Intra-Prediction Partitioning for Subblock Image Encoding
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Solution Overview
Problem
Existing image encoding/decoding methods require performance improvements, particularly in intra-prediction and subblock-wise partitioning to enhance encoding/decoding efficiency and prediction accuracy.
Innovation Solution
A method and apparatus for image encoding/decoding that configures a candidate group of partition types for a current block, determines a partition type based on a candidate index, and performs intra-prediction in units of the current block, allowing for subblock-wise intra-prediction and adaptive coding order.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If subblock-wise intra-prediction is implemented, then prediction accuracy is improved, but device complexity increases
Solution Approach 1:
The current block is divided into multiple subblocks, and intra-prediction is performed independently for each subblock. This segmentation allows the prediction to capture local variations in different regions of the block, thereby improving prediction accuracy while managing complexity through modular processing.
Solution Approach 2:
Different partition types are applied to different subblocks based on their local characteristics. The candidate group of partition types allows each subblock to be processed with the most appropriate partitioning strategy for its specific content, improving overall prediction accuracy by adapting to local image features.
2Adaptability or versatility
If multiple partition types are configured in a candidate group, then adaptability is improved, but device complexity increases
Solution Approach 1:
The candidate group of partition types serves as a universal solution that can handle various block characteristics and content types. By pre-configuring multiple partition types in the candidate group, the system gains the ability to adapt to different scenarios without requiring complex runtime decision-making, thus improving adaptability while controlling complexity.
3Productivity
If subblock-wise coding order is adapted, then encoding efficiency is improved, but loss of time increases
Solution Approach 1:
The coding order of subblocks is predetermined and adapted based on the partition type selected from the candidate group. By establishing the coding order in advance as part of the partition type configuration, the system avoids complex runtime ordering decisions, improving encoding efficiency while minimizing additional time overhead through pre-planned processing sequences.
Data Source
AI summary
The objective of the present invention is to provide a method and an apparatus for intra-prediction. In addition, the objective of the present invention is to provide a method and an apparatus for intra-prediction on a subblock unit basis. Furthermore, the objective of the present invention is to provide a method and an apparatus for determining a division and an encoding order of subblock units.