-
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。
-
公开(公告)号：US20070071330A1
公开(公告)日：2007-03-29
申请号：US10579412
申请日：2004-11-08
CPC分类号： G06K9/00496 , G06F16/683 , G06F16/783 , G10L25/48
摘要： The invention relates to methods and apparatus for matching a query data object with a candidate data object by esetracting and comparing fingerprints of said data objects. In an embodiment of the invention apparatus comprising a fingerprint extraction module (110), a fingerprint matching module (210), a statistical module (120) and an identification module is provided. The fingerprint extraction module (110) receives an information signal forming part of a query object and constructs a query fingerprint. The fingerprint matching module (210) compares the query fingerprint to candidates stored in a database (215) to find at least on potentially best matching candidate. Meanwhile, the statistical module determines a statistical model of the query fingerprint so as to, for instance, determine the statistical distribution of certain information inside the query fingerprint. The threshold determiner (120) is arranged, on the basis of the distribution of the query fingerprint to derive an adaptive threshold distance within which the query fingerprint and a potentially best matching candidate may be declared similar by the identification module (130). By setting a threshold which may depend on statistical data derived from the query and/or candidate fingerprint, an improved false acceptance rate F.A.R. may be achieved.
摘要翻译： 本发明涉及通过分析和比较所述数据对象的指纹来将查询数据对象与候选数据对象进行匹配的方法和装置。 在包括指纹提取模块（110）的本发明装置的实施例中，提供了指纹匹配模块（210），统计模块（120）和识别模块。 指纹提取模块（110）接收构成查询对象的一部分的信息信号，构成查询指纹。 指纹匹配模块（210）将查询指纹与存储在数据库（215）中的候选者进行比较，以至少找到潜在的最佳匹配候选。 同时，统计模块确定查询指纹的统计模型，以便例如确定查询指纹内某些信息的统计分布。 阈值确定器（120）基于查询指纹的分布来排列，以导出自适应阈值距离，在该距离内，查询指纹和潜在最佳匹配候选可以由识别模块（130）声明为相似。 通过设置可以依赖于从查询和/或候选指纹导出的统计数据的阈值，改进的错误接受率F.A.R. 可以实现。
-
公开(公告)号：US20060041753A1
公开(公告)日：2006-02-23
申请号：US10529360
申请日：2003-08-11
申请人： Jaap Haitsma
发明人： Jaap Haitsma
IPC分类号： H04L9/00
CPC分类号： G10H1/0058 , G10H2250/135 , G10H2250/161 , G10H2250/235 , G10L19/018 , H04N1/32122 , H04N2201/3235 , H04N2201/3236 , H04N2201/3274
摘要： Fingerprints are bit strings extracted from a media signal (e.g. an audio or video clip) to identify said media signal. Typically, they are derived from a perceptual property of the signal, for example, the spectral energy distribution of an audio fragment or the luminance distribution of a video image. A method and arrangement for extracting a fingerprint is here disclosed which is robust with respect to shifts of the perceptual property. Such shifts occur, inter alia, when the fingerprint is derived from a logarithmically mapped spectral energy distribution of an audio signal and said audio signal is subjected to speed changes. According to the invention, the fingerprint is not derived from the perceptual property as such, but from its auto-correlation function.
摘要翻译： 指纹是从媒体信号（例如，音频或视频剪辑）提取的位串，以识别所述媒体信号。 通常，它们来自于信号的感知特性，例如音频片段的频谱能量分布或视频图像的亮度分布。 这里公开了一种用于提取指纹的方法和装置，其对于感知特性的变化是鲁棒的。 特别地，当指纹从音频信号的对数映射的频谱能量分布导出并且所述音频信号受到速度变化时，发生这种移位。 根据本发明，指纹不是从知觉性质得到的，而是从其自相关函数得出。
-
公开(公告)号：US20070220265A1
公开(公告)日：2007-09-20
申请号：US11570440
申请日：2005-06-08
IPC分类号： H04L9/36
CPC分类号： G06T1/0064
摘要： There is provided a watermark detector (20) including an input for receiving an input signal (Y′) including watermark content (W) to be searched. A first processor (40) of the detector (20) is operable to analyse portions (100, 110, 120) of the signal (Y′) to identify corresponding sets of characteristic properties or fingerprints (P1 to Pq) and associated temporal descriptors (d1 to dq). A communication link to a database (50) is provided for communicating the fingerprints to the database (50) to identify the signal and to determine corresponding temporal descriptors (MT1 to MTq) corresponding to the portions (100, 110, 120) in the original signal. A second processor (220) is included for calculating from a difference between the temporal descriptors (d1 to dq) and the retrieved temporal descriptors (MT1 to MTq) a scaling factor to which the input signal (Y′) has been subjected. The scaling factor is useable for re-scaling the signal and extracting the watermark from the rescaled signal (Y′).
摘要翻译： 提供了一种水印检测器（20），其包括用于接收包括要搜索的水印内容（W）的输入信号（Y'）的输入。 检测器（20）的第一处理器（40）可操作以分析信号（Y'）的部分（100,110,120），以识别特定特性或指纹的对应集合（P < ）和相关联的时间描述符（d <1>至d> q）。 提供到数据库（50）的通信链路用于将指纹传送到数据库（50）以识别信号并且确定相应的时间描述符（MT 到MT ）对应于原始信号中的部分（100,110,120）。 包括第二处理器（220），用于根据时间描述符（d 1> 1至d q q）之间的差值和所检索的时间描述符（MT＆lt; 1＆gt; 1＆ 对于输入信号（Y'）已经经受的缩放因子。 缩放因子可用于重新缩放信号并从重新缩放的信号（Y'）提取水印。
-
公开(公告)号：US20060013451A1
公开(公告)日：2006-01-19
申请号：US10533211
申请日：2003-10-07
申请人： Jaap Haitsma
发明人： Jaap Haitsma
IPC分类号： G06K9/00
CPC分类号： G06F16/683 , G06F16/41 , G06F16/634
摘要： Methods and apparatus are described for matching a set input fingerprint blocks, each fingerprint block representing at least a part of an information signal, with fingerprints stored in a database that identify respective information signals. The method includes selecting a first fingerprint block of the set of input fingerprint blocks (10), and finding at least one fingerprint block in the database that matches the selected fingerprint block (20, 40). A further fingerprint block is then selected from the set of input blocks (60), at a predetermined position from the first selected fingerprint block. A corresponding fingerprint block is then located in the database at the same predetermined position relative to the found fingerprint block (70), and it is determined if the located fingerprint block matches the selected further fingerprint block (80).
摘要翻译： 描述了将设置的输入指纹块（表示信息信号的至少一部分的每个指纹块）与存储在识别各个信息信号的数据库中的指纹进行匹配的方法和装置。 该方法包括选择一组输入指纹块（10）中的第一指纹块，以及找到数据库中匹配所选择的指纹块（20,40）的至少一个指纹块。 然后在从第一选定的指纹块的预定位置处，从该组输入块（60）中选择另外的指纹块。 然后相应的指纹块相对于找到的指纹块位于相同的预定位置的数据库中，并且确定所定位的指纹块是否与所选的另外的指纹块匹配（80）。
-
公开(公告)号：US20050259819A1
公开(公告)日：2005-11-24
申请号：US10518264
申请日：2003-04-12
CPC分类号： H04N1/32101 , G10L25/48 , H04N19/467 , H04N19/60 , H04N19/63 , H04N2201/3236
摘要： Method and apparatus for generating a hash signal representative of a multimedia signal are described. The method includes receiving a bit-stream comprising a compressed multimedia signal, selectively reading from the bit-stream predetermined parameters, and deriving a hash function from the parameters.
摘要翻译： 描述了用于生成表示多媒体信号的散列信号的方法和装置。 该方法包括接收包括压缩多媒体信号的比特流，从比特流预定参数中有选择地读取，以及从参数中导出哈希函数。
-
公开(公告)号：US20060218126A1
公开(公告)日：2006-09-28
申请号：US10548702
申请日：2004-03-03
IPC分类号： G06F17/30
CPC分类号： G06Q10/10 , G06F16/634 , G06F16/68 , G06F16/683 , H04H20/14 , H04H2201/90
摘要： A method of obtaining data associated with a content item, comprising the steps of obtaining (32) an identifier for the content item, performing (33) a database lookup to obtain the data using the identifier and submitting (37) the content item to an output (210) for processing by a human (200) if the database lookup fails to obtain the data, characterized by a step (35) of automatically classifying the content item into one of a number of classes, and by performing at least one of the other steps conditionally based upon the classification of the content item. In an embodiment the content item is submitted to the output only if (36) the database lookup fails to obtain the data and the content item was classified into one of a number of predetermined classes. Also a server (300) and a computer program product arranged to carry out the method.
摘要翻译： 一种获取与内容相关联的数据的方法，包括以下步骤：获取（32）内容项目的标识符，执行（33）数据库查找以使用标识符获得数据，并将内容项目提交给（37）内容项目 输出（210），用于如果所述数据库查找未能获得所述数据，则由人（200）处理，其特征在于，将所述内容项自动分类为多个类别中的一个类别的步骤（35），以及通过执行以下操作中的至少一个： 其他步骤有条件地基于内容项目的分类。 在一个实施例中，只有（36）数据库查找不能获得数据并且内容项目被分类为多个预定类别中的一个时，内容项才被提交给输出。 还有一种服务器（300）和计算机程序产品，用于执行该方法。
-
公开(公告)号：US20050254371A1
公开(公告)日：2005-11-17
申请号：US10521134
申请日：2003-06-23
申请人： Gijsbrecht Wirtz , Antonius Adrianus Kalker , Antonius Staring , Jaap Haitsma , Johan Paul Linnartz
发明人： Gijsbrecht Wirtz , Antonius Adrianus Kalker , Antonius Staring , Jaap Haitsma , Johan Paul Linnartz
CPC分类号： G11B20/0076 , G11B20/00086 , G11B20/00123
摘要： A digital media recorder and method of controlling such is shown. During attempts to copy media content such as audio or a video sequences, 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 the 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. This has the effect of a “speed bump,” which limits the rate at which those copies of media content can be made, i.e. the effect is that of prohibiting more than a given number of copies within a given time frame.
摘要翻译： 示出了数字媒体记录器及其控制方法。 在复制诸如音频或视频序列的媒体内容的尝试期间，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。 这具有限制可以进行这些媒体内容的拷贝的速率的“速度缓冲”的效果，即效果是在给定的时间范围内禁止多于给定的份数。
-
公开(公告)号：US20050108535A1
公开(公告)日：2005-05-19
申请号：US10504706
申请日：2003-01-21
IPC分类号： G06T1/00 , G11B20/00 , H04N1/32 , H04N1/387 , H04N1/40 , H04N5/91 , H04N7/08 , H04N7/081 , H04L9/00
CPC分类号： G06T1/005 , G06T2201/0063 , G11B20/00086 , G11B20/00905 , H04N1/32144 , H04N1/32304 , H04N2201/324
摘要： 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.
摘要翻译： 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：US20050004941A1
公开(公告)日：2005-01-06
申请号：US10495283
申请日：2002-10-24
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。
-
-
-
-
-
-
-
-
-
搜索结果
18 条记录 (耗时 0.02 秒)
