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    • 23. 发明授权
    • Video quality monitoring
    • 视频质量监控
    • US08885050B2
    • 2014-11-11
    • US13025558
    • 2011-02-11
    • Beibei WangDekun ZouRan DingTao LiuSitaram BhagavathyNiranjan NarvekarJeffrey A. BloomGlenn L. Cash
    • Beibei WangDekun ZouRan DingTao LiuSitaram BhagavathyNiranjan NarvekarJeffrey A. BloomGlenn L. Cash
    • H04N17/00
    • H04N17/004
    • Systems and methods of perceptual quality monitoring of video information, communications, and entertainment that can estimate the perceptual quality of video with high accuracy, and can be used to produce quality scores that better correlate with subjective quality scores of an end user. The systems and methods of perceptual quality monitoring of video can generate, from an encoded input video bitstream, estimates of one or more quality parameters relating to the video, such as the coding bit rate parameter, the video frame rate parameter, and the packet loss rate parameter, and provide these video quality parameter estimates to a predetermined video quality estimation model. Because the estimates of the video quality parameters are generated from the encoded input video bitstream as it is being received, the systems and methods are suitable for use as QoE monitoring tools.
    • 视频信息,通信和娱乐的感知质量监控的系统和方法可以高精度地估计视频的感知质量,并且可以用于产生与最终用户的主观质量得分更好相关的质量分数。 视频的感知质量监视的系统和方法可以从编码的输入视频比特流中产生与视频相关的一个或多个质量参数的估计,例如编码比特率参数,视频帧速率参数和分组丢失 速率参数,并将这些视频质量参数估计提供给预定的视频质量估计模型。 因为视频质量参数的估计在编码的输入视频比特流被接收时产生,所以系统和方法适合用作QoE监视工具。
    • 24. 发明申请
    • AUDIO VIDEO OFFSET DETECTOR
    • 音频视频偏移检测器
    • US20140192263A1
    • 2014-07-10
    • US14209036
    • 2014-03-13
    • Jeffrey A. BloomDekun ZouRan Ding
    • Jeffrey A. BloomDekun ZouRan Ding
    • H04N5/04
    • H04N5/04H04N21/233H04N21/23418H04N21/4307H04N21/4394H04N21/44008
    • Systems and methods of measuring a temporal offset between audio content and video content that employ audio fingerprints from an audio signal in the audio content, and video fingerprints from video frames in the video content. The systems obtain reference audio and video fingerprints prior to transmission of video over a media channel, and obtain target audio and video fingerprints subsequent to transmission of the video over the media channel. Each fingerprint has an associated time stamp. Using the reference and target audio fingerprints and their associated time stamps, the systems determine an audio time stamp offset. Using the reference and target video fingerprints and their associated time stamps, the systems determine a video time stamp offset. Using the audio and video time stamp offsets, the systems determine a temporal offset between the video content and the audio content introduced by the media channel.
    • 测量在音频内容中使用音频指纹的音频内容和视频内容之间的时间偏移的系统和方法,以及来自视频内容中视频帧的视频指纹。 在通过媒体信道传输视频之前,系统获得参考音频和视频指纹,并且在通过媒体信道传输视频之后获得目标音频和视频指纹。 每个指纹都有相关的时间戳。 使用参考和目标音频指纹及其相关的时间戳,系统确定音频时间戳偏移量。 使用参考和目标视频指纹及其相关的时间戳,系统确定视频时间戳偏移量。 使用音频和视频时间戳偏移,系统确定视频内容和由媒体频道引入的音频内容之间的时间偏移。
    • 29. 发明授权
    • Content identification using fingerprint matching
    • 内容识别使用指纹匹配
    • US08805827B2
    • 2014-08-12
    • US13215402
    • 2011-08-23
    • Sitaram BhagavathyJeffrey A. BloomDekun ZouWen Chen
    • Sitaram BhagavathyJeffrey A. BloomDekun ZouWen Chen
    • G06F17/30
    • G06F17/30784G06K9/00744
    • Systems and methods of identifying media content, such as video content, that employ fingerprint matching at the level of video frames. The presently disclosed systems and methods of identifying media content can extract one or more fingerprints from a plurality of video frames included in query video content, and, for each of the plurality of video frames from the query video content, perform frame-level fingerprint matching of the extracted fingerprints against fingerprints extracted from video frames included in a plurality of reference video content. Using the results of such frame-level fingerprint matching, the presently disclosed systems and methods of identifying media content can identify the query content in relation to an overall sequence of video frames from at least one of the plurality of reference content, and/or in relation to respective video frames included in a sequence of video frames from the reference content.
    • 识别在视频帧级采用指纹匹配的媒体内容(诸如视频内容)的系统和方法。 目前公开的识别媒体内容的系统和方法可以从查询视频内容中包括的多个视频帧中提取一个或多个指纹,并且对于来自查询视频内容的多个视频帧中的每一个,执行帧级指纹匹配 所提取的指纹针对从包括在多个参考视频内容中的视频帧提取的指纹。 使用这种帧级指纹匹配的结果,目前公开的识别媒体内容的系统和方法可以相对于来自多个参考内容中的至少一个的视频帧的总体序列来识别查询内容,和/或 与包括在来自参考内容的视频帧序列中的各个视频帧的关系。
    • 30. 发明申请
    • SUPPORT VECTOR REGRESSION BASED VIDEO QUALITY PREDICTION
    • 支持向量回归的视频质量预测
    • US20130027568A1
    • 2013-01-31
    • US13193802
    • 2011-07-29
    • Dekun ZouBeibei Wang
    • Dekun ZouBeibei Wang
    • H04N17/00
    • H04N7/50H04N17/004H04N19/172H04N19/61
    • Systems and methods of objective video quality measurement based on support vector machines. The video quality measurement systems can obtain information pertaining to features of a target training video, obtain corresponding information pertaining to features of a reference version of the target training video, and employ the target training features and/or the reference training features to build video quality models using such support vector machines. Based on the target training features and/or the reference training features used to build such video quality models, the video quality models can be made to conform more closely to the human visual system. Moreover, using such video quality models in conjunction with target features of a target video whose perceptual quality is to be measured, and/or reference features of a reference video, the video quality measurement systems can be employed to predict measurements of the perceptual quality of such a target video with increased accuracy.
    • 基于支持向量机的客观视频质量测量的系统和方法。 视频质量测量系统可以获得关于目标训练视频的特征的信息,获得与目标训练视频的参考版本的特征相关的相关信息,并且使用目标训练特征和/或参考训练特征来构建视频质量 使用这种支持向量机的模型。 基于用于构建这样的视频质量模型的目标训练特征和/或参考训练特征,可以使视频质量模型更符合人类视觉系统。 此外,使用这样的视频质量模型结合目标视频的感知质量要被测量的目标特征和/或参考视频的参考特征,可以采用视频质量测量系统来预测感知质量的测量 这样的目标视频具有更高的准确性。