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    LFSR watermark system
    61.
    发明授权
    LFSR watermark system 有权
    LFSR水印系统

    公开(公告)号：US09208352B2

    公开(公告)日：2015-12-08

    申请号：US14176400

    申请日：2014-02-10

    Applicant: Cisco Technology Inc.

    Inventor： Yaron Sella ,  Harel Cain ,  Michal Devir

    IPC: G06F21/62 ,  G06F21/64

    CPC classification number: G06F21/64 ,  G06F21/10 ,  G06F21/6209 ,  G06T1/005 ,  G06T2201/0063 ,  G09C5/00 ,  H04L9/3226 ,  H04L9/3236

    Abstract: In one embodiment, a system including a processor is operative to receive a content item including a watermark encoding a series of data values of an output stream of a linear feedback shift register initialized with a seed including an information element and an assurance value, the shift register having a plurality of states each including a first and second value, identify at least part of the watermark in the content item, extract at least some of the data values from the at least part of the identified watermark, process at least some of the extracted data values yielding the initial state of shift register, and authenticate the first value of the initial state using the second value of the initial state in order to confirm that the first value is indeed the information element included in the seed processed by the shift register.

    Abstract translation: 在一个实施例中，包括处理器的系统可操作以接收内容项目，该内容项目包括编码由包括信息元素和保证值的种子初始化的线性反馈移位寄存器的输出流的一系列数据值的水印， 具有多个状态的寄存器，每个状态包括第一和第二值，识别内容项中的水印的至少一部分，从所识别的水印的至少一部分中提取至少一些数据值，处理至少一些 提取的数据值产生移位寄存器的初始状态，并且使用初始状态的第二值来认证初始状态的第一值，以便确认第一值确实是包括在由移位寄存器处理的种子中的信息元素 。

    Method for protecting digital content against minority collusion attacks
    64.
    发明授权
    Method for protecting digital content against minority collusion attacks 有权
    保护数字内容免受少数群体串通攻击的方法

    公开(公告)号：US08995706B2

    公开(公告)日：2015-03-31

    申请号：US12998185

    申请日：2008-09-26

    Applicant: Wan-Yi Lin ,  Shan He ,  Jeffrey Adam Bloom

    Inventor： Wan-Yi Lin ,  Shan He ,  Jeffrey Adam Bloom

    IPC: G06K9/00 ,  G06T1/00 ,  H03M13/00 ,  H04N1/32 ,  H03M13/15

    CPC classification number: G06T1/005 ,  G06T2201/0063 ,  H03M13/1515 ,  H03M13/63 ,  H04N1/32144 ,  H04N2201/3236 ,  H04N2201/3269 ,  H04N2201/3284

    Abstract: A method and system of detecting colluders conducting a collusion attack including a minority-type collusion attack on a digital product includes the generation of codewords used as watermarks in the digital product. The inner code of the codewords is generated using permutations of rows in a Hadamard matrix and concatenating them together. A typical outer code of the codeword is the Reed Solomon code. An adaptive detector is able to accurately detect one of three or more colluders of a minority-type attack. Prior art schemes using an error correcting code-based watermarking mechanism with an inner code fail to detect colluders with a minority-type collusion attack which includes three colluders.

    Abstract translation: 在数字产品上进行包括少数型串谋攻击的共谋攻击检测共谋者的方法和系统包括在数字产品中生成用作水印的码字。 使用Hadamard矩阵中的行排列来生成码字的内部代码，并将它们连接在一起。 码字的典型外码是里德所罗门码。 一个自适应检测器能够准确地检测少数型攻击的三个或更多个共谋者中的一个。 使用具有内部代码的基于纠错码的水印机制的现有技术方案不能检测包含三个共谋者的少数型串谋攻击的共谋者。

    Method for constructing inner codes for anti-collusion forensic code for watermarking digital content
    65.
    发明授权
    Method for constructing inner codes for anti-collusion forensic code for watermarking digital content 有权
    用于构建用于水印数字内容的反串联取证代码的内部代码的方法

    公开(公告)号：US08745402B2

    公开(公告)日：2014-06-03

    申请号：US12998143

    申请日：2008-09-26

    Applicant: Wan-yi Lin ,  Shan He ,  Jeffrey Adam Bloom

    Inventor： Wan-yi Lin ,  Shan He ,  Jeffrey Adam Bloom

    IPC: G06F21/00 ,  G06T1/00

    CPC classification number: G06T1/005 ,  G06T2201/0051 ,  G06T2201/0063

    Abstract: A method and apparatus are described including generating a unique code for each of a plurality of users using a plurality of symbols, generating a plurality of codes representing the plurality of symbols, substituting the plurality of codes into the unique code for each of the plurality of users, permuting the code resulting from the substitution to produce a codeword for each of the plurality of users and embedding the codeword into digital content. The second generating act further includes generating a string of first symbols followed by second symbols, wherein the first symbols are all ones and the second symbols are all negative ones, wherein a number of first symbols is equal to a number of the second symbols, and wherein if a length of the first symbols followed by the second symbols is less than a length of the code, then the first symbols followed by the second symbols are repeated until the code length is filled.

    Abstract translation: 描述了一种方法和装置，包括使用多个符号为多个用户中的每一个生成唯一的代码，生成表示多个符号的多个代码，将多个代码替换为多个代码中的每一个的唯一代码 用户，将由替换产生的代码置换为多个用户中的每一个用户产生码字，并将码字嵌入数字内容。 第二生成动作还包括生成一串第一符号，后跟第二符号，其中第一符号全为1，第二符号全为负数，其中多个第一符号等于第二符号的数目，以及 其中如果所述第二符号之后的所述第一符号的长度小于所述代码的长度，则重复所述第二符号后面的所述第一符号直到所述代码长度被填充。

    FORENSIC MARKING USING A COMMON CUSTOMIZATION FUNCTION
    66.
    发明申请
    FORENSIC MARKING USING A COMMON CUSTOMIZATION FUNCTION 有权
    使用通用自定义功能的威信标记

    公开(公告)号：US20140029786A1

    公开(公告)日：2014-01-30

    申请号：US14038621

    申请日：2013-09-26

    Applicant: Verance Corporation

    Inventor： Joseph M. Winograd

    IPC: G06T1/00

    CPC classification number: G06F21/16 ,  G06F2221/0737 ,  G06T1/0021 ,  G06T1/005 ,  G06T1/0085 ,  G06T2201/0063 ,  H04L9/08

    Abstract: Methods, systems, and apparatus are disclosed which enable flexible insertion of forensic watermarks into a digital content signal using a common customization function. The common customization function flexibly employs a range of different marking techniques that are applicable to a wide range of forensic marking schemes. These customization functions are also applicable to pre-processing and post-processing operations that may be necessary for enhancing the security and transparency of the embedded marks, as well as improving the computational efficiency of the marking process. The common customization function supports a well-defined set of operations specific to the task of forensic mark customization that can be carried out with a modest and preferably bounded effort on a wide range of devices. This is accomplished through the use of a generic transformation technique for use as a “customization” step for producing versions of content forensically marked with any of a multiplicity of mark messages.

    Abstract translation: 公开了使用公共定制功能将法医水印灵活地插入到数字内容信号中的方法，系统和装置。 通用定制功能灵活采用一系列不同的标记技术，适用于广泛的法医标记方案。 这些定制功能也适用于增强嵌入式标记的安全性和透明度所必需的预处理和后处理操作，以及提高标记过程的计算效率。 通用定制功能支持特定于法医标记定制任务的明确定义的一组操作，可以在广泛的设备上以适度且优选的限制性努力来执行。 这是通过使用通用转换技术来实现的，作为用于产生用多个标记消息中的任何一个标记的内容的版本的“定制”步骤。

    Forensic marking using a common customization function
    68.
    发明授权
    Forensic marking using a common customization function 失效
    使用通用定制功能的取证标记

    公开(公告)号：US08549307B2

    公开(公告)日：2013-10-01

    申请号：US13220526

    申请日：2011-08-29

    Applicant: Joseph M. Winograd

    Inventor： Joseph M. Winograd

    IPC: H04L29/06

    CPC classification number: G06F21/16 ,  G06F2221/0737 ,  G06T1/0021 ,  G06T1/005 ,  G06T1/0085 ,  G06T2201/0063 ,  H04L9/08

    Abstract: Methods, systems, and apparatus are disclosed which enable flexible insertion of forensic watermarks into a digital content signal using a common customization function. The common customization function flexibly employs a range of different marking techniques that are applicable to a wide range of forensic marking schemes. These customization functions are also applicable to pre-processing and post-processing operations that may be necessary for enhancing the security and transparency of the embedded marks, as well as improving the computational efficiency of the marking process. The common customization function supports a well-defined set of operations specific to the task of forensic mark customization that can be carried out with a modest and preferably bounded effort on a wide range of devices. This is accomplished through the use of a generic transformation technique for use as a “customization” step for producing versions of content forensically marked with any of a multiplicity of mark messages.

    Abstract translation: 公开了使用公共定制功能将法医水印灵活地插入到数字内容信号中的方法，系统和装置。 通用定制功能灵活采用一系列不同的标记技术，适用于广泛的法医标记方案。 这些定制功能也适用于增强嵌入式标记的安全性和透明度所必需的预处理和后处理操作，以及提高标记过程的计算效率。 通用定制功能支持特定于法医标记定制任务的明确定义的一组操作，可以在广泛的设备上以适度且优选的限制性努力来执行。 这是通过使用通用转换技术来实现的，作为用于产生用多个标记消息中的任何一个标记的内容的版本的“定制”步骤。

    DIGITAL WATERMARK EMBEDDING APPARATUS AND METHOD, AND DIGITAL WATERMARK DETECTING APPARATUS AND METHOD
    69.
    发明申请
    DIGITAL WATERMARK EMBEDDING APPARATUS AND METHOD, AND DIGITAL WATERMARK DETECTING APPARATUS AND METHOD 有权
    数字水印嵌入装置及方法及数字水印检测装置及方法

    公开(公告)号：US20130136296A1

    公开(公告)日：2013-05-30

    申请号：US13659490

    申请日：2012-10-24

    Applicant: FUJITSU LIMITED

    Inventor： Shohei Nakagata ,  Taizo Anan

    IPC: G06K9/00

    CPC classification number: G06T1/005 ,  G06T2201/0063 ,  H03M13/09 ,  H03M13/11 ,  H03M13/1515 ,  H04L9/0869 ,  H04L2209/608

    Abstract: A digital watermark embedding apparatus is disclosed. A first codeword including a bit sequence of digital watermark information is generated. A cyclic shift sequence is generated based on the digital watermark information. A second codeword is generated by cyclically shifting the first codeword based on the generated cyclic shift sequence. The generated second codeword is embedded in contents.

    Abstract translation: 公开了一种电子水印嵌入装置。 生成包括数字水印信息的位序列的第一码字。 基于数字水印信息生成循环移位序列。 通过基于所生成的循环移位序列循环移位第一码字来产生第二码字。 所生成的第二码字被嵌入到内容中。

    SYSTEM FOR EMBEDDING DATA
    70.
    发明申请
    SYSTEM FOR EMBEDDING DATA 有权
    嵌入数据系统

    公开(公告)号：US20120155755A1

    公开(公告)日：2012-06-21

    申请号：US13327002

    申请日：2011-12-15

    Applicant: Zeev GEYZEL ,  Leonid DORRENDORF

    Inventor： Zeev GEYZEL ,  Leonid DORRENDORF

    IPC: G06K9/34

    CPC classification number: G06T1/005 ,  G06T2201/0051 ,  G06T2201/0063 ,  G06T2201/0065 ,  G06T2201/0081

    Abstract: A method and system including capturing a video stream including embedded data, segmenting the video stream into a plurality of video frames included therein, locating a color mass, denoted C′, for each color element of every individual video frame of the plurality of video frames by summing color value coordinates for a given color element included in the individual video frame, locating a color mass, denoted C, for each color element of a corresponding individual video frame, the corresponding individual video frame corresponding a video frame which does not include embedded data, subtracting C from C′, and deriving, from a result of the subtraction, a value of a first coordinate and a second coordinate, the first coordinate and the second coordinate including coordinates of a vector, the vector corresponding to a string of bits including information embedded in the individual video frame. Related apparatus, methods and systems are also described.

    Abstract translation: 一种方法和系统，包括捕获包括嵌入数据的视频流，将所述视频流分割成包括在其中的多个视频帧，为所述多个视频帧的每个单独视频帧的每个颜色元素定位表示为C'的色质 通过对包括在各个视频帧中的给定颜色元素的颜色值坐标求和，为相应的单独视频帧的每个色彩元素定位表示为C的色质，相应的单独视频帧对应于不包括嵌入的视频帧 数据，从C'中减去C，并从减法的结果导出第一坐标和第二坐标的值，第一坐标和第二坐标包括向量的坐标，对应于位串的向量 包括嵌入在个别视频帧中的信息。 还描述了相关装置，方法和系统。

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