Invention Grant
- Patent Title: Subblock-based motion vector predictor with MV offset derived by template matching
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Application No.: US17983866Application Date: 2022-11-09
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Publication No.: US12284331B2Publication Date: 2025-04-22
- Inventor: Xin Zhao , Lien-Fei Chen , Han Gao , 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: H04N19/105
- IPC: H04N19/105 ; H04N19/139 ; H04N19/176 ; H04N19/513

Abstract:
A coded video bitstream comprising a current block in a current picture is received. The current block includes a plurality of subblocks and is to be predicted by a subblock-based template matching motion vector prediction (SbTMVP) mode. A respective collocated reference subblock for each subblock is determined based on a combination of a displacement vector (DV) and a motion vector offset (MVO) that are associated with the respective subblock. A motion vector (MV) field in the respective collocated reference subblock of each subblock in the current block is determined. A respective reference template for each subblock is derived based on the determined MV field of the collocated reference subblock. The plurality of subblocks of the current block is reconstructed by predicting each subblock using the respective reference template in the SbTMVP mode.
Public/Granted literature
- US20230421751A1 SUBBLOCK-BASED MOTION VECTOR PREDICTOR WITH MV OFFSET DERIVED BY TEMPLATE MATCHING Public/Granted day:2023-12-28
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