Intra-Prediction Subblock Partitioning for Image Encoding
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Solution Overview
Problem
Existing image encoding and decoding methods require performance improvements, particularly in intra-prediction and subblock-wise partitioning to enhance encoding/decoding efficiency and 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 separately for each subblock. This segmentation allows the prediction to capture local variations within the block more effectively, improving prediction accuracy while managing complexity through systematic processing of smaller units
Solution Approach 2:
The patent implements adaptive subblock-wise intra-prediction where the prediction mode and partitioning strategy are dynamically selected based on the characteristics of the current block. This dynamic approach allows the system to apply subblock-wise prediction only when beneficial, balancing accuracy improvement with complexity control
2Productivity
If candidate group of partition types is configured, then encoding/decoding efficiency is improved, but device complexity increases
Solution Approach 1:
A candidate group of partition types is pre-configured and prepared in advance. During encoding/decoding, the system selects from this pre-prepared candidate group based on the current block characteristics, avoiding the need to generate and evaluate all possible partition types from scratch, thus improving efficiency while limiting complexity through the candidate group framework
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.