公开(公告)号：US07035409B1

公开(公告)日：2006-04-25

申请号：US09644098

申请日：2000-08-23

Applicant: Scott A. Moskowitz

Inventor： Scott A. Moskowitz

IPC: G09C3/00 ,  G06K9/36

CPC classification number: H04L9/14 ,  G06T1/0028 ,  G06T1/005 ,  G06T1/0057 ,  G06T1/0064 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0053 ,  G06T2201/0061 ,  G06T2201/0063 ,  G06T2201/0065 ,  G06T2201/0083 ,  H04L9/0819 ,  H04L2209/04 ,  H04L2209/043 ,  H04L2209/046 ,  H04N1/3216 ,  H04N1/32187 ,  H04N1/32309 ,  H04N2201/3233 ,  H04N2201/324

Abstract: Multiple transform utilization and applications for secure digital watermarking. In one embodiment of the present invention, digital blocks in digital information to be protected are transformed into the frequency domain using a fast Fourier transform. A plurality of frequencies and associated amplitudes are identified for each of the transformed digital blocks and a subset of the identified amplitudes is selected for each of the digital blocks using a primary mask from a key. Message information is selected from a message using a transformation table generated with a convolution mask. The chosen message information is encoded into each of the transformed digital blocks by altering the selected amplitudes based on the selected message information.

Abstract translation: 多变换利用和安全数字水印应用。 在本发明的一个实施例中，要保护的数字信息中的数字块使用快速傅立叶变换被变换到频域。 为每个变换的数字块识别多个频率和相关联的幅度，并且使用来自密钥的主掩模为每个数字块选择所识别的幅度的子集。 从使用卷积掩码生成的变换表的消息中选择消息信息。 所选择的消息信息通过基于所选择的消息信息改变所选择的幅度而被编码到每个变换的数字块中。

公开(公告)号：US06940995B2

公开(公告)日：2005-09-06

申请号：US10169210

申请日：2001-11-02

Applicant: Jong Uk Choi ,  Gi Chul Choi

Inventor： Jong Uk Choi ,  Gi Chul Choi

IPC: G06T11/60 ,  G06F17/00 ,  G06F21/00 ,  G06K7/00 ,  G06T1/00 ,  G09C5/00 ,  H04N1/32 ,  H04N1/387 ,  H04K1/00

CPC classification number: H04N1/32144 ,  G06F21/64 ,  H04N1/32101 ,  H04N1/32315 ,  H04N2201/3233 ,  H04N2201/324 ,  H04N2201/327

Abstract: The present invention relates to a method and apparatus for authenticating various types of digital certificates by using a text embedding method. The execution of the present invention is divided into two case, one case including images in the certificate and another case not including the images in the certificate, according to the characteristics of the certificate. In the former case, a text embedding method is applied to images included in the certificate to embed a series of information text (a specific number of the certificate, and issuing organization, name of a person in charge, etc.) designated by a person who issues the certificate into the images. In the latter case, there is generated an image imperceptible to the human eve but having the same color as the ground color certificate.

Abstract translation: 本发明涉及一种通过使用文本嵌入方法来认证各种类型的数字证书的方法和装置。 根据证书的特征，将本发明的执行划分为两种情况，一种情况包括证书中的图像和不包括证书中的图像的另一种情况。 在前一种情况下，将文本嵌入方法应用于证书中包含的图像，以嵌入一系列信息文本（特定号码的证书，发行机构，负责人的姓名等），由人指定 谁将证书发布到图像中。 在后一种情况下，产生了人类前夕不可察觉但具有与地面颜色证书相同颜色的图像。

公开(公告)号：US20050108535A1

公开(公告)日：2005-05-19

申请号：US10504706

申请日：2003-01-21

Applicant: Alphons Antonius Bruekers ,  Antonius Adrianus Kalker ,  Michiel Van Der Veen ,  Jaap Haitsma

Inventor： Alphons Antonius Bruekers ,  Antonius Adrianus Kalker ,  Michiel Van Der Veen ,  Jaap Haitsma

IPC: G06T1/00 ,  G11B20/00 ,  H04N1/32 ,  H04N1/387 ,  H04N1/40 ,  H04N5/91 ,  H04N7/08 ,  H04N7/081 ,  H04L9/00

CPC classification number: G06T1/005 ,  G06T2201/0063 ,  G11B20/00086 ,  G11B20/00905 ,  H04N1/32144 ,  H04N1/32304 ,  H04N2201/324

Abstract: Watermark embedding is often used to identify multiple copies (Qi) of the same content (Q). Each copy (Qi) is provided with a different private watermark (Wi) which, for example, identifies the player on which that copy may be reproduced. Private watermarks can be hacked. Averaging two or more watermarked copies may cause any of the private watermarks to become undetectable. The watermark embedder (10) in accordance with the invention embeds a global (fixed) watermark (W) in addition to the private watermark (Wi). The global watermark is the same in each copy and therefore remains detectable. Its presence indicates that a private watermark shall be present as well. It can be used in a protocol like: no playback allowed if the global watermark is present and a private watermark is not found.

Abstract translation: 水印嵌入通常用于识别相同内容的多个拷贝（Qi）（Q）。 每个副本（Qi）被提供有不同的私有水印（Wi），其例如标识可以再现该副本的播放器。 私有水印可能被黑客入侵。 平均两个或更多水印的副本可能导致任何私有水印变得不可检测。 根据本发明的水印嵌入器（10）除了私有水印（Wi）之外还嵌有全局（固定）水印（W）。 全局水印在每个拷贝中是相同的，因此保持可检测。 它的存在表明私有水印也应该存在。 它可以在如下协议中使用：如果存在全局水印并且没有找到私有水印，则不允许播放。

公开(公告)号：US06775394B2

公开(公告)日：2004-08-10

申请号：US10095493

申请日：2002-03-12

Applicant: Hong Heather Yu

Inventor： Hong Heather Yu

IPC: G06K900

CPC classification number: H04N1/00 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0083 ,  H04N1/32203 ,  H04N1/32256 ,  H04N2201/3225 ,  H04N2201/3236 ,  H04N2201/3239 ,  H04N2201/324

Abstract: The present invention is a method for hiding data in document contents. The method comprises receiving information relating to the document contents, wherein at least part of the document contents are of a binary nature, converting the data to halftone pixel groups according to predefined binary classifications associated with combinations of halftone pixels, and embedding the halftone pixel groups into a binary portion of the document contents. Further, the present invention is a method for extracting data hidden in document contents. The method comprises receiving information relating to the document contents, wherein the document contents include halftone pixel groups, extracting the halftone pixel groups from the document contents, and converting the halftone pixel groups to the data according to predefined binary classifications associated with combinations of halftone pixels.

Abstract translation: 本发明是一种在文件内容中隐藏数据的方法。 该方法包括接收与文档内容有关的信息，其中文档内容的至少一部分具有二进制特征，根据与半色调像素的组合相关联的预定二进制分类将数据转换为半色调像素组，并且嵌入半色调像素组 成为文档内容的二进制部分。 此外，本发明是提取隐藏在文档内容中的数据的方法。 该方法包括接收与文档内容相关的信息，其中文档内容包括半色调像素组，从文档内容中提取半色调像素组，并根据与半色调像素的组合相关联的预定二进制分类将半色调像素组转换为数据 。

公开(公告)号：US20040153941A1

公开(公告)日：2004-08-05

申请号：US10752683

申请日：2004-01-08

Inventor： Hirofumi Muratani

IPC: H04L001/00

CPC classification number: G06T1/005 ,  G06T2201/0063 ,  G10L19/018 ,  H04H20/31 ,  H04H2201/50 ,  H04N1/32144 ,  H04N2201/3226 ,  H04N2201/3236 ,  H04N2201/324 ,  H04N2201/327

Abstract: Residue calculating sections respectively obtain residues which take a plurality of integers as modulus, with respect to a user ID. The plurality of integers are stored in modulus storage sections and are prime to each other. Based on these residues and parameters stored in a coding parameter storage section, component codes constructed by continuous sequences of 1 and 0 using a predetermined number of bits as a unit are respectively generated by component code generating sections. These component codes are concatenated by a concatenating section, thereby to obtain a code to be embedded, which constructs watermark information.

公开(公告)号：US20040049684A1

公开(公告)日：2004-03-11

申请号：US10655658

申请日：2003-09-05

Inventor： Tatsuo Nomura ,  Syouichiro Yoshiura ,  Tsutomu Yoshimoto

IPC: H04L009/00

CPC classification number: H04N1/4406 ,  G06F21/608 ,  H04N1/4433 ,  H04N2201/0094 ,  H04N2201/3214 ,  H04N2201/3215 ,  H04N2201/3235 ,  H04N2201/3239 ,  H04N2201/324 ,  H04N2201/3246

Abstract: An image processing device of the present invention includes a management section for storing an authentication level set in accordance with the volume of image processing which is predicted in accordance with at least one of day and time. When a request for image processing to image data is made, an authentication section changes the authentication level for user authentication in accordance with at least one of day and time. Then, in accordance with this authentication result, requested image processing is performed.

Abstract translation: 本发明的图像处理装置包括管理部分，用于存储根据根据日期和时间中的至少一个预测的图像处理量的集合设置的认证级别。 当进行对图像数据的图像处理的请求时，认证部根据日期和时间中的至少一个来改变用户认证的认证级别。 然后，根据该认证结果，执行所请求的图像处理。

公开(公告)号：US20040008864A1

公开(公告)日：2004-01-15

申请号：US10356322

申请日：2003-01-31

Applicant: Kaleidescape, Inc.

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

IPC: G06K009/00

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

Abstract: 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 nullwatermark.null The subset of actual alterations that are made is herein sometimes called a nullfingerprint.null 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 nulloriginal movienull and the nullalt-movie,null or herein sometimes called the nulloriginal blocknull and the nullalt-blocknull for a particular block in the digital content representing the media stream.

Abstract translation: 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有时称为“指纹”。 该方法确定一组位置，其中存在代表相同媒体流的数字内容的替代版本，例如一个是原始的，一个是相同数字内容的替代版本，在此有时称为“原始电影”，并且 “alt-movie”，或有时称为“原始块”的“alt-block”和表示媒体流的数字内容中的特定块的“alt-block”。

公开(公告)号：US20030174857A1

公开(公告)日：2003-09-18

申请号：US10095493

申请日：2002-03-12

Inventor： Hong Heather Yu

IPC: G06K009/00

CPC classification number: H04N1/00 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0083 ,  H04N1/32203 ,  H04N1/32256 ,  H04N2201/3225 ,  H04N2201/3236 ,  H04N2201/3239 ,  H04N2201/324

Abstract: The present invention is a method for hiding data in document contents. The method comprises receiving information relating to the document contents, wherein at least part of the document contents are of a binary nature, converting the data to halftone pixel groups according to predefined binary classifications associated with combinations of halftone pixels, and embedding the halftone pixel groups into a binary portion of the document contents. Further, the present invention is a method for extracting data hidden in document contents. The method comprises receiving information relating to the document contents, wherein the document contents include halftone pixel groups, extracting the halftone pixel groups from the document contents, and converting the halftone pixel groups to the data according to predefined binary classifications associated with combinations of halftone pixels.

Abstract translation: 本发明是一种在文件内容中隐藏数据的方法。 该方法包括接收与文档内容有关的信息，其中文档内容的至少一部分具有二进制特征，根据与半色调像素的组合相关联的预定二进制分类将数据转换为半色调像素组，并且嵌入半色调像素组 成为文档内容的二进制部分。 此外，本发明是提取隐藏在文档内容中的数据的方法。 该方法包括接收与文档内容相关的信息，其中文档内容包括半色调像素组，从文档内容中提取半色调像素组，并根据与半色调像素的组合相关联的预定二进制分类将半色调像素组转换为数据 。

公开(公告)号：US20030131242A1

公开(公告)日：2003-07-10

申请号：US10317634

申请日：2002-12-12

Inventor： Jason Charles Pelly ,  Daniel Warren Tapson

IPC: H04L009/00

CPC classification number: H04N1/32154 ,  G06T1/0071 ,  G06T2201/0052 ,  G06T2201/0063 ,  H04N1/32165 ,  H04N2201/324 ,  H04N2201/327

Abstract: A watermarking system comprises an encoding data processor operable to generate at least one marked version of an original item of material by introducing one of a predetermined set of code words into a copy of the original material item. The apparatus comprises a code word generator operable to provide the code word having a plurality of code word coefficients, and an encoding processor operable to combine the code word coefficients with the material. Each of the plurality of code words of the set is uniquely associated with a data word having first and second fields. Each of a set of values of the first field is represented as a first part of the code word having a first plurality of coefficients, and the second field is represented as a second part of the code word having a second plurality of coefficients. The present invention provides a facility for generating watermark code words having a hierarchy of values. By providing watermark code words having first and second parts, a data word with first and second fields can be uniquely identified. The first and second fields can be assigned to different associated parameters such as for example address parameters. The first field could therefore identify the country of distribution of the material, whereas the second field could identify a particular distribution outlet within the country. A watermarking system can be formed, which finds particular application in identifying a point of distribution of pirate copies of video material generated by capturing the watermarked image, using, for example, a camcorder in a cinema.

Abstract translation: 一种水印系统包括：编码数据处理器，可操作以通过将预定的一组代码字中的一个引入原始物料的副本来产生原始物料的至少一个标记版本。 该装置包括可操作以提供具有多个码字系数的码字的码字发生器和可操作以将码字系数与该资料组合的编码处理器。 集合的多个码字中的每一个与具有第一和第二字段的数据字唯一地相关联。 第一场的一组值中的每一个被表示为具有第一多个系数的码字的第一部分，并且第二场被表示为具有第二多个系数的码字的第二部分。 本发明提供了一种用于生成具有值层级的水印码字的设备。 通过提供具有第一和第二部分的水印码字，可以唯一地识别具有第一和第二字段的数据字。 可以将第一和第二字段分配给不同的相关参数，例如地址参数。 因此，第一个领域可以确定材料分配的国家，而第二个领域可以识别该国内特定的分销渠道。 可以形成水印系统，其特征在于，通过使用例如电影院中的摄像机来识别通过捕获水印图像而生成的视频资料的盗版副本的分布点。

公开(公告)号：US20030123658A1

公开(公告)日：2003-07-03

申请号：US10317631

申请日：2002-12-12

Inventor： Jason Charles Pelly ,  Daniel Warren Tapson

IPC: H04L009/00

CPC classification number: H04N1/32154 ,  G06T1/005 ,  G06T2201/0052 ,  G06T2201/0063 ,  H04N1/32165 ,  H04N2201/3236 ,  H04N2201/324 ,  H04N2201/327

Abstract: A watermarking system comprises an encoding data processor operable to generate at least one marked version of an original item of material by introducing one of a predetermined set of code words into a copy of the original material item. The encoding data processor is arranged to form other code words of the set by cyclically shifting a first code word. The system includes a detecting data processor operable to identify the code word in the marked material item. The detecting data processor is operable to recover the code word from the marked material item and to form a Fourier transform of the recovered code word and a Fourier transform of the first code word of the set. The data detecting processor forms correlation samples by forming an inverse transform of a combination of the recovered and the first code word. Each of the correlation value samples provides the correlation value for one of the set of code words. A computationally efficient way of calculating the correlation for each code word in the set is thereby provided. As a result a time taken to detect a code word present in a marked material item is improved. The watermarking system finds particular application in identifying a point of distribution of pirate copies of video material generated by capturing the watermarked image, using, for example, a camcorder in a cinema.