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    Digital watermarks
    81.
    发明授权
    Digital watermarks 有权
    数字水印

    公开(公告)号：US08036419B2

    公开(公告)日：2011-10-11

    申请号：US12575168

    申请日：2009-10-07

    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。

    Encoding and detecting apparatus
    82.
    发明授权
    Encoding and detecting apparatus 有权
    编码和检测装置

    公开(公告)号：US07844052B2

    公开(公告)日：2010-11-30

    申请号：US11263373

    申请日：2005-10-31

    Applicant: Daniel Warren Tapson

    Inventor： Daniel Warren Tapson

    IPC: H04K1/04

    CPC classification number: G06T1/0028 ,  G06F21/10 ,  G06F2221/0737 ,  G06F2221/2107 ,  G06T1/005 ,  G06T2201/0052 ,  G06T2201/0065 ,  G06T2201/0202 ,  H04L9/0662 ,  H04L9/0869 ,  H04L9/0891 ,  H04L63/0428 ,  H04L2209/608

    Abstract: An encoding data processing apparatus is arranged to generate a marked copy of an item of material by introducing at least one code word into a copy of the material item, the code word being arranged to identify a payload data word. The encoding apparatus comprises an encryption circuit operable to receive a payload encryption key and to receive the payload data word, and to encrypt the payload data word using the payload encryption key. A pseudo random number generator receives the encrypted payload data and a finger print key and generates the code word having a plurality of code word coefficients using the encrypted payload as a seed for the pseudo random number generator and the finger print key. A combiner combines the code word with the material to form the marked copy of the material item. The encoding apparatus may form part of a media terminal for marking material items with the code words, when the material items are to be reproduced. A more secure system for reproducing watermarked material can be formed using the encoding apparatus in which the payload data is encrypted and used as a seed for the pseudo random number generator with the finger print key to generate the code word coefficients. The code word is thereby generated from a finger print key and an encrypted seed, which provides an improved level of security against an attack aimed at compromising correction detection of a code word in a mark material item.

    Abstract translation: 编码数据处理装置被配置为通过将至少一个代码字引入到材料项目的副本中来生成物料项目的标记副本，该代码字被安排为识别有效载荷数据字。 编码装置包括可操作以接收有效载荷加密密钥并接收有效载荷数据字的加密电路，并且使用有效载荷加密密钥加密有效载荷数据字。 伪随机数生成器接收加密的有效载荷数据和指纹密钥，并且使用加密的有效载荷生成具有多个码字系数的码字作为伪随机数发生器和指纹密钥的种子。 组合器将代码字与材料组合以形成材料项目的标记副本。 当要再现物料时，编码装置可以形成用于用代码字标记物料的介质终端的一部分。 可以使用其中有效载荷数据被加密并用作具有指纹密钥的伪随机数发生器的种子的编码装置来形成用于再现水印材料的更安全的系统，以生成码字系数。 因此，代码字由指纹密钥和加密的种子生成，这为针对危害标记材料项目中的代码字的校正检测的攻击提供了改进的安全级别。

    Watermark signal generating apparatus
    83.
    发明授权
    Watermark signal generating apparatus 失效
    水印信号发生装置

    公开(公告)号：US07797542B2

    公开(公告)日：2010-09-14

    申请号：US12510434

    申请日：2009-07-28

    Applicant: Ryuki Tachibana ,  Ryo Subihara

    Inventor： Ryuki Tachibana ,  Ryo Subihara

    IPC: H04L9/32

    CPC classification number: H04N1/32144 ,  G06T1/0028 ,  G06T1/0085 ,  G06T2201/0052 ,  G06T2201/0202 ,  H04N1/32229

    Abstract: An apparatus 10 for generating watermark signals to be embedded as a digital watermark in real-time contents includes: input means 12 for inputting the real-time contents; an input buffer 14 for storing the real-time contents; generation means for generating watermark signals corresponding to predicted intensities of the real-time contents from divided real-time contents; and an output buffer 18 for storing the generated watermark signals to be outputted. The generation means is configured by including prediction means 16 for predicting intensities of the watermark signals; control means 20 for controlling embedding by use of a message to be embedded as the digital watermark in the divided real-time contents; and means 22 for generating the watermark signals to be outputted.

    Abstract translation: 用于产生要作为数字水印嵌入的水印信号的装置10包括：用于输入实时内容的输入装置12; 用于存储实时内容的输入缓冲器14; 用于从分割的实时内容产生对应于实时内容的预测强度的水印信号的生成装置; 以及用于存储要输出的所生成的水印信号的输出缓冲器18。 生成装置被配置为包括用于预测水印信号的强度的预测装置16; 控制装置20，用于通过使用待分割的实时内容中作为数字水印嵌入的消息来控制嵌入; 以及用于产生要输出的水印信号的装置22。

    Encoding apparatus and method
    86.
    发明授权
    Encoding apparatus and method 失效
    编码装置及方法

    公开(公告)号：US07792322B2

    公开(公告)日：2010-09-07

    申请号：US11261555

    申请日：2005-10-28

    Applicant: Daniel Warren Tapson

    Inventor： Daniel Warren Tapson

    IPC: G06K9/00 ,  G06K9/36 ,  G06K9/46 ,  G06K15/00 ,  H04N1/40

    CPC classification number: G06T1/0028 ,  G06T2201/0052 ,  G06T2201/0202

    Abstract: An encoding data processing apparatus is arranged to generate a marked copy of an image by introducing a code word into a copy of the image. The apparatus comprises a code word generator operable to generate the code word. The encoding apparatus includes an image perception analyser and a strength adapter. The image perception analyser is operable to receive the image and to generate weighting factors. A combiner is operable to combine the weighted code word with the image. The image perception analyser includes a contrast masking engine, a smoothness compensation engine and a compensation combiner. The weighting factor has an effect of reducing the code word coefficients for image parts having lower relative contrast measures. A compensation combiner is operable to combine the compensation factors with the weighting factor. The likelihood of a code word being perceivable when the code word is combined with an image is reduced.

    Abstract translation: 编码数据处理装置被布置为通过将代码字引入图像的副本来生成图像的标记副本。 该装置包括可操作以产生码字的码字发生器。 编码装置包括图像感知分析器和强度适配器。 图像感知分析器可操作以接收图像并产生加权因子。 组合器可操作以将加权码字与图像组合。 图像感知分析器包括对比度掩蔽引擎，平滑度补偿引擎和补偿组合器。 加权因子具有减少具有较低相对对比度测量的图像部分的码字系数的效果。 补偿组合器可操作以将补偿因子与加权因子组合。 当代码字与图像组合时，代码字可感知的可能性降低。

    Visual perception model for hi-fidelity image watermarking
    88.
    发明授权
    Visual perception model for hi-fidelity image watermarking 有权
    高保真图像水印的视觉感知模型

    公开(公告)号：US07720253B2

    公开(公告)日：2010-05-18

    申请号：US11532040

    申请日：2006-09-14

    Applicant: Shan He ,  Darko Kirovski

    Inventor： Shan He ,  Darko Kirovski

    IPC: G06K9/00 ,  H04N1/40 ,  H04L9/32

    CPC classification number: G06T1/0028 ,  G06T2201/0202

    Abstract: Exemplary systems and methods implement an exemplary visual perception model. This model can be implemented in such applications as imaging, compression, denoising, annotation of hi-fidelity images, etc. In one implementation a perceptual filter estimates an entropy statistic and a standard deviation statistic associated with each pixel of an image, then mixes the entropy statistic and the standard deviation statistic to map an estimation of human perceptual tolerance to noise or alteration in parts of the image. In one application, metadata may be added to an image via a system of synergistic watermarks, in which the watermarks strengthen each other and are placed according to the noise tolerance of the pixels in order to maintain hi-fidelity of the image.

    Abstract translation: 示例性系统和方法实现示例性视觉感知模型。 该模型可以在诸如成像，压缩，去噪，高保真图像的注释等应用中实现。在一个实现中，感知滤波器估计与图像的每个像素相关联的熵统计量和标准偏差统计量，然后将 熵统计量和标准偏差统计量来映射人类感知容忍度对图像部分噪声或变化的估计。 在一个应用中，可以通过协同水印系统将元数据添加到图像中，其中水印彼此加强并且根据像素的噪声容限被放置，以便保持图像的高保真度。

    REVERSIBLE DATA HIDING
    90.
    发明申请
    REVERSIBLE DATA HIDING 有权
    可逆数据隐藏

    公开(公告)号：US20100098287A1

    公开(公告)日：2010-04-22

    申请号：US12253825

    申请日：2008-10-17

    Applicant: Guorong Xuan ,  Yun-Qing Shi

    Inventor： Guorong Xuan ,  Yun-Qing Shi

    IPC: G06K9/00

    CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0083 ,  G06T2201/0202 ,  G06T2201/0203

    Abstract: Methods for reversible data hiding are disclosed herein. These methods may be applied to images for reversible image data hiding. In one embodiment, a method for reversible data hiding comprises identifying carrier data having a plurality of components and establishing prediction-errors for each of the components of the carrier data. A first threshold and a second threshold are established. The prediction-errors of the components are evaluated against the first threshold to identify components for possible hiding. The components identified for possible hiding are evaluated against the second threshold to identify components for hiding. To-be embedded data is embedded into the carrier data identified for hiding to create marked data. The marked data is evaluated for overflow or underflow. If overflow or underflow is detected, histogram modification is performed. Marked data is then established.

    Abstract translation: 本文公开了可逆数据隐藏的方法。 这些方法可以应用于可逆图像数据隐藏的图像。 在一个实施例中，一种用于可逆数据隐藏的方法包括：识别具有多个分量的载波数据，并为载波数据的每个分量建立预测误差。 建立第一阈值和第二阈值。 根据第一阈值评估组件的预测误差，以识别可能隐藏的组件。 针对第二个阈值评估可识别的可能隐藏的组件以识别隐藏的组件。 要嵌入的数据嵌入到识别为隐藏以创建标记数据的载体数据中。 对标记数据进行溢出或下溢。 如果检测到溢出或下溢，则执行直方图修改。 然后建立标记数据。

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