公开(公告)号：US09203708B2

公开(公告)日：2015-12-01

申请号：US13388818

申请日：2012-01-16

申请人： David Lindegren ,  Richard Tano

发明人： David Lindegren ,  Richard Tano

IPC分类号： H04N21/647 ,  H04L29/06 ,  H04L12/24 ,  H04N17/00

CPC分类号： H04L41/5067 ,  H04L65/80 ,  H04N17/004 ,  H04N21/647

摘要： One or more embodiments herein dynamically and objectively estimate user-perceived quality of an encoded video stream in dependence on the underlying video content of that stream. Estimation processing according to these embodiments includes generating a chronological sequence of the absolute or relative sizes of encoded video frames in the stream. Processing further entails analyzing this sequence to identify a plurality of reference characteristics that are defined in a reference model. These reference characteristics are more specifically defined in the reference model as parameters that characterize or are otherwise associated with content-dependent variations in user-perceived quality. For example, the reference characteristics in some embodiments comprise reference patterns or reference statistical measures that have been determined based on analyzing frame size sequences generated for reference video streams with known qualities. Regardless, processing finally includes estimating the user-perceived quality of the stream based on the identified reference characteristics, according to the reference model.

摘要翻译： 本文中的一个或多个实施例根据该流的底层视频内容动态和客观地估计编码视频流的用户感知质量。 根据这些实施例的估计处理包括生成流中编码视频帧的绝对或相对大小的时间顺序。 处理进一步需要分析该序列以识别在参考模型中定义的多个参考特征。 这些参考特征在参考模型中被更具体地定义为表征或以其他方式与用户感知质量的内容相关变化相关联的参数。 例如，一些实施例中的参考特征包括已经基于分析为已知质量的参考视频流生成的帧大小序列而确定的参考模式或参考统计量度。 无论如何，处理最终包括根据参考模型基于所识别的参考特征来估计流的用户感知质量。

公开(公告)号：US20130081071A1

公开(公告)日：2013-03-28

申请号：US13388818

申请日：2012-01-16

申请人： David Lindegren ,  Richard Tano

发明人： David Lindegren ,  Richard Tano

IPC分类号： H04N21/24

CPC分类号： H04L41/5067 ,  H04L65/80 ,  H04N17/004 ,  H04N21/647

摘要： One or more embodiments herein dynamically and objectively estimate user-perceived quality of an encoded video stream in dependence on the underlying video content of that stream. Estimation processing according to these embodiments includes generating a chronological sequence of the absolute or relative sizes of encoded video frames in the stream. Processing further entails analyzing this sequence to identify a plurality of reference characteristics that are defined in a reference model. These reference characteristics are more specifically defined in the reference model as parameters that characterize or are otherwise associated with content-dependent variations in user-perceived quality. For example, the reference characteristics in some embodiments comprise reference patterns or reference statistical measures that have been determined based on analyzing frame size sequences generated for reference video streams with known qualities. Regardless, processing finally includes estimating the user-perceived quality of the stream based on the identified reference characteristics, according to the reference model.

摘要翻译： 本文中的一个或多个实施例根据该流的底层视频内容动态和客观地估计编码视频流的用户感知质量。 根据这些实施例的估计处理包括生成流中编码视频帧的绝对或相对大小的时间顺序。 处理进一步需要分析该序列以识别在参考模型中定义的多个参考特征。 这些参考特征在参考模型中被更具体地定义为表征或以其他方式与用户感知质量的内容相关变化相关联的参数。 例如，一些实施例中的参考特征包括已经基于分析为已知质量的参考视频流生成的帧大小序列而确定的参考模式或参考统计量度。 无论如何，处理最终包括根据参考模型基于所识别的参考特征来估计流的用户感知质量。