公开(公告)号：US08965038B2

公开(公告)日：2015-02-24

申请号：US13757399

申请日：2013-02-01

Applicant: Qingzhong Liu

Inventor： Qingzhong Liu

IPC: G06K9/00 ,  G06T1/00 ,  H04N7/167

CPC classification number: G06T1/0021 ,  G06T1/005 ,  G06T2201/0052 ,  G06T2201/0065

Abstract: Systems and methods for detecting hidden messages and information in digital files are described. In an embodiment, a method of detecting steganography in a compressed digital image includes extracting neighboring joint density features from the image under scrutiny. Steganography in the image may be detected based on differences in a neighboring joint density feature of the image.

Abstract translation: 描述了用于检测数字文件中的隐藏消息和信息的系统和方法。 在一个实施例中，一种在压缩数字图像中检测隐写术的方法包括从被检查的图像中提取相邻的关节密度特征。 可以基于图像的相邻关节密度特征的差异来检测图像中的隐写术。

公开(公告)号：US20150043890A1

公开(公告)日：2015-02-12

申请号：US14463180

申请日：2014-08-19

Applicant: Digimarc Corporation

Inventor： Sierra K. Modro ,  Tony F. Rodriguez ,  Brian T. MacIntosh

IPC: G06T1/00 ,  H04N5/278 ,  H04N1/32 ,  H04N9/87 ,  H04N9/79

CPC classification number: G06T1/005 ,  G06K9/00577 ,  G06T1/0021 ,  G06T2201/0065 ,  H04N1/32309 ,  H04N1/3232 ,  H04N5/232 ,  H04N5/278 ,  H04N9/7904 ,  H04N9/87 ,  H04N2201/0089

Abstract: Consumer uses of mobile devices and electronic media are changing. Mobile devices include increased computational capabilities, mobile broadband access, better integrated sensors, and higher resolution screens. These enhanced features are driving increased consumption of media such as images, maps, e-books, audio, video, and games. As users become more accustomed to using mobile devices for media, opportunities arise for new digital watermarking usage models. For example, transient media, like images being displayed on screens, can be watermarked to provide a link between mobile devices, extending the reach of digital watermarking. Digital fingerprinting can also be employed. Applications based on these emerging usage models can provide richer user experiences and drive increased media consumption. A great variety of other features and arrangements are also detailed.

Abstract translation: 消费者对移动设备和电子媒体的使用正在发生变化。 移动设备包括增加的计算能力，移动宽带接入，更好的集成传感器和更高分辨率的屏幕。 这些增强功能正在推动媒体的消费量增加，如图像，地图，电子书，音频，视频和游戏。 随着用户变得越来越习惯于使用移动设备进行媒体，新的数字水印使用模式将出现机会。 例如，像屏幕上显示的图像那样的瞬态媒体可以被加水印以提供移动设备之间的链接，从而延伸数字水印的范围。 数字指纹也可以使用。 基于这些新兴使用模式的应用程序可以提供更丰富的用户体验，并提高媒体消耗。 还详细介绍了各种各样的其他功能和安排。

公开(公告)号：US20150036890A1

公开(公告)日：2015-02-05

申请号：US14378901

申请日：2013-02-15

Applicant: Attila Biró ,  Gábor Kristó ,  Piroska Reményi

Inventor： Attila Biró ,  Gábor Kristó ,  Piroska Reményi

IPC: G06K19/06 ,  H04N1/32 ,  G06K9/34 ,  G06T1/00 ,  G06K9/00 ,  G06K9/18

CPC classification number: G06K19/06056 ,  G06K9/00456 ,  G06K9/00577 ,  G06K9/18 ,  G06K9/34 ,  G06K19/06028 ,  G06K19/06037 ,  G06K2009/0059 ,  G06T1/005 ,  G06T2201/0051 ,  G06T2201/0062 ,  G06T2201/0065 ,  G07D7/0056 ,  G07D7/2041 ,  H04N1/32251 ,  H04N1/32325 ,  H04N1/32352

Abstract: The invention relates to a security element applied onto printing substrates (bank-notes, securities, product packagings, identity cards/labels or other similar documents) by printing, comprising a unique identifier as primary information visible to the naked eye and secondary information protecting against copying non-visible to the naked eye. The unique identifier is typically a point code. Said secondary information is represented by a structure with the largest dimension of 2 to 40 microns, and due to printing distortions arising when the security element is applied onto a printing substrate, said secondary information is non-reconstructable from the print of the security element and a statistically analyzable inherent feature is associated to it. The invention also relates to a printed matter with such an inventive security element and to a method to check authenticity of a printed matter with the inventive security element in visible light (380-750 nm).

Abstract translation: 本发明涉及通过印刷应用于印刷基板（纸币，证券，产品包装，身份证/标签或其他类似文件）的安全元件，其包括唯一标识符作为肉眼可见的主要信息，并且防止二次信息 复制不可见肉眼。 唯一标识符通常是点代码。 所述次要信息由最大尺寸为2至40微米的结构表示，并且由于当将安全元件施加到印刷基板上时产生的印刷失真，所述次要信息不可从安全元件的印刷中重建， 统计分析的固有特征与之相关联。 本发明还涉及具有这种本发明的安全元件的印刷品以及用可见光（380-750nm）检测具有本发明的安全元件的印刷品的真实性的方法。

公开(公告)号：US20150016688A1

公开(公告)日：2015-01-15

申请号：US14500421

申请日：2014-09-29

Applicant: Digimarc Corporation

Inventor： Joshua V. Aller

IPC: H04N1/32 ,  G06T1/00 ,  G06T7/00

CPC classification number: G06T1/0092 ,  G06F3/04886 ,  G06Q30/0641 ,  G06T1/005 ,  G06T7/73 ,  G06T2201/0065 ,  G06T2207/10004 ,  G06T2207/30244 ,  H04M1/72522 ,  H04M2250/04 ,  H04M2250/52 ,  H04N1/32144 ,  H04N1/32203 ,  H04N2201/3225 ,  H04N2201/3269

Abstract: A variety of methods and systems involving sensor-equipped portable devices, such as smartphones and tablet computers, are described. One particular embodiment decodes a digital watermark from imagery captured by the device and, by reference to watermark payload data, obtains salient point data corresponding to an object depicted in the imagery. Other embodiments obtain salient point data for an object through use of other technologies (e.g., NFC chips). The salient point data enables the device to interact with the object in a spatially-dependent manner. Many other features and arrangements are also detailed.

Abstract translation: 描述了涉及装有传感器的便携式设备（诸如智能电话和平板计算机）的各种方法和系统。 一个具体实施例从设备捕获的图像中解码数字水印，并通过参考水印有效载荷数据获得与图像中描绘的对象相对应的突出点数据。 其他实施例通过使用其他技术（例如，NFC芯片）来获得对象的突点数据。 突出点数据使得设备能够以空间依赖的方式与对象交互。 还详细介绍了许多其他功能和安排。

公开(公告)号：US08935171B1

公开(公告)日：2015-01-13

申请号：US14476905

申请日：2014-09-04

Applicant: The Telos Alliance

Inventor： Barry Blesser

IPC: G10L19/018

CPC classification number: G06T1/0021 ,  G06K9/52 ,  G06T2201/0065 ,  G06T2207/20056 ,  G06T2207/20224 ,  G10L19/018 ,  H04N19/467

Abstract: A system for providing feedback regarding detectability of a watermark message produced by a watermarking encoder includes a simulation module configured to combine at least one of a watermarked signal or an enhanced watermarked signal with a simulated environment signal that corresponds to an expected listening environment of the at least one of the watermarked signal or the enhanced watermarked signal, and output a simulated environment-modified watermarked signal corresponding to the combination of the at least one of the watermarked signal or the enhanced watermarked signal with the simulated environment signal, and a monitoring module configured to generate a watermark detectability indication based on the simulated environment-modified watermarked signal.

Abstract translation: 一种用于提供关于由水印编码器产生的水印消息的可检测性的反馈的系统，包括：模拟模块，被配置为将水印信号或增强水印信号中的至少一个与对应于所述at 所述水印信号或增强水印信号中的至少一个，并且将与所述水印信号或所述增强水印信号中的所述至少一个的组合相对应的模拟环境修改的水印信号与所述模拟环境信号相输出，以及监视模块 基于模拟的环境修改水印信号生成水印检测指示。

公开(公告)号：US20150010201A1

公开(公告)日：2015-01-08

申请号：US14324161

申请日：2014-07-05

Applicant: THOMSON LICENSING

Inventor： Cesar BURINI ,  Gwenael DOERR ,  Severine BAUDRY

IPC: G06T1/00 ,  H04N13/00

CPC classification number: G06T1/0021 ,  G06T1/005 ,  G06T2201/0051 ,  G06T2201/0065 ,  G06T2201/0083 ,  H04N13/106

Abstract: The invention relates to a method for assessing the presence of a watermark in a video wherein the video comprises at least a sequence of frames. The method comprises for at least one frame among one of the sequences of frames the steps of computing a set of axial cross-correlation values, wherein each axial cross-correlation value corresponds to a correlation between the frame and a reference watermark shifted along a spatial horizontal axis; obtaining a detection score by computing a weighted sum of values output by a function applied to said axial cross-correlation values; assessing the presence of a watermark according to the detection score. Such method is particularly well adapted to the detection of disparity coherent watermark but is compliant with any watermarking technique. A device implementing the method is further disclosed.

Abstract translation: 本发明涉及一种用于评估视频中水印的存在的方法，其中视频包括至少一系列帧。 该方法包括：计算一组轴向互相关值的步骤之一的帧序列之一中的至少一个帧，其中每个轴向互相关值对应于沿着空间的帧和参考水印之间的相关性 横轴; 通过计算由应用于所述轴向互相关值的函数输出的值的加权和来获得检测分数; 根据检测分数评估水印的存在。 这种方法特别适用于视差相干水印的检测，但符合任何水印技术。 进一步公开了实现该方法的装置。

公开(公告)号：US08923548B2

公开(公告)日：2014-12-30

申请号：US13288945

申请日：2011-11-03

Applicant: Rade Petrovic ,  Venkatraman Atti

Inventor： Rade Petrovic ,  Venkatraman Atti

IPC: G06K9/00 ,  G06K9/62 ,  G06K9/68 ,  G06T1/00

CPC classification number: G06K9/6206 ,  G06K9/6255 ,  G06K9/6807 ,  G06T1/0071 ,  G06T2201/0065

Abstract: Methods, devices and computer program products facilitate the extraction of embedded watermarks in the presence of content distortions. Distortion of the content is estimated using two or more detected watermarks with an associated probability of false detection that is above a desired level. The estimated content distortion is used to obtain pre-distorted synchronization templates and to reevaluate the detected watermarks. The use of pre-distorted synchronization templates results in obtaining better estimations of content distortion, and improved reliability of watermark detections.

Abstract translation: 方法，设备和计算机程序产品有助于在存在内容失真的情况下提取嵌入的水印。 使用具有高于期望水平的相关联的错误检测概率的两个或更多个检测到的水印估计内容的失真。 使用估计的内容失真来获得预失真的同步模板并重新评估检测到的水印。 使用预失真的同步模板可以获得更好的内容失真估计，并提高水印检测的可靠性。

公开(公告)号：US20140380493A1

公开(公告)日：2014-12-25

申请号：US14317591

申请日：2014-06-27

Applicant: NBCUniversal Media, LLC

Inventor： Zhaohui Harry Sun ,  Catherine Mary Graichen ,  Corey Nicholas Bufi ,  Anthony James Hoogs ,  Aaron Shaw Markham, SR. ,  Budhaditya Deb ,  Roderic Greene Collins ,  Michael Shane Wilkinson ,  Anthony Christopher Anderson ,  Jenny Marie Weisenberg Williams

IPC: G06F21/16

CPC classification number: G06F21/16 ,  G06T1/005 ,  G06T1/0085 ,  G06T2201/0065 ,  G06T2201/0081 ,  H04N1/32144

Abstract: A method and system for identifying a source of a copied work that in one embodiment includes obtaining at least some portions of a reference work, collecting at least some portions of the suspect work, matching the suspect work with the reference work, wherein the matching includes temporally aligning one or more frames of the reference work and the suspect work, spatially aligning frames of the reference work and the suspect work, and detecting forensic marks in the suspect work by spatiotemporal matching with the reference work.

Abstract translation: 一种用于识别复制作品的源的方法和系统，其在一个实施例中包括获得参考作品的至少一些部分，收集可疑作品的至少一部分，将可疑作品与参考作品相匹配，其中匹配包括 在时间上对齐参考作品的一个或多个帧和可疑作品，空间对齐参考作品的框架和可疑作品，并通过与参考作品的时空匹配来检测可疑作品中的法医标记。

公开(公告)号：US08891815B2

公开(公告)日：2014-11-18

申请号：US13514108

申请日：2010-12-08

Applicant: Naoto Hanyu ,  Hiroshi Fukui ,  Kenichi Sakuma ,  Takakuni Douseki ,  Kazuma Kitamura

Inventor： Naoto Hanyu ,  Hiroshi Fukui ,  Kenichi Sakuma ,  Takakuni Douseki ,  Kazuma Kitamura

IPC: G06K9/00 ,  H04N1/32 ,  G06T1/00

CPC classification number: H04N1/32203 ,  G06T1/005 ,  G06T2201/0051 ,  G06T2201/0065 ,  H04N1/32229

Abstract: An invisible information embedding apparatus for embedding invisible information at a position in an obtained image includes an image analysis unit configured to obtain object information and positional information of an object included in the image, an embedding target image determining unit configured to determine whether the image is an embedding target based on the object information obtained by the image analysis unit, and an image synthesizing unit configured to combine the image with the invisible information based on the determination result of the embedding target image determining unit.

Abstract translation: 一种用于在所获得的图像中的位置处嵌入不可见信息的不可见信息嵌入装置包括：图像分析单元，被配置为获取对象信息和包括在图像中的对象的位置信息;嵌入目标图像确定单元，被配置为确定图像是否是 基于由图像分析单元获得的对象信息的嵌入目标，以及基于嵌入目标图像确定单元的确定结果将图像与不可见信息组合的图像合成单元。

公开(公告)号：US20140233730A1

公开(公告)日：2014-08-21

申请号：US14258237

申请日：2014-04-22

Applicant: Mr. Scott A. Moskowitz

Inventor： Scott A. Moskowitz

IPC: H04L9/14

CPC classification number: H04L9/14 ,  G06T1/0028 ,  G06T1/005 ,  G06T1/0057 ,  G06T1/0064 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0053 ,  G06T2201/0061 ,  G06T2201/0063 ,  G06T2201/0065 ,  G06T2201/0083 ,  H04L9/0819 ,  H04L2209/04 ,  H04L2209/043 ,  H04L2209/046 ,  H04N1/3216 ,  H04N1/32187 ,  H04N1/32309 ,  H04N2201/3233 ,  H04N2201/324

Abstract: Multiple transform utilization and applications for secure digital watermarking. In one embodiment of the present invention, digital blocks in digital information to be protected are transformed into the frequency domain using a fast Fourier transform. A plurality of frequencies and associated amplitudes are identified for each of the transformed digital blocks and a subset of the identified amplitudes is selected for each of the digital blocks using a primary mask from a key. Message information is selected from a message using a transformation table generated with a convolution mask. The chosen message information is encoded into each of the transformed digital blocks by altering the selected amplitudes based on the selected message information.

Abstract translation: 多变换利用和安全数字水印应用。 在本发明的一个实施例中，要保护的数字信息中的数字块使用快速傅立叶变换被变换到频域。 为每个变换的数字块识别多个频率和相关联的幅度，并且使用来自密钥的主掩模为每个数字块选择所识别的幅度的子集。 从使用卷积掩码生成的变换表的消息中选择消息信息。 所选择的消息信息通过基于所选择的消息信息改变所选择的幅度而被编码到每个变换的数字块中。