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1.
公开(公告)号:US20150281709A1
公开(公告)日:2015-10-01
申请号:US14227729
申请日:2014-03-27
申请人: Vered Bar Bracha , Segev Ravgad , Tal Taz Azogui , Yiting Liao , Vallabhajosyula Zulu Somayazulu
发明人: Vered Bar Bracha , Segev Ravgad , Tal Taz Azogui , Yiting Liao , Vallabhajosyula Zulu Somayazulu
IPC分类号: H04N19/37 , H04N19/463
CPC分类号: H04N19/36 , H04N19/132 , H04N19/152 , H04N19/154 , H04N19/164 , H04N19/187 , H04N19/31 , H04N19/33 , H04N19/65
摘要: Multi-layered video structures are scaled over a range of perceived quality levels. An estimated Mean Opinion Score (eMOS)-based encoder control loop is utilized to determine one or more encoder key performance index (KPI) associated with a particular perceived quality level. A KPI-based encoder control loop is then utilized to guide generation of a hierarchical structure having quality and/or temporal and/or spatial enhancement layers, without recalculating eMOS for the scalable structure. In addition, eMOS is used to guide the generation of a hierarchical structure at best-perceived quality levels for a given bitrate budget. Rate adaptation may occur by dropping segments, changing hierarchical structure, or changing the KPI target values. With the structure scaled as a function of perceived quality, perceived quality is impacted predictably as the encoding rate is adapted.
摘要翻译: 多层视频结构在一系列感知质量水平上缩放。 使用基于平均意见得分(eMOS)的编码器控制环来确定与特定感知质量水平相关联的一个或多个编码器关键性能指标(KPI)。 然后,基于KPI的编码器控制环路用于指导具有质量和/或时间和/或空间增强层的层次结构的生成,而不重新计算用于可伸缩结构的eMOS。 此外,eMOS用于指定给定比特率预算的最佳感知质量水平的层次结构生成。 速率调整可以通过丢弃段,改变层次结构或改变KPI目标值而发生。 随着结构作为感知质量的函数而变化,随着编码率的改变,感知质量受到可预测的影响。
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2.
公开(公告)号:US09591316B2
公开(公告)日:2017-03-07
申请号:US14227729
申请日:2014-03-27
申请人: Vered Bar Bracha , Segev Ravgad , Tal Taz Azogui , Yiting Liao , Vallabhajosyula Zulu Somayazulu
发明人: Vered Bar Bracha , Segev Ravgad , Tal Taz Azogui , Yiting Liao , Vallabhajosyula Zulu Somayazulu
IPC分类号: H04N19/37 , H04N19/36 , H04N19/132 , H04N19/164 , H04N19/187 , H04N19/33 , H04N19/31
CPC分类号: H04N19/36 , H04N19/132 , H04N19/152 , H04N19/154 , H04N19/164 , H04N19/187 , H04N19/31 , H04N19/33 , H04N19/65
摘要: Multi-layered video structures are scaled over a range of perceived quality levels. An estimated Mean Opinion Score (eMOS)-based encoder control loop is utilized to determine one or more encoder key performance index (KPI) associated with a particular perceived quality level. A KPI-based encoder control loop is then utilized to guide generation of a hierarchical structure having quality and/or temporal and/or spatial enhancement layers, without recalculating eMOS for the scalable structure. In addition, eMOS is used to guide the generation of a hierarchical structure at best-perceived quality levels for a given bitrate budget. Rate adaptation may occur by dropping segments, changing hierarchical structure, or changing the KPI target values. With the structure scaled as a function of perceived quality, perceived quality is impacted predictably as the encoding rate is adapted.
摘要翻译: 多层视频结构在一系列感知质量水平上缩放。 使用基于平均意见得分(eMOS)的编码器控制环来确定与特定感知质量水平相关联的一个或多个编码器关键性能指标(KPI)。 然后,基于KPI的编码器控制环路用于指导具有质量和/或时间和/或空间增强层的层次结构的生成,而不重新计算用于可伸缩结构的eMOS。 此外,eMOS用于指定给定比特率预算的最佳感知质量水平的层次结构生成。 速率调整可以通过丢弃段,改变层次结构或改变KPI目标值而发生。 随着结构作为感知质量的函数而变化,随着编码率的改变,感知质量受到可预测的影响。
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