公开(公告)号：US08014562B2

公开(公告)日：2011-09-06

申请号：US12575150

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 signal processing of media content, e.g., audio or video content. One form of signal processing derives identifying information from media content. One claim recites a method including: upon encountering audio or video content, and using a programmed electronic processor, attempting to derive identifying information from data representing the encountered audio or video content; if a digital watermark is not obtained from the data representing the encountered audio or video content, modifying the encountered audio or video content; and then attempting to attempting to derive identifying information from data representing the modified audio or video content. Of course, other claims are provided too.

Abstract translation: 本发明一般涉及媒体内容的信号处理，例如音频或视频内容。 一种形式的信号处理从媒体内容中导出识别信息。 一个声明描述了一种方法，包括：在遇到音频或视频内容并使用编程的电子处理器时，尝试从表示所遇到的音频或视频内容的数据中导出识别信息; 如果没有从表示所遇到的音频或视频内容的数据获得数字水印，则修改遇到的音频或视频内容; 然后尝试从表示修改的音频或视频内容的数据中导出识别信息。 当然，也提供其他索赔。

公开(公告)号：US07995790B2

公开(公告)日：2011-08-09

申请号：US11427265

申请日：2006-06-28

Applicant: Alastair M. Reed ,  Brett T. Hannigan

Inventor： Alastair M. Reed ,  Brett T. Hannigan

IPC: G06K9/00

CPC classification number: G06T1/0028 ,  G06T1/0042 ,  G06T2201/0051 ,  G06T2201/0065

Abstract: The present invention relates to digital watermarking. In one implementation, a system is provided to read a digital watermark from digital imagery which includes data representing a number of pixels. Each pixel of the number of pixels is defined by a set of values representing color components of the particular pixel. The digital watermark is embedded in the digital imagery through modifications to at least some data representing the digital imagery. The system includes a filter to calculate values of pixels along a preferred projection axis, the preferred projection axis corresponds to a direction of embedding determined based on color characteristics of at least some pixels associated with the digital imagery; and a digital watermark reader which operates on values calculated by the filter. Other implementations are provided as well.

Abstract translation: 本发明涉及数字水印技术。 在一个实现中，提供了一种系统，用于从数字图像读取数字水印，数字图像包括表示多个像素的数据。 像素数的每个像素由表示特定像素的颜色分量的一组值定义。 通过对代表数字图像的至少一些数据进行修改，将数字水印嵌入到数字图像中。 该系统包括用于计算沿着优选投影轴的像素值的滤光器，优选投影轴对应于基于与数字图像相关联的至少一些像素的颜色特性确定的嵌入方向; 以及对由滤波器计算的值进行操作的数字水印读取器。 还提供其他实现。

公开(公告)号：US07991182B2

公开(公告)日：2011-08-02

申请号：US11553406

申请日：2006-10-26

Applicant: Geoffrey B. Rhoads

Inventor： Geoffrey B. Rhoads

IPC: H04K1/00

CPC classification number: H04N1/00846 ,  B29C45/1418 ,  B42D25/29 ,  G06T1/0021 ,  G06T1/0028 ,  G06T1/005 ,  G06T1/0064 ,  G06T1/0071 ,  G06T7/0002 ,  G06T2201/0051 ,  G06T2201/0065 ,  G07D7/0034 ,  G07D7/004 ,  G10L19/018 ,  H04N1/00002 ,  H04N1/00005 ,  H04N1/00037 ,  H04N1/00092 ,  H04N1/00244 ,  H04N1/00859 ,  H04N1/00867 ,  H04N1/0087 ,  H04N1/00875 ,  H04N1/32144 ,  H04N1/32203 ,  H04N1/32208 ,  H04N1/32219 ,  H04N1/32261 ,  H04N1/32304 ,  H04N1/32309 ,  H04N2201/3205 ,  H04N2201/3207 ,  H04N2201/3226 ,  H04N2201/3233 ,  H04N2201/3239 ,  H04N2201/3246 ,  H04N2201/3249 ,  H04N2201/327 ,  H04N2201/3271 ,  Y10S283/901

Abstract: The present disclosure is generally related to steganographic encoding and decoding (e.g., data hiding). One claim recites a method including: obtaining media comprising a plurality of line graphics, each of the line graphics comprising one or more contours; obtaining a plural-bit message; obtaining an intermediate signal based at least in part on the plural-bit message; and using a programmed electronic processor, modulating contours of at least some of the plurality of line graphics to steganographically represent the plural-bit message in the media, in which said act of modulating utilizing the intermediate signal to modulate the contours. Of course, other claims and combinations are provided too.

Abstract translation: 本公开通常涉及隐写编码和解码（例如，数据隐藏）。 一个权利要求描述了一种方法，包括：获得包括多个线图形的媒体，每个线图包括一个或多个轮廓; 获得多位消息; 至少部分地基于所述多位消息获得中间信号; 并且使用编程的电子处理器，调制所述多个线图形中的至少一些的图形的轮廓线以图形方式表示所述媒体中的所述多位消息，其中利用所述中间信号调制所述轮廓的所述调节动作。 当然，也提供其他权利要求和组合。

公开(公告)号：US07958365B2

公开(公告)日：2011-06-07

申请号：US12408529

申请日：2009-03-20

Applicant: Hugh L. Brunk

Inventor： Hugh L. Brunk

IPC: G06F21/00

CPC classification number: G06T1/005 ,  G06T2201/0065

Abstract: A classification scheme assigns samples of the watermarked media to classes based on classification criteria indicating a likely presence of a watermarked signal. Once classified, the scheme determines statistical characteristics of the media signal for the classes, and assigns a figure of merit to the samples in each class. A watermark decoder (e.g., reader and/or detector) use the figure of merit to adapt a watermark decoding function to the statistical features of the classes, such as weighting to samples to improve watermark decoding.

Abstract translation: 分类方案基于指示可能存在水印信号的分类标准将水印介质的样本分配给类。 一旦分类，该方案确定类的媒体信号的统计特性，并为每个类中的样本分配品质因数。 水印解码器（例如，读取器和/或检测器）使用品质因数来将水印解码功能适应于类的统计特征，例如对样本的加权以改进水印解码。

公开(公告)号：US20110069861A1

公开(公告)日：2011-03-24

申请号：US12720555

申请日：2010-03-09

Applicant: Trent J. Brundage ,  Brett T. Hannigan ,  Ravi K. Sharma

Inventor： Trent J. Brundage ,  Brett T. Hannigan ,  Ravi K. Sharma

IPC: G06K9/00

CPC classification number: G06T1/005 ,  G06T2201/0065

Abstract: Digital data is decoded from media signals (e.g., audio, images, video, etc.) using a distributed processing in which a first device receives and pre-processes the signal, and transmits it to a remote device for further decoding. One method pre-filters the media signal, leaving a residual from which digital data is decoded. Other arrangements progressively send portions of the signal for decoding operations.

Abstract translation: 使用其中第一设备接收并预处理信号的分布式处理从媒体信号（例如，音频，图像，视频等）解码数字数据，并将其发送到远程设备以进一步解码。 一种方法对媒体信号进行预过滤，留下数字数据被解码的残差。 其他安排逐渐发送用于解码操作的信号的部分。

公开(公告)号：US07907747B2

公开(公告)日：2011-03-15

申请号：US11791838

申请日：2005-11-30

Applicant: Masataka Ejima ,  Hisashi Inoue ,  Kenichi Noridomi

Inventor： Masataka Ejima ,  Hisashi Inoue ,  Kenichi Noridomi

IPC: G06K9/00 ,  H04L9/32

CPC classification number: G06T1/005 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0065 ,  H04N1/32144

Abstract: Even in the case where a positional misalignment occurs to an embedded digital watermark, watermark information is accurately detected. A digital watermark embedding device includes a block dividing section for dividing digital data into a plurality of blocks each having a predetermined size, and a block selecting section for selecting m blocks (m is an integer no less than 2) from the plurality of the blocks in accordance with a predetermined order. The device further includes an additional pattern setting section for setting a combination of m additional patterns which are selected from a plurality types of additional patterns, the combination corresponding to one data element to be embedded into the selected m blocks, and an additional pattern embedding section for embedding each of the set additional patterns into each of the selected blocks.

Abstract translation: 即使在嵌入式数字水印发生位置偏移的情况下，也能够精确地检测出水印信息。 一种数字水印嵌入装置，具有：数字数据分割部，将数字数据分割成多个具有预定尺寸的块;块选择部，从多个块中选择m个块（m为2以上的整数） 按照预定的顺序。 该装置还包括附加模式设置部分，用于设置从多种类型的附加模式中选择的m个附加模式的组合，对应于要嵌入到所选择的m个模块中的一个数据元素的组合，以及附加模式嵌入部分 用于将每个所设置的附加图案嵌入到每个所选择的块中。

公开(公告)号：US07817817B2

公开(公告)日：2010-10-19

申请号：US11221727

申请日：2005-09-09

Applicant: Min Wu ,  Hongmei Gou

Inventor： Min Wu ,  Hongmei Gou

IPC: G06K9/00

CPC classification number: G06T1/005 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0063 ,  G06T2201/0065

Abstract: A method of concealing data in images imperceptibly alters curves therein, such as through adding a value representing the data to be hidden to each of a number of B-spline control points representing the original curve. The altered control points characterize the imperceptibly altered curve, which replaces the original curve in the image. The altered control points may be later extracted from the image and compared with the original control points to determine the hidden value. Prudent selection of the values altering the control points as well as an iterative alignment-minimization algorithm in the detection process provides protection against numerous techniques for preventing the hidden values from being recovered.

Abstract translation: 隐藏图像中的数据的方法不可察觉地改变其中的曲线，例如通过向表示原始曲线的多个B样条控制点中的每一个添加表示要隐藏的数据的值。 改变的控制点表征了不可察觉地改变的曲线，这取代了图像中的原始曲线。 可以稍后从图像中提取改变的控制点，并与原始控制点进行比较以确定隐藏值。 改变控制点的值的谨慎选择以及检测过程中的迭代对齐最小化算法提供了针对许多防止隐藏值被恢复的技术的保护。

公开(公告)号：US07813008B2

公开(公告)日：2010-10-12

申请号：US11973118

申请日：2007-10-05

Applicant: Jindong Chen

Inventor： Jindong Chen

IPC: H04N1/409 ,  H04N1/405 ,  G06T5/00 ,  G06K15/00

CPC classification number: H04N1/405 ,  G06T2201/0065

Abstract: A system and method for improving the appearance of a raster image that includes glyph shapes is provided. A pair of glyph shapes is defined. Each glyph shape is differentiated two-dimensional machine readable data of relatively uniform appearance. Each of the glyph shapes is assigned to a different bit value. Digital data from an input source is encoded into a bitmap image space by representing a bit value for each item of the digital data as the glyph shape corresponding to that bit value. A raster image of the encoded glyph shapes is generated from the bitmap image space.

Abstract translation: 提供了一种用于改善包括字形的光栅图像的外观的系统和方法。 定义了一对字形。 每个字形是差异化的二维机读数据，外观相对均匀。 每个字形被分配给不同的位值。 通过将数字数据的每个项目的位值表示为对应于该位值的字形，将来自输入源的数字数据编码为位图图像空间。 从位图图像空间生成编码字形的光栅图像。

公开(公告)号：US20100177977A1

公开(公告)日：2010-07-15

申请号：US12354534

申请日：2009-01-15

Applicant: Vivek Seshadri ,  Kiran Singh Panesar ,  Ranveer Kunal

Inventor： Vivek Seshadri ,  Kiran Singh Panesar ,  Ranveer Kunal

IPC: G06K9/36

CPC classification number: H04N19/467 ,  G06T1/0021 ,  G06T2201/0052 ,  G06T2201/0065 ,  G06T2201/0083 ,  H04N1/32165 ,  H04N1/32187 ,  H04N1/32288 ,  H04N1/3232 ,  H04N19/48

Abstract: Methods and systems for watermarking of digital images are presented. In one aspect, a method of embedding information in a digital image includes transforming the digital image to a set of coefficient blocks having coefficients in a frequency domain, embedding a watermark-indicator in one or more of the coefficient blocks, and embedding a watermark in one or more watermark blocks that have a predetermined number of coefficient blocks. The embedded watermark is substantially invisible in the output watermarked digital image. Another aspect is a method of extracting a watermark from a digital image that includes transforming a digital image to a coefficient matrix, determining if the digital image is watermarked based on a predetermined watermark-indicator, and retrieving a watermark from a projected watermark block of a projected watermark block distribution.

Abstract translation: 提出了数字图像水印的方法和系统。 一方面，一种在数字图像中嵌入信息的方法包括：将数字图像变换为具有频域系数的系数块组，将一个或多个系数块嵌入水印指示符，并嵌入水印 具有预定数量的系数块的一个或多个水印块。 嵌入水印在输出水印数字图像中基本上是不可见的。 另一方面是一种从数字图像提取水印的方法，包括将数字图像变换为系数矩阵，基于预定的水印指示器确定数字图像是否被加水印，以及从水印的投影水印块中检索水印 投影水印块分布。

公开(公告)号：US07751588B2

公开(公告)日：2010-07-06

申请号：US12336394

申请日：2008-12-16

Applicant: Geoffrey B. Rhoads

Inventor： Geoffrey B. Rhoads

IPC: H04K1/00

CPC classification number: G10L19/018 ,  G06K9/00442 ,  G06T1/0028 ,  G06T1/005 ,  G06T2201/0064 ,  G06T2201/0065 ,  H04N1/00005 ,  H04N1/00037 ,  H04N1/00079 ,  H04N1/32122 ,  H04N1/32149 ,  H04N1/32154 ,  H04N1/32203 ,  H04N1/32229 ,  H04N1/32288 ,  H04N1/32352 ,  H04N21/23892 ,  H04N21/8358 ,  H04N2201/3205 ,  H04N2201/3207 ,  H04N2201/3225 ,  H04N2201/3226 ,  H04N2201/3233 ,  H04N2201/327 ,  H04N2201/3271 ,  H04N2201/3274 ,  H04N2201/3284

Abstract: A form of error processing is used to decode steganographic messages embedded in image and audio signals in the presence of distortion, which tends to introduce errors in steganographic data communication. Content signals with auxiliary embedded data are analyzed to detect embedded message signals. Confidence values are assigned to the message signals and used to ascertain whether a message has been accurately detected. Error processing enables accurate message extraction in the presence of “soft errors” in the embedded message signal. This error processing enables more effective recovery of the steganographic message from content signals that undergo distortion and/or loss transformations after being embedded with steganographic data.

Abstract translation: 在存在失真的情况下，使用错误处理的形式对嵌入在图像和音频信号中的隐写消息进行解码，这倾向于在隐写数据通信中引入错误。 分析具有辅助嵌入数据的内容信号以检测嵌入式消息信号。 将置信度值分配给消息信号，并用于确定消息是否已被准确检测。 在嵌入式消息信号中存在“软错误”的情况下，错误处理能够实现精确的消息提取。 该错误处理使得能够在嵌入隐写数据之后从经历失真和/或丢失变换的内容信号更有效地恢复隐写消息。