发明授权
- 专利标题: Context determination for entropy coding of run-length encoded transform coefficients
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申请号: US14760514申请日: 2013-01-16
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公开(公告)号: US10291912B2公开(公告)日: 2019-05-14
- 发明人: Dake He , Tianying Ji , Jing Wang , Xiaofeng Wang
- 申请人: BlackBerry Limited
- 申请人地址: CA Waterloo, Ontario
- 专利权人: BlackBerry Limited
- 当前专利权人: BlackBerry Limited
- 当前专利权人地址: CA Waterloo, Ontario
- 代理机构: Rowand LLP
- 国际申请: PCT/CA2013/050021 WO 20130116
- 国际公布: WO2014/110652 WO 20140724
- 主分类号: H04N19/60
- IPC分类号: H04N19/60 ; H04N19/13 ; H04N19/159 ; H04N19/176 ; H04N19/463 ; H04N19/14 ; H04N19/18 ; H04N19/593 ; H04N19/91 ; H04N19/129
摘要:
Methods and devices for encoding and decoding video using mode-dependent context determination in the case of level-run pair coding of transform coefficients are described. Intra-coding modes may be grouped into classes and each class may be associated with a partitioning of a coefficient group into regions. The region in which a coefficient falls determines, in part, the context selected for encoding bins associated with that coefficient, including a level, if the coefficient is non-zero, and a run if the coefficient correspond to the bin of a binarized run value.
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