Improved motion vector refinement for geometric partitioning for motion prediction
Weighted blending based on a blending matrix for motion vectors in geometric partitioning mode (GPM) improves motion prediction accuracy and efficiency in video coding standards, addressing the need for enhanced motion vector refinement.
WO2026130264A1PCT designated stage Publication Date: 2026-06-25ALIBABA (CHINA) CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ALIBABA (CHINA) CO LTD
- Filing Date
- 2025-12-12
- Publication Date
- 2026-06-25
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Figure CN2025142282_25062026_PF_FP_ABST
Abstract
A VVC and later standard encoder and a VVC and later standard decoder are provided, configuring one or more processors of a computing system to perform motion vector refinement for geometric partitioning for motion prediction, and more specifically application of first-pass and second-pass Decoder-side Motion Vector Refinement ( "DMVR" ) in GPM motion prediction. The VVC and later standard encoder and decoder implement performing motion prediction upon two partitions of a geometric partitioning mode (GPM) -coded coding block, based on respective motion information of each partition, and applying weighted blending to respective motion predictions of each partition of the GPM-coded coding block based on a blending matrix, wherein the blending matrix depends on a split mode.
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