发明名称 |
Bit-depth scalability |
摘要 |
To increase efficiency of a bit-depth scalable data-stream an inter-layer prediction is obtained by mapping samples of the representation of the picture or video source data with a first picture sample bit-depth from a first dynamic range corresponding to the first picture sample bit-depth to a second dynamic range greater than the first dynamic range and corresponding to a second picture sample bit-depth being higher than the first picture sample bit-depth by use of one or more global mapping functions being constant within the picture or video source data or varying at a first granularity, and a local mapping function locally modifying the one or more global mapping functions and varying at a second granularity smaller than the first granularity, with forming the quality-scalable data-stream based on the local mapping function such that the local mapping function is derivable from the quality-scalable data-stream. |
申请公布号 |
EP2835976(B1) |
申请公布日期 |
2016.09.21 |
申请号 |
EP20140187185 |
申请日期 |
2008.04.16 |
申请人 |
GE VIDEO COMPRESSION, LLC |
发明人 |
WIEGAND, THOMAS;WINKEN, MARTIN |
分类号 |
H04N19/117;H04N19/184;H04N19/33;H04N19/36;H04N19/80 |
主分类号 |
H04N19/117 |
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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