Image Slice Signaling for Compression Efficiency
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Solution Overview
Problem
The increasing demand for high-resolution and high-quality images has led to a need for more efficient image compression techniques to reduce transmission and storage costs.
Innovation Solution
The method involves improving image coding efficiency by signaling partitioning information of a picture, deriving a partitioning structure including at least one slice, and decoding the picture based on this structure, using flags to determine the presence of subpicture information and the number of slices in the picture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If image data is transmitted using conventional wired/wireless broadband lines and stored using existing storage media, then high-resolution and high-quality images can be transmitted and stored, but transmission cost and storage cost increase
Solution Approach 1:
The picture is divided into slices, which are further divided into subpictures. This segmentation allows for efficient partitioning of image data, enabling selective transmission and processing of only necessary portions, thereby reducing overall transmission cost while maintaining high image quality
Solution Approach 2:
The patent introduces dynamic flag-based signaling mechanisms that allow flexible configuration of slice and subpicture structures. This dynamic adaptability enables optimization of transmission parameters based on actual content requirements, reducing transmission cost without compromising image quality
2Manufacturing precision
If image data is transmitted using conventional wired/wireless broadband lines and stored using existing storage media, then high-resolution and high-quality images can be transmitted and stored, but transmission cost and storage cost increase
Solution Approach 1:
By segmenting the picture into slices and subpictures with flag-based signaling, the patent enables efficient storage organization. This structure allows for compact representation of partitioning information, reducing storage requirements while preserving high image quality
Solution Approach 2:
The patent utilizes flag-based parameter signaling to efficiently encode partitioning information. By changing the representation parameters through flag-based indicators, the system achieves compact storage of slice and subpicture configurations, reducing storage cost without loss of image quality
3Productivity
If partitioning information is signaled using conventional methods, then picture partitioning can be achieved, but coding efficiency is reduced
Solution Approach 1:
The patent extracts essential partitioning information into flag-based indicators, separating the critical signaling functions from the detailed partitioning data. This extraction simplifies the signaling mechanism while maintaining coding efficiency by only transmitting necessary partitioning parameters
Solution Approach 2:
The flag-based signaling structure serves multiple functions simultaneously: it indicates the presence of subpictures, defines slice boundaries, and specifies partitioning configurations. This multi-functionality reduces the overall complexity of partitioning information signaling while improving coding efficiency
Data Source
AI summary
In an image decoding method performed by a decoding device according to the present disclosure, whether the number of slices included in the current picture is 1 is determined on the basis of a flag pertaining to whether or not sub-picture information is present, and a flag pertaining to whether a sub-picture includes a single slice.