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1.发明申请公开(公告)号：US20130219443A1
公开(公告)日：2013-08-22
申请号：US13812871
申请日：2011-07-26
IPC分类号： H04N17/00
CPC分类号： H04N17/00 , H04N17/004
摘要： A method for estimating the type of the GoP structure of a plurality of video frames in a video stream by estimating their frame types includes: capturing frame sizes in bytes of every video frame subsequent to an initial I-frame to obtain an array of frame sizes by exploiting features of a transport layer carrying the video stream; converting, after a number of frames, the array of frame sizes into an array of zeros and ones; matching the binarized array of frame sizes to a number of predefined short basic binary patterns, said predefined binary patterns depicting all GoP structures to be considered; converting the result of said matching to form a single score value; and determining the particular pattern of the number of predefined patterns of binaries having the best score value, according to a predefined metric.
摘要翻译： 通过估计其帧类型来估计视频流中的多个视频帧的GoP结构的类型的方法包括：捕获在初始I帧之后的每个视频帧的字节中的帧大小，以获得帧大小的阵列 通过利用承载视频流的传输层的特征; 在多个帧之后将帧大小的数组转换为零和数组的数组; 将二进制化的帧大小阵列匹配到多个预定义的短基本二进制模式，所述预定义的二进制模式描述了要考虑的所有GoP结构; 转换所述匹配的结果以形成单个得分值; 以及根据预定义的度量确定具有最佳分数值的二进制文件的预定模式的数量的特定模式。
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2.发明申请METHODS AND APPARATUSES FOR TEMPORAL SYNCHRONISATION BETWEEN THE VIDEO BIT STREAM AND THE OUTPUT VIDEO SEQUENCE 有权视频位流与输出视频序列之间的时间同步的方法和装置公开(公告)号：US20130208814A1
公开(公告)日：2013-08-15
申请号：US13812890
申请日：2011-07-26
IPC分类号： H04N7/26
CPC分类号： H04N19/44 , H04N17/004 , H04N21/242 , H04N21/4302 , H04N21/4307 , H04N21/44004
摘要： A method for temporally synchronising an input bit stream of a video decoder with a processed video sequence decoded by an external video decoder includes the steps of: capturing the input bit stream and supplying it to a bit stream analyzer; parsing and analyzing the captured input bit stream by the bit stream analyzer; decoding the input bit stream and providing reconstructed images Nrec therefrom; storing the reconstructed images Nrec in a buffer; and comparing a processed video sequence received from the output side of the video decoder with each of the stored reconstructed images, to find a matching frame n* from the reconstructed images in the buffer.
摘要翻译： 一种用于将视频解码器的输入比特流与由外部视频解码器解码的经处理的视频序列进行时间同步的方法包括以下步骤：捕获输入比特流并将其提供给比特流分析器; 通过比特流分析器解析和分析捕获的输入比特流; 解码输入比特流并从其提供重建图像Nrec; 将重构图像Nrec存储在缓冲器中; 以及将从视频解码器的输出侧接收的经处理的视频序列与存储的重构图像中的每一个进行比较，以从缓冲器中的重建图像中找到匹配帧n *。
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3.发明授权Method and apparatus for assessing the quality of a video signal during encoding or compressing of the video signal 有权用于在视频信号的编码或压缩期间评估视频信号的质量的方法和装置公开(公告)号：US09077972B2
公开(公告)日：2015-07-07
申请号：US13812868
申请日：2011-07-29
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N19/85 , H04N17/00 , H04N19/61 , H04N19/14 , H04N19/154 , H04N19/166 , H04N19/177 , H04N19/48 , H04N21/6373 , H04N21/647 , H04N21/437 , H04N21/24 , H04N21/238
CPC分类号： H04N19/85 , H04N17/004 , H04N19/14 , H04N19/154 , H04N19/166 , H04N19/177 , H04N19/48 , H04N19/61 , H04N21/238 , H04N21/24 , H04N21/437 , H04N21/6373 , H04N21/64723
摘要： A method for assessing the quality of a video signal during encoding or compressing of the video signal includes: estimating the quality (Qcod) of the video signal using one or more parameters; and using at least one additional parameter to adjust the estimated video signal quality, wherein the at least one additional parameter includes the key-frame rate (kfr) of the video signal as a Group of Pictures (GOP)-length-related parameter. Adjustment of the estimated video signal quality is in accordance with the following equation: Qcod=(a1*kfr+a2)*exp(b*br)+c; where a1, a2, b, and c are coefficients and br is the bit-rate of the video signal.
摘要翻译： 一种在编码或压缩视频信号期间评估视频信号的质量的方法包括：使用一个或多个参数估计视频信号的质量（Qcod）; 以及使用至少一个附加参数来调整估计的视频信号质量，其中所述至少一个附加参数包括作为图像组（GOP）长度相关参数的视频信号的关键帧速率（kfr）。 估计视频信号质量的调整符合以下等式：Qcod =（a1 * kfr + a2）* exp（b * br）+ c; 其中a1，a2，b和c是系数，br是视频信号的比特率。
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公开(公告)号：US08531531B2
公开(公告)日：2013-09-10
申请号：US12413815
申请日：2009-03-30
IPC分类号： H04N17/00
CPC分类号： H04N17/00 , H04L41/5038 , H04L41/509
摘要： A method and an apparatus for estimating a quality of an audio-video signal includes calculating audio and video quality factors from audio and video technical characteristics. An audio-video quality factors interaction is computed from an interaction between the audio and video quality factors. At least one of an audio quality, a video quality and an audio-visual quality is computed using the audio and video quality factors and the audio-video quality factors interaction.
摘要翻译： 用于估计音频 - 视频信号的质量的方法和装置包括从音频和视频技术特性来计算音频和视频质量因子。 音视频品质因素相互作用是根据音频和视频品质因素之间的相互作用来计算的。 使用音频和视频质量因素和音频 - 视频质量因子交互来计算音频质量，视频质量和视听质量中的至少一个。
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公开(公告)号：US20090244289A1
公开(公告)日：2009-10-01
申请号：US12413815
申请日：2009-03-30
IPC分类号： H04N17/00
CPC分类号： H04N17/00 , H04L41/5038 , H04L41/509
摘要： A method and an apparatus for estimating a quality of an audio-video signal includes calculating audio and video quality factors from audio and video technical characteristics. An audio-video quality factors interaction is computed from an interaction between the audio and video quality factors. At least one of an audio quality, a video quality and an audio-visual quality is computed using the audio and video quality factors and the audio-video quality factors interaction.
摘要翻译： 用于估计音频 - 视频信号的质量的方法和装置包括从音频和视频技术特性来计算音频和视频质量因子。 音视频品质因素相互作用是根据音频和视频品质因素之间的相互作用来计算的。 使用音频和视频质量因素和音频 - 视频质量因子交互来计算音频质量，视频质量和视听质量中的至少一个。
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6.发明授权Method of and system for measuring quality of audio and video bit stream transmissions over a transmission chain 有权用于测量传输链上音频和视频位流传输质量的方法和系统公开(公告)号：US09374282B2
公开(公告)日：2016-06-21
申请号：US13823788
申请日：2011-09-12
申请人： Bernhard Feiten , Savvas Argyropoulos , Marie-Neige Garcia , Nils Leder , Peter List , Alexander Raake , Ulf Wuestenhagen
发明人： Bernhard Feiten , Savvas Argyropoulos , Marie-Neige Garcia , Nils Leder , Peter List , Alexander Raake , Ulf Wuestenhagen
CPC分类号： H04L43/00 , H04L41/069 , H04L41/5032 , H04L41/5035 , H04L43/04 , H04L43/0829 , H04N17/004
摘要： A method for measuring quality of packetized audio and video transmission over a transmission chain includes: providing one or more measurement detectors along the transmission chain; detecting, by the one or more measurement detectors, loss of bit stream packets at one or more measurement points; determining the unique identifier for each detected lost packet; sending, by the one or more measurement detectors, a list of lost packet identifiers to a central monitoring system; constructing, by the central monitoring system, a simulated stream for each measurement point based on a stored error-free stream and the received lost packet identifiers; and evaluating the simulated stream for deriving a quality score for each measurement point.
摘要翻译： 一种用于测量传输链上分组化音频和视频传输质量的方法，包括：沿传输链提供一个或多个测量检测器; 通过所述一个或多个测量检测器检测在一个或多个测量点处的位流分组的丢失; 确定每个检测到的丢失分组的唯一标识符; 通过一个或多个测量检测器向中央监控系统发送丢失的分组标识符的列表; 由中央监控系统基于存储的无错误流和接收的丢失分组标识符构建每个测量点的模拟流; 并评估模拟流以得出每个测量点的质量得分。
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7.发明授权Method and apparatus for objective video quality assessment based on continuous estimates of packet loss visibility 有权基于连续估计丢包可见度的客观视频质量评估方法和装置公开(公告)号：US09232217B2
公开(公告)日：2016-01-05
申请号：US13991907
申请日：2011-09-02
CPC分类号： H04N17/004 , H04N19/44 , H04N19/85 , H04N19/89
摘要： A method for assessing the quality of a transmitted video signal sequence at a receiver side includes: capturing the input video bit stream; extracting at least one feature or a set of features; determining the continuous probability of visibility for each packet loss event which occurred within a specific time interval; and employing the continuous probability of packet loss visibility as a weighting factor of the at least one feature or set of features extracted from the video bit stream to calculate an estimate of the overall quality, Q, of the transmitted video sequence.
摘要翻译： 用于评估接收机侧的发送视频信号序列的质量的方法包括：捕获输入视频比特流; 提取至少一个特征或一组特征; 确定在特定时间间隔内发生的每个分组丢失事件的可见性的连续概率; 并且采用分组丢失可见度的连续概率作为从视频比特流提取的至少一个特征或特征集合的加权因子，以计算所发送的视频序列的总体质量Q的估计。
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8.发明授权Methods and apparatuses for temporal synchronisation between the video bit stream and the output video sequence 有权视频比特流和输出视频序列之间的时间同步的方法和装置公开(公告)号：US09131216B2
公开(公告)日：2015-09-08
申请号：US13812890
申请日：2011-07-26
IPC分类号： H04N19/44 , H04N17/00 , H04N21/242 , H04N21/43 , H04N21/44
CPC分类号： H04N19/44 , H04N17/004 , H04N21/242 , H04N21/4302 , H04N21/4307 , H04N21/44004
摘要： A method for temporally synchronizing an input bit stream of a video decoder with a processed video sequence decoded by an external video decoder includes the steps of: capturing the input bit stream and supplying it to a bit stream analyzer; parsing and analyzing the captured input bit stream by the bit stream analyzer; decoding the input bit stream and providing reconstructed images Nrec therefrom; storing the reconstructed images Nrec in a buffer; and comparing a processed video sequence received from the output side of the video decoder with each of the stored reconstructed images, to find a matching frame n* from the reconstructed images in the buffer.
摘要翻译： 一种用于将视频解码器的输入比特流与由外部视频解码器解码的经处理的视频序列进行时间同步的方法包括以下步骤：捕获输入比特流并将其提供给比特流分析器; 通过比特流分析器解析和分析捕获的输入比特流; 解码输入比特流并从其提供重建图像Nrec; 将重构图像Nrec存储在缓冲器中; 以及将从视频解码器的输出侧接收的经处理的视频序列与存储的重构图像中的每一个进行比较，以从缓冲器中的重建图像中找到匹配帧n *。
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9.发明申请公开(公告)号：US20130271668A1
公开(公告)日：2013-10-17
申请号：US13991907
申请日：2011-09-02
IPC分类号： H04N17/00
CPC分类号： H04N17/004 , H04N19/44 , H04N19/85 , H04N19/89
摘要： A method for assessing the quality of a transmitted video signal sequence at a receiver side includes: capturing the input video bit stream; extracting at least one feature or a set of features; determining the continuous probability of visibility for each packet loss event which occurred within a specific time interval; and employing the continuous probability of packet loss visibility as a weighting factor of the at least one feature or set of features extracted from the video bit stream to calculate an estimate of the overall quality, Q, of the transmitted video sequence.
摘要翻译： 用于评估接收机侧的发送视频信号序列的质量的方法包括：捕获输入视频比特流; 提取至少一个特征或一组特征; 确定在特定时间间隔内发生的每个分组丢失事件的可见性的连续概率; 并且采用分组丢失可见度的连续概率作为从视频比特流提取的至少一个特征或特征集合的加权因子，以计算所发送的视频序列的总体质量Q的估计。
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10.发明授权Method for estimating the type of the group of picture structure of a plurality of video frames in a video stream 有权用于估计视频流中多个视频帧的图像结构组的类型的方法公开(公告)号：US09241156B2
公开(公告)日：2016-01-19
申请号：US13812871
申请日：2011-07-26
CPC分类号： H04N17/00 , H04N17/004
摘要： A method for estimating the type of the GoP structure of a plurality of video frames in a video stream by estimating their frame types includes: capturing frame sizes in bytes of every video frame subsequent to an initial I-frame to obtain an array of frame sizes by exploiting features of a transport layer carrying the video stream; converting, after a number of frames, the array of frame sizes into an array of zeros and ones; matching the binarized array of frame sizes to a number of predefined short basic binary patterns, said predefined binary patterns depicting all GoP structures to be considered; converting the result of said matching to form a single score value; and determining the particular pattern of the number of predefined patterns of binaries having the best score value, according to a predefined metric.
摘要翻译： 通过估计其帧类型来估计视频流中的多个视频帧的GoP结构的类型的方法包括：捕获在初始I帧之后的每个视频帧的字节中的帧大小，以获得帧大小的阵列 通过利用承载视频流的传输层的特征; 在多个帧之后将帧大小的数组转换为零和数组的数组; 将二进制化的帧大小阵列匹配到多个预定义的短基本二进制模式，所述预定义的二进制模式描述了要考虑的所有GoP结构; 转换所述匹配的结果以形成单个得分值; 以及根据预定义的度量确定具有最佳分数值的二进制文件的预定模式的数量的特定模式。
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