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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。
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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。
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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。
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公开(公告)号：US20060075239A1
公开(公告)日：2006-04-06
申请号：US10542891
申请日：2003-12-16
IPC分类号： H04L9/00
CPC分类号： G06T1/0071 , G06T2201/0083
摘要： In order to enable a data signal, such as an audio or video signal, to be marked with multiple watermarks a set of different codes or keys is used within a given application field. The set of codes/keys is known to a watermark embedder (20) and a watermark detector (22). In each watermark embedding step, whether it is a first embedding step or a subsequent embedding step, a different key is used. The embedder (22) includes a data extractor (24) for determining which key or keys has or have been used previously. A data generator (26) then selects a new key from the set of known keys.
摘要翻译： 为了使数据信号（例如音频或视频信号）能够用多个水印进行标记，在给定的应用领域内使用一组不同的代码或密钥。 水印嵌入器（20）和水印检测器（22）已知该组代码/键。 在每个水印嵌入步骤中，无论是第一嵌入步骤还是后续嵌入步骤，使用不同的键。 嵌入器（22）包括数据提取器（24），用于确定先前使用或已经使用过哪些键或键。 然后，数据发生器（26）从该组已知的密钥中选择一个新密钥。
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公开(公告)号：US20060075237A1
公开(公告)日：2006-04-06
申请号：US10534323
申请日：2003-10-31
申请人： Jin Seo , Jaap Haitsma , Antonius Adrianus Kalker
发明人： Jin Seo , Jaap Haitsma , Antonius Adrianus Kalker
IPC分类号： H04L9/00
CPC分类号： G06K9/00523 , G11B20/00086 , G11B20/00123 , G11B27/005 , G11B2020/10546
摘要： Disclosed is a method and arrangement for extracting a fingerprint from a multimedia signal, particularly an audio signal, which is invariant to speed changes of the audio signal. To this end, the method comprises extracting (12,13) a set of robust perceptual features from the multimedia signal, for example, the power spectrum of the audio signal. A Fourier-Mellin transform (15) converts the power spectrum into Fourier coefficients that undergo a phase change only if the audio playback speed changes. Their magnitudes or phase differences (16) constitute a speed change-invariant fingerprint. By a thresholding operation (19), the fingerprint can be represented by a compact number of bits.
摘要翻译： 公开了一种用于从多媒体信号，特别是音频信号中提取指纹的方法和装置，其不变地用于加速音频信号的改变。 为此，该方法包括从多媒体信号（例如音频信号的功率谱）提取（12,13）一组鲁棒的感知特征。 傅立叶 - 梅林变换（15）将功率谱转换为仅在音频播放速度变化时才进行相位变化的傅立叶系数。 它们的幅度或相位差（16）构成速度变化不变指纹。 通过阈值操作（19），指纹可以由紧凑的比特数表示。
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公开(公告)号：US20060031381A1
公开(公告)日：2006-02-09
申请号：US10521704
申请日：2003-07-10
IPC分类号： G06F15/16
CPC分类号： G06Q30/06 , G06F21/10 , G06F2221/2135 , G06Q20/1235 , G06Q20/14
摘要： A method of regulating sharing of a multimedia object (200) by a device (100), comprising registering usage information for the multimedia object (200) upon sharing of the multimedia object (200), and after the registering, billing a user of the device (100) for a certain amount in accordance with the registered usage information for the multimedia object (200). Registration preferably takes place in a client (101) arranged for sharing of the multimedia object (200). The usage information could for instance comprise the number of times a multimedia object has been shared, or the duration of the object. If a sufficient number of objects have been shared, or if the total time exceeds a maximum, the client (101) reports the usage information to a third party (130) for billing purposes.
摘要翻译： 一种调节由设备（100）共享多媒体对象（200）的方法，包括在多媒体对象（200）共享时登记多媒体对象（200）的使用信息，并且在注册之后，对 设备（100）根据多媒体对象（200）的注册使用信息确定一定量。 注册优选地在被布置为共享多媒体对象（200）的客户端（101）中进行。 使用信息可以例如包括多媒体对象已被共享的次数或对象的持续时间。 如果已经共享了足够数量的对象，或者如果总时间超过最大值，则为了计费的目的，客户端（101）将使用信息报告给第三方（130）。
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公开(公告)号：US20050141707A1
公开(公告)日：2005-06-30
申请号：US10503245
申请日：2003-01-21
CPC分类号： G06F17/30758 , G06F17/3002 , G06F17/30026 , G06F17/30743
摘要： A robust fingerprinting system is disclosed. Such a system can recognize unknown multimedia content (U(t)) by extracting a fingerprint (a series of hash words) from said content, and searching a resembling fingerprint in a database in which fingerprints of a plurality of known contents (K(t)) are stored. In order to more efficiently store the fingerprints in the database and to speed up the search, the hash words (H(n)) of known signals (K(t)) are sub-sampled (13) by a factor M prior to storage in the database (14). The hash words (H(n)) of unknown signals (U(t)) are divided (16) into M interleaved sub-series (H0(n) . . . HM−1(n)). The interleaved sub-series are selectively (17) applied to the database (14) under the control of a computer (15). If only one of the sub-series sufficiently matches a stored fingerprint, the signal is identified.
摘要翻译： 公开了一种健壮的指纹系统。 这样的系统可以通过从所述内容提取指纹（一系列散列字）来识别未知的多媒体内容（U（t）），并且在数据库中搜索类似的指纹，其中多个已知内容的指纹（K（t ））。 为了更有效地将指纹存储在数据库中并加速搜索，已知信号（K（t））的散列字（H（n））在存储之前以因子M被子采样（13） 在数据库（14）中。 将未知信号（U（t））的散列字（H（n））（16）分割为M个交错子序列（H 0（n）... HM-1（n））。 在计算机（15）的控制下，交替子系列被选择性地（17）应用于数据库（14）。 如果子系列中只有一个与存储的指纹充分匹配，则识别该信号。
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公开(公告)号：US20080013794A1
公开(公告)日：2008-01-17
申请号：US11574759
申请日：2005-09-06
IPC分类号： G06K9/00
CPC分类号： G06K9/00362 , G06K9/00885 , G06K9/522 , G07C9/00158
摘要： The present invention relates to a method and a system of recognizing an ear by locating an invariant point in a representation X of ear geometry. An idea of the present invention is the improve the well known Iannarelli algorithm in that the scheme of the present invention captures and processes all pixels values along an axis and may use an arbitrary number of axes to combine these pixel values to a complete feature vector with a sufficient level of discrimination. The prior art Iannarelli method is improved by performing a Fourier transformation of a polar representation e[θ, p] of the ear, whereby a transformed E[Θ/P] polar representation is created. This transformed representation is sampled to create an ear feature vector XF.
摘要翻译： 本发明涉及通过在耳朵几何形状的表示X中定位不变点来识别耳朵的方法和系统。 本发明的思想是改进众所周知的Iannarelli算法，因为本发明的方案捕获并处理沿轴的所有像素值，并且可以使用任意数量的轴将这些像素值组合成完整的特征向量与 足够的歧视程度。 通过执行耳朵的极性表示eθ，p的傅立叶变换来改进现有技术的Iannarelli方法，由此创建变换的E [θ/ P]极性表示。 对该变换后的表示进行采样以产生耳特征向量X≠F。
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公开(公告)号：US20060126888A1
公开(公告)日：2006-06-15
申请号：US10525489
申请日：2003-08-12
申请人： Johan Talstra , Job Oostveen , Gerrit Langelaar , Antonius Adrianus Kalker , Maurice Jerome Justin Maes
发明人： Johan Talstra , Job Oostveen , Gerrit Langelaar , Antonius Adrianus Kalker , Maurice Jerome Justin Maes
IPC分类号： G06K9/00
CPC分类号： G06T1/005 , G06T2201/0051 , G06T2201/0061 , G06T2201/0065 , G11B20/00891 , H04N5/775 , H04N5/85 , H04N5/913 , H04N2005/91335
摘要： Watermark-detection in the graphics card of a personal computer, for the purpose of copy-protection, has recently started to draw a lot of attention in standardization. Detection in the graphics card has problems completely different from the formerly considered detection in the DVD-drive, having to do with high data-rates, large scale-ranges and presence of multiple video-streams in the display area. This invention proposes conversion (32) of the computer's RGB output into a luminance signal (Y) prior to watermark detection by a conventional watermark detector (31) being arranged to detect the watermark in a such a luminance signal. The resolution of the monitor image to be inspected is preferably converted (33) to the conventional TV resolution of the (MPEG2-compressed) contents being played back on the computer's DVD drive. In graphic cards providing multiple outputs (VGA, TV, DVI), the same watermark detector may be time-sequentiall connected (34) to each of the outputs.
摘要翻译： 个人电脑显卡的水印检测，为了防拷贝，最近在标准化方面引起了极大的关注。 图形卡中的检测与DVD驱动器中以前考虑的检测完全不同，与显示区域中的高数据速率，大尺度范围和多个视频流的存在有关。 本发明提出了将传统水印检测器（31）进行水印检测之前的计算机的RGB输出转换为亮度信号（Y），该水印检测器被配置为在这种亮度信号中检测水印。 要检查的监视器图像的分辨率优选地被转换（33）到在计算机的DVD驱动器上播放的（MPEG2压缩的）内容的常规TV分辨率。 在提供多个输出（VGA，TV，DVI）的图形卡中，相同的水印检测器可以与每个输出进行时间顺序连接（34）。
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公开(公告)号：US20060075240A1
公开(公告)日：2006-04-06
申请号：US10542894
申请日：2004-01-23
IPC分类号： H04L9/00
CPC分类号： G11B20/0092 , G11B20/00086 , H03M13/19 , H04N19/467
摘要： Many methods for reversible watermarking (embedding schemes that allow perfect reconstruction of the original host signal) are highly fragile in the sense that the slightest modification of watermarked content prohibits the recovery of both the original signal as well as the embedded auxiliary data. In order to obtain robustness against transmission or channel errors, the embedding method according to the invention accommodates error correction data in a portion of the data embedding capacity. In an advantageous embodiment, the host signal (36) is segmented in segments, and error correction data (p(n)) for a segment (S(n)) is accommodated in data (37) being embedded in a subsequent segment (S(n+1)) along with restoration data (r(n)) for reconstructing the host signal. The remaining portion of the embedding capacity is used for payload (w).
摘要翻译： 许多可逆水印方法（允许原始主机信号的完美重建的嵌入方案）是非常脆弱的，因为水印内容的最细微修改禁止恢复原始信号以及嵌入式辅助数据。 为了获得针对传输或信道错误的鲁棒性，根据本发明的嵌入方法在数据嵌入容量的一部分中适应纠错数据。 在有利的实施例中，主机信号（36）被分段，并且对于段（S（n））的纠错数据（p（n））被容纳在被嵌入到后续段（S （n + 1））以及用于重建主机信号的恢复数据（r（n））。 嵌入容量的剩余部分用于有效载荷（w）。
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