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1. 发明授权

US07454033B2 Quantization-based data hiding employing calibration and locally adaptive quantization 有权
标题翻译：基于量化的数据隐藏采用校准和局部自适应量化
公开(公告)号：US07454033B2
公开(公告)日：2008-11-18
申请号：US10469474
申请日：2002-03-22
申请人： John Stach , Hugh L. Brunk , Ravi K. Sharma
发明人： John Stach , Hugh L. Brunk , Ravi K. Sharma
IPC分类号： H04K1/00
CPC分类号： G10L21/00 , G06T1/0064 , G06T2201/0052 , G10L19/018 , H04N1/32144 , H04N1/32154 , H04N1/32352
摘要： Certain forms of distortion make it difficult to recover hidden data embedded in an audio or image signal by quanitzation techniques. To compensate for this distortion, an embedded data reader analyzes a statistical distribution (e.g., a histogram) of feature samples (124) in an audio or image signal suspected of having hidden auxiliary data to derive an estimate of quantizers used to encode a reference signal (126). The estimated quantizers then recover the reference signal (126), and the reader uses the reference signal (126) to determine and compensate for geometric or temporal distortion, like spatial scaling and rotation of image data, and time scale and speed changes of audio data. After compensating for such distortion, the reader can then more accurately recover hidden message data using quantization techniques to extract the message. The reference signal (126) is preferably repeated in blocks of the image or audio data to enable synchronization at many points in an image or audio data stream. An adaptive embedding and reading technique is used to adaptively define the quantization bins for regions of a host media signal based on signal statistics for each of the regions.
摘要翻译：某些形式的失真使得难以通过Quanitzation技术恢复嵌入在音频或图像信号中的隐藏数据。为了补偿这种失真，嵌入式数据读取器分析疑似具有隐藏辅助数据的音频或图像信号中的特征样本（124）的统计分布（例如，直方图），以导出用于对参考信号进行编码的量化器的估计（126）。估计的量化器然后恢复参考信号（126），并且读取器使用参考信号（126）来确定和补偿几何或时间失真，如图像数据的空间缩放和旋转以及音频数据的时间尺度和速度变化。在补偿这种失真之后，读者可以使用量化技术更准确地恢复隐藏的消息数据以提取消息。参考信号（126）优选地以图像或音频数据的块重复，以使得能够在图像或音频数据流中的许多点处进行同步。基于每个区域的信号统计，使用自适应嵌入和读取技术来自适应地定义主媒体信号区域的量化仓。

2. 发明授权

US06580809B2 Quantization-based data hiding employing calibration and locally adaptive quantization 有权
公开(公告)号：US06580809B2
公开(公告)日：2003-06-17
申请号：US10105013
申请日：2002-03-22
申请人： John Stach , Hugh L. Brunk , Ravi K. Sharma
发明人： John Stach , Hugh L. Brunk , Ravi K. Sharma
IPC分类号： H04K100
CPC分类号： G10L21/00 , G06T1/0064 , G06T2201/0052 , G10L19/018 , H04N1/32144 , H04N1/32154 , H04N1/32352
摘要： A signal embedder hides auxiliary data in a media signal such that the auxiliary data is humanly imperceptible yet recoverable by an automated auxiliary data reader. The embedding method comprises segmenting the media signal into regions, determining statistics for the regions, and adapting quantization bins for each region based on the statistics calculated for the region. To hide auxiliary data in the regions, the method quantizes signal characteristics in the regions into the quantization bins adapted for the regions. The quantization bins correspond to auxiliary data symbols and the signal characteristics are quantized into selected bins depending on the auxiliary data symbol to be embedded in the signal characteristics. A compatible reading method performs a similar adaptive process to define the quantization bins before mapping signal characteristics into the adapted bins to extract the hidden data.

3. 发明授权

US07986807B2 Signal embedding and detection using circular structures in a transform domain of a media signal 有权
标题翻译：在媒体信号的变换域中使用圆形结构的信号嵌入和检测
公开(公告)号：US07986807B2
公开(公告)日：2011-07-26
申请号：US12273423
申请日：2008-11-18
申请人： John Stach , Hugh L. Brunk , Ravi K. Sharma
发明人： John Stach , Hugh L. Brunk , Ravi K. Sharma
IPC分类号： H04K1/00
CPC分类号： G10L21/00 , G06T1/0064 , G06T2201/0052 , G10L19/018 , H04N1/32144 , H04N1/32154 , H04N1/32352
摘要： Machine readable signals embedded in other media signals include a circular structure in a transform domain to facilitate detection. The machine readable signals are not apparent to human observers of rendered media containing the machine readable signals, such as images and documents. A detector captures the media signal, transforms it to the transform domain, and then uses the circular structure in the transform domain to facilitate detection despite rotation of the media signal.
摘要翻译：嵌入在其他媒体信号中的机读信号包括变换域中的圆形结构以便于检测。机器可读信号对于包含机器可读信号（例如图像和文档）的渲染介质的人类观察者来说是不明显的。检测器捕获媒体信号，将其转换为变换域，然后在变换域中使用圆形结构，以便尽管媒体信号旋转，以便于检测。

4. 发明授权

US08144368B2 Automated methods for distinguishing copies from original printed objects 有权
标题翻译：用于区分副本和原始打印对象的自动方法
公开(公告)号：US08144368B2
公开(公告)日：2012-03-27
申请号：US10723181
申请日：2003-11-26
申请人： Tony F. Rodriguez , Alastair M. Reed , Ravi K. Sharma , Osama M. Alattar , Brett T. Hannigan , Kenneth L. Levy , Hugh L. Brunk , Geoffrey B. Rhoads , Ammon E. Gustafson
发明人： Tony F. Rodriguez , Alastair M. Reed , Ravi K. Sharma , Osama M. Alattar , Brett T. Hannigan , Kenneth L. Levy , Hugh L. Brunk , Geoffrey B. Rhoads , Ammon E. Gustafson
IPC分类号： H04N1/40 , G06K9/00
CPC分类号： H04N1/32149 , B29C45/1418 , B42D25/29 , G06T1/0021 , G06T7/0002 , G06T2201/0064 , G06T2207/30144 , G07D7/0034 , G07D7/004 , H04N1/00002 , H04N1/00005 , H04N1/00037 , H04N1/00092 , H04N1/32208 , H04N1/32219 , H04N1/32261 , H04N1/32304 , H04N1/32309 , H04N2201/3205 , H04N2201/3207 , H04N2201/3226 , H04N2201/3233 , H04N2201/3239 , H04N2201/327 , H04N2201/3271
摘要： This disclosure describes methods for using embedded auxiliary signals in documents for copy detection and other applications. In on application, the auxiliary signal is formed as an array of elements selected from a set of print structures with properties that change differently in response to copy operations. These changes in properties of the print structures that carry the embedded auxiliary signal are automatically detectable. For example, the changes make the embedded auxiliary signal more or less detectable. The extent to which the auxiliary data is detected forms a detection metric used in combination with one or more other metrics to differentiate copies from originals. Examples of sets of properties of the print structures that change differently in response to copy operations include sets of colors (including different types of inks), sets of screens or dot structures that have varying dot gain, sets of structures with different aliasing effects, etc. Robust and fragile watermarks are used in Image Replacement Documents for a variety of applications. Digital watermarks act as on-board mediators in authentication of a variety of printed documents. Finally, digital watermarks are used to help manage quality of the scanners used in imaging systems.
摘要翻译：本公开描述了在用于复制检测和其他应用的文档中使用嵌入式辅助信号的方法。在应用中，辅助信号被形成为从一组打印结构中选择的元素的阵列，其具有响应于复制操作而改变的属性。携带嵌入式辅助信号的打印结构的这些属性变化可以自动检测。例如，这些改变使得嵌入式辅助信号或多或少被检测出来。检测辅助数据的程度形成与一个或多个其他度量结合使用的检测度量，以区分副本与原件。对于复制操作而改变不同的打印结构的属性集合的示例包括具有不同的点增益的颜色（包括不同类型的墨水），屏幕或点结构的集合，具有不同混叠效果的结构集合等图像替换文档中使用了强大而脆弱的水印，用于各种应用。数字水印作为各种印刷文件认证中的板载介质。最后，数字水印用于帮助管理成像系统中使用的扫描仪的质量。

5. 发明授权

US06483927B2 Synchronizing readers of hidden auxiliary data in quantization-based data hiding schemes 有权
标题翻译：在基于量化的数据隐藏方案中同步隐藏辅助数据的读取器
公开(公告)号：US06483927B2
公开(公告)日：2002-11-19
申请号：US09895867
申请日：2001-06-28
申请人： Hugh L. Brunk , Ravi K. Sharma
发明人： Hugh L. Brunk , Ravi K. Sharma
IPC分类号： H04K100
CPC分类号： G10L21/00 , G06T1/0064 , G06T2201/0052 , G10L19/018 , H04N1/32144 , H04N1/32154 , H04N1/32352
摘要： Certain forms of distortion make it difficult to recover hidden data embedded in an audio or image signal by quanitzation techniques. To compensate for this distortion, an embedded data reader analyzes a statistical distribution (e.g., a histogram) of feature samples in an audio or image signal suspected of having hidden auxiliary data to derive an estimate of quantizers used to encode a reference signal. The estimated quantizers then recover the reference signal, and the reader uses the reference signal to determine and compensate for geometric or temporal distortion, like spatial scaling and rotation of image data, and time scale and speed changes of audio data. After compensating for such distortion, the reader can then more accurately recover hidden message data using quantization techniques to extract the message. The reference signal is preferably repeated in blocks of the image or audio data to enable synchronization at many points in an image or audio data stream.
摘要翻译：某些形式的失真使得难以通过Quanitzation技术恢复嵌入在音频或图像信号中的隐藏数据。为了补偿这种失真，嵌入式数据读取器分析疑似具有隐藏的辅助数据的音频或图像信号中的特征样本的统计分布（例如，直方图），以导出用于编码参考信号的量化器的估计。估计的量化器然后恢复参考信号，并且读取器使用参考信号来确定和补偿几何或时间失真，如图像数据的空间缩放和旋转以及音频数据的时间尺度和速度变化。在补偿这种失真之后，读者可以使用量化技术更准确地恢复隐藏的消息数据以提取消息。参考信号优选地以图像或音频数据的块重复，以实现图像或音频数据流中的许多点的同步。

6. 发明申请

US20090285446A1 Signal Embedding and Detection using Circular Structures in a Transform Domain of a Media Signal 有权
标题翻译：在媒体信号的变换域中使用圆形结构的信号嵌入和检测
公开(公告)号：US20090285446A1
公开(公告)日：2009-11-19
申请号：US12273423
申请日：2008-11-18
申请人： John Stach , Hugh L. Brunk , Ravi K. Sharma
发明人： John Stach , Hugh L. Brunk , Ravi K. Sharma
IPC分类号： G06K9/00 , G06K9/36
CPC分类号： G10L21/00 , G06T1/0064 , G06T2201/0052 , G10L19/018 , H04N1/32144 , H04N1/32154 , H04N1/32352
摘要： Machine readable signals embedded in other media signals include a circular structure in a transform domain to facilitate detection. The machine readable signals are not apparent to human observers of rendered media containing the machine readable signals, such as images and documents. A detector captures the media signal, transforms it to the transform domain, and then uses the circular structure in the transform domain to facilitate detection despite rotation of the media signal.
摘要翻译：嵌入在其他媒体信号中的机读信号包括变换域中的圆形结构以便于检测。机器可读信号对于包含机器可读信号（例如图像和文档）的渲染介质的人类观察者来说是不明显的。检测器捕获媒体信号，将其转换为变换域，然后在变换域中使用圆形结构，以便尽管媒体信号旋转，以便于检测。

7. 再颁专利

USRE45828E1 Method for determining a printer's signature and the number of dots per inch printed in a document to provide proof that the printer printed a particular document 有权
公开(公告)号：USRE45828E1
公开(公告)日：2015-12-29
申请号：US11084869
申请日：2005-03-17
申请人： Donald G. Mackay , Claude Zeller , Robert A. Cordery , Hugh L. Brunk
发明人： Donald G. Mackay , Claude Zeller , Robert A. Cordery , Hugh L. Brunk
IPC分类号： B41J29/393 , B41J29/38 , G07B17/00
CPC分类号： B41J29/393 , G07B17/00508 , G07B2017/00637
摘要： A method for assigning unique printer resolutions or signatures, i.e., a unique number of dots per inch, to a class, or models of printers or lines of postage meters. The number of dots per inch or resolution may be specified within a image on a document or within a postal indicia and later checked to determine if the image on document or the postal indicia has the correct resolution. The foregoing would be able to detect an image or postal indicia that was scanned into a computer and printed with a printer that did not have the number of dots per inch specified in the image or postal indicia.

8. 发明授权

US09043601B2 Digital watermark key generation 有权
标题翻译：数字水印密钥生成
公开(公告)号：US09043601B2
公开(公告)日：2015-05-26
申请号：US13425037
申请日：2012-03-20
申请人： Trent J. Brundage , Hugh L. Brunk
发明人： Trent J. Brundage , Hugh L. Brunk
IPC分类号： H04L9/32 , H04L9/08 , G06T1/00 , H04N1/32 , H04N21/2389 , H04N21/266 , H04N21/8358 , G10L19/018
CPC分类号： H04L9/0819 , G06T1/0071 , G10L19/018 , H04L9/0816 , H04N1/32144 , H04N1/32154 , H04N1/32272 , H04N1/32288 , H04N21/23892 , H04N21/26613 , H04N21/8358 , H04N2201/3233 , H04N2201/3269 , H04N2201/3281 , H04N2201/3284
摘要： This disclosure relates to message encoding. One claim recites a digital watermark key generation method in which the key providing security for a plural-bit message. The method comprises: providing a plural-bit seed; randomizing the plural-bit seed; using a programmed electronic processor for encoding the randomized plural-bit seed with convolutional encoding, the encoded seed comprising a key; and transforming an independent message with the key, the independent message to be used in a digital watermark encoding process. Of course, other claims and combinations are provided too.
摘要翻译：本公开涉及消息编码。一个权利要求描述了一种数字水印密钥生成方法，其中密钥为多位消息提供安全性。该方法包括：提供多位种子; 随机化多位种子; 使用编程的电子处理器来对所述随机化的多位种子进行卷积编码，所述编码种子包括密钥; 并用密钥变换独立的消息，即在数字水印编码处理中使用的独立消息。当然，也提供其他权利要求和组合。

9. 发明授权

US08761391B2 Digital watermark key generation 有权
标题翻译：数字水印密钥生成
公开(公告)号：US08761391B2
公开(公告)日：2014-06-24
申请号：US13425046
申请日：2012-03-20
申请人： Trent J. Brundage , Hugh L. Brunk
发明人： Trent J. Brundage , Hugh L. Brunk
IPC分类号： H04L9/00
CPC分类号： H04L9/0819 , G06T1/0071 , G10L19/018 , H04L9/0816 , H04N1/32144 , H04N1/32154 , H04N1/32272 , H04N1/32288 , H04N21/23892 , H04N21/26613 , H04N21/8358 , H04N2201/3233 , H04N2201/3269 , H04N2201/3281 , H04N2201/3284
摘要： This disclosure relates to message encoding. Once claim recites an apparatus comprising: electronic memory for buffering identifying data associated with an entity or client; and a multi-purpose electronic processor programmed for: modifying the identifying data with a random or pseudo-random signal; error correction encoding the modified identifying data; and transforming a plural-bit message with the error correction encoded, modified identifying data to produce a key for use with message encoding. Of course, other claims and combinations are provided as well.
摘要翻译：本公开涉及消息编码。一旦声明背诵包括：用于缓冲识别与实体或客户端相关联的数据的电子存储器; 以及多用途电子处理器，其被编程为：用随机或伪随机信号修改所述识别数据; 对修改的识别数据进行纠错编码; 并且用纠错编码的修改的识别数据来变换多位消息以产生用于消息编码的密钥。当然，也提供其他权利要求和组合。

10. 发明申请

US20120076348A1 METHODS, APPARATUS AND PROGRAMS FOR GENERATING AND UTILIZING CONTENT SIGNATURES 有权
标题翻译：用于生成和使用内容签名的方法，装置和程序
公开(公告)号：US20120076348A1
公开(公告)日：2012-03-29
申请号：US13315768
申请日：2011-12-09
申请人： Hugh L. Brunk , Kenneth L. Levy
发明人： Hugh L. Brunk , Kenneth L. Levy
IPC分类号： G06K9/00
CPC分类号： H04N19/467 , G06K9/00744 , H04N19/48
摘要： The presently claimed invention generally relates to deriving and/or utilizing content signatures (e.g., so-called “fingerprints”). One claim recites a method of generating a fingerprint associated with a content item including: pseudo-randomly selecting a segment of the content item; and utilizing a processor or electronic processing circuitry, fingerprinting the selected segment of content item as at least an identifier of the content item. Of course, other claims and combination are provided as well.
摘要翻译：目前要求保护的发明一般涉及导出和/或利用内容签名（例如所谓的“指纹”）。一个权利要求描述了生成与内容项相关联的指纹的方法，包括：伪随机选择内容项的片段; 以及利用处理器或电子处理电路，将内容项目的所选段指纹化为至少内容项目的标识符。当然，也提供其他权利要求和组合。

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