- 专利标题: Subblock based motion vector predictor displacement vector reordering using template matching
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申请号: US17985127申请日: 2022-11-10
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公开(公告)号: US12063355B2公开(公告)日: 2024-08-13
- 发明人: Han Gao , Lien-Fei Chen , Guichun Li , Xin Zhao , Shan Liu
- 申请人: Tencent America LLC
- 申请人地址: US CA Palo Alto
- 专利权人: TENCENT AMERICA LLC
- 当前专利权人: TENCENT AMERICA LLC
- 当前专利权人地址: US CA Palo Alto
- 代理机构: ArentFox Schiff LLP
- 主分类号: H04N19/105
- IPC分类号: H04N19/105 ; H04N19/139 ; H04N19/159 ; H04N19/176 ; H04N19/513 ; H04N19/70
摘要:
Aspects of the disclosure provide a method and an apparatus for video encoding/decoding. The apparatus includes processing circuitry for: receiving prediction information of a current coding block in a current picture from a coded video bitstream, the prediction information indicating that the current coding block is coded using a subblock-based temporal motion vector prediction (SbTMVP) mode; deriving multiple displacement vector (DV) candidates by applying multiple DV offset candidates to a fixed DV predictor of the current coding block; comparing a template of the current coding block with each of multiple templates, each template of the multiple templates being located at a position specified by a corresponding one of the multiple DV candidates; calculating a cost value associated with each one of the multiple DV offset candidates based on the comparing; and reordering DV offset indices of the multiple DV offset candidates based on their calculated cost values.
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