公开(公告)号：US08554545B2

公开(公告)日：2013-10-08

申请号：US13341092

申请日：2011-12-30

申请人： Venugopal Srinivasan ,  Alexander Pavlovich Topchy

发明人： Venugopal Srinivasan ,  Alexander Pavlovich Topchy

IPC分类号： G10L19/14

CPC分类号： H04H60/37 ,  G11B20/10 ,  H04H20/31 ,  H04H60/58

摘要： Methods and apparatus to extract data encoded in media content are disclosed. An example method includes sampling a media content signal to generate digital samples, determining a frequency domain representation of the digital samples, determining a first rank of a first frequency in the frequency domain representation, determining a second rank of a second frequency in the frequency domain representation, combining the first rank and the second rank with a set of ranks to create a combined set of ranks, comparing the combined set of ranks to a set of reference sequences, determining a data represented by the combined set of ranks based on the comparison, and storing the data in a memory device.

摘要翻译： 公开了提取在媒体内容中编码的数据的方法和装置。 一种示例性方法包括对媒体内容信号进行采样以产生数字样本，确定数字样本的频域表示，确定频域表示中的第一频率的第一等级，确定频域中的第二频率的第二等级 表示，将第一等级和第二等级与一组等级组合以创建组合的一组队列，将组合的队列与一组参考序列进行比较，基于比较来确定由组合的队列组合表示的数据 ，并将数据存储在存储器件中。

公开(公告)号：US20130259380A1

公开(公告)日：2013-10-03

申请号：US13434330

申请日：2012-03-29

申请人： Venugopal Srinivasan ,  Padmanabhan Soundararajan

发明人： Venugopal Srinivasan ,  Padmanabhan Soundararajan

IPC分类号： G06K9/46

CPC分类号： G06K9/00771 ,  G06K9/00221

摘要： Methods and apparatus to count people in images are disclosed. An example method includes generating a first fluctuation factor for a first frame by averaging fluctuation values of a random set of pixels of the first frame; generating a second fluctuation factor for a person indication area of the first frame by averaging fluctuation values of pixels of the person indication area; and marking the person indication area as a false positive when the second fluctuation factor is less than or equal to the first fluctuation factor.

摘要翻译： 披露了图像中计数人的方法和设备。 示例性方法包括：通过对第一帧的随机的像素集合的波动值进行平均来生成第一帧的第一波动因子; 通过平均人员指示区域的像素的波动值来生成第一帧的人物指示区域的第二波动因子; 并且当所述第二波动因子小于或等于所述第一波动因子时，将所述人指示区域标记为假阳性。

公开(公告)号：US08548373B2

公开(公告)日：2013-10-01

申请号：US12760712

申请日：2010-04-15

申请人： John C. Peiffer ,  Michael A. Hicks ,  David H. Wright ,  Paul M. Mears ,  Venugopal Srinivasan ,  Daozheng Lu ,  Paul C. Kempter

发明人： John C. Peiffer ,  Michael A. Hicks ,  David H. Wright ,  Paul M. Mears ,  Venugopal Srinivasan ,  Daozheng Lu ,  Paul C. Kempter

IPC分类号： H04H60/44

CPC分类号： H04H60/59 ,  H04H60/37 ,  H04H60/58 ,  H04H2201/90 ,  H04N7/17318 ,  H04N21/235 ,  H04N21/4331 ,  H04N21/4394 ,  H04N21/44213 ,  H04N21/812 ,  H04N21/8352

摘要： Methods and apparatus for identifying a digital audio signal are described. An example apparatus for identifying a digital audio signal includes an input to receive the digital audio signal, which includes data from a broadcast or a stored digital program signal. The example apparatus also includes a detector to receive the digital audio signal from the input and determine whether the received digital audio signal is uncompressed as received at the input; a decoder to receive the digital audio signal from the detector when the digital audio signal is compressed as received at the input and identify any first program-identifying code in an auxiliary field of the compressed digital audio signal; and a code reader to receive the digital audio signal from the detector when the digital audio signal is uncompressed as received at the input and receive the digital audio signal from a decompressor when the digital audio signal is compressed as received at the input. Additionally, the code reader is to identify any second program-identifying code in a decompressed or uncompressed portion of the digital audio signal when the first program-identifying code is not identified in the auxiliary field or when the digital audio signal is uncompressed as received at the input.

摘要翻译： 描述用于识别数字音频信号的方法和装置。 用于识别数字音频信号的示例性装置包括用于接收包括来自广播或存储的数字节目信号的数据的数字音频信号的输入。 该示例设备还包括一个检测器，用于从输入端接收数字音频信号，并确定接收到的数字音频信号是否在输入端接收到的未被压缩; 解码器，当数字音频信号被压缩成在输入处接收时，从检测器接收数字音频信号，并识别压缩数字音频信号的辅助字段中的任何第一节目识别码; 以及代码阅读器，当数字音频信号在输入端被接收时未被压缩时从检测器接收数字音频信号，并且当数字音频信号在输入端被接收时从解压缩器接收数字音频信号。 另外，当第一节目识别码在辅助字段中未识别时或当数字音频信号未被压缩为如在第一节目识别码处被接收时，代码阅读器将识别数字音频信号的解压缩或未压缩部分中的任何第二节目识别码 输入。

公开(公告)号：US20130194507A1

公开(公告)日：2013-08-01

申请号：US13800249

申请日：2013-03-13

申请人： Venugopal Srinivasan ,  John C. Peiffer

发明人： Venugopal Srinivasan ,  John C. Peiffer

IPC分类号： H04N5/265

CPC分类号： H04N5/265 ,  G10L19/008 ,  G10L19/032 ,  G10L19/173 ,  G11B20/00007 ,  G11B20/10527 ,  G11B27/034 ,  G11B2020/00028 ,  G11B2020/00036 ,  G11B2020/10546

摘要： Methods, apparatus and articles of manufacture for mixing compressed digital bit streams are disclosed. An example method disclosed herein comprises acquiring a frame associated with a first compressed digital bit stream, unpacking the frame to obtain a plurality of original transform coefficient sets, and modifying the plurality of original transform coefficient sets to mix a second digital bit stream with the first compressed digital bit stream.

摘要翻译： 公开了用于混合压缩数字比特流的方法，装置和制品。 本文公开的示例性方法包括获取与第一压缩数字比特流相关联的帧，解包所述帧以获得多个原始变换系数集合，以及修改所述多个原始变换系数集合以将第二数字比特流与所述第一数字比特流混合 压缩数字位流。

公开(公告)号：US08457972B2

公开(公告)日：2013-06-04

申请号：US13619023

申请日：2012-09-14

申请人： Alexander Topchy ,  Venugopal Srinivasan ,  Arun Ramaswamy

发明人： Alexander Topchy ,  Venugopal Srinivasan ,  Arun Ramaswamy

IPC分类号： G10L21/00 ,  H04H60/32

CPC分类号： H04H60/58 ,  H04H20/14

摘要： Methods and apparatus for characterizing media are described. A disclosed example apparatus includes a transformer, a decision metric processor, a signature determiner, and a processor to implement the transformer, the decision metric processor, and/or the signature determiner. The example transformer is to convert at least a portion of a block of audio into a frequency domain representation including a plurality of frequency components. The example decision metric processor is to: define a band of the frequency components; determine a difference in energy between a first convolution of a first complex vector with a first group of frequency bins in the band and a second convolution of a second complex vector with a second group of frequency bins in the band; and determine a decision metric for the band based on the difference. The example signature determiner is to determine a signature based on a value of the decision metric.

摘要翻译： 描述用于表征介质的方法和装置。 所公开的示例性设备包括变压器，决策度量处理器，签名确定器和用于实现变压器的处理器，决策度量处理器和/或签名确定器。 示例性变压器是将音频块的至少一部分转换为包括多个频率分量的频域表示。 示例决策度量处理器是：定义频率分量的频带; 确定第一复矢量与频带中的第一组频率仓的第一卷积之间的能量差和第二复矢量与频带中的第二组频率仓的第二卷积; 并且基于该差异来确定所述频带的决策度量。 示例性签名确定器是基于决策度量的值来确定签名。

公开(公告)号：US20130114831A1

公开(公告)日：2013-05-09

申请号：US13730271

申请日：2012-12-28

申请人： Alexander Pavlovich Topchy ,  Arun Ramaswamy ,  Venugopal Srinivasan

发明人： Alexander Pavlovich Topchy ,  Arun Ramaswamy ,  Venugopal Srinivasan

IPC分类号： G10L19/018

CPC分类号： G10L19/018 ,  G10L19/022 ,  G10L19/06 ,  G10L25/18 ,  H04H20/31 ,  H04H60/31 ,  H04H2201/50 ,  H04N19/467 ,  H04N21/23892 ,  H04N21/8358

摘要： Encoding and decoding methods and apparatus as described. An example method of obtaining auxiliary information in an audio signal using a plurality of frequency components residing in a plurality of code bands comprises transforming an audio signal into a frequency domain representation; determining characteristic of frequencies of the frequency domain representation that may contain the auxiliary information; normalizing across the code bands the characteristics of frequencies of the frequency domain representation in a respective one of the code bands that may contain the auxiliary information, wherein the normalization is carried out against a characteristic of a frequency in that code band; summing the normalized characteristics of the frequencies representative of auxiliary information to determine a sum for a frequency representative of auxiliary information; and determining that the sum is representative of the auxiliary information.

摘要翻译： 编码和解码方法和装置如上所述。 使用驻留在多个码带中的多个频率分量在音频信号中获得辅助信息的示例方法包括将音频信号变换为频域表示; 确定可能包含辅助信息的频域表示的频率特性; 在编码带上对可能包含辅助信息的相应一个码带中的频域表示的频率的特性进行归一化，其中针对该码带中的频率的特性执行归一化; 对代表辅助信息的频率的归一化特征求和，以确定表示辅助信息的频率的和; 并且确定所述和代表所述辅助信息。

公开(公告)号：US08359205B2

公开(公告)日：2013-01-22

申请号：US12551220

申请日：2009-08-31

申请人： Venugopal Srinivasan ,  Alexander Topchy

发明人： Venugopal Srinivasan ,  Alexander Topchy

IPC分类号： G10L19/00

CPC分类号： G06F17/30743 ,  G11B20/10 ,  H04H20/31 ,  H04H60/37 ,  H04H60/58 ,  H04H2201/50

摘要： Methods and apparatus to audio watermarking and watermark detection and extracted are described herein. An example method includes receiving a media content signal, sampling the media content signal to generate samples, storing the samples in a buffer, determining a first sequence of samples in the buffer, determining a second sequence of samples in the buffer, wherein the second sequence of samples is of substantially equal length as the first sequence of samples, calculating an average of the first sequence of samples and the second sequence of samples to generate an average sequence of samples, extracting an identifier from the average sequence of samples, and storing the identifier in a tangible memory.

摘要翻译： 本文描述了音频水印和​​水印检测和提取的方法和装置。 示例性方法包括：接收媒体内容信号，对媒体内容信号进行采样以产生样本，将样本存储在缓冲器中，确定缓冲器中的第一采样序列，确定缓冲器中的第二采样序列，其中第二序列 的样本具有与第一样本序列基本相同的长度，计算第一样本序列的平均值和第二样本序列以生成平均样本序列，从平均样本序列中提取标识符，并存储 标识符在有形存储器中。

公开(公告)号：US20120254908A1

公开(公告)日：2012-10-04

申请号：US13526415

申请日：2012-06-18

申请人： Paul M. Mears ,  Arun Ramaswamy ,  Venugopal Srinivasan ,  Dan Nelson ,  Kevin K. Deng ,  John Peiffer

发明人： Paul M. Mears ,  Arun Ramaswamy ,  Venugopal Srinivasan ,  Dan Nelson ,  Kevin K. Deng ,  John Peiffer

IPC分类号： H04N21/258

CPC分类号： H04N21/4758 ,  H04H60/31 ,  H04H60/33 ,  H04H60/37 ,  H04H60/45 ,  H04H60/56 ,  H04H2201/90 ,  H04N21/442

摘要： Methods and apparatus to collect audience information associated with a media presentation are described herein. In an example method includes counting a first number of individuals proximate to a media presentation device, counting a second number of signals received from one or more portable devices, each of which is associated with a respective one of one or more monitored individuals, comparing the first number of individuals to the second number of signals, and determining a third number of unidentified ones of the individuals proximate to the media presentation device based on the comparison of the first number of individuals to the second number of signals.

摘要翻译： 本文描述了收集与媒体呈现相关联的受众信息的方法和装置。 在一个示例性方法中包括计数靠近媒体呈现设备的第一数量的个体，对从一个或多个便携式设备接收的第二数量的信号进行计数，每个便携式设备与一个或多个被监控个体中的相应一个相关联， 基于所述第一数量个体与所述第二数量信号的比较，确定靠近所述媒体呈现装置的所述个体中的不明身份的第三数量的第一数量的第二数量的个体。

公开(公告)号：US20120071995A1

公开(公告)日：2012-03-22

申请号：US13250663

申请日：2011-09-30

申请人： Alexander Topchy ,  Venugopal Srinivasan ,  Arun Ramaswamy

发明人： Alexander Topchy ,  Venugopal Srinivasan ,  Arun Ramaswamy

IPC分类号： G06F17/00

CPC分类号： H04H60/58 ,  H04H20/14

摘要： Methods and apparatus for characterizing media are described. An example apparatus includes a transformer to convert at least a portion of a block of audio into a frequency domain representation including a plurality of frequency components; a decision metric processor to: define a band of frequency components having real and imaginary spectral components, define a plurality of frequency bins within the band, determine respective difference functions for each of the frequency bins using a product of the real and imaginary spectral components of a corresponding group of the frequency bins, the corresponding group for a first one of the frequency bins including at least the first one of the frequency bins and a second one of the frequency bins selected based on the first frequency bin, and determine a decision metric by summing the difference functions; and a signature determiner to determine a signature based on the decision metric.

摘要翻译： 描述用于表征介质的方法和装置。 示例性装置包括：变换器，用于将音频块的至少一部分转换成包括多个频率分量的频域表示; 决策度量处理器，用于：定义具有实数和虚数谱分量的频率分量的频带，在所述频带内定义多个频率仓，使用所述频域的实数和虚谱分量的乘积确定每个所述频率仓的相应差函数， 相应的频率仓组，用于包括频率仓中的至少第一频率仓的第一个频率仓的相应组，以及基于第一频率仓选择的频率仓中的第二个，并且确定一个决定度量 通过总结差异函数; 以及签名确定器，用于基于所述决策度量来确定签名。

公开(公告)号：US20110264455A1

公开(公告)日：2011-10-27

申请号：US12767422

申请日：2010-04-26

申请人： Daniel J. Nelson ,  Venugopal Srinivasan ,  John C. Peiffer

发明人： Daniel J. Nelson ,  Venugopal Srinivasan ,  John C. Peiffer

IPC分类号： G10L19/00

CPC分类号： G10L19/018 ,  H04H20/14 ,  H04H60/31 ,  H04H60/58 ,  H04H2201/50 ,  H04N21/23892 ,  H04N21/4394

摘要： Example methods, apparatus and articles of manufacture to perform audio watermark decoding are disclosed. A disclosed example method includes receiving an audio signal including an audience measurement code embedded therein using a first plurality of frequency components, sampling the audio signal, transforming the sampled audio signal into a first frequency domain representation, determining whether the code is detectable in the first plurality of frequency components of the first frequency domain representation, and when the code is not detected in the first plurality of frequency components, examining a second plurality of frequency components of a second frequency domain representation to determine whether the code is detected, the second plurality of frequency components being offset from the first plurality of frequency components by a first offset, the first offset corresponding to a sampling frequency mismatch.

摘要翻译： 公开了用于执行音频水印解码的示例性方法，装置和制造。 所公开的示例性方法包括使用第一多个频率分量接收包括其中嵌入的观众测量码的音频信号，对音频信号进行采样，将采样的音频信号变换为第一频域表示，确定代码是否可在第一 第一频域表示的多个频率分量，以及当在第一多个频率分量中未检测到代码时，检查第二频域表示的第二多个频率分量以确定是否检测到代码，第二多个 频率分量从第一多个频率分量偏移第一偏移，第一偏移对应于采样频率失配。