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1. 发明授权

US08281137B2 Method and apparatus for determining whether or not a reference pattern is present in a received and possibly watermarked signal 有权
标题翻译：用于确定参考图案是否存在于接收和可能加水印的信号中的方法和装置
公开(公告)号：US08281137B2
公开(公告)日：2012-10-02
申请号：US12321071
申请日：2009-01-15
申请人： Peter Georg Baum , Michael Arnold , Ulrich Gries , Walter Voessing
发明人： Peter Georg Baum , Michael Arnold , Ulrich Gries , Walter Voessing
IPC分类号： H04L9/32
CPC分类号： G10L19/018 , G06T1/0078 , G06T2201/0065 , H04N1/32154
摘要： Many watermarking systems make use of correlation for calculating a detection metric, which means that several reference patterns are generated at encoder side and one or more of them are embedded inside the content signal, dependent on the message to be embedded. To decode the embedded message, it is necessary to discover which reference pattern was embedded at encoder side by correlating the known reference patterns with the content signal. In the case where watermarked audio is emitted by a loudspeaker and then captured with a microphone, the received signal echoes are used for watermark detection instead of treating them as noise by integrating the correlation values resulting from echoes into the main correlation peak, thereby using correlation result amplitude values located within a predetermined neighborhood of a correlation result peak amplitude value and exceeding a predetermined threshold.
摘要翻译：许多水印系统利用相关性来计算检测度量，这意味着在编码器侧产生几个参考图案，并且其中一个或多个嵌入在内容信号内，这取决于待嵌入的消息。为了对嵌入的消息进行解码，需要通过将已知的参考模式与内容信号相关联来发现在编码器侧嵌入哪个参考模式。在由扬声器发出水印音频然后用麦克风捕获的情况下，接收到的信号回波用于水印检测，而不是通过将由回波产生的相关值积分到主相关峰中而将其作为噪声来处理，从而使用相关结果振幅值位于相关结果峰值振幅值的预定邻域内并超过预定阈值。

2. 发明申请

US20130132729A1 METHOD AND SYSTEM FOR PROTECTING BY WATERMARKING AGAINST NON-AUTHORISED USE ORIGINAL AUDIO OR VIDEO DATA WHICH ARE TO BE PRESENTED 审中-公开
标题翻译：防止非授权使用原始音频或视频数据进行水印保护的方法和系统
公开(公告)号：US20130132729A1
公开(公告)日：2013-05-23
申请号：US13813641
申请日：2011-07-26
申请人： Michael Arnold , Peter Georg Baum , Ulrich Gries , Walter Voessing
发明人： Michael Arnold , Peter Georg Baum , Ulrich Gries , Walter Voessing
IPC分类号： H04L9/28
CPC分类号： H04L9/28 , G06T1/0071 , G09C5/00 , H04L9/12 , H04L9/3297 , H04L2209/608
摘要： For protecting by watermarking against non-authorised use, e.g. non-authorised recording or copying, original audio or video data which are to be presented in a digital cinema, a sender site generates from the original signal at least two differently pre-watermarked versions for successive blocks or frames of the signal, wherein these versions are derived by applying a repeated watermark symbol value to a version and different watermark symbol values to the different versions. The pre-watermarked signal versions are encrypted and transferred e.g. as data files to a digital cinema unit in which they are decrypted. According to the values of a desired watermark information word, corresponding frames or blocks from said decrypted and pre-watermarked versions are assembled in a successive manner, so as to provide and present a watermarked version of said original audio or video signal that carries said watermark information word.
摘要翻译：为了通过防止非授权使用的水印来保护。非授权的记录或复制，要呈现在数字电影院中的原始音频或视频数据，发送者站点从原始信号生成用于连续块或帧信号的至少两种不同的预水印版本，其中这些版本通过将重复的水印符号值应用于不同版本的版本和不同的水印符号值来导出。预加水印的信号版本被加密和传送。作为将数据文件解密的数字电影单元。根据期望的水印信息字的值，以连续的方式组合来自所述解密和预水印版本的相应帧或块，以便提供并呈现携带所述水印的所述原始音频或视频信号的水印版本信息字。

3. 发明申请

US20130070960A1 PROVIDING A WATERMARKED DECODED AUDIO OR VIDEO SIGNAL DERIVED FROM A WATERMARKED AUDIO OR VIDEO SIGNAL THAT WAS LOW BIT RATE ENCODED AND DECODED 审中-公开
标题翻译：提供WATERMARKED解码的音频或视频信号从水印音视频或视频信号传输，低码率编码和解码
公开(公告)号：US20130070960A1
公开(公告)日：2013-03-21
申请号：US13701115
申请日：2011-05-18
申请人： Ulrich Gries , Peter Georg Baum , Michael Arnold , Walter Voessing
发明人： Ulrich Gries , Peter Georg Baum , Michael Arnold , Walter Voessing
IPC分类号： G06K9/00
CPC分类号： G06T1/005 , G10L19/018 , H04L2209/608
摘要： Various audio signal watermarking systems are known, which are also applied to digitally encoded audio signals. However, in current audio signal watermarking systems the watermark signal and its watermark payload do not survive very low bit rate audio coding, in particular parametric coding. According to the invention, a watermarked uncompressed audio signal bit-stream is low-bit rate compressed, but the water-marking is removed and the watermark's payload only is transmitted together with the compressed audio signal bit-stream. At decoder side, the received audio signal bit stream is de-compressed and water-marked again using the transmitted watermark payload. Advantageously, it does not matter that the compressed bitstream is not watermarked because the compressed bitstream can be encrypted prior to transmission.
摘要翻译：各种音频信号水印系统是已知的，其也被应用于数字编码的音频信号。然而，在当前音频信号水印系统中，水印信号及其水印有效载荷不能承受非常低的比特率音频编码，特别是参数编码。根据本发明，水印非压缩音频信号比特流是低比特率压缩的，但是水印被去除，并且水印的有效载荷仅与压缩的音频信号比特流一起发送。在解码器侧，使用发送的水印有效载荷对接收到的音频信号比特流进行解压缩并进行水标记。有利的是，由于压缩比特流可以在传输之前加密，因此压缩比特流不加水印并不重要。

4. 发明申请

US20090187765A1 Method and apparatus for determining whether or not a reference pattern is present in a received and possibly watermarked signal 有权
标题翻译：用于确定参考图案是否存在于接收和可能加水印的信号中的方法和装置
公开(公告)号：US20090187765A1
公开(公告)日：2009-07-23
申请号：US12321071
申请日：2009-01-15
申请人： Peter Georg Baum , Michael Arnold , Ulrich Gries , Walter Voessing
发明人： Peter Georg Baum , Michael Arnold , Ulrich Gries , Walter Voessing
IPC分类号： H04L9/00
CPC分类号： G10L19/018 , G06T1/0078 , G06T2201/0065 , H04N1/32154
摘要： Many watermarking systems make use of correlation for calculating a detection metric, which means that several reference patterns are generated at encoder side and one or more of them are embedded inside the content signal, dependent on the message to be embedded. To decode the embedded message, it is necessary to discover which reference pattern was embedded at encoder side. This is determined by correlating the known reference patterns with the content signal. A watermark detector decides, depending on the size of the correlation result values, whether or not a given pseudo-random sequence was embedded. However, this does not provide correct decisions if watermarked audio is emitted by a loudspeaker and then captured with a microphone. According to the invention, it is taken advantage of the received signal echoes instead of treating them as noise. The watermark detection result is improved by integrating the correlation values resulting from echoes into the main correlation peak, thereby using correlation result amplitude values located within a predetermined neighborhood of a correlation result peak amplitude value and exceeding a predetermined threshold.
摘要翻译：许多水印系统利用相关性来计算检测度量，这意味着在编码器侧产生几个参考图案，并且其中一个或多个嵌入在内容信号内，这取决于待嵌入的消息。要解码嵌入的消息，有必要发现在编码器侧嵌入了哪个参考模式。这通过将已知的参考图案与内容信号相关联来确定。水印检测器根据相关结果值的大小来决定是否嵌入给定的伪随机序列。然而，如果由扬声器发出水印音频，然后用麦克风捕获，则这不能提供正确的决定。根据本发明，利用接收的信号回波而不是将它们视为噪声。通过将由回波产生的相关值积分到主相关峰中来提高水印检测结果，从而使用位于相关结果峰值振幅值的预定邻域内并超过预定阈值的相关结果幅度值。

5. 发明授权

US08688993B2 Method and apparatus for determining and using the sampling frequency for decoding watermark information embedded in a received signal sampled with an original sampling frequency at encoder side 有权
标题翻译：用于确定和使用采样频率来解码嵌入在编码器侧以原始采样频率采样的接收信号中的水印信息的方法和装置
公开(公告)号：US08688993B2
公开(公告)日：2014-04-01
申请号：US12319302
申请日：2009-01-06
申请人： Peter Georg Baum , Walter Voessing , Ulrich Gries
发明人： Peter Georg Baum , Walter Voessing , Ulrich Gries
IPC分类号： H04L29/06 , H04L9/32 , H04N7/167 , H03M1/06
CPC分类号： H04L9/32 , G06T1/005 , G06T2201/0052 , G06T2201/0065 , G10L19/018 , G11B20/00884 , H03M1/0617 , H04L9/3247 , H04N7/167 , H04N21/4394 , H04N21/8358
摘要： In watermarked signal decoding, the embedded message is decoded by correlating the reference patterns with the watermarked signal. The watermark detector decides, depending on the size of the correlation result values, whether or not a given reference pattern was embedded. However, decoding watermarked audio or video signals is difficult if the link between the watermark encoder and the watermark decoder is not a digital one, for example an acoustic path. A re-sampler control unit controls the sampling frequency of a re-sampler, in connection with a watermark decoder that outputs, in addition to the watermark information bits, a corresponding confidence value that is derived from the correlation result and that is used for synchronizing the re-sampler sampling frequency with the original sampling frequency of the watermarked signal. The synchronization processing includes a search mode and a synchronized mode.
摘要翻译：在水印信号解码中，通过将参考图案与水印信号相关来对嵌入的消息进行解码。水印检测器根据相关结果值的大小决定是否嵌入给定的参考图案。然而，如果水印编码器和水印解码器之间的链接不是数字水印解码器，例如声学路径，则解码加密的音频或视频信号是困难的。重新取样器控制单元控制重新取样器的采样频率，与水印解码器相关联，水印解码器除了水印信息位之外还输出相应的置信度值，该置信度值从相关结果导出并用于同步重采样器采样频率与原始采样频率的水印信号。同步处理包括搜索模式和同步模式。

6. 发明申请

US20090193255A1 Method and apparatus for determining and using the sampling frequency for decoding watermark information embedded in a received signal sampled with an original sampling frequency at encoder side 有权
标题翻译：用于确定和使用采样频率来解码嵌入在编码器侧以原始采样频率采样的接收信号中的水印信息的方法和装置
公开(公告)号：US20090193255A1
公开(公告)日：2009-07-30
申请号：US12319302
申请日：2009-01-06
申请人： Peter Georg Baum , Walter Voessing , Ulrich Gries
发明人： Peter Georg Baum , Walter Voessing , Ulrich Gries
IPC分类号： H04L9/32 , G06N5/02
CPC分类号： H04L9/32 , G06T1/005 , G06T2201/0052 , G06T2201/0065 , G10L19/018 , G11B20/00884 , H03M1/0617 , H04L9/3247 , H04N7/167 , H04N21/4394 , H04N21/8358
摘要： Many watermarking systems make use of correlation for calculating a detection metric, which means that reference patterns are generated at encoder side and are embedded inside the audio or video signal, dependent on the message to be embedded. The same reference patterns are generated at decoder side. The embedded message is decoded by correlating the reference patterns with the watermarked signal. The watermark detector decides, depending on the size of the correlation result values, whether or not a given reference pattern was embedded. However, decoding watermarked audio or video signals is difficult if the link between the watermark encoder and the watermark decoder is not a digital one, for example an acoustic path. According to the invention, a re-sampler control unit controls the sampling frequency of a re-sampler, in connection with a watermark decoder that outputs, in addition to the watermark information bits, a corresponding confidence value that is derived from the correlation result and that is used for synchronizing the re-sampler sampling frequency with the original sampling frequency of the watermarked signal. The synchronization processing includes a search mode and a synchronized mode.
摘要翻译：许多水印系统利用相关性来计算检测度量，这意味着参考图案在编码器侧生成，并且嵌入在音频或视频信号内，取决于要嵌入的消息。在解码器侧产生相同的参考模式。通过将参考图案与水印信号相关联来解码嵌入的消息。水印检测器根据相关结果值的大小决定是否嵌入给定的参考图案。然而，如果水印编码器和水印解码器之间的链接不是数字水印解码器，例如声学路径，则解码加密的音频或视频信号是困难的。根据本发明，重新取样器控制单元结合除了水印信息比特以外的相关置信度值从水平信息比特输出的水印解码器，控制重采样器的采样频率，用于使重采样器采样频率与水印信号的原始采样频率同步。同步处理包括搜索模式和同步模式。

7. 发明申请

US20130051564A1 METHOD AND APPARATUS FOR FREQUENCY DOMAIN WATERMARK PROCESSING A MULTI-CHANNEL AUDIO SIGNAL IN REAL-TIME 有权
标题翻译：频域水印实时处理多通道音频信号的方法与装置
公开(公告)号：US20130051564A1
公开(公告)日：2013-02-28
申请号：US13562849
申请日：2012-07-31
申请人： Peter Georg Baum , Ulrich Gries , Michael Arnold , Xiaoming Chen
发明人： Peter Georg Baum , Ulrich Gries , Michael Arnold , Xiaoming Chen
IPC分类号： H04R5/00
CPC分类号： G10L19/018 , G10L19/008
摘要： Digital audio signal watermarking in real-time is difficult in an environment that has limited processing power. According to the invention, the channels in a data block-based audio multi-channel signal are prioritized with respect to watermarking importance, whereby the channel priority can change for different input signal data blocks. For a current input signal block, the most important channel is watermarked and the required processing time is determined. If this required processing time is shorter than a predefined application-dependent threshold, the next most important channel is marked and the additionally required processing time is determined, and so on. Due to the block-based nature of the audio watermarking including block overlap/add and due to the sensitivity of the resulting audio quality against blocking artifacts, several problems are solved in order to lead to acceptable performance and quality.
摘要翻译：在具有有限处理能力的环境中，实时数字音频信号水印是困难的。根据本发明，基于数据块的音频多信道信号中的信道关于水印重要性被优先化，由此对于不同的输入信号数据块，信道优先级可以改变。对于当前输入信号块，最重要的信道被加水印，并且确定所需的处理时间。如果这需要的处理时间比预定的应用程序相关的阈值短，则下一个最重要的通道被标记，另外需要处理时间被确定，等等。由于音频水印的基于块的性质包括块重叠/添加，并且由于所产生的音频质量对于块伪影的敏感性，所以解决了几个问题以便导致可接受的性能和质量。

8. 发明授权

US09147402B2 Method and apparatus for detecting which one of symbols of watermark data is embedded in a received signal 有权
标题翻译：用于检测水印数据的符号中的哪一个嵌入在接收信号中的方法和装置
公开(公告)号：US09147402B2
公开(公告)日：2015-09-29
申请号：US13697089
申请日：2011-04-27
申请人： Xiaoming Chen , Peter Georg Baum , Michael Arnold , Ulrich Gries
发明人： Xiaoming Chen , Peter Georg Baum , Michael Arnold , Ulrich Gries
IPC分类号： G10L19/00 , G10L19/018 , H04L9/00
CPC分类号： G10L19/018
摘要： Watermark symbol detection requires a detection metric for deciding at decoder side which candidate symbol is embedded inside the audio or video signal content. The invention provides an improved detection metric processing that achieves a reliable detection of watermarks in the presence of additional noise and echoes, and that is adaptive to signal reception conditions and requires a decreased computational power. This is performed by taking into account the information contained in the echoes of the received audio signal in the decision metric and comparing it with the corresponding metric obtained from decoding a non-marked audio signal, based on recursive calculation of false positive detection rates of peaks in correlation result values. The watermark symbol corresponding to the reference sequence having the lowest false positive error is selected as the embedded one.
摘要翻译：水印符号检测需要用于在解码器侧确定哪个候选符号被嵌入在音频或视频信号内容内的检测度量。本发明提供了一种改进的检测度量处理，其在附加噪声和回波的存在下实现水印的可靠检测，并且其适应于信号接收条件并且需要降低的计算能力。这是通过考虑包含在决定度量中的接收到的音频信号的回波中的信息来进行的，并且将其与从非标记音频信号解码获得的对应度量进行比较，基于递归计算峰值的假阳性检测率相关结果值。选择与具有最低假正误差的参考序列相对应的水印符号作为嵌入的。

9. 发明授权

US09165559B2 Method and apparatus for frequency domain watermark processing a multi-channel audio signal in real-time 有权
标题翻译：实时频域水印处理多声道音频信号的方法和装置
公开(公告)号：US09165559B2
公开(公告)日：2015-10-20
申请号：US13562849
申请日：2012-07-31
申请人： Peter Georg Baum , Ulrich Gries , Michael Arnold , Xiaoming Chen
发明人： Peter Georg Baum , Ulrich Gries , Michael Arnold , Xiaoming Chen
IPC分类号： G10L19/018 , G10L19/008
CPC分类号： G10L19/018 , G10L19/008
摘要： Digital audio signal watermarking in real-time is difficult in an environment that has limited processing power. According to the invention, the channels in a data block-based audio multi-channel signal are prioritized with respect to watermarking importance, whereby the channel priority can change for different input signal data blocks. For a current input signal block, the most important channel is watermarked and the required processing time is determined. If this required processing time is shorter than a predefined application-dependent threshold, the next most important channel is marked and the additionally required processing time is determined, and so on. Due to the block-based nature of the audio watermarking including block overlap/add and due to the sensitivity of the resulting audio quality against blocking artifacts, several problems are solved in order to lead to acceptable performance and quality.
摘要翻译：在具有有限处理能力的环境中，实时数字音频信号水印是困难的。根据本发明，基于数据块的音频多信道信号中的信道关于水印重要性被优先化，由此对于不同的输入信号数据块，信道优先级可以改变。对于当前输入信号块，最重要的信道被加水印，并且确定所需的处理时间。如果这需要的处理时间比预定的应用程序相关的阈值短，则下一个最重要的通道被标记，另外需要处理时间被确定，等等。由于音频水印的基于块的性质包括块重叠/添加，并且由于所产生的音频质量对于块伪影的敏感性，所以解决了几个问题以便导致可接受的性能和质量。

10. 发明申请

US20130073065A1 METHOD AND APPARATUS FOR DETECTING WHICH ONE OF SYMBOLS OF WATERMARK DATA IS EMBEDDED IN A RECEIVED SIGNAL 有权
标题翻译：用于检测水印数据符号的接收信号中嵌入的方法和装置
公开(公告)号：US20130073065A1
公开(公告)日：2013-03-21
申请号：US13697089
申请日：2011-04-27
申请人： Xiaoming Chen , Peter Georg Baum , Michael Arnold , Ulrich Gries
发明人： Xiaoming Chen , Peter Georg Baum , Michael Arnold , Ulrich Gries
IPC分类号： G10L19/018
CPC分类号： G10L19/018
摘要： Watermark symbol detection requires a detection metric for deciding at decoder side which candidate symbol is embedded inside the audio or video signal content. The invention provides an improved detection metric processing that achieves a reliable detection of watermarks in the presence of additional noise and echoes, and that is adaptive to signal reception conditions and requires a decreased computational power. This is performed by taking into account the information contained in the echoes of the received audio signal in the decision metric and comparing it with the corresponding metric obtained from decoding a non-marked audio signal, based on recursive calculation of false positive detection rates of Correlations for all REFP Reference Pattern peaks in correlation result values. The watermark symbol corresponding to the reference sequence having the lowest false positive error is selected as the embedded one.
摘要翻译：水印符号检测需要用于在解码器侧确定哪个候选符号被嵌入在音频或视频信号内容内的检测度量。本发明提供了一种改进的检测度量处理，其在附加噪声和回波的存在下实现水印的可靠检测，并且其适应于信号接收条件并且需要降低的计算能力。这是通过考虑包含在决定度量中的接收到的音频信号的回波中的信息并且将其与从解码未标记的音频信号获得的相应度量相比较，基于相关性的假阳性检测率的递归计算来执行对于相关结果值中的所有REFP参考模式峰。选择与具有最低假正误差的参考序列相对应的水印符号作为嵌入的。

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