Image Decoding With MPT Block Splitting for Non-Square Coding Units
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Solution Overview
Problem
The increasing demand for high-resolution and high-quality images leads to higher transmission and storage costs due to the increased amount of information, necessitating a more efficient image compression technique.
Innovation Solution
The method and device utilize a Multiple Partitioning Tree (MPT) structure to split pictures into non-square blocks, enhancing prediction and transform efficiency by allowing diverse block shapes for improved coding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image data is transmitted using conventional wired/wireless broadband line or stored using existing storage medium, then high-resolution and high-quality images can be transmitted and stored, but transmission cost and storage cost increase
Solution Approach 1:
The image is divided into multiple blocks through quadtree and binary tree partitioning structures, allowing different compression strategies to be applied to different regions. This segmentation enables more efficient representation of image data by adapting to local characteristics, thereby reducing the total amount of data that needs to be transmitted or stored while maintaining high resolution and quality.
2Adaptability or versatility
If a picture is split to square blocks according to QT and BT structures, then coding can be performed on each block, but the blocks cannot be split to non-square blocks
Solution Approach 1:
The partitioning structure is made dynamic by allowing blocks to be recursively divided using both quadtree and binary tree methods. This enables the block shapes and sizes to adapt dynamically based on image content characteristics, transitioning from fixed square blocks to flexible non-square blocks as needed, thereby improving adaptability without excessive complexity increase.
Data Source
AI summary
An image decoding method performed by means of a decoding device according to the present invention comprises the steps of: obtaining first split information relating to a first target block; if the first split information indicates that the first target block is to be split, splitting the first target block into first sub-blocks; obtaining MPT split information relating to a second target block which is one of the first sub-blocks of the first target block; splitting the second target block into second sub-blocks on the basis of the MPT split information; and decoding the second sub-blocks, wherein the second sub-blocks are non-square blocks.