Applications of chained motion vector prediction for advanced motion vector prediction and subblock modes
By applying CMVP to affine merge and AMVP modes, the video coding standards achieve enhanced motion vector prediction and compensation, addressing limitations in existing technologies.
WO2026145827A1PCT designated stage Publication Date: 2026-07-09ALIBABA (CHINA) CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ALIBABA (CHINA) CO LTD
- Filing Date
- 2026-01-06
- Publication Date
- 2026-07-09
AI Technical Summary
Technical Problem
Existing video coding standards, such as VVC and later standards, do not effectively utilize chained motion vector prediction (CMVP) to enhance affine merge mode and affine Advanced Motion Vector Prediction (AMVP) mode, limiting the efficiency of motion compensation.
Method used
Implement chained motion vector prediction (CMVP) to derive new motion vector predictors by accumulating motion vectors from neighboring blocks and applying them in conjunction with affine merge and AMVP modes, including spatial and temporal motion vector predictions, to improve motion compensation.
Benefits of technology
Enhances motion vector prediction accuracy and efficiency by incorporating CMVP into affine merge and AMVP modes, leading to improved video coding performance.
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Smart Images
Figure CN2026070921_09072026_PF_FP_ABST
Abstract
Methods and systems implement application of chained motion vector prediction ( "CMVP" ). A VVC and later standard encoder and a VVC and later standard decoder, and / or an AVS3 and later-standard encoder and an AVS3 and later-standard decoder, can configure one or more processors of a computing system to apply CMVP in conjunction with Advanced Motion Vector Prediction ( "AMVP" ) mode while constructing spatially neighboring MVP candidates; apply CMVP in conjunction with Affine merge mode when inheriting Affine candidates; and apply CMVP in conjunction with subblock-based temporal motion vector prediction ( "SbTMVP" ) to obtain new motion shifts.
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