Chroma Block Sub-Partition Prediction for Video Coding Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing video coding technologies face challenges in improving coding efficiency and quality, particularly for chroma blocks with varying signal and texture distributions.
Innovation Solution
The proposed method involves partitioning chroma blocks into sub-partitions and using intra prediction schemes such as angular predicting, intra block copy, and template matching modes to enhance coding efficiency and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional video coding technologies are used for chroma blocks, then the coding process is simple, but coding efficiency and quality are insufficient
Solution Approach 1:
The chroma block is divided into multiple sub-partitions, allowing different prediction modes to be applied to different regions. This segmentation enables the encoder to capture local variations in signal and texture characteristics, improving coding efficiency without requiring a complete redesign of the coding framework
Solution Approach 2:
The patent introduces dynamic mode selection where the encoder chooses from multiple intra prediction schemes (angular, IBC, template matching, cross-component) based on the local characteristics of each sub-partition. This dynamic adaptation allows the coding process to respond to varying signal and texture distributions, achieving better compression efficiency
2Manufacturing precision
If conventional intra prediction schemes are used without sub-partitioning, then the coding process is fast, but coding quality is insufficient for blocks with varying signal and texture distributions
Solution Approach 1:
By partitioning the chroma block into sub-partitions, the patent enables more precise local prediction that adapts to signal and texture variations. This segmentation improves coding quality by capturing local characteristics that a single uniform prediction mode cannot represent
Solution Approach 2:
Different intra prediction schemes are applied to different sub-partitions based on their local characteristics. This local quality approach ensures that each region is predicted using the most appropriate method for its specific signal and texture properties, thereby improving overall coding quality
Data Source
AI summary
Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, for a conversion between a current video block of a video and a bitstream of the video, a prediction for the current video block based on a plurality of sub-partitions of the current video block and at least one intra prediction scheme, wherein the current video block is a chroma block, the plurality of sub-partitions are obtained by partitioning the current video block, and the at least one intra prediction scheme comprises at least one of the following: an angular predicting mode, an intra block copy (IBC) mode, a template matching mode, or a cross-component prediction mode; and performing the conversion based on the prediction for the current video block.