发明名称 |
SCALABLE VIDEO ENCODING RATE ADAPTATION BASED ON PERCEIVED QUALITY |
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. |
申请公布号 |
EP3123720(A1) |
申请公布日期 |
2017.02.01 |
申请号 |
EP20150770428 |
申请日期 |
2015.03.26 |
申请人 |
Intel IP Corporation |
发明人 |
BAR BRACHA, Vered;RAVGAD, Segev;AZOGUI, Tal Taz;LIAO, Yiting;SOMAYAZULU, Vallabhajosyula S. |
分类号 |
H04N19/30;H04N19/423;H04N19/50 |
主分类号 |
H04N19/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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