Method and apparatus for geometric partition mode with sub-block mode

By introducing geometric segmentation mode and local illumination compensation technology into the video coding system, segmentation is generated and inter-frame prediction is optimized, solving the problems of coding efficiency and video quality improvement in existing technologies, and achieving more efficient video coding and quality improvement.

CN122397252APending Publication Date: 2026-07-14MEDIATEK INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MEDIATEK INC
Filing Date
2024-09-10
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing video coding standards still have room for improvement in coding efficiency and accuracy when processing video signals with complex motion types, especially 3D video signals, and existing technologies are unable to effectively utilize loop filter information to improve video quality.

Method used

The segmentation is generated using Geometric Partitioning Mode (GPM) and Local Illumination Compensation (LIC). By combining a candidate list of sub-blocks and inherited LIC techniques, the inter-frame prediction and filtering processes in the video coding system are optimized.

Benefits of technology

It improves the coding efficiency and video quality of video encoding, especially when processing video signals with complex motion, thereby enhancing coding accuracy and quality.

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Abstract

A method and apparatus for video coding are disclosed. According to the method, a current block is partitioned into a first region and a second region along a partition line. For one of the first region and the second region, a target candidate list is derived, the target candidate list including one or more GPM (Geometry Partition Mode) sub-block candidates corresponding to one or more GPM sub-block modes. The one of the first region and the second region is encoded or decoded using the target candidate list including the one or more GPM sub-block candidates. According to another method, an inherited LIC (Local Illumination Compensation) flag is determined by inheriting a reference LIC flag associated with a reference block of the current block.
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