Invention Grant
- Patent Title: Sub-block based temporal motion vector predictor with an motion vector offset
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Application No.: US17984123Application Date: 2022-11-09
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Publication No.: US12238294B2Publication Date: 2025-02-25
- Inventor: Lien-Fei Chen , Xiang Li , Guichun Li , Shan Liu
- Applicant: Tencent America LLC
- Applicant Address: US CA Palo Alto
- Assignee: Tencent America LLC
- Current Assignee: Tencent America LLC
- Current Assignee Address: US CA Palo Alto
- Agency: ArentFox Schiff LLP
- Main IPC: H04N19/137
- IPC: H04N19/137 ; H04N19/105 ; H04N19/176 ; H04N19/70

Abstract:
Aspects of the disclosure provide a method and an apparatus including processing circuitry that determines, based on a syntax element in a coded video bitstream, that a current block including a plurality of subblocks is coded in a subblock-based temporal motion vector prediction (SbTMVP) mode. Motion vector offset (MVO) information indicating an MVO is received. The MVO indicates a motion offset of a displacement vector (DV) used to adjust a location of a collocated block in a collocated reference picture. An updated DV of the current block is determined based on the DV and the MVO. SbTMVP information of a respective subblock in the plurality of subblocks is derived based on motion information of a corresponding subblock in the collocated block indicated by the updated DV. The plurality of subblocks in the SbTMVP mode is reconstructed based on the SbTMVP information of the subblock in the plurality of subblocks.
Public/Granted literature
- US20230336737A1 SUB-BLOCK BASED TEMPORAL MOTION VECTOR PREDICTOR WITH AN MOTION VECTOR OFFSET Public/Granted day:2023-10-19
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