Dual Tree Partitioning for Chroma Coding Blocks
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Solution Overview
Problem
Existing video encoding and decoding technologies face challenges in efficiently determining partitioning for chroma coding blocks, leading to increased signaling requirements and potential conflicts with other partitioning constraints, which can hinder coding efficiency and implementation simplicity.
Innovation Solution
The proposed solution involves determining a quadtree split for chroma coding blocks based on a limited range of minimum quadtree sizes, where the maximum value for the minimum quadtree size is set as a threshold, allowing for dual tree partitioning that minimizes signaling and avoids conflicts with other partitioning requirements, thereby simplifying coder implementation and improving coding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dual tree partitioning is used for chroma coding blocks, then coding efficiency is improved, but signaling requirements increase and conflicts with other partitioning constraints occur
Solution Approach 1:
The patent changes the parameter range of minimum quadtree size for chroma coding blocks by setting the maximum value equal to the threshold used for inferring quadtree split. This parameter adjustment enables dual tree partitioning to work efficiently while avoiding conflicts with other partitioning constraints and minimizing signaling requirements.
2Adaptability or versatility
If minimum quadtree size range is not limited, then partitioning flexibility is improved, but conflicts with other partitioning requirements occur
Solution Approach 1:
The patent resolves conflicts by setting the maximum value of the minimum quadtree size parameter equal to the threshold used for inferring quadtree split. This parameter constraint ensures that partitioning decisions are consistent and avoid conflicts with other partitioning requirements while maintaining necessary flexibility.
3Device complexity
If minimal signaling is used, then device complexity is reduced, but partitioning precision may be affected
Solution Approach 1:
The patent enables the decoder to self-determine partitioning by setting the maximum minimum quadtree size equal to the inference threshold. This allows the system to derive partitioning information without requiring additional explicit signaling, maintaining partitioning precision while minimizing device complexity and implementation overhead.
Data Source
AI summary
A video coder may be configured to determine a partitioning for a picture of video data using dual tree partitioning. The video coder may receive a picture of video data, determine a partitioning for the picture of video data using dual tree partitioning for luma blocks and chroma blocks based on a minimum quadtree size, wherein a maximum value for the minimum quadtree size is equal to a threshold used for inferring a quadtree split, and code the partitioned picture.