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公开(公告)号：US07260220B2
公开(公告)日：2007-08-21
申请号：US10532911
申请日：2003-09-22
IPC分类号： H04N7/167
CPC分类号： H04N21/23892 , G06T1/0035 , H04N21/8358
摘要： A method and apparatus (200) for embedding a watermark in an information signal bit-stream are described. The method comprises receiving a portion of an information signal bit-stream (MPEG2). A first copy of the received portion is stored in a first buffer (220). A second copy of the received portion is watermarked, and the resulting watermarked signal stored in a second buffer (240). At predetermined intervals, a check is performed to determine if the bit-rate of the received portion has been changed by being watermarked. If the check determines the bit-rate has changed, the first copy of the received portion from the first buffer is output. Otherwise the watermarked signal from the second buffer is output.
摘要翻译： 描述了一种用于在信息信号比特流中嵌入水印的方法和装置（200）。 该方法包括接收信息信号比特流（MPEG2）的一部分。 接收部分的第一副本被存储在第一缓冲器（220）中。 所接收部分的第二副本被加水印，并且所生成的水印信号存储在第二缓冲器（240）中。 以预定间隔，执行检查以确定接收部分的比特率是否已经通过加水印而改变。 如果检查确定比特率已经改变，则输出来自第一缓冲器的接收部分的第一副本。 否则输出来自第二缓冲器的水印信号。
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2.发明申请METHOD AND APPARATUS FOR DETECTING AN INSERTED SEGMENT INTO A VIDEO DATA STREAM 审中-公开将插入分段检测到视频数据流的方法和装置公开(公告)号：US20110038546A1
公开(公告)日：2011-02-17
申请号：US12599100
申请日：2008-05-05
IPC分类号： G06K9/46
CPC分类号： H04N5/76 , G06K9/00711 , G06K9/3266
摘要： An inserted segment of a video data stream is detected if no graphical object is detected. The presence of at least one active graphical object in the video data stream is detected concurrently with detecting appearance of a new graphical object in the video data stream. The most reliable graphical object from the at least one active graphical object and the new graphical object is determined and the presence of the most reliable graphical object is detected from a point in the video data stream at the new graphical object was detected to appear. An inserted segment of the video data stream is detected if no graphical object is detected.
摘要翻译： 如果没有检测到图形对象，则检测视频数据流的插入段。 检测视频数据流中至少一个活动图形对象的存在同时检测视频数据流中的新图形对象的外观。 确定来自至少一个活动图形对象和新图形对象的最可靠的图形对象，并且检测到出现在新图形对象处的视频数据流中的点处最可靠的图形对象的存在。 如果没有检测到图形对象，则检测视频数据流的插入段。
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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：US07561715B2
公开(公告)日：2009-07-14
申请号：US10525483
申请日：2003-08-12
申请人： Johan Cornelis Talstra , Job Cornelis Oostveen , Gerrit Cornelis Langelaar , Antonius Adrianus Cornelis Maria Kalker , Maurice Jerome Justin Jean-Baptiste Maes
发明人： Johan Cornelis Talstra , Job Cornelis Oostveen , Gerrit Cornelis Langelaar , Antonius Adrianus Cornelis Maria Kalker , Maurice Jerome Justin Jean-Baptiste Maes
CPC分类号： G06T1/005 , G06T2201/0051 , G06T2201/0061 , G06T2201/0065 , G11B20/00891 , H04N5/775 , H04N5/85 , H04N5/913 , H04N2005/91335
摘要： A graphics card of a computer system is configured to detect watermarks within a video signal that includes one or more windows of a display. The frames of the video signal are analyzed to locate image areas in which the video signal changes, and a bounding box around these areas of change is defined as an area(s) of interest. Watermark detection is then performed within the area(s) of interest.
摘要翻译： 计算机系统的图形卡被配置为检测包括显示器的一个或多个窗口的视频信号内的水印。 分析视频信号的帧以定位视频信号变化的图像区域，并且围绕这些变化区域的边界框被定义为感兴趣的区域。 然后在感兴趣的区域内进行水印检测。
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公开(公告)号：US08959202B2
公开(公告)日：2015-02-17
申请号：US12922580
申请日：2009-03-18
IPC分类号： G06F15/173 , G06Q30/00
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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6.发明申请公开(公告)号：US20100302452A1
公开(公告)日：2010-12-02
申请号：US12599105
申请日：2008-05-05
IPC分类号： H04N5/14
CPC分类号： H04N5/147 , G11B27/28 , H04N21/434 , H04N21/44008 , H04N21/8456
摘要： A first transition between a first video segment and a second video segment is detected by a first detector (105). A second transition is detected by a second detector (107). The first and second detectors (105, 107) are different. The outputs of the first and second detectors (105, 107) are compared (109). The reliability of the second method is determined by comparing the transition detected by the first detector (105) with the transition detected by the second detector (107). At least the second transition is used to determine a final transition if the second method is determined to be reliable. The second transition is not used to determine the final transition if the second method is determined to be unreliable.
摘要翻译： 由第一检测器（105）检测第一视频段和第二视频段之间的第一转换。 第二转换由第二检测器（107）检测。 第一和第二检测器（105,107）是不同的。 比较第一和第二检测器（105,107）的输出（109）。 通过将由第一检测器（105）检测到的转变与由第二检测器（107）检测到的转变进行比较来确定第二方法的可靠性。 如果确定第二种方法是可靠的，则至少使用第二转换来确定最终转换。 如果第二种方法被确定为不可靠，则第二种转换不用于确定最终转换。
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公开(公告)号：US07779271B2
公开(公告)日：2010-08-17
申请号：US10495952
申请日：2002-10-24
IPC分类号： H04L9/32
CPC分类号： G06T1/0028 , G06T2201/0051 , G06T2201/0052 , G06T2201/0064 , G06T2201/0202 , G11B20/00007 , G11B20/00086 , G11B20/00884 , H04N1/32128 , H04N1/32165 , H04N1/32192 , H04N5/913 , H04N19/467 , H04N21/8358 , H04N2005/91335 , H04N2201/3233 , H04N2201/3242
摘要： Advanced watermark embedders use psycho visual/acoustic models to minimize perception of the embedded watermark in media contents. However, it is expensive to implement such advanced watermark embedders in consumer appliances (3) such as DVD recorders. In accordance with the invention, embedding strength parameters (JND) are calculated (13) off-line at a remote location (1) and transmitted along with the media contents to the consumer appliance (3). A relatively simple embedder (33) uses the received parameters to control the strength of the watermark (36) to be embedded. The parameters may be accommodated in the transmitted signal as payload of a fragile watermark or as user data in an encrypted MPEG stream.
摘要翻译： 高级水印嵌入器使用心理视觉/声学模型来最小化媒体内容中嵌入水印的感知。 然而，在诸如DVD刻录机的消费电器（3）中实现这种高级水印嵌入是很昂贵的。 根据本发明，在远程位置（1）离线计算嵌入强度参数（JND）（13），并将其与媒体内容一起传送到消费电器（3）。 相对简单的嵌入器（33）使用所接收的参数来控制要嵌入的水印（36）的强度。 这些参数可以被容纳在所发送的信号中作为脆弱水印的有效载荷或作为加密的MPEG流中的用户数据。
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公开(公告)号：US07596221B2
公开(公告)日：2009-09-29
申请号：US10572653
申请日：2004-10-06
IPC分类号： H04N7/167
CPC分类号： G06T1/005 , G06T1/0028 , G06T2201/0052 , G06T2201/0053 , G06T2201/0065 , G06T2201/0202
摘要： Watermark detectors have a buffer in which a number of image tiles are folded and accumulated prior to computing the correlation between buffer contents and the watermark pattern being looked for. The intention of the folding and accumulation process is to average out the video content while accumulating the embedded watermark energy. This no longer appears to hold for strongly compressed video, such as DIVX, which exhibits a lot of artificial noise and undesired similarity (block patterns). As a result thereof, correlation peaks are often below the threshold. In a similar manner, the compression affects scale detection. According to this invention, only frames (or parts thereof) that are not so heavily compressed and therefore have a high probability of carrying enough watermark energy are folded and accumulated. To this end, a quality metric is calculated, the quality metric being indicative of the degree of compression of the data. The quality metric may be calculated based on the compressed data itself or derived from the decompressed base-band data. An advantageous example is the number of non-zero DCT coefficients of a (residue) frame. A determination is then made as to whether to exclude the frame (or part thereof) from the watermark decode process. The quality metric may also be used to select data for use in a scale detection process.
摘要翻译： 水印检测器具有缓冲器，其中在计算缓冲器内容和正在寻找的水印图案之间的相关性之前，将多个图像块折叠并累积。 折叠和累积过程的目的是在积累嵌入式水印能量的同时平均视频内容。 这似乎不再适用于强烈压缩的视频，例如DIVX，它显示出大量的人为噪声和不希望的相似性（块模式）。 作为其结果，相关峰值通常低于阈值。 以类似的方式，压缩影响尺度检测。 根据本发明，仅压缩并且因此具有承载足够的水印能量的高可能性的帧（或其部分）被折叠和累积。 为此，计算质量度量，质量度量指示数据的压缩程度。 可以基于压缩数据本身或从解压缩的基带数据导出质量度量。 一个有利的例子是（残差）帧的非零DCT系数的数量。 然后确定是否从水印解码处理中排除帧（或其部分）。 质量度量也可用于选择用于尺度检测过程的数据。
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