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公开(公告)号：US20050108242A1
公开(公告)日：2005-05-19
申请号：US10496544
申请日：2002-10-31
CPC分类号： G06F16/48
摘要： A method of maintaining a database comprising a fingerprint of and an associated set of metadata for each of a number of multimedia objects. Respective portions (201, 202, 203, 204, 205) of the database are distributed over respective file sharing clients (101-105) connected to a file sharing network (100) arranged for sharing said number of multimedia objects. File sharing clients (101-105) can maintain their own respective portions (201-205) of the database, or transmit fingerprints and metadata to another file sharing client. In the latter case, the other file sharing client is preferably a supermode in the file sharing network (100).
摘要翻译： 一种维护数据库的方法，所述数据库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。 数据库的相应部分（201,202,203,204,205）分布在连接到被配置为共享所述多个多媒体对象的文件共享网络（100）的相应文件共享客户端（101-105）上。 文件共享客户端（101 - 105）可以维护其各自的数据库部分（201 - 205），或将指纹和元数据传输到另一个文件共享客户端。 在后一种情况下，其他文件共享客户端优选地是文件共享网络（100）中的超级代码。
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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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公开(公告)号：US07127065B1
公开(公告)日：2006-10-24
申请号：US09716907
申请日：2000-11-20
CPC分类号： G06T1/0071 , G06T1/0028 , H04N5/913 , H04N2005/91335 , H04N2201/324
摘要： In a method and arrangement for embedding and detecting a watermark in an information signal, the embedded watermark (Wi) is selected (13) from a plurality of watermarks (W1 . . . WN) in dependence upon a property P of the signal. An example of such a property is the distribution of luminance values of the current video image as calculated by an analysis circuit (12). The corresponding watermark detector performs the same operation: the watermark being looked for depends on the same signal property. It is achieved with the invention that the embedded watermark changes from time to time as a function of the information signal content, so that it cannot easily be hacked.
摘要翻译： 在用于在信息信号中嵌入和检测水印的方法和装置中，从多个水印（W 1＆lt; 1＆gt; 1）中选择（13）（13） 根据信号的性质P，... W N N）。 这种性质的一个例子是由分析电路（12）计算出的当前视频图像的亮度分布。 相应的水印检测器执行相同的操作：正在查找的水印取决于相同的信号属性。 通过本发明实现了嵌入的水印随着信息信号内容的不断变化，从而不易被黑客入侵。
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4.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：US06701062B1
公开(公告)日：2004-03-02
申请号：US09327996
申请日：1999-06-08
申请人： Johan Cornelis Talstra , Mark Hollar , Kordian Kurowski , David Collier , William Wrobleski , James Holzgrafe , Antonius Adrianus Cornelis Maria Kalker , Derek Nelson , Patrice Capitant , John O. Ryan
发明人： Johan Cornelis Talstra , Mark Hollar , Kordian Kurowski , David Collier , William Wrobleski , James Holzgrafe , Antonius Adrianus Cornelis Maria Kalker , Derek Nelson , Patrice Capitant , John O. Ryan
IPC分类号： H04N591
CPC分类号： G06T1/0085 , G06T2201/0064 , H04N5/913 , H04N2005/91314 , H04N2005/91335
摘要： Method and apparatus for providing generational copy control of a video signal. A digital video signal contains content information, first supplemental information and second supplemental information. The first supplemental information is represented by a watermark pattern, the second by a control pattern. Copying of the content information is only permitted if a predetermined combination of the first and second supplemental information is present. Pseudo-sync pulses are added to a blanking interval of an analog video signal converted from a digital video signal, the pulses representing the second supplemental information.
摘要翻译： 用于提供视频信号的代数复制控制的方法和装置。 数字视频信号包含内容信息，第一补充信息和第二补充信息。 第一补充信息由水印图案表示，第二补充信息由控制图案表示。 如果存在第一和第二补充信息的预定组合，则仅允许复制内容信息。 将伪同步脉冲添加到从数字视频信号转换的模拟视频信号的消隐间隔，该脉冲表示第二补充信息。
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6.发明授权Method and system for embedding extra information, method and system for decoding 有权嵌入额外信息的方法和系统，解码方法和系统公开(公告)号：US06625298B1
公开(公告)日：2003-09-23
申请号：US09857915
申请日：2001-06-11
申请人： Maurice Jerome Justin Jean-Baptiste Maes , Geert Florimond Gerard Depovere , Antonius Adrianus Cornelis Maria Kalker
发明人： Maurice Jerome Justin Jean-Baptiste Maes , Geert Florimond Gerard Depovere , Antonius Adrianus Cornelis Maria Kalker
IPC分类号： H04K100
CPC分类号： G06T1/0085 , H04N1/32144 , H04N5/913 , H04N21/23892 , H04N2005/91335
摘要： The invention relates to a method and a system (100) for embedding extra information in an input signal (101). Groups of one or more candidate frames in the input signal (101) are associated with respective portions of the extra information. Each group is edited in dependence on its associated respective portion, for example by deleting it to represent a zero bit in the respective portion and duplicating it to represent a one. The invention further relates to a method and system (200) for decoding extra information embedded in an input signal (201) by comparing it with an original input signal (204) and decoding the differences into the extra information. For example, missing groups of candidate frames are decoded into a zero bit, and duplicated candidate frames are decoded into a one bit.
摘要翻译： 本发明涉及一种用于在输入信号（101）中嵌入额外信息的方法和系统（100）。 输入信号（101）中的一个或多个候选帧的组与额外信息的相应部分相关联。 每个组根据其相关的相应部分进行编辑，例如通过删除它来表示相应部分中的零比特并将其复制以表示一个。 本发明还涉及一种用于通过将嵌入在输入信号（201）中的附加信息与原始输入信号（204）进行比较并将该差异解码为额外信息来解码附加信息的方法和系统（200）。 例如，丢失的候选帧组被解码为零位，并且复制的候选帧被解码为一位。
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公开(公告)号：US07996678B2
公开(公告)日：2011-08-09
申请号：US10480339
申请日：2002-06-18
IPC分类号： H04L9/00
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：US07478242B2
公开(公告)日：2009-01-13
申请号：US10498965
申请日：2002-12-09
IPC分类号： G06K9/00
CPC分类号： G06T1/005 , G06T1/0028 , G06T1/0085 , G06T2201/0064 , G06T2201/0065 , G06T2201/0083 , G11B19/122 , G11B20/00086 , G11B20/00123 , G11B20/00695 , G11B20/00702 , G11B20/00768 , G11B20/00884 , G11B2220/2562 , H04N1/32144 , H04N19/14 , H04N19/467 , H04N2201/3236
摘要： This invention relates to a method of embedding a watermark pattern with a payload in a time dependent information signal, comprising the steps of determining a number of robust signatures in the information signal, creating the payload being dependent of at least one of the number of robust signatures and a predefined message, embedding the watermark pattern according to the payload in the information signal. The invention also relates to a corresponding method and arrangement for detecting a watermark pattern in an information signal.
摘要翻译： 本发明涉及一种在时间依赖信息信号中嵌入具有有效负载的水印图案的方法，包括以下步骤：确定信息信号中的健壮签名的数量，创建有效负载依赖于鲁棒数量中的至少一个 签名和预定义消息，根据有效载荷将信息信号嵌入水印图案。 本发明还涉及用于检测信息信号中的水印图案的相应方法和装置。
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公开(公告)号：US07286451B2
公开(公告)日：2007-10-23
申请号：US10521134
申请日：2003-06-23
申请人： Gijsbrecht Carel Wirtz , Antonius Adrianus Cornelis Maria Kalker , Antonius Adriaan Maria Staring , Jaap Andre Haitsma , Johan Paul Marie Gerald Linnartz
发明人： Gijsbrecht Carel Wirtz , Antonius Adrianus Cornelis Maria Kalker , Antonius Adriaan Maria Staring , Jaap Andre Haitsma , Johan Paul Marie Gerald Linnartz
IPC分类号： G11B7/00
CPC分类号： G11B20/0076 , G11B20/00086 , G11B20/00123
摘要： A digital media recorder and a method of controlling such are provided. During attempts to copy media content, sub-sequences are extracted from an input media sequence. A digital fingerprint of the sub-sequence is calculated and compared with at least one first reference fingerprint from a database. The outcome of the comparison determines the action to take in the further processing. Recording of the input media sequence on a media carrier is either allowed or obstructed, e.g. disallowed. In the case recording of the sequence is allowed, the database is updated with information that the digital media sequence has been recorded.
摘要翻译： 提供数字媒体记录器及其控制方法。 在尝试复制媒体内容期间，从输入媒体序列中提取子序列。 计算子序列的数字指纹，并将其与来自数据库的至少一个第一参考指纹进行比较。 比较的结果决定了进一步处理中采取的行动。 媒体载体上的输入媒体序列的记录被允许或阻止，例如 不允许 在允许记录序列的情况下，利用已经记录了数字媒体序列的信息更新数据库。
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公开(公告)号：US07168083B2
公开(公告)日：2007-01-23
申请号：US09908597
申请日：2001-07-19
IPC分类号： H04N9/00
CPC分类号： G06T1/005 , G06F17/30802 , G06T1/0028 , G06T2201/0065 , H04H20/14 , H04H20/31 , H04H2201/50
摘要： A method and arrangement are disclosed for distributing multimedia content such that that the actual distribution of said content can be monitored in an efficient and reliable manner. The invention combines the extensiveness of feature extraction and the robustness of watermarking. Characteristic features of the content, e.g. luminance distribution, are extracted (11) to constitute a signature (SIG) of the content. In addition, a watermark is embedded (12) having a payload representing an index (ID) in a database (10) in which the content to be monitored is stored. The watermark serves as an index for limiting the database search needed for monitoring the signatures.
摘要翻译： 公开了用于分发多媒体内容的方法和装置，使得可以以有效和可靠的方式监视所述内容的实际分布。 本发明结合了特征提取的广泛性和水印的鲁棒性。 内容的特征，例如 提取亮度分布（11）以构成内容的签名（SIG）。 此外，在数据库（10）中嵌入了具有表示索引（ID）的有效载荷的水印（12），在数据库（10）中存储要监视的内容。 该水印作为用于限制监视签名所需的数据库搜索的索引。
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