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公开(公告)号：US07962964B2
公开(公告)日：2011-06-14
申请号：US12236573
申请日：2008-09-24
申请人： Jonathan James Stone , Jason Charles Pelly , Paul Gugenheim , Isabel DeLacour , Richard Foster , Andrew Collins
发明人： Jonathan James Stone , Jason Charles Pelly , Paul Gugenheim , Isabel DeLacour , Richard Foster , Andrew Collins
CPC分类号： H04N21/44 , G06F21/10 , G06F2221/0737 , H04N7/1675 , H04N21/234 , H04N21/8352 , H04N21/8358
摘要： A client device for use in a system having a server, the client device including: a receiving device configured to receive information material from the server, the information material containing a reversible modification providing a visually perceptible disturbing effect having been applied to the information material by using an invertible algorithm which uses values generated from one or more keys, and to receive identifying information that distinguishes the information material from other information material available from the server and condition information which defines a predetermined condition that should be met in order for the reversible modification to be reversed.
摘要翻译： 一种在具有服务器的系统中使用的客户端设备，所述客户端设备包括：接收设备，被配置为从所述服务器接收信息材料，所述信息材料包含可逆修改，所述可逆修改提供已经应用于所述信息材料的视觉上可察觉的干扰效应， 使用可逆算法，其使用从一个或多个密钥生成的值，并且接收将信息材料与可从服务器获得的其他信息材料区分开的识别信息，以及定义应满足的预定条件的条件信息，以便进行可逆修改 被扭转
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公开(公告)号：US07443982B2
公开(公告)日：2008-10-28
申请号：US10006481
申请日：2001-12-06
申请人： Jonathan James Stone , Jason Charles Pelly , Paul Gugenheim , Isabel Delacour , Richard Foster , Andrew Collins
发明人： Jonathan James Stone , Jason Charles Pelly , Paul Gugenheim , Isabel Delacour , Richard Foster , Andrew Collins
IPC分类号： H04K1/00
CPC分类号： H04N21/44 , G06F21/10 , G06F2221/0737 , H04N7/1675 , H04N21/234 , H04N21/8352 , H04N21/8358
摘要： A system for watermarking and transferring watermarked material comprises a transaction server, first and second clients, first apparatus for applying a perceptible watermark to the material and second apparatus for removing the watermark. The server, clients and first and second apparatus are linked by one or more communications networks. The system is arranged to implement the steps of: transferring from the transaction server to the first apparatus (i) data for creating a watermark, the creating data including (a) data defining an invertible algorithm and (b) data for creating at least one security key associated with the algorithm and (ii) data for creating a material identifier; using the said first apparatus to apply a material identifier to the material and applying a watermark to the material, using the said creating data; transferring from the first client to the transaction server the said material identifier and data for inverting the algorithm including the said at least one key; transferring the watermarked material to the second apparatus; deriving the said material identifier from the material; transferring the identifier from the second client to the transaction server; subject to predetermined conditions being satisfied, transferring from the transaction server to the second apparatus watermark removal data associated with the said material identifier, the removal data including at least one key and data defining an algorithm for removing the watermark in conjunction with the key; and using the second apparatus to remove the watermark using the said removal data.
摘要翻译： 用于水印和传送水印材料的系统包括交易服务器，第一和第二客户端，用于向材料应用可感知水印的第一装置和用于去除水印的第二装置。 服务器，客户端和第一和第二设备由一个或多个通信网络链接。 该系统被设置为实现以下步骤：从交易服务器转移到第一装置（i）用于创建水印的数据，创建数据包括（a）定义可逆算法的数据和（b）用于创建至少一个 与该算法相关联的安全密钥和（ii）用于创建材料标识符的数据; 使用所述第一装置使用所述创建数据将材料标识符应用于所述材料并向所述材料应用水印; 从所述第一客户端向所述交易服务器传送所述材料标识符和用于反转包括所述至少一个密钥的算法的数据; 将加水印的材料转移到第二装置; 从所述材料导出所述材料标识符; 将所述标识符从所述第二客户端传送到所述交易服务器; 在满足预定条件的情况下，从交易服务器转移到与所述材料标识符相关联的第二装置水印去除数据，删除数据包括至少一个密钥和定义用于结合密钥去除水印的算法的数据; 以及使用第二装置使用所述去除数据去除水印。
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公开(公告)号：US07636847B2
公开(公告)日：2009-12-22
申请号：US10158346
申请日：2002-05-30
申请人： Jonathan James Stone , Jason Charles Pelly , Stephen Mark Keating , Andrew Collins , Daniel Tapson
发明人： Jonathan James Stone , Jason Charles Pelly , Stephen Mark Keating , Andrew Collins , Daniel Tapson
CPC分类号： G06F21/10 , G06F2221/0737 , H04L2463/101
摘要： A material distribution apparatus, comprising a material server including a data introduction processor operable to introduce data into material to be distributed with the effect that the introduced data is at least difficult to perceive in the material, and a material impairment processor operable to introduce a reversible impairment into the material. A communications network distributes the impaired material to at least one client processor which includes an impairment reversing processor operable to reverse the impairment of the material to produce client restored material.
摘要翻译： 一种材料分配装置，包括材料服务器，其包括数据介绍处理器，可操作以将数据引入待分发的材料中，使得所引入的数据至少难以在材料中感知;以及材料损伤处理器，其可操作以引入可逆 损害材料。 通信网络将受损材料分配给至少一个客户端处理器，该客户端处理器包括可操作以逆转材料损伤以产生客户恢复的材料的减值逆转处理器。
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公开(公告)号：US07352811B2
公开(公告)日：2008-04-01
申请号：US10097210
申请日：2002-03-12
IPC分类号： H04B1/66
CPC分类号： H04N19/36 , H04N19/12 , H04N19/124 , H04N19/15 , H04N19/152 , H04N19/154 , H04N19/176 , H04N19/194 , H04N19/60 , H04N19/90
摘要： A data encoding apparatus operable to encode a plurality of data blocks produces encoded data in accordance with at least one of a selectable target data quantity or a selectable target data quality. The apparatus comprises a plurality of encoding processors at least one of the encoding processors having a parameter controller operable to determine, for each of the data blocks, a value for an encoding parameter to be used in an encoding process, which encoding parameter has an effect of influencing the quantity of encoded data produced by the encoding process and the quality of a decoded version of each data block encoded using the encoding process, the value of the parameter being determined to satisfy at least one of the target data quantity and the target data quality for each encoded data block, and an encoder operable to encode each of the data blocks in accordance with the encoding process to form encoded data blocks using the value of the encoding parameter determined for each block, and a selection processor operable, for each data block, to select one of the encoded blocks produced by each of the plurality of encoding processors in dependence upon which of the data blocks has at least one of the highest quality and the lowest data quantity. The encoding process is selected to provide either the highest decoded image quality or the lowest encoded data quantity depending on whether the compression ratio for each data block is fixed or the decoded data quality is fixed and the quantity of encoded data arranged to vary. Embodiments of the present invention find particular application for encoding video data, and for use in the Motion Picture Experts Group-IV (MPEG-IV) coding scheme.
摘要翻译： 可操作以对多个数据块进行编码的数据编码装置根据可选目标数据量或可选目标数据质量中的至少一个产生编码数据。 所述装置包括多个编码处理器，所述编码处理器中的至少一个具有参数控制器，所述参数控制器可操作以针对每个所述数据块确定要在编码处理中使用的编码参数的值，所述编码参数具有效果 影响由编码处理产生的编码数据的数量和使用编码处理编码的每个数据块的解码版本的质量，该参数的值被确定为满足目标数据量和目标数据中的至少一个 每个编码数据块的质量，以及编码器，其可操作以根据编码处理对每个数据块进行编码，以使用为每个块确定的编码参数的值来形成编码数据块;以及选择处理器，可针对每个数据 块，以根据数据块中的哪一个来选择由多个编码处理器中的每一个产生的编码块之一 具有最高质量和最低数据量之一。 选择编码处理以根据每个数据块的压缩比是固定的还是解码的数据质量是固定的并且编码数据的数量被排列而变化来提供最高的解码图像质量或最低的编码数据量。 本发明的实施例找到用于编码视频数据的特定应用，并且用于运动图像专家组IV（MPEG-IV）编码方案中。
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公开(公告)号：US08238435B2
公开(公告)日：2012-08-07
申请号：US10474013
申请日：2003-02-05
IPC分类号： H04N7/12
CPC分类号： G06T1/0035 , G06T2201/0052 , G06T2201/0053 , H04N7/167 , H04N19/192 , H04N19/467 , H04N21/23476 , H04N21/236 , H04N21/23608 , H04N21/23611 , H04N21/4344 , H04N21/63345 , H04N21/8358
摘要： The bitstream includes digital codes representing an information signal. At least one digital code is selected. The code occupies a part of the bitstream which is to contain at least one watermark code which represents a watermark perceptible in the information signal. The selected digital code(s) are removed from the said part of the bitstream. The watermark code(s) are put in the said part of the bitstream in place of the selected code(s). The number of bits of the selected code(s) removed from the said part of the bitstream is greater than or equal to the number of bits of the said watermark code(s) put in the said part. The removed selected code(s) are appended to an end of the bitstream and/or placed in watermark user data fields created in the bitstream.
摘要翻译： 比特流包括表示信息信号的数字代码。 至少选择一个数字代码。 代码占据比特流的一部分，其将包含表示在信息信号中可感知的水印的至少一个水印代码。 所选择的数字代码从所述比特流的所述部分移除。 将水印代码放在比特流的所述部分中以代替所选择的代码。 从所述比特流的所述部分移除的所选择的代码的比特数大于或等于所述部分中放入的所述水印代码的比特数。 删除的所选代码被附加到比特流的末尾和/或被放置在比特流中创建的水印用户数据字段中。
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公开(公告)号：US07302577B2
公开(公告)日：2007-11-27
申请号：US10317533
申请日：2002-12-12
CPC分类号： G06T1/0028 , G06T2201/0052 , G06T2201/0063 , G06T2201/0202
摘要： A watermarking system comprises an encoding data processor operable to generate at least one marked version of an original item of material by introducing one of a predetermined set of code words into a copy of the original material item. The encoding processor comprises a code word generator operable to form the code word by generating a plurality of code word coefficients, and an encoder operable to combine the code word coefficients with the material item, and an adaptation processor. The adaptation processor is operable to adapt the strength of the code word coefficients or the material item samples in accordance with a relative sensitivity of the material item samples to carry the code word coefficients. The strength of the watermark is therefore adapted in accordance with the sensitivity of the material item to carry watermark code word coefficients. As a result there is a reduced likelihood of an attacker identifying parts of the material item to which the watermark code word has been added. A likelihood of a successful attack is thereby reduced whilst maintaining a desired false negative detection probability.The watermarking system finds particular application in identifying a point of distribution of pirate copies of video material generated by capturing the watermarked image, using, for example, a camcorder in a cinema.
摘要翻译： 一种水印系统包括：编码数据处理器，可操作以通过将预定的一组代码字中的一个引入原始物料的副本来产生原始物料的至少一个标记版本。 该编码处理器包括一个代码字生成器，用于通过产生多个代码字系数来形成代码字，以及一个编码器，可操作以将代码字系数与材料项相结合，以及一个自适应处理器。 适应处理器可操作以根据材料项目样本的相对灵敏度来适应码字系数或材料项样本的强度以携带码字系数。 因此，水印的强度根据物质项目的灵敏度来适应携带水印码字系数。 结果，攻击者识别出已经添加了水印码字的物质项目的部分的可能性降低了。 从而降低成功攻击的可能性，同时保持所需的假阴性检测概率。 水印系统在识别通过使用例如电影院中的摄像机捕获水印图像而产生的视频资料的盗版副本的分布点上发现了特定的应用。
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公开(公告)号：US07284129B2
公开(公告)日：2007-10-16
申请号：US10317634
申请日：2002-12-12
CPC分类号： H04N1/32154 , G06T1/0071 , G06T2201/0052 , G06T2201/0063 , H04N1/32165 , H04N2201/324 , H04N2201/327
摘要： A watermarking system includes an encoding data processor operable to generate at least one marked version of an original item of material by introducing one of a predetermined set of code words into a copy of the original material item. The apparatus has a code word generator operable to provide the code word having a plurality of code word coefficients, and an encoding processor operable to combine the code word coefficients with the material. Each of the plurality of code words of the set is uniquely associated with a data word having first and second fields. Each of a set of values of the first field is represented as a first part of the code word having a first plurality of coefficients, and the second field is represented as a second part of the code word having a second plurality of coefficients.
摘要翻译： 一种水印系统包括编码数据处理器，其可操作以通过将预定的一组代码字中的一个引入原始物料的副本来生成原始物料的至少一个标记的版本。 该装置具有可操作以提供具有多个码字系数的码字的码字发生器，以及可操作以将码字系数与该物质组合的编码处理器。 集合的多个码字中的每一个与具有第一和第二字段的数据字唯一地相关联。 第一场的一组值中的每一个被表示为具有第一多个系数的码字的第一部分，并且第二场被表示为具有第二多个系数的码字的第二部分。
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公开(公告)号：US08015410B2
公开(公告)日：2011-09-06
申请号：US10728539
申请日：2003-12-05
IPC分类号： G06F9/00
CPC分类号： H04N1/32154 , G06T1/005 , G06T2201/0052 , G06T2201/0063 , G06T2201/0065 , H04N1/32165 , H04N2201/324 , H04N2201/327
摘要： A data processing apparatus is operable to identify one of a plurality of code words present in a watermarked version of a material item. The marked version is formed by combining each of a plurality of parts of a code word with one of a plurality of units from which the material item is comprised. The apparatus comprises a recovery processor operable to recover at least one part of the code word from a corresponding unit of the marked material item, and a correlator. The correlator is operable to generate for the marked material unit, a dependent correlation value for the part of the code word recovered from the material unit and the corresponding part of at least one of the re-generated code words from the set. A detector is operable to determine whether at least one of the code words is present in the marked material item from the dependent correlation value for the part of the code word exceeding a predetermined threshold. The data processor may detect the presence of the code word with improved probability, in particular when parts of the material have been corrupted.
摘要翻译： 数据处理装置可操作以识别物料项目的水印版本中存在的多个码字之一。 标记版本通过将代码字的多个部分中的每一个与包含材料项的多个单元中的每一个组合而形成。 该装置包括恢复处理器，可操作以从标记物料的相应单元和相关器中恢复码字的至少一部分。 所述相关器可操作地为所述标记的材料单元生成从所述材料单元恢复的所述代码字的部分的相关相关值以及来自所述组的所述重新生成的代码字中的至少一个的对应部分。 检测器可操作以根据代码字的部分超过预定阈值的相关相关值来确定标记物料项中是否存在至少一个代码字。 数据处理器可以以改进的概率来检测代码字的存在，特别是当材料的部分已被破坏时。
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公开(公告)号：US07899205B2
公开(公告)日：2011-03-01
申请号：US10896251
申请日：2004-07-21
IPC分类号： G06K9/00
CPC分类号： G11B20/00086 , G06T1/005 , G06T1/0085 , G06T7/0002 , G06T2201/0063 , G06T2201/0065 , G11B20/00123 , G11B20/00173 , G11B2020/10537 , H04N21/8358
摘要： A method of detecting a version of input data content, there being a plurality of different versions of said data content, in which: said data content is arranged as two or more segments according to a segmentation pattern; and said versions of said data content are identifiable by corresponding identification data patterns by which at least some of said segments have respective identification data; said method comprising the steps of: (i) detecting said identification data in respect of said segments of said input data content; (ii) comparing said detected identification data with said identification data patterns corresponding to said different versions of said data content; and (iii) detecting that said input data content comprises at least a contribution from a certain version of said data content if a sum of matches obtained between said detected identification data and said identification data pattern for said certain version exceeds a threshold number.
摘要翻译： 一种检测输入数据内容的版本的方法，存在所述数据内容的多个不同版本，其中：根据分割模式将所述数据内容排列为两个或多个片段; 并且所述数据内容的所述版本可由对应的识别数据模式识别，通过该标识数据模式，所述段中的至少一些具有相应的标识数据; 所述方法包括以下步骤：（i）根据所述输入数据内容的所述段检测所述识别数据; （ii）将所述检测到的识别数据与对应于所述数据内容的所述不同版本的所述识别数据模式进行比较; 以及（iii）如果在所述检测到的识别数据与所述特定版本的所述识别数据模式之间获得的匹配之和超过阈值，则检测所述输入数据内容至少包括来自所述数据内容的特定版本的贡献。
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公开(公告)号：US07487355B2
公开(公告)日：2009-02-03
申请号：US10317631
申请日：2002-12-12
CPC分类号： H04N1/32154 , G06T1/005 , G06T2201/0052 , G06T2201/0063 , H04N1/32165 , H04N2201/3236 , H04N2201/324 , H04N2201/327
摘要： A watermarking system comprises an encoding data processor operable to generate at least one marked version of an original item of material by introducing one of a predetermined set of code words into a copy of the original material item. The encoding data processor is arranged to form other code words of the set by cyclically shifting a first code word. The system includes a detecting data processor operable to identify the code word in the marked material item. The detecting data processor is operable to recover the code word from the marked material item and to form a Fourier transform of the recovered code word and a Fourier transform of the first code word of the set. The data detecting processor forms correlation samples by forming an inverse transform of a combination of the recovered and the first code word. Each of the correlation value samples provides the correlation value for one of the set of code words. A computationally efficient way of calculating the correlation for each code word in the set is thereby provided. As a result a time taken to detect a code word present in a marked material item is improved. The watermarking system finds particular application in identifying a point of distribution of pirate copies of video material generated by capturing the watermarked image, using, for example, a camcorder in a cinema.
摘要翻译： 一种水印系统包括：编码数据处理器，可操作以通过将预定的一组代码字中的一个引入原始物料的副本来产生原始物料的至少一个标记版本。 编码数据处理器被布置成通过循环移位第一码字来形成集合的其他码字。 该系统包括检测数据处理器，可操作以识别标记物料中的代码字。 检测数据处理器可操作以从标记的物料项目中恢复代码字，并形成恢复的代码字的傅立叶变换和该组的第一代码字的傅里叶变换。 数据检测处理器通过形成恢复和第一码字的组合的逆变换来形成相关样本。 每个相关值样本提供该组码字之一的相关值。 从而提供了计算集合中的每个码字的相关性的计算有效的方法。 结果，改进了用于检测标记材料项目中存在的代码字所花费的时间。 水印系统在识别通过使用例如电影院中的摄像机捕获水印图像而产生的视频资料的盗版副本的分布点上发现了特定的应用。
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