Descending Temporal-ID Sublayer Signaling for Image Coding
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Solution Overview
Problem
The increasing demand for high-resolution and high-quality images leads to a significant increase in transmission and storage costs due to the rise in the amount of transmitted information or bits, necessitating high-efficient image compression technologies.
Innovation Solution
An image encoding/decoding method and apparatus that utilizes sublayer level information flags encoded/decoded in a descending order of temporal identifier values, performing signaling/parsing processes in the same loop to enhance encoding/decoding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If image resolution and quality are improved, then image quality is improved, but transmission cost and storage cost increase
Solution Approach 1:
The patent segments the image data into multiple sublayers with different temporal identifier values, allowing selective transmission and processing of sublayer information. This segmentation enables the system to maintain image quality while reducing the total amount of data transmitted by only sending necessary sublayer information.
Solution Approach 2:
The patent applies local quality by differentiating the treatment of different sublayers based on their temporal identifier values. Sublayers are processed and transmitted with different levels of detail depending on their importance, optimizing the balance between image quality and data volume for each specific region or component.
2Productivity
If sublayer level information is processed in ascending order of temporal identifier values, then processing simplicity is maintained, but encoding/decoding efficiency decreases
Solution Approach 1:
The patent inverts the conventional processing order by handling sublayer level information in descending order of temporal identifier values rather than ascending order. This inversion enables the signaling and parsing processes to be performed in the same loop, significantly improving encoding/decoding efficiency while maintaining manageable processing complexity through structured iteration.
3Productivity
If signaling and parsing processes are performed in separate loops, then process modularity is improved, but encoding/decoding efficiency decreases
Solution Approach 1:
The patent merges the signaling and parsing processes into a single unified loop, eliminating the need for separate processing stages. This integration allows both functions to be performed simultaneously during the same iteration, significantly improving encoding/decoding efficiency while the structured approach maintains sufficient modularity for implementation.
Data Source
AI summary
An image encoding/decoding method and apparatus is provided. The image decoding method comprises obtaining, from a bitstream, a first flag specifying whether sublayer level information is present for each of one or more sublayers in a current layer, and obtaining, from the bitstream, the sublayer level information based on the first flag. The first flag may be obtained in a descending order of temporal identifier values for the one or more sublayers.