Video Coding Block Structure Derivation from Reference Blocks
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Solution Overview
Problem
High-resolution and high-quality video images require efficient compression techniques to reduce transmission and storage costs, as conventional methods result in increased data amounts.
Innovation Solution
A video coding method that derives a block structure for a current picture based on neighboring pictures, reducing the data needed for additional information and improving overall coding efficiency by dividing the picture into blocks using division structures from reference blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-resolution and high-quality video images are transmitted or stored using conventional methods, then image quality is maintained, but transmission cost and storage cost increase due to increased data amount
Solution Approach 1:
The current picture is divided into multiple target blocks, and each target block is further divided into sub-blocks based on the division structure of reference blocks from neighboring pictures. This segmentation allows for more efficient compression by processing smaller, manageable units with shared structural information, reducing the overall data amount while maintaining image quality
Solution Approach 2:
The division structure of reference blocks from neighboring pictures is copied and applied to the current picture's target blocks. By reusing the division structure information from neighboring pictures, the patent reduces the amount of new data that needs to be transmitted or stored, thereby reducing transmission and storage costs while maintaining high image quality
2Manufacturing precision
If division structure information is signaled for each picture, then block structure accuracy is improved, but data amount increases
Solution Approach 1:
The patent merges the division structure information from neighboring reference pictures with the current picture's target blocks. Instead of signaling complete division structure information for each picture, the system combines previously decoded division structures with current picture data, reducing redundant information transmission while maintaining block structure accuracy
Solution Approach 2:
The division structure of neighboring pictures is decoded and prepared in advance before processing the current picture. This preliminary action allows the system to reuse existing division structure information, reducing the amount of data that needs to be transmitted and processed for the current picture while maintaining accurate block structures
Data Source
AI summary
A video decoding method performed by a decoding device, according to the present invention, comprises the steps of: deriving at least one reference block for an object block; deriving a partitioned structure of the object block on the basis of a partitioned structure of the at least one reference block; partitioning the object block into a plurality of sub blocks on the basis of the derived partitioned structure; and generating recovered samples by decoding the plurality of sub blocks. According to the present invention, a partitioned structure of a current picture can be derived on the basis of a reference block of a neighboring picture, and thus the amount of data used in the additional information signaled for partitioning of the current picture can be reduced and overall coding efficiency can be improved.