Simplified Matrix Weighted Intra Prediction for Video Coding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-definition video applications face challenges with high bandwidth and storage demands due to the large bitrates and data volumes of HD video streams, limiting their deployment in video monitoring and other applications.
Innovation Solution
Implement simplified matrix weighted intra prediction methods to unify prediction processes for blocks of varying sizes, reducing computational complexity and enhancing compression efficiency by removing extra leaving-out operations in the MIP prediction process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional MIP prediction process is used for blocks of varying sizes, then prediction accuracy is maintained, but computational complexity increases due to extra leaving-out operations
Solution Approach 1:
The patent changes the parameters of the prediction process by introducing a classification system based on block size (4x4 blocks vs. other sizes). This allows the system to adjust the prediction methodology according to the specific block dimensions, applying simplified operations for 4x4 blocks and standard MIP operations for other sizes, thereby reducing overall computational complexity while maintaining accuracy where needed
Solution Approach 2:
The patent segments the MIP prediction process into different pathways based on block size classification. By dividing the processing into distinct segments (4x4 blocks requiring leaving-out operations vs. other blocks using standard operations), the system optimizes computational resources for each segment, reducing unnecessary complexity in the overall process
2Productivity
If video compression is increased to reduce bandwidth and storage demands, then transmission efficiency improves, but video quality deteriorates
Solution Approach 1:
The patent changes the parameters of video compression by implementing size-specific prediction strategies. By adjusting the prediction methodology based on block dimensions, the system achieves better compression efficiency without uniformly degrading video quality across all block types, as each size category receives optimized processing
3Device complexity
If simplified prediction methods are applied to all block sizes, then computational complexity is reduced, but prediction accuracy deteriorates for certain block sizes
Solution Approach 1:
The patent applies local quality by implementing different prediction strategies tailored to specific block size categories. Instead of using a uniform simplified method for all blocks, the system applies leaving-out operations specifically to 4x4 blocks where they are most beneficial, while using standard MIP operations for other sizes, thereby maintaining local optimization and prediction accuracy for each block type
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
The present disclosure provides methods for performing simplified matrix weighted intra prediction. The method can include: determining a classification of a target block; and generating, based on the classification, a matrix-weighted intra prediction (MIP) signal, wherein determining the classification of the target block comprises: in response to the target block having a size of 4×4, determining that the target block belongs to a first class; or in response to the target block having a size of 8×8, 4×N or N×4, N being an integer between 8 and 64, determining that the target block belongs to a second class.