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公开(公告)号：US20110231882A1
公开(公告)日：2011-09-22
申请号：US13121198
申请日：2009-09-02
IPC分类号： H04N7/18
CPC分类号： H04H60/80 , H04H60/43 , H04H60/58 , H04H60/59 , H04H2201/90
摘要： The present invention provides a method of communicating between two devices, wherein these devices receive a signal requesting a second device to play a first broadcast audio/video content being played by a first device. The method comprises a step of generating a fingerprint of the first broadcast audio/video content being played on said first device and a series of fingerprints of a series of broadcast audio/video contents received by the second device; and a step of identifying said first broadcast audio/video content from said series of broadcast audio/video contents in accordance with said fingerprint of the first broadcast audio/video content and said series of fingerprints.
摘要翻译： 本发明提供了一种在两个设备之间通信的方法，其中这些设备接收请求第二设备的信号来播放由第一设备正在播放的第一广播音频/视频内容。 该方法包括：生成在所述第一设备上正在播放的第一广播音频/视频内容的指纹和由第二设备接收的一系列广播音频/视频内容的一系列指纹的步骤; 以及根据第一广播音频/视频内容和所述一系列指纹的所述指纹，从所述一系列广播音频/视频内容中识别所述第一广播音频/视频内容的步骤。
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公开(公告)号：US07523312B2
公开(公告)日：2009-04-21
申请号：US10495283
申请日：2002-10-24
IPC分类号： G06F7/00
CPC分类号： G06F17/30017 , Y10S707/99932 , Y10S707/99933 , Y10S707/99942
摘要： A method of updating a database (211) comprising a fingerprint of and an associated set of metadata for each of a number of multimedia objects, A multimedia object and a set of metadata for the multimedia object is downloaded from a file sharing client (101-105). A fingerprint is computed from the multimedia object, and the computed fingerprint and the obtained set of metadata are included in the database (211). The database (211) can be maintained by a central server (210), or be maintained in a distributed fashion by servers (404) running on the file sharing clients (101-105). The database (211) in this way accumulates plural sets of metadata associated with one particular fingerprint. When a sufficient number of sets has been collected, a definite set can be determined using filtering techniques.
摘要翻译： 一种更新数据库（211）的方法，其包括多个多媒体对象中的每一个的指纹和相关的一组元数据，多媒体对象和多媒体对象的一组元数据从文件共享客户机（101- 105）。 从多媒体对象计算指纹，计算出的指纹和获得的元数据集合包括在数据库（211）中。 可以由中央服务器（210）维护数据库（211），或者通过在文件共享客户端（101-105）上运行的服务器（404）以分布式方式维护数据库。 数据库（211）以这种方式累积与一个特定指纹相关联的多组元数据。 当已经收集了足够数量的集合时，可以使用过滤技术来确定确定集合。
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3.发明授权公开(公告)号：US06707930B2
公开(公告)日：2004-03-16
申请号：US10003064
申请日：2001-11-02
IPC分类号： H04K100
CPC分类号： G06T1/0028 , G06T2201/0081 , G06T2201/0202
摘要： The invention relates to a method of embedding a watermark W in an information signal P, to a corresponding arrangement for embedding a watermark W in an information signal P, to an information signal with an embedded watermark, and to a storage medium 50 having stored thereon an information signal P with an embedded watermark W. The watermark is embedded in the information signal by deriving sub-patterns Wi from said watermark pattern W, wherein the energy spectrum concentration of each sub-pattern Wi has a dominent orientation. The local weight factors &lgr;(P) for said watermark sub-patterns Wi are determined based on the local energy spectrum of the information signal P in said dominent orientation. Said watermark sub-patterns Wi are locally weighted using said determined local weight factors &lgr;(P). Finally, the locally weighted watermark sub-patterns (Wi) are added to the information signal P.
摘要翻译： 本发明涉及将信息信号P中的水印W嵌入信息信号P中嵌入水印W的对应装置的方法，以及存储在其上的存储介质50 具有嵌入水印W的信息信号P.通过从所述水印图案W导出子图案Wi，将水印嵌入在信息信号中，其中每个子图案Wi的能谱浓度具有主导取向。 基于所述主导方向上的信息信号P的局部能量谱，确定所述水印子模式Wi的局部加权因子λ（P）。 使用所述确定的局部加权因子λ（P）对所述水印子模式Wi进行局部加权。 最后，将局部加权水印子模式（Wi）加到信息信号P。
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公开(公告)号：US20110066723A1
公开(公告)日：2011-03-17
申请号：US12922580
申请日：2009-03-18
IPC分类号： G06F15/173
CPC分类号： G06Q30/00
摘要： Client terminals report an easy-to-calculate identifier such as the Internet URL or a cryptographic hash of the content to a server. The server collects and counts the reported identifiers so as to obtain preliminary statistics. By aggregating these reported identifiers into the preliminary statistics, identifiers are revealed that are likely popular content. The server selects one or more identifiers from the preliminary statistics and makes these available to at least a subset of clients. The clients that obtain these one or more identifiers then access content and compute the easy-to-calculate identifiers as usual. If the computed identifier matches one of the identifiers obtained from the server, the client will additionally extract a watermarked identifier or compute a digital fingerprint of the content in question and report this to the server. The server then uses the received identifier or fingerprint to create final statistics by aggregating the preliminary statistics.
摘要翻译： 客户终端向服务器报告易于计算的标识符，例如Internet URL或内容的加密散列。 服务器收集并计算报告的标识符，以获取初步统计信息。 通过将这些报告的标识符聚合到初步统计信息中，显示可能是受欢迎的内容的标识符。 服务器从初步统计信息中选择一个或多个标识符，并使这些标识符可用于至少一个客户端子集。 获得这些一个或多个标识符的客户端然后访问内容并像往常一样计算易于计算的标识符。 如果计算出的标识符匹配从服务器获得的一个标识符，客户端将另外提取水印标识符或计算所讨论的内容的数字指纹，并将其报告给服务器。 然后，服务器使用接收到的标识符或指纹，通过汇总初步统计信息来创建最终统计信息。
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公开(公告)号：US07639599B2
公开(公告)日：2009-12-29
申请号：US10495282
申请日：2002-10-28
申请人： Minne Van Der Veen , Jaap Andre Haitsma , Antonius Adrianus Cornelis Maria Kalker , Alphons Antonius Maria Lambertus Bruekers
发明人： Minne Van Der Veen , Jaap Andre Haitsma , Antonius Adrianus Cornelis Maria Kalker , Alphons Antonius Maria Lambertus Bruekers
IPC分类号： H04J11/00
CPC分类号： G11B20/00891 , G11B20/00086
摘要： Disclosed is a method of adjusting a supplementary data signal (wm(n)) to be embedded in an information signal (x(n)), for example an audio signal. The method comprises the steps of determining (301) a position where a predetermined property of the information signal exceeds a predetermined threshold, e.g. an attack position, and suppressing (302) the supplementary data signal in a predetermined neighbourhood of the determined position.
摘要翻译： 公开了一种调整要嵌入在信息信号（x（n））中的补充数据信号（wm（n））的方法，例如音频信号。 该方法包括以下步骤：确定（301）信息信号的预定属性超过预定阈值的位置，例如， 攻击位置，并且在所确定的位置的预定邻域中抑制（302）补充数据信号。
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公开(公告)号：US20090276635A1
公开(公告)日：2009-11-05
申请号：US11721060
申请日：2005-12-07
申请人： Constant Paul Marie Jozef Baggen , Jaap Andre Haitsma , Antonius Adriaan Maria Staring , Johan Cornelis Talstra
发明人： Constant Paul Marie Jozef Baggen , Jaap Andre Haitsma , Antonius Adriaan Maria Staring , Johan Cornelis Talstra
CPC分类号： G11B20/00086 , G11B20/00094 , G11B20/00123 , G11B20/0021 , G11B20/00369 , G11B20/00557 , G11B20/00731 , G11B20/00797 , G11B20/0092
摘要： In order to efficiently prevent the save-and-restore attack on usage rights associated with digital work, these usage rights are protected by a hidden channel. In order to make it a difficult or expensive to manipulate the hidden channel, a device is proposed comprising: writing means (34) for writing on a record carrier (20) said digital work (DW) and attached usage right information (22) defining one or more conditions to be satisfied in order for the usage right to be exercised,—fingerprint extraction means (23) for deriving fingerprint data (24) from physically uncontrollable, changeable non-uniformities on said record carrier (20), and authentication means (25) for generating authentication data (26) from said fingerprint data (24) and said usage right information (22), said authentication data being provided for authenticating said usage right information, said writing means (34) being adapted for writing said authentication data (25) on said record carrier (20).
摘要翻译： 为了有效地防止与数字作品相关的使用权的保存和恢复攻击，这些使用权利被隐藏的信道保护。 为了使操作隐藏通道变得困难或昂贵，提出了一种设备，包括：写入装置（34），用于在记录载体（20）上写入所述数字作业（DW）和附加的使用权信息（22），其定义 为了使用权被行使而要满足的一个或多个条件， - 指纹提取装置（23），用于从所述记录载体（20）上的物理上不可控制的，可变的非均匀性导出指纹数据（24）;以及认证装置 （25），用于从所述指纹数据（24）和所述使用权信息（22）生成认证数据（26），所述认证数据被提供用于认证所述使用权信息，所述写入装置（34）适于写入所述认证 所述记录载体（20）上的数据（25）。
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公开(公告)号：US20080263360A1
公开(公告)日：2008-10-23
申请号：US11800904
申请日：2007-05-07
申请人： Jaap Andre Haitsma , Antonius Andrianus Cornelis Maria Kalker , Constant Paul Marie Jozef Baggen , Job Cornelis Oostveen
发明人： Jaap Andre Haitsma , Antonius Andrianus Cornelis Maria Kalker , Constant Paul Marie Jozef Baggen , Job Cornelis Oostveen
CPC分类号： H04H60/37 , G06F17/30743 , G06F17/30787 , G06F17/30802 , G06K9/00744 , G06T1/0028 , G06T1/005 , G06T2201/0051 , G06T2201/0061 , G06T2201/0065 , G10H1/0058 , G10H2210/295 , G10H2240/061 , H03M7/30 , H04H60/56 , H04H2201/90 , H04N19/467
摘要： Hashes are short summaries or signatures of data files which can be used to identify the file. Hashing multimedia content (audio, video, images) is difficult because the hash of original content and processed (e.g. compressed) content may differ significantly. The disclosed method generates robust hashes for multimedia content, for example, audio clips. The audio clip is divided (12) into successive (preferably overlapping) frames. For each frame, the frequency spectrum is divided (15) into bands. A robust property of each band (e.g. energy) is computed (16) and represented (17) by a respective hash bit. An audio clip is thus represented by a concatenation of binary hash words, one for each frame. To identify a possibly compressed audio signal, a block of hash words derived therefrom is matched by a computer (20) with a large database (21). Such matching strategies are also disclosed. In an advantageous embodiment, the extraction process also provides information (19) as to which of the hash bits are the least reliable. Flipping these bits considerably improves the speed and performance of the matching process.
摘要翻译： 哈希是数据文件的简短摘要或签名，可用于标识文件。 哈希多媒体内容（音频，视频，图像）是困难的，因为原始内容的哈希和处理（例如压缩的）内容可能会显着不同。 所公开的方法为多媒体内容（例如，音频剪辑）生成鲁棒散列。 音频剪辑被分割成连续的（优选重叠的）帧。 对于每个帧，频谱被分为（15）到频带。 计算每个频带（例如能量）的鲁棒性质（16）并通过相应的散列比特（17）表示。 因此，音频剪辑由二进制散列字的连接表示，每个帧一个。 为了识别可能压缩的音频信号，由计算机（20）与大数据库（21）匹配从其导出的散列字块。 还披露了这种匹配策略。 在有利的实施例中，提取过程还提供关于哪个散列位是最不可靠的信息（19）。 翻转这些位可显着提高匹配过程的速度和性能。
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公开(公告)号：US08452971B2
公开(公告)日：2013-05-28
申请号：US13188813
申请日：2011-07-22
IPC分类号： H04L9/32
CPC分类号： G06T1/0085 , G06T1/0064 , G06T2201/0051 , H04N19/467
摘要： A video watermarking scheme is disclosed, which is designed for the digital cinema format, as it will be used on large projector screens in theaters. The watermark is designed in such a way that it has minimal impact on the video quality, but is still detectable after capture with a handheld camera and conversion to, for instance, VHS, CD-Video or DVD format. The proposed watermarking system only exploits the temporal axis. This makes it invulnerable to geometrical distortions generally caused by such a way of capturing. The watermark is embedded by modulating a global property of the frames (e.g. the mean luminance) in accordance with the samples of the watermark. The embedding depth is preferably locally adapted within each frame to local statistics of the respective image. Watermark detection is performed by correlating the watermark sequence with extracted mean luminance values of a sequence of frames.
摘要翻译： 公开了一种视频水印方案，其被设计用于数字电影格式，因为它将被用于剧院的大型投影仪屏幕上。 水印的设计方式使其对视频质量的影响最小，但在使用手持相机拍摄并转换为例如VHS，CD-Video或DVD格式后，仍然可以检测到水印。 所提出的水印系统仅利用时间轴。 这使得它几何失真通常是由这种捕获方式造成的。 通过根据水印的样本调制帧的全局属性（例如平均亮度）来嵌入水印。 嵌入深度优选地在每个帧内局部地适应于相应图像的局部统计。 通过将水印序列与帧序列的提取的平均亮度值相关联来执行水印检测。
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公开(公告)号：US07921296B2
公开(公告)日：2011-04-05
申请号：US11800904
申请日：2007-05-07
申请人： Jaap Andre Haitsma , Antonius Adrianus Cornelis Maria Kalker , Constant Paul Marie Jozef Baggen , Job Cornelis Oostveen
发明人： Jaap Andre Haitsma , Antonius Adrianus Cornelis Maria Kalker , Constant Paul Marie Jozef Baggen , Job Cornelis Oostveen
IPC分类号： H04L9/00
CPC分类号： H04H60/37 , G06F17/30743 , G06F17/30787 , G06F17/30802 , G06K9/00744 , G06T1/0028 , G06T1/005 , G06T2201/0051 , G06T2201/0061 , G06T2201/0065 , G10H1/0058 , G10H2210/295 , G10H2240/061 , H03M7/30 , H04H60/56 , H04H2201/90 , H04N19/467
摘要： Hashes are short summaries or signatures of data files which can be used to identify the file. The disclosed method generates robust hashes for multimedia content, for example, audio clips. The audio clip is divided into successive (preferably overlapping) frames. For each frame, the frequency spectrum is divided into bands. A robust property of each band (e.g. energy) is computed and represented by a respective hash bit. An audio clip is thus represented by a concatenation of binary hash words, one for each frame. To identify a possibly compressed audio signal, a block of hash words derived therefrom is matched by a computer with a large database. Such matching strategies are also disclosed. In an advantageous embodiment, the extraction process also provides information as to which of the hash bits are the least reliable. Flipping these bits considerably improves the speed and performance of the matching process.
摘要翻译： 哈希是数据文件的简短摘要或签名，可用于标识文件。 所公开的方法为多媒体内容（例如，音频剪辑）生成鲁棒散列。 音频剪辑被分成连续的（优选重叠的）帧。 对于每个帧，频谱被分为频带。 计算每个频带（例如能量）的鲁棒属性，并由相应的散列位表示。 因此，音频剪辑由二进制散列字的连接表示，每个帧一个。 为了识别可能压缩的音频信号，从其导出的散列字块由具有大数据库的计算机匹配。 还披露了这种匹配策略。 在有利的实施例中，提取过程还提供关于哪个散列位是最不可靠的信息。 翻转这些位可显着提高匹配过程的速度和性能。
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公开(公告)号：US20090324199A1
公开(公告)日：2009-12-31
申请号：US12305057
申请日：2007-06-14
申请人： Jaap Andre Haitsma , Vikas Bhargava
发明人： Jaap Andre Haitsma , Vikas Bhargava
IPC分类号： H04N5/91
CPC分类号： H04H60/59 , G06K9/00744 , H04H60/37 , H04H2201/90
摘要： The present invention provides novel techniques for generating more robust fingerprints (1) of video signals (2). Certain embodiments of the invention derive video fingerprints only from blocks (21) in a central portion (22) of each frame (20), ignoring a remaining outer portion (23), the resultant fingerprints (1) being more robust with respect to transformations comprising cropping or shifts. Other embodiments divide each frame (or a central portion of it) into non-rectangular blocks, such as pie-shaped or annular blocks, and generate fingerprints from these blocks. The shape of the blocks can be selected to provide robustness against particular transformations. Pie blocks provide robustness to scaling, and annular blocks provide robustness to rotations, for example. Other embodiments use blocks of different sizes, so that different portions of the frame may be given different weighting in the fingerprint.
摘要翻译： 本发明提供了用于产生视频信号（2）的更强健的指纹（1）的新颖技术。 本发明的某些实施例仅从每个帧（20）的中心部分（22）中的块（21）导出视频指纹，忽略剩余外部部分（23），所得到的指纹（1）相对于转换更加鲁棒 包括种植或转移。 其他实施例将每个框架（或其中心部分）划分成非矩形块，例如饼形或环形块，并从这些块生成指纹。 可以选择块的形状以提供针对特定变换的鲁棒性。 馅饼块提供了坚固的结垢，例如，环形块提供了旋转的鲁棒性。 其他实施例使用不同大小的块，使得可以在指纹中给予帧的不同部分不同的加权。
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