像复杂度（ICR），并将它们分类为L（其中L是 基于所计算的ICR值的大于或等于2）的水平; 计算所述多个测试刺激候选中的每一个的能量分布率（EDR），并且基于所计算的EDR值将它们分类为M（其中M是大于或等于2的整数）级别; 计算多个测试刺激候选中的每一个的运动速率（MR），并将其分类为计算的MR值的N（其中N是大于或等于2的整数）的水平; 以及分别从L个级别，M个级别，N个级别的测试刺激中的每一个中选择至少一个测试刺激。

公开(公告)号：US20110176610A1

公开(公告)日：2011-07-21

申请号：US12737564

申请日：2009-08-19

Applicant: Shan He ,  Jeffrey Adam Bloom ,  Dekun Zou

Inventor： Shan He ,  Jeffrey Adam Bloom ,  Dekun Zou

IPC: H04N7/26 ,  H04N7/32

CPC classification number: F02M35/10144 ,  F02M35/10236 ,  F02M35/10288 ,  F02M35/10321 ,  F02M35/10327 ,  F02M35/10347 ,  F02M35/10354 ,  F02M35/104 ,  G06T1/0028 ,  G06T1/0085 ,  G06T2201/0202 ,  H04N19/159 ,  H04N19/174 ,  H04N19/46 ,  H04N19/467 ,  H04N19/48 ,  H04N19/513

Abstract: A method comprises receiving original encoded video stream as one input, accessing encoded data divided into slices which are further divided into blocks, receiving the list of possible changes or watermarks as another input, accessing at least one block, decoding each slice, setting down each slice, extracting from the list those changes that apply to the at least one block, and constructing propagation maps from inter-prediction or intra-prediction using changes for the at least one block. The method can further comprise decoding luminance data using the propagation maps, comparing the luminance data to a fidelity threshold, and applying possible changes or watermarks to those not exceeding the fidelity threshold.

Abstract translation: 一种方法包括接收原始编码视频流作为一个输入，访问被划分成切片的被编码的数据，进一步被划分成块，接收可能的改变或水印的列表作为另一个输入，访问至少一个块，解码每个切片， 从列表中提取应用于至少一个块的变化，以及使用对于至少一个块的改变来从帧间预测或帧内预测构建传播图。 该方法还可以包括使用传播图来解码亮度数据，将亮度数据与保真度阈值进行比较，以及将可能的改变或水印应用于不超过保真度阈值的那些。

公开(公告)号：US20110158465A1

公开(公告)日：2011-06-30

申请号：US12737829

申请日：2009-08-18

Applicant: Dekun Zou ,  Jeffrey Adam Bloom ,  Shan He

Inventor： Dekun Zou ,  Jeffrey Adam Bloom ,  Shan He

IPC: H04N7/26 ,  G06K9/00

CPC classification number: H04N19/00763 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0053 ,  G06T2201/0061 ,  G06T2201/0202 ,  H04N19/154 ,  H04N19/467 ,  H04N19/593

Abstract: A method comprises accessing changes which can be watermarks in a list for coded data, the changes having an syntax element, an original value and an candidate alternative value; determining for a subset a group of compliant changes from the changes, the complaint changes being compliant with a coding protocol such as a CABAC encoding protocol; and selecting for the subset only compliant changes that result in the subset having only one candidate alternative value for each syntax elements and result in only compliant changes also meeting at least one performance criterion. The method can include determining fidelity, recoverability, or robustness of the watermarks and removing or preventing watermarks from being in the subset based on the fidelity, recoverability, or robustness, wherein fidelity, recoverability, and robustness are performance criteria. The method can include determining at least two performance values for the watermarks, determining some collective metric of the at least two performance values, and removing or preventing watermarks from being in the subset based on the same collective metric.

Abstract translation: 一种方法包括访问可以是用于编码数据的列表中的水印的改变，所述改变具有语法元素，原始值和候选替代值; 根据变化确定子集一组合规变更，投诉变化符合诸如CABAC编码协议之类的编码协议; 以及仅为所述子集选择合规变更，所述变化导致所述子集对于每个语法元素仅具有一个候选替代值，并且仅导致符合变化也符合至少一个性能标准。 该方法可以包括确定水印的保真度，可恢复性或鲁棒性，并且基于保真度，可恢复性或鲁棒性去除或防止水印在子集中，其中保真度，可恢复性和鲁棒性是性能标准。 该方法可以包括确定水印的至少两个性能值，确定至少两个性能值的一些集合度量，以及基于相同的集合度量去除或防止水印在该子集中。

公开(公告)号：US07912244B2

公开(公告)日：2011-03-22

申请号：US12718654

申请日：2010-03-05

Applicant: Mehmet Kivanc Mihcak ,  Oztan Harmanci

Inventor： Mehmet Kivanc Mihcak ,  Oztan Harmanci

IPC: G06K9/00

CPC classification number: G06T1/0028 ,  G06T2201/0202 ,  H04N19/467 ,  H04N21/8358

Abstract: Video fingerprinting using watermarks is described herein. A watermark encoder embeds a watermark into an input video to produce a watermarked video. The watermark encoder can choose particular regions of the video that are sufficiently complex for watermarking. Spatial and temporal complexity analyses can be performed on a per-pixel basis to locate suitable regions of the video. The watermarks can be embedded using a unique codeword associated with a given user. A watermark decoder can receive the watermarked video. In some instances, the watermarked video may have been attacked in some way after being output by the watermark encoder. In these instances, the watermark decoder can extract the watermark from the watermarked video. In turn, the watermark decoder can extract the codeword from the watermark, and compare the extracted codeword to a plurality of known codewords associated with respective users.

Abstract translation: 本文描述了使用水印的视频指纹识别。 水印编码器将水印嵌入到输入视频中以产生水印视频。 水印编码器可以选择视频中具有足够复杂水印的特定区域。 可以在每个像素的基础上执行空间和时间复杂度分析，以定位视频的合适区域。 可以使用与给定用户相关联的唯一码字来嵌入水印。 水印解码器可以接收带水印的视频。 在一些情况下，由水印编码器输出的水印视频可能已经以某种方式被攻击。 在这些情况下，水印解码器可以从加水印的视频中提取水印。 反过来，水印解码器可以从水印中提取码字，并将提取的码字与与各个用户相关联的多个已知码字进行比较。

公开(公告)号：US07817818B2

公开(公告)日：2010-10-19

申请号：US11412210

申请日：2006-04-25

Applicant: Takao Nakamura ,  Hiroshi Ogawa ,  Atsuki Tomioka ,  Youichi Takashima

Inventor： Takao Nakamura ,  Hiroshi Ogawa ,  Atsuki Tomioka ,  Youichi Takashima

IPC: G06K9/00

CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0061 ,  G06T2201/0083 ,  G06T2201/0202 ,  H04N1/32203 ,  H04N1/32208 ,  H04N1/32293 ,  H04N2201/3233 ,  H04N2201/327

Abstract: A method for embedding a watermark into digital data, when the watermark is to be embedded in a digital image, independently changes real number components and imaginary number components of each of coefficient values of a complex watermark coefficient matrix using key, from the watermark to be embedded in the digital image, a step for performing a discrete Fourier inverse transform on the sequence matrix of the changed watermark and generating a watermark pattern; and a step for adding like tiling the water mark pattern to the original image, and generating an embedded image.Further more, a watermark detection method for detecting a watermark from a digital data, a step for separating a block from an arbitrary position on the detected object image, a step for performing a discrete Fourier transform on the block and obtaining a sequence matrix, a step for generating position information for a component that is to be detected and that is specified by the key, a step for detecting a position marker sequence by calculating a phase difference of a sequence by an amount of parallel displacement, for each item of the position information, and extracting offset information which is the amount of parallel displacement when there is agreement between a start point of an embedded watermark and a start point of the block cut from the detected object image, and a step for detecting the embedded watermark cut from the detected object image.

Abstract translation: 一种将水印嵌入数字数据的方法，当将水印嵌入到数字图像中时，使用密钥从水印中独立地改变复数水印系数矩阵的每个系数值的实数分量和虚数分量， 嵌入在数字图像中的步骤，用于对改变的水印的序列矩阵执行离散傅立叶逆变换并产生水印图案; 以及将水印图案拼贴到原始图像上的添加步骤，以及生成嵌入图像。 此外，还提供了一种用于从数字数据中检测水印的水印检测方法，用于从检测到的对象图像上的任意位置分离块的步骤，对该块执行离散付里叶变换并获得序列矩阵的步骤， 用于生成要被检测并由密钥指定的组件的位置信息的步骤，用于通过针对每个位置的项目计算一个序列的平均位移量来检测位置标记序列的步骤 信息，并且提取作为在嵌入水印的开始点与从检测到的对象图像切割的块的开始点之间一致时的平行位移量的偏移信息，以及用于检测从检测到的对象图像切入的嵌入水印的步骤 检测到物体图像。

公开(公告)号：US20100254568A1

公开(公告)日：2010-10-07

申请号：US12729175

申请日：2010-03-22

Applicant: Meng Chen ,  George Bailey

Inventor： Meng Chen ,  George Bailey

IPC: G06K9/00 ,  H04N7/12

CPC classification number: G06T1/0028 ,  G06T2201/0083 ,  G06T2201/0202 ,  H04N19/467 ,  H04N19/89

Abstract: A method and system of communicating visual communication quality information, includes extracting reduced-reference (RR) feature data from visual content, embedding the RR feature data in the visual content; and transmitting the visual content with the embedded RR feature data. Visual communication quality is assessed by receiving visual content which includes visual content data and a first set of embedded RR feature data, retrieving the first set of RR feature data from the visual content data, and generating a second set of RR feature data from the visual content data. The second set of RR feature data corresponds to substantially identical features of the visual content data as that used to generate the first set of RR feature data. The first set of RR feature data is compared to the second first set of RR feature data to determine a quality of the visual content based upon the comparison.

Abstract translation: 一种传达视觉通信质量信息的方法和系统，包括从视觉内容中提取缩减参考（RR）特征数据，将视频内容中的RR特征数据嵌入; 以及使用所嵌入的RR特征数据发送所述可视内容。 可视通信质量通过接收包括可视内容数据和第一组嵌入式RR特征数据的视觉内容来评估，从视觉内容数据中检索第一组RR特征数据，以及从视觉生成第二组RR特征数据 内容数据。 第二组RR特征数据对应于与用于生成第一组RR特征数据的可视内容数据的基本相同的特征。 将第一组RR特征数据与第二组RR特征数据进行比较，以基于该比较来确定视觉内容的质量。

公开(公告)号：US07634031B2

公开(公告)日：2009-12-15

申请号：US11376530

申请日：2006-03-15

Applicant: Peter Georg Baum ,  Walter Voessing

Inventor： Peter Georg Baum ,  Walter Voessing

IPC: H04L27/06

CPC classification number: G06T1/005 ,  G06T1/0028 ,  G06T2201/0065 ,  G06T2201/0202

Abstract: Watermark information (denoted WM) consists of several symbols which are embedded continuously in an audio or a video signal. At decoder site the WM is regained using correlation of the received signal with an m-sequence if Spread Spectrum is used. According to the invention, each WM symbol carries an identification data ID item in addition to its normal payload, and it is already tested in the encoder whether or not the signal is good enough so that the embedded symbol can be recovered at decoder side. If true, it is embedded. If not true, no WM is embedded for the length of one symbol and the test is repeated for the following symbol. The sequence of IDs is known at the encoder which can therefore detect using the ID whether or not a symbol has been skipped.

Abstract translation: 水印信息（表示为WM）由连续嵌入音频或视频信号的几个符号组成。 在解码器位置，如果使用扩频，则使用接收信号与m序列的相关性来重新获得WM。 根据本发明，每个WM符号除了其正常有效载荷之外还携带识别数据ID项目，并且已经在编码器中测试了信号是否足够好，从而可以在解码器侧恢复嵌入的符号。 如果是，它是嵌入的。 如果不是真的，则不会为一个符号的长度嵌入WM，并为以下符号重复测试。 ID的序列在编码器处是已知的，因此可以使用ID来检测符号是否被跳过。