Video Slice Partitioning for Efficient High-Definition Decoding
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Solution Overview
Problem
The increasing demand for high-definition video services has led to a significant increase in data volume, necessitating improved video compression rates, with existing standards like HEVC showing limitations.
Innovation Solution
A method for partitioning video signals into tiles or slices, utilizing tile indices and difference information to enhance encoding and decoding efficiency, including techniques for parsing and encoding width and height information of slices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If video compression rate is improved to handle high-definition video services, then data volume is reduced, but compression performance shows limitations with existing standards like HEVC
Solution Approach 1:
The patent divides the picture into multiple tiles and slices, creating a hierarchical partitioning structure. This segmentation allows for more granular control of compression parameters across different regions, improving overall compression performance while handling high-definition video data volumes effectively
2Productivity
If picture is partitioned into multiple tiles and slices, then encoding/decoding efficiency is improved, but device complexity increases due to additional partitioning information processing
Solution Approach 1:
The patent performs picture partitioning into tiles and slices in advance during the encoding process, establishing a predefined structure that simplifies subsequent processing. The partitioning information is prepared and organized beforehand, reducing the computational burden during real-time encoding and decoding operations
Solution Approach 2:
The patent introduces a two-dimensional partitioning approach by dividing the picture both horizontally (into slices) and vertically (into tiles), creating a grid-like structure. This multi-dimensional partitioning enables more efficient processing by organizing data in a structured manner that facilitates parallel processing and reduces complexity in subsequent operations
3Manufacturing precision
If rectangular slice partitioning is applied with explicit width and height information, then partitioning precision is improved, but data overhead increases due to additional signaling requirements
Solution Approach 1:
The patent applies different partitioning precision levels to different regions of the picture. Rectangular slices with explicit width and height information are used where high precision is needed, while other regions may use coarser partitioning. This localized approach maintains necessary precision for specific areas while reducing overall data overhead across the entire picture
Data Source
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AI summary
A video decoding method according to the present disclosure may include partitioning a current picture into a plurality of tiles, decoding partitioning information representing a slice type, wherein the partitioning information represents whether a rectangular slice is applied and decoding first width information and first height information of a slice when the partitioning information represents that the rectangular slice is applied.