- 专利标题: Inter-layer prediction between layers of different dynamic sample value range
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申请号: US14273376申请日: 2014-05-08
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公开(公告)号: US09712816B2公开(公告)日: 2017-07-18
- 发明人: Jens-Uwe Garbas , Herbert Thoma
- 申请人: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
- 申请人地址: DE Munich
- 专利权人: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- 当前专利权人: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- 当前专利权人地址: DE Munich
- 代理机构: Perkins Coie LLP
- 代理商 Michael A. Glenn
- 主分类号: H04N7/12
- IPC分类号: H04N7/12 ; H04N19/11 ; H04N19/176 ; H04N19/147 ; H04N19/172 ; H04N19/46 ; H04N19/196 ; H04N19/463 ; H04N19/14 ; H04N19/17 ; H04N19/39 ; H04N19/167 ; H04N19/98
摘要:
The ratio between coding quality on the one hand and coding rate on the other hand is increased. To this end, a global predictor and a local predictor are used in combination. The global predictor derives a global tone-mapping function based on a statistical analysis of pairs of values of co-located samples in the first tone-mapped version and the second version of the picture, and applies the global tone-mapping function onto the first tone-mapped version of the picture. The local predictor locally derives a locally varying tone-mapping function based on a statistical analysis of values of co-located samples in the second version of the picture and the globally predicted reference picture in units of sub-portions into which the globally predicted reference picture and the second version of the picture are partitioned, and applies the locally varying tone-mapping function onto the globally predicted reference picture.
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