公开(公告)号：US20100013951A1

公开(公告)日：2010-01-21

申请号：US12562883

申请日：2009-09-18

Applicant: Tony F. Rodriguez ,  John Stach ,  Alastair M. Reed

Inventor： Tony F. Rodriguez ,  John Stach ,  Alastair M. Reed

IPC: H04N5/225 ,  G06K9/00

CPC classification number: G06T1/0028 ,  G06T1/0064

Abstract: The present claims recite various steganographic and digital watermarking methods and apparatus. One claim recites a method of watermarking a representation of a physical object. The method includes: projecting a watermark orientation component onto a physical object; and using a camera or image sensor, capturing an image or video of the physical object including the watermark orientation component as projected thereon. Another claim recites an apparatus including: a light source for projecting a registration component onto a physical object; a camera or sensor for capturing an image or video of the physical object including the registration component as projected thereon; and an electronic processor programmed for encoding a message in the image or video captured by said camera or sensor. Of course, other claims and combinations are provided as well.

Abstract translation: 本权利要求描述了各种隐写和数字水印方法和装置。 一个要求描述了对物理对象的表示进行水印的方法。 该方法包括：将水印定向分量投影到物理对象上; 以及使用照相机或图像传感器，捕获包括投影在其上的水印定向分量的物理对象的图像或视频。 另一个权利要求描述了一种装置，包括：用于将登记部件投射到物理对象上的光源; 照相机或传感器，用于捕获包括在其上投射的登记部件的物理对象的图像或视频; 以及被编程用于对由所述相机或传感器捕获的图像或视频中的消息进行编码的电子处理器。 当然，也提供其他权利要求和组合。

公开(公告)号：US07599518B2

公开(公告)日：2009-10-06

申请号：US11365976

申请日：2006-02-28

Applicant: Adnan M. Alattar ,  John Stach ,  Jun Tian

Inventor： Adnan M. Alattar ,  John Stach ,  Jun Tian

IPC: G06K9/00

CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0083 ,  G06T2201/0202 ,  G06T2201/0203 ,  G10L19/018 ,  H04N1/32149 ,  H04N1/32187 ,  H04N1/32229 ,  H04N1/32283 ,  H04N1/32347 ,  H04N1/32352 ,  H04N2201/3233 ,  H04N2201/327

Abstract: Reversible watermarking methods enable auxiliary data to be embedded in data sets, such as images, audio, video and software. The reversible nature of the method enables the original data set to be perfectly restored. Control systems with feedback loops are used to optimize embedding based on distortion or auxiliary data capacity constraints. The watermarking may be applied recursively to embed several layers, where subsequent layers are embedded into a previously watermarked data set. To recover the original data, each layer is extracted and the data restored in reverse order of the embedding. Sets of elements that are expanded to carry auxiliary data in each layer overlap or are interleaved to maximize embedding capacity or quality of the host data.

Abstract translation: 可逆水印方法使辅助数据可以嵌入数据集，如图像，音频，视频和软件。 该方法的可逆性使得能够完美地恢复原始数据集。 具有反馈回路的控制系统用于基于失真或辅助数据容量约束优化嵌入。 可以递归地应用水印以嵌入几个层，其中后续层被嵌入到先前加水印的数据集中。 为了恢复原始数据，提取每一层，并以与嵌入相反的顺序恢复数据。 扩展为在每个层中传送辅助数据的元素的集合重叠或交织以最大化嵌入容量或主机数据的质量。

公开(公告)号：US07489801B2

公开(公告)日：2009-02-10

申请号：US11383742

申请日：2006-05-16

Applicant: Ravi K. Sharma ,  John Stach

Inventor： Ravi K. Sharma ,  John Stach

IPC: G06K9/36 ,  H04N7/167

CPC classification number: G06T1/0064 ,  G06T2201/0052

Abstract: This disclosure describes methods and systems for encoding a digital watermark into and/or detecting a digital watermark from a host (or media) signal such as audio, video or imagery. One implementation involves a method of detecting a digital watermark. The method includes: receiving a host signal carrying a digital watermark; computing attributes of the host signal; using the attributes of the host signal to compute a key; and using the key to detect the digital watermark in a transform domain dependent on the key. Other methods, systems and apparatus are provided as well.

Abstract translation: 本公开描述了用于从诸如音频，视频或图像的主机（或媒体）信号将数字水印编码到和/或检测数字水印的方法和系统。 一种实现涉及一种检测数字水印的方法。 该方法包括：接收携带数字水印的主机信号; 计算主机信号的属性; 使用主机信号的属性来计算密钥; 并使用该密钥来检测取决于密钥的变换域中的数字水印。 还提供了其他方法，系统和装置。

公开(公告)号：US07454033B2

公开(公告)日：2008-11-18

申请号：US10469474

申请日：2002-03-22

Applicant: John Stach ,  Hugh L. Brunk ,  Ravi K. Sharma

Inventor： John Stach ,  Hugh L. Brunk ,  Ravi K. Sharma

IPC: H04K1/00

CPC classification number: G10L21/00 ,  G06T1/0064 ,  G06T2201/0052 ,  G10L19/018 ,  H04N1/32144 ,  H04N1/32154 ,  H04N1/32352

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07321667B2

公开(公告)日：2008-01-22

申请号：US11127442

申请日：2005-05-11

Applicant: John Stach

Inventor： John Stach

IPC: H04K1/00

CPC classification number: H04N1/32149 ,  G06T1/0064 ,  G06T2201/0051 ,  H04N1/32154 ,  H04N1/32187 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32251 ,  H04N1/32309 ,  H04N2201/327

Abstract: The present invention provides steganographic embedding techniques. A digital watermark signal is reduced to a set of spatial positions. The set of spatial positions sufficiently conveys the digital watermark signal. Message objects are positioned according to the set of spatial positions. Non-message objects are combined with the message objects to form an image or design. The message objects include distinguishable characteristics, e.g., via color, contrast, gray-scale level or luminance, in comparison to the non-message objects. The digital watermark signal is detected by distinguishing the message objects from the non-message objects (e.g., via color or contrast differences) and analyzing the relative placement of the message objects within the image or design.

Abstract translation: 本发明提供隐写嵌入技术。 数字水印信号被减少到一组空间位置。 该组空间位置充分地传达了数字水印信号。 消息对象根据空间位置的集合进行定位。 非消息对象与消息对象组合以形成图像或设计。 与非消息对象相比，消息对象包括例如经由颜色，对比度，灰度级或亮度的可区分的特征。 通过将消息对象与非消息对象（例如，经由颜色或对比度差异）区分开来并且分析消息对象在图像或设计内的相对位置来检测数字水印信号。

公开(公告)号：US20070201722A1

公开(公告)日：2007-08-30

申请号：US11682802

申请日：2007-03-06

Applicant: Jun Tian ,  John Stach ,  Neil Lofgren

Inventor： Jun Tian ,  John Stach ,  Neil Lofgren

IPC: H04N1/32

CPC classification number: H04N1/32299 ,  H04N1/32144 ,  H04N1/32304 ,  H04N1/3232 ,  H04N1/32331 ,  H04N1/32347

Abstract: The ability to remove a watermark from an encoded image opens the possibility of various novel applications. Several such applications are detailed. One employs a reversible watermark in conjunction with a second (robust) watermark. In this arrangement, the payload of the reversible watermark conveys information about the robust watermark (e.g., encoding parameters, or an error signal), permitting removal of the robust watermark from an uncorrupted encoded image. By such arrangements, the encoded image can be fully restored to its pristine, unencoded state even if several different watermarks have been applied.

Abstract translation: 从编码图像中去除水印的能力打开了各种新颖应用的可能性。 几个这样的应用程序是详细的。 一个结合第二（鲁棒）水印采用可逆水印。 在这种布置中，可逆水印的有效载荷传达关于鲁棒水印的信息（例如，编码参数或误差信号），允许从未损坏的编码图像中去除鲁棒水印。 通过这样的布置，即使已经应用了几个不同的水印，编码图像也可以完全恢复到其原始的未编码状态。

公开(公告)号：US06580809B2

公开(公告)日：2003-06-17

申请号：US10105013

申请日：2002-03-22

Applicant: John Stach ,  Hugh L. Brunk ,  Ravi K. Sharma

Inventor： John Stach ,  Hugh L. Brunk ,  Ravi K. Sharma

IPC: H04K100

CPC classification number: G10L21/00 ,  G06T1/0064 ,  G06T2201/0052 ,  G10L19/018 ,  H04N1/32144 ,  H04N1/32154 ,  H04N1/32352

Abstract: 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.

公开(公告)号：US08019116B2

公开(公告)日：2011-09-13

申请号：US12476844

申请日：2009-06-02

Applicant: Jun Tian ,  John Stach

Inventor： Jun Tian ,  John Stach

IPC: H04K1/00

CPC classification number: H04N1/32299 ,  H04N1/32144 ,  H04N1/32304 ,  H04N1/3232 ,  H04N1/32331 ,  H04N1/32347

Abstract: The ability to remove a watermark from encoded content (e.g., an image) opens the possibility of various novel applications. Several such applications are detailed. One employs a reversible watermark in conjunction with a second (robust) watermark. In this arrangement, the payload of the reversible watermark conveys information about the robust watermark (e.g., encoding parameters, or an error signal), permitting removal of the robust watermark from an uncorrupted encoded image. By such arrangements, the encoded image can be fully restored to its pristine, unencoded state even if several different watermarks have been applied.

Abstract translation: 从编码内容（例如，图像）中去除水印的能力打开了各种新颖应用的可能性。 几个这样的应用程序是详细的。 一个结合第二（鲁棒）水印采用可逆水印。 在这种布置中，可逆水印的有效载荷传达关于鲁棒水印的信息（例如，编码参数或误差信号），允许从未损坏的编码图像中去除鲁棒水印。 通过这样的布置，即使已经应用了几个不同的水印，编码图像也可以完全恢复到其原始的未编码状态。

公开(公告)号：US07986807B2

公开(公告)日：2011-07-26

申请号：US12273423

申请日：2008-11-18

Applicant: John Stach ,  Hugh L. Brunk ,  Ravi K. Sharma

Inventor： John Stach ,  Hugh L. Brunk ,  Ravi K. Sharma

IPC: H04K1/00

CPC classification number: G10L21/00 ,  G06T1/0064 ,  G06T2201/0052 ,  G10L19/018 ,  H04N1/32144 ,  H04N1/32154 ,  H04N1/32352

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07831062B2

公开(公告)日：2010-11-09

申请号：US12464679

申请日：2009-05-12

Applicant: John Stach

Inventor： John Stach

IPC: H04K1/00

CPC classification number: H04N1/32149 ,  G06T1/0064 ,  G06T2201/0051 ,  H04N1/32154 ,  H04N1/32187 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32251 ,  H04N1/32309 ,  H04N2201/327

Abstract: The present invention provides methods and systems related to arranging objects (e.g., circles, dots and other shapes) in images and graphics to convey a machine-readable signal. One claim recites a method including: integrating a plurality of objects in an image or graphic, the objects being arranged in a pattern that is machine-readable by a programmed computer processor, the plurality of objects being integrated in the image or graphic so that the pattern is hidden in the image or graphic through cooperation with design elements of the image or graphic; and providing a visible structure for aiding in machine-reading of the pattern by the programmed computer processor. Of course, other combinations are provided and claimed as well.

Abstract translation: 本发明提供了在图像和图形中排列对象（例如，圆，点和其他形状）以传送机器可读信号的方法和系统。 一个权利要求描述了一种方法，包括：将多个对象集成在图像或图形中，所述对象被布置成由编程的计算机处理器机器可读的模式，所述多个对象被集成在图像或图形中，使得 图案通过与图像或图形的设计元素的合作隐藏在图像或图形中; 并提供可视结构，以帮助由编程的计算机处理器对图案进行机器读取。 当然，也提供并要求保护其他组合。