Block Merging Candidate List Construction for Video Coding
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Solution Overview
Problem
Current video compression technologies face inefficiencies due to duplicate motion information and redundancy in merging candidate lists, which affect coding performance.
Innovation Solution
A method and apparatus for generating a block merging candidate list by adding spatial and temporal neighboring blocks, combined bi-directional candidates, and a zero motion candidate, while removing redundant candidates based on block split types and sizes to prevent redundant syntax generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If various block split structures (QTBT, MTT) are supported to improve coding flexibility, then the number of bits representing coding information greatly increases, but device complexity increases
Solution Approach 1:
The patent merges multiple block split structures (QTBT, MTT) into a unified block merge technology framework. By constructing a merging candidate list that incorporates various block types and split forms, the system achieves coding flexibility without requiring separate bit representations for each structure, thereby reducing the total number of bits needed.
Solution Approach 2:
The merging candidate list construction process creates a universal mechanism that handles multiple block split structures (quadtree, binary tree, triple tree) through a single standardized procedure. This multi-functional approach allows the same coding framework to accommodate diverse block configurations without increasing bit complexity.
2Productivity
If block merge technology is used to reduce the number of bits, then coding efficiency improves, but duplicate motion information and redundancy in merging candidate lists affect performance
Solution Approach 1:
The patent extracts and removes duplicate motion information and redundant candidates from the merging candidate list during the construction process. By selectively filtering out redundant entries while maintaining essential block merge capabilities, the system achieves coding efficiency without the performance degradation caused by redundant information.
3Device complexity
If a standardized merging candidate list construction process is used, then device complexity is reduced, but it may not adequately handle various block split types and sizes
Solution Approach 1:
The patent implements a dynamic merging candidate list construction process that adapts to various block split types and sizes. The standardized procedure incorporates conditional logic that automatically adjusts candidate selection based on the specific block configuration, enabling the system to handle diverse block structures without increasing overall process complexity.
Data Source
AI summary
The present invention relates to block merging according to block split among video coding techniques, and a method and an apparatus for coding and decoding a video, in which in generating and modifying a block merging list, spatial merging candidate blocks of the block merging list are changed according to a split type and order of a current coding unit.