公开(公告)号：WO2014182963A3

公开(公告)日：2015-02-26

申请号：PCT/US2014037389

申请日：2014-05-08

Applicant: DIGIMARC CORP

Inventor： RODRIGUEZ TONY F ,  RHOADS GEOFFREY B

IPC: G06K9/36

CPC classification number: G06T1/0071 ,  G06Q10/08 ,  G06T1/005 ,  G06T2201/0063 ,  G07D7/005 ,  G07D7/2033

Abstract: First and second patterns are formed on a substrate. A spatial offset between the patterns is determined, and stored for later use in authenticating the substrate. (One or both of the patterns may convey steganographic information. One pattern may be printed, while the other may be embossed.) A smartphone can sense these patterns, determine the spatial offset, and check whether the determined offset matches the earlier- stored offset, to judge whether the substrate is authentic. Another arrangement effects serialization of product packaging by use of paired patterns (at least one of which is typically a steganographic watermark pattern) applied in a manner causing a spatial offset between the patterns to progressively vary along a length of a printed web. Still other arrangements involve substrates conveying patterns that degrade over time, e.g., indicating freshness or pressurization condition. A great variety of other features and arrangements are also detailed.

Abstract translation: 在基板上形成第一和第二图案。 确定图案之间的空间偏移，并存储以供以后用于鉴定基板。 （一个或两个图案可以传达隐写信息，一个图案可以被打印，而另一个图案可以被压印。）智能手机可以感测这些图案，确定空间偏移，并检查所确定的偏移是否与早先存储的偏移匹配 ，以判断底物是否可靠。 另一种布置通过使用以导致图案之间的空间偏移的方式沿着打印幅材的长度逐渐变化的配对图案（其中至少一个通常为隐写水印图案）来实现产品包装的串行化。 另外的其它布置包括传送随时间降解的图案的基底，例如指示新鲜度或加压条件。 还详细介绍了各种各样的其他功能和安排。

公开(公告)号：WO2010036224A1

公开(公告)日：2010-04-01

申请号：PCT/US2008/011209

申请日：2008-09-26

Applicant: THOMSON LICENSING ,  LIN, Wan-yi ,  HE, Shan ,  BLOOM, Jeffrey, Adam

Inventor： LIN, Wan-yi ,  BLOOM, Jeffrey, Adam

IPC: G06T1/00

CPC classification number: G06T1/005 ,  G06T2201/0063 ,  H03M13/1515 ,  H03M13/63 ,  H04N1/32144 ,  H04N2201/3236 ,  H04N2201/3269 ,  H04N2201/3284

Abstract: A method and system of detecting colluders conducting a collusion attack including a minority-type collusion attack on a digital product includes the generation of codewords used as watermarks in the digital product. The inner code of the codewords is generated using permutations of rows in a Hadamard matrix and concatenating them together. A typical outer code of the codeword is the Reed Solomon code. An adaptive detector is able to accurately detect one of three or more colluders of a minority-type attack. Prior art schemes using an error correcting code-based watermarking mechanism with an inner code fail to detect colluders with a minority-type collusion attack which includes three colluders.

Abstract translation: 在数字产品上进行包括少数型串谋攻击的共谋攻击检测共谋者的方法和系统包括在数字产品中生成用作水印的码字。 使用Hadamard矩阵中的行排列来生成码字的内部代码，并将它们连接在一起。 码字的典型外码是里德所罗门码。 一个自适应检测器能够准确地检测少数型攻击的三个或更多个共谋者中的一个。 使用具有内部代码的基于纠错码的水印机制的现有技术方案不能检测包含三个共谋者的少数型串谋攻击的共谋者。

公开(公告)号：WO2005027517A1

公开(公告)日：2005-03-24

申请号：PCT/IB2004/051575

申请日：2004-08-26

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  VAN DER VEEN, Minne ,  LEMMA, Aweke, N. ,  BRUEKERS, Alphons, A., M., L.

Inventor： VAN DER VEEN, Minne ,  LEMMA, Aweke, N. ,  BRUEKERS, Alphons, A., M., L.

IPC: H04N7/08

CPC classification number: H04N21/235 ,  G06T1/005 ,  G06T2201/0063 ,  G10L19/018 ,  G11B20/00086 ,  G11B20/00144 ,  G11B20/00891 ,  G11B20/00905 ,  H04N1/00005 ,  H04N1/00037 ,  H04N1/32144 ,  H04N1/3232 ,  H04N21/435 ,  H04N2201/3239 ,  H04N2201/327

Abstract: The invention relates to watermarking systems, which irregularly change the embedded watermark so as to avoid hacking the system by averaging-attacks. In averaging­attacks, segments of the watermarked signal are accumulated. This causes the host signal to be cancelled out whereas the embedded watermark accumulates coherently. A watermark A thus determined is then subtracted by a hacker from the watermarked signal. This invention exploits the insight that the hacker does not know when the embedded watermark changes (from A to B, or from A to none). Accordingly, fragments of the hacked signal will contain the negative watermark -A being unintentionally embedded by the hacker. This causes the watermark detector to produce a correlation peak of opposite polarity. The invention resides in the detection of such a negative peak, and concluding therefrom that the signal has been tampered. The payload of the watermark is preserved. This provides the possibility to trace back the hacker.

Abstract translation: 本发明涉及水印系统，其不规则地改变嵌入的水印，以避免通过平均攻击来攻击系统。 在平均化攻击中，积分了水印信号的片段。 这使得主机信号被抵消，而嵌入的水印相干地累积。 这样确定的水印A然后由黑客从加水印的信号中减去。 本发明利用了黑客不知道何时嵌入的水印变化（从A到B，或从A变为无）的见解。 因此，被黑客信号的碎片将包含由黑客无意嵌入的负水印-A。 这使得水印检测器产生相反极性的相关峰值。 本发明在于检测这样一个负峰值，并从中得出结论信号已被篡改。 保留水印的有效载荷。 这样可以追溯黑客。

公开(公告)号：WO02019589A1

公开(公告)日：2002-03-07

申请号：PCT/US2001/026505

申请日：2001-08-27

IPC: G06F1/00 ,  G06F21/00 ,  G06T1/00 ,  G11B20/00 ,  H04L29/06 ,  H04N1/32 ,  H04N5/913 ,  H04N21/2389 ,  H04K1/00

CPC classification number: G06F21/10 ,  G06F2221/0737 ,  G06T1/005 ,  G06T2201/0063 ,  G11B20/00086 ,  G11B20/00905 ,  H04L63/12 ,  H04N1/32144 ,  H04N1/32304 ,  H04N5/913 ,  H04N21/23892 ,  H04N2005/91335 ,  H04N2201/3235 ,  H04N2201/3239 ,  H04N2201/327

Abstract: A system for embedding and detecting digital watermarks, e.g., for copyright protection of digital content distributed via the Internet (170) or other channels. Different copies of content, such as audio data, are formed with a common watermark (CW), and different transaction watermarks (TW). Based on a user (180) transaction request, portions of the different copies of the content are assembled to provide a copy with a unique sequence of TWs associated with the user (180). A copy of content which is subsequently located can be analyzed to determine if it has been used in a collusion attack, where a pirate attempts to modify the watermarks, e.g., in an averaging or cut-and-splice attack. The CWs are provided in time-aligned intervals of the different copies of the content so they are not modified by the attack. Content from different web sites can be analyzed (312) by first determining if a particular CW is embedded in the content (315), and, if so, recovering the TW (322) to identify the unauthorized distributor.

Abstract translation: 一种用于嵌入和检测数字水印的系统，例如用于经由因特网（170）或其他信道分发的数字内容的版权保护。 使用公共水印（CW）和不同的事务水印（TW）形成诸如音频数据的不同的内容副本。 基于用户（180）交易请求，组合内容的不同副本的部分以提供具有与用户（180）相关联的TW的唯一序列的副本。 可以分析随后定位的内容的副本，以确定其是否已被用于串通攻击，其中盗版者尝试修改水印，例如在平均或剪切和拼接攻击中。 CW以内容的不同副本的时间对齐的间隔提供，使得它们不被攻击修改。 可以通过首先确定特定CW是否嵌入在内容中（315）来分析不同网站的内容（312），如果是，则恢复TW（322）以识别未经授权的分发者。

公开(公告)号：WO00016546A1

公开(公告)日：2000-03-23

申请号：PCT/JP1999/004890

申请日：1999-09-08

IPC: H04N1/387 ,  G06T1/00 ,  G09C5/00

CPC classification number: G06T1/005 ,  G06T2201/0052 ,  G06T2201/0063

Abstract: A predetermined element of a matrix F produced by Fourier transform of the original image data P0 is specified (Step S122). An infinitesimal component DELTA F of a predetermined size is added to the real part FR or the imaginary part FI of the element (Steps S124, S126). By taking the symmetry of the Fourier spectrum into consideration, the infinitesimal component DELTA F is subtracted. A phase difference pattern W01 corresponding to the infinitesimal component DELTA F is embedded in the image formed by inverse-transforming the matrix to which the infinitesimal component DELTA F is added. The pattern cannot be taken out of the image in which the phase difference pattern is embedded or cannot be erased by an overwrite attack if the original image is concealed. Even if different watermark information is overwritten by a like algorithm on data in which an electronic watermark is embedded, the electronic watermark embedded in the original data can be taken out. A similar processing can be applied to the region obtained by wavelet transformation and comprising low-frequency components.

Abstract translation: 指定通过原始图像数据P0的傅里叶变换产生的矩阵F的预定元素（步骤S122）。 将预定尺寸的无穷小分量DELTA F添加到元件的实部FR或虚部FI（步骤S124，S126）。 通过考虑傅立叶频谱的对称性，减去无穷小分量DELTA F。 对应于无穷小分量DELTA F的相位差图案W01嵌入在通过逆变换添加了无穷小分量DELTA F的矩阵形成的图像中。 如果隐藏了原始图像，则不能从嵌入相位差图案的图像中取出图案，或者如果隐藏图像，则不能被覆盖攻击擦除。 即使不同的水印信息被嵌入电子水印的数据上的类似算法覆盖，也可以取出嵌入在原始数据中的电子水印。 类似的处理可以应用于通过小波变换获得并包括低频分量的区域。

公开(公告)号：WO99010858A2

公开(公告)日：1999-03-04

申请号：PCT/US1998/017833

申请日：1998-08-28

IPC: G06F1/00 ,  G06F21/00 ,  G06T1/00 ,  G11B20/00 ,  H04N1/32 ,  H04N5/913 ,  G09C3/06

CPC classification number: H04N5/913 ,  G06F21/10 ,  G06F2221/0737 ,  G06T1/005 ,  G06T1/0071 ,  G06T2201/0063 ,  G06T2201/0081 ,  G06T2201/0083 ,  G11B20/00086 ,  G11B20/00884 ,  H04N1/32144 ,  H04N1/32154 ,  H04N1/32165 ,  H04N1/32304 ,  H04N2005/91335 ,  H04N2201/3233 ,  H04N2201/3236 ,  H04N2201/324 ,  H04N2201/327

Abstract: A watermarking procedure wherein each of a set of copies of the work has a slightly-modified form of a "baseline" watermark that is placed within a critical region of the data. The slight variations in the watermarks, however, are not perceptually visible and do not interfere with the work. If multiple persons collude to attempt to create an "illicit" copy of the work (i.e., a copy without a watermark), however, at least one of the modified watermarks is present in the copy, thereby identifying both the illicit copy and the copier.

Abstract translation: 一种水印过程，其中作品的一组副本中的每一个具有放置在数据的关键区域内的“基线”水印的稍微修改形式。 然而，水印的轻微变化在感知上不可见，不会干扰工作。 然而，如果多个人串通尝试创建作品的“非法”副本（即，没有水印的副本），那么至少一个修改的水印存在于副本中，从而识别非法复制和复印机 。

公开(公告)号：EP2870561A1

公开(公告)日：2015-05-13

申请号：EP13733283.9

申请日：2013-07-01

Applicant: Viaccess

Inventor： CLISSON, Laurent

IPC: G06F21/10 ,  G06F17/22

CPC classification number: H04N1/32144 ,  G06F17/2217 ,  G06F21/10 ,  G06F2221/0737 ,  G06F2221/074 ,  G06F2221/0746 ,  G06F2221/0748 ,  G06T1/0071 ,  G06T11/60 ,  G06T2201/0062 ,  G06T2201/0063 ,  G06T2201/0064 ,  H04N1/32272 ,  H04N1/32304 ,  H04N2201/3239 ,  H04N2201/327

Abstract: This method of water-marking digital books with parameters comprises: - the formulation (56) for each parameter of a new character font on the basis of a pre-existing font, by creating at least one new code‑glyph pair, - the formulation (58) of a new text coded on the basis of a pre-existing coded text by replacing in the pre-existing coded text at least one code or group of codes of the pre-existing font making it possible to display a character or a combination of characters of the digital book by the code or the group of codes of the new font making it possible to display the graphically identical character or the combination of characters on any screen, this code or this group of codes of the new font comprising at least the code of the new code‑glyph pair, - the provision (64) in the guise of a watermarked digital book of the new coded text and of the new font.

公开(公告)号：EP1324262B1

公开(公告)日：2009-01-28

申请号：EP02258552.5

申请日：2002-12-11

Applicant: SONY UNITED KINGDOM LIMITED

Inventor： Pelly, Jason Charles ,  Tapson, Daniel Warren

IPC: G06T1/00

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

公开(公告)号：EP1879390A2

公开(公告)日：2008-01-16

申请号：EP07111451.6

申请日：2007-06-29

Applicant: FRANCE TELECOM

Inventor： Liu, Zhongxuan ,  Lian, Shiguo ,  Wang, Ronggang ,  Ren, Zhen

IPC: H04N7/167

CPC classification number: H04N19/467 ,  G06T1/0085 ,  G06T2201/0053 ,  G06T2201/0063 ,  G06T2201/0083 ,  H04N21/234381 ,  H04N21/8358

Abstract: In a combined video de-synchronization and compression method for processing a raw video stream comprising a first sequence of successive raw video frames in order to obtain a resulting processed video stream comprising a second sequence of coded frames, the successions of a first phase of selecting frames to be space and/or time-de-synchronized and allocating to each selected frame a category such as I-frame, P-frame, P-frame or F-frame (for "fractional") with reference to known motion compensated and transform hybrid coding standards such as MPEG-2 or the H-264 compression standard; and a second phase of a single one-stroke processing of said raw video stream consisting of processing successively the frames selected with a combined time de-synchronization and compression process using a common motion estimation processing step. The method is particularly suited to video fingerprinting by blind watermarking.

Abstract translation: 在用于处理原始视频流，以便获得所得到的处理后的视频流包括经译码的帧的第二序列，在选择的第一阶段的继承包括连续的原始视频帧的第一序列中的组合视频去同步和压缩方法 帧是空间和/或时间的去同步和分配给每个所选择的帧类别：如I帧，P帧，P帧或F-帧（对于“分数”），参照已知的运动补偿和 变换混合编码标准：如MPEG-2或H-264压缩标准; 和Said原始视频流由...组成的处理的依次使用通常的运动检测处理步骤的组合时间去同步和压缩处理所选择的帧中的单个行程的处理的第二阶段。 该方法是通过盲水印特别适合于视频指纹识别。

公开(公告)号：EP1394736A3

公开(公告)日：2007-12-12

申请号：EP03253663.3

申请日：2003-06-10

Applicant: SONY UNITED KINGDOM LIMITED

Inventor： Tapson, Daniel Warren

IPC: G06T1/00

CPC classification number: H04N1/32154 ,  G06T1/005 ,  G06T2201/0052 ,  G06T2201/0063 ,  G06T2201/0065 ,  G06T2201/0081 ,  H04N1/32165 ,  H04N1/3217 ,  H04N1/32277 ,  H04N2201/3235 ,  H04N2201/327

Abstract: A detecting data processing apparatus determines whether one or more code words of a predetermined set of code words are present in a suspected version of a material item. The apparatus comprises a registration processor operable to associate samples of the suspected version with samples of a copy of the original material item, a recovery processor and a detection processor. The recovery processor is operable to generate a recovered code word by comparing the registered copy of the original and the suspect material items. The detection processor is operable to detect one or more code words from a correlation between the recovered code word and the code words from the set. The registration processor is operable to form at least one reduced-bandwidth-version of the material item and to associate the suspected version and the copy of the material item in accordance with a comparison between the reduced-bandwidth-versions of the suspected version and the original material item.
The registration of the suspected version and the original version of the material item is typically required in order to improve a likelihood of correctly recovering a code word from the suspected version. For material items such as video recordings of motion picture films, a substantial number of samples may need to be associated in order to effect the registration process. As a result, the registration process may be time consuming or at least computationally difficult. However, by forming reduced-bandwidth-versions of the suspected version and the original version of the material items, a corresponding reduction in the time taken to perform the registration process is provide in accordance with the bandwidth reduction.

Abstract translation: 检测数据处理设备确定预定的一组码字中的一个或多个码字是否存在于材料项目的疑似版本中。 所述设备包括注册处理器，所述注册处理器可操作以将所述可疑版本的样本与所述原始资料项目的副本的样本，恢复处理器和检测处理器相关联。 恢复处理器可操作以通过比较原件的登记副本和可疑材料项目来生成恢复的代码字。 检测处理器可操作用于从恢复的码字和来自该组的码字之间的相关性中检测一个或多个码字。 注册处理器可操作用于形成至少一个减少带宽版本的材料项目并且根据可疑版本的减少带宽版本与该材料项目的副本之间的比较来将该可疑版本与该材料项目的副本相关联 原材料项目。 通常需要注册怀疑版本和素材项目的原始版本，以提高从怀疑版本正确恢复代码字的可能性。 对于诸如电影胶片的录像等重要物品，可能需要关联大量样本以实现注册过程。 结果，注册过程可能耗时或至少在计算上困难。 然而，通过形成怀疑版本的减少带宽版本和重要资料项的原始版本，相应地减少了执行注册过程所花费的时间，这是根据带宽减少来提供的。