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    Watermarking and Fingerprinting Digital Content Using Alternative Blocks to Embed Information
    32.
    发明申请
    Watermarking and Fingerprinting Digital Content Using Alternative Blocks to Embed Information 审中-公开
    水印和指纹数字内容使用替代块嵌入信息

    公开(公告)号：US20120237078A1

    公开(公告)日：2012-09-20

    申请号：US13482137

    申请日：2012-05-29

    申请人： Stephen Watson ,  Daniel A. Collens ,  Kevin Hui ,  Michael A. Malcolm

    发明人： Stephen Watson ,  Daniel A. Collens ,  Kevin Hui ,  Michael A. Malcolm

    IPC分类号： G06K9/00

    CPC分类号： H04N1/32187 ,  G06T1/0035 ,  H04N1/32165 ,  H04N1/32277 ,  H04N19/467 ,  H04N21/2383 ,  H04N21/23892 ,  H04N21/4348 ,  H04N21/8358 ,  H04N2201/324

    摘要： A method of embedding information in digital content representing media streams. The method includes (1) selecting a set of locations within that digital content reprensenting the media stream to embed information, (2) selecting a set of possible alterations to make at those locations, and (3) making a subset of the possible alterations. The set of locations and possible alterations is herein sometimes called a “watermark.” The subset of actual alterations that are made is herein sometimes called a “fingerprint.” The method determines a set of locations at which there are alternative versions of digital content representing the same media stream, such as one being the original and one being an alternative version of the same digital content, herein sometimes called the “original movie” and the “alt-movie,” or herein sometimes called the “original block” and the “alt-block” for a particular block in the digital content representing the media stream.

    摘要翻译： 一种在表示媒体流的数字内容中嵌入信息的方法。 该方法包括：（1）选择代替媒体流的数字内容中的一组位置以嵌入信息;（2）选择在这些位置进行的一组可能的改变，以及（3）制作可能的改变的子集。 这里的一组位置和可能的改变在这里有时被称为“水印”。所做的实际改变的子集在这里有时被称为“指纹”。该方法确定一组位置，其中存在代表 相同的媒体流，例如一个是原始的，一个是相同的数字内容的替代版本，在这里有时被称为“原始电影”和“alt-movie”，或者这里有时被称为“原始块”，并且 对于表示媒体流的数字内容中的特定块的“alt-block”。

    Image Watermarking
    33.
    发明申请
    Image Watermarking 有权
    图像水印

    公开(公告)号：US20120093356A1

    公开(公告)日：2012-04-19

    申请号：US13338025

    申请日：2011-12-27

    申请人： Vivek SESHADRI ,  Kiran Singh PANESAR ,  Ranveer KUNAL

    发明人： Vivek SESHADRI ,  Kiran Singh PANESAR ,  Ranveer KUNAL

    IPC分类号： G06K9/36

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

    摘要： 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.

    摘要翻译： 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，并将水印嵌入 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。

    Perceptual Modeling of Media Signals for Data Hiding
    34.
    发明申请
    Perceptual Modeling of Media Signals for Data Hiding 有权
    用于数据隐藏的媒体信号的感知建模

    公开(公告)号：US20110150268A1

    公开(公告)日：2011-06-23

    申请号：US12912471

    申请日：2010-10-26

    申请人： Brett T. Hannigan ,  Alastair M. Reed ,  Brett A. Bradley

    发明人： Brett T. Hannigan ,  Alastair M. Reed ,  Brett A. Bradley

    IPC分类号： G06K9/00

    CPC分类号： G06T1/0028 ,  G06T2201/0051 ,  H04N1/3216 ,  H04N1/32165 ,  H04N1/3217 ,  H04N1/32187 ,  H04N1/32192

    摘要： The present disclosure relates generally to embedding auxiliary data and data hiding. One claim recites a method including: receiving data representing a media signal; using a programmed electronic processor, calculating perceptibility characteristics of the media signal, in which the perceptibility characteristics include contrast; using a programmed electronic processor, calculating a non-linear contrast to gain mapping using the perceptibility characteristics; using a programmed electronic processor, embedding an auxiliary signal in the media signal with reference to the non-linear contrast to gain mapping. Other claims and combinations are also provided.

    摘要翻译： 本公开一般涉及嵌入辅助数据和数据隐藏。 一个权利要求描述了一种方法，包括：接收表示媒体信号的数据; 使用编程的电子处理器，计算媒体信号的感知特性，其中感知特性包括对比度; 使用编程的电子处理器，计算非线性对比度以使用感知特性来增益映射; 使用编程的电子处理器，参考非线性对比度将增益映射参考在媒体信号中嵌入辅助信号。 还提供了其他权利要求和组合。

    Perceptual modeling of media signals for data hiding
    36.
    发明授权
    Perceptual modeling of media signals for data hiding 有权
    用于数据隐藏的媒体信号的感知建模

    公开(公告)号：US07822226B2

    公开(公告)日：2010-10-26

    申请号：US12360549

    申请日：2009-01-27

    申请人： Brett T. Hannigan ,  Alastair M. Reed ,  Brett Alan Bradley

    发明人： Brett T. Hannigan ,  Alastair M. Reed ,  Brett Alan Bradley

    IPC分类号： G06K9/00 ,  H04N11/02

    CPC分类号： G06T1/0028 ,  G06T2201/0051 ,  H04N1/3216 ,  H04N1/32165 ,  H04N1/3217 ,  H04N1/32187 ,  H04N1/32192

    摘要： The present invention relates generally to embedding auxiliary data and data hiding. One claim recites a method including: calculating with a processor or electronic circuitry characteristics of a media signal comprising audio or video; based at least in part on calculated characteristics of the media signal, providing a map of the media signal, wherein the map identifies at least one portion of the media signal in which plural-bit data should be steganographically encoded; transforming at least some portions of the media signal into a transform domain; and steganographically encoding with a processor or electronic circuitry auxiliary data in data representing at least the one portion of the media signal in which the plural-bit data should be steganographically encoded, and wherein at least said act of transforming or said act of steganographically encoding utilizes the map of the media signal. Other claims and combinations are also provided.

    摘要翻译： 本发明一般涉及嵌入辅助数据和数据隐藏。 一个要求描述了一种方法，包括：利用包括音频或视频的媒体信号的处理器或电子电路特性进行计算; 至少部分地基于所计算的媒体信号的特性，提供媒体信号的映射，其中，所述映射标识要对其进行隐写编码的多位数据的媒体信号的至少一部分; 将所述媒体信号的至少一些部分转换成变换域; 以及在代表媒体信号的至少一部分的数据中的处理器或电子电路辅助数据的隐写编码，其中多位数据应被隐写编码，并且其中至少所述变换动作或所述隐写编码动作利用 媒体信号的地图。 还提供了其他权利要求和组合。

    Encoding and detecting apparatus
    37.
    发明授权
    Encoding and detecting apparatus 有权
    编码和检测装置

    公开(公告)号：US07584361B2

    公开(公告)日：2009-09-01

    申请号：US11000315

    申请日：2004-11-30

    申请人： Daniel Warren Tapson

    发明人： Daniel Warren Tapson

    IPC分类号： H04L9/32 ,  H04N7/167

    CPC分类号： G06T9/007 ,  H04N1/04 ,  H04N1/32154 ,  H04N1/32165

    摘要： According to the present invention there is provided an encoding data processing apparatus for generating a marked copy of an item of material by introducing code words into a copy of the material item. The code words are arranged to identify a data word from a set of data words having at least two fields. The apparatus comprises a code word generator operable to generate at least two code words having a plurality of code word coefficients, each of the code words being independently generated from a different code word seed, and an encoding processor operable to combine the code word coefficients with the material item. One of the code words is selected from a first set in dependence upon a value of a first of the data fields and one of the code words is selected from a second set in dependence upon a value of a second of the data fields. The values of the first data field are associated with the first set of code words and values of the second data field are associated with the second set of code words, the second set of code words being selected in dependence upon the value of the first data field. By arranging for a value of a second or subsequent data field to be selected in dependence upon a value of the first or a previous data field, then a detecting complexity for unambiguously identifying the data word can be substantially reduced.

    摘要翻译： 根据本发明，提供了一种编码数据处理装置，用于通过将代码字引入材料项目的副本来产生材料项目的标记副本。 代码字被布置成从具有至少两个场的数据字集合中识别数据字。 该装置包括码字发生器，可操作以产生具有多个码字系数的至少两个码字，每个码字独立地从不同的码字种子生成，编码处理器可操作以将码字系数与 物料项目。 根据第一数据字段的值，从第一集合中选择一个码字，并且根据第二数据字段的值从第二集合中选择一个码字。 第一数据字段的值与第一组码字相关联，并且第二数据字段的值与第二组码字相关联，第二组码字根据第一数据的值被选择 领域。 通过根据第一或先前数据字段的值排列要选择的第二或后续数据字段的值，则可以显着减少用于明确地识别数据字的检测复杂度。

    APPRATUS AND METHOD FOR REVERSIBLE DATA HIDING FOR JPEG IMAGES
    38.
    发明申请
    APPRATUS AND METHOD FOR REVERSIBLE DATA HIDING FOR JPEG IMAGES 有权
    用于JPEG图像的可逆数据隐藏的装置和方法

    公开(公告)号：US20080199093A1

    公开(公告)日：2008-08-21

    申请号：US11676399

    申请日：2007-02-19

    申请人： Yun-Qing Shi ,  Guorong Xuan

    发明人： Yun-Qing Shi ,  Guorong Xuan

    IPC分类号： G06K9/46

    CPC分类号： H04N1/32187 ,  G06T1/0035 ,  G06T1/0057 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0061 ,  H04N1/32165 ,  H04N1/32277 ,  H04N1/32347 ,  H04N1/32352

    摘要： Embodiments of the invention are directed toward reversible/invertible and lossless, image data hiding that can imperceptibly hide data into digital images and can reconstruct the original image without any distortion after the hidden data have been extracted in various digital image formats including, but not limited to Joint Photographic Experts Group (JPEG). In particular, embodiments of the invention provide a lossless data hiding technique for JPEG images based on histogram pairs. that embeds data into the JPEG quantized 8×8 block DCT coefficients and achieves good performance in terms of peak signal-to-noise ratio (PSNR) versus payload through manipulating histogram pairs with optimum threshold and optimum region of the JPEG DCT coefficients. Furthermore, the invented technology is expected to be able to apply to the I-frame of Motion Picture Experts Group (MPEG) video for various applications including annotation, authentication, and forensics.

    摘要翻译： 本发明的实施例涉及可逆/可逆和无损的图像数据隐藏，其可以不可知地将数据隐藏到数字图像中，并且可以在以各种数字图像格式提取隐藏数据之后重建原始图像而没有任何失真，包括但不限于 联合图像专家组（JPEG）。 特别地，本发明的实施例提供了一种基于直方图对的JPEG图像的无损数据隐藏技术，其将数据嵌入到JPEG量化的8×8块DCT系数中，并且在峰值信噪比（PSNR）与 通过操纵具有JPEG DCT系数的最佳阈值和最佳区域的直方图对的有效载荷。 此外，本发明的技术预期能够应用于运动图像专家组（MPEG）视频的I帧，用于包括注释，认证和取证的各种应用。