Video Intra Prediction With Shape-Specific Parameters for Coding Efficiency
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Solution Overview
Problem
Existing video signal processing methods lack efficiency in coding and signaling, particularly in predicting current blocks using neighbor block prediction information.
Innovation Solution
A video signal processing method that generates a prediction sample for a current block based on an intra prediction mode, determines reference samples, and combines them with a parameter set specific to the block's shape to improve coding efficiency and signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single parameter set is used for all block shapes in prediction sample generation, then the device complexity is reduced, but the coding efficiency deteriorates
Solution Approach 1:
The patent applies local quality by using different parameter sets (first parameter set and second parameter set) for different block shapes (square/vertical vs. horizontal). This allows the prediction sample generation to be optimized locally for each block shape type, improving coding efficiency without requiring a single complex parameter set to handle all cases
Solution Approach 2:
The patent changes parameters (parameter sets) based on the block shape characteristics. By selecting different parameter sets according to whether the block is square/vertical or horizontal, the system adapts the prediction methodology to match the local characteristics of each block, thereby improving overall coding efficiency
2Manufacturing precision
If block-shaped prediction is used without shape-specific optimization, then the device complexity is reduced, but the manufacturing precision of prediction accuracy deteriorates
Solution Approach 1:
The patent makes different parts of the prediction process have different functions by applying shape-specific parameter sets. Square/vertical blocks use one parameter set while horizontal blocks use another, ensuring that each block type receives optimized prediction treatment matched to its geometric characteristics
Solution Approach 2:
The patent introduces dynamics by making the prediction process adaptive to block shape. The system dynamically selects appropriate parameter sets based on the current block's shape characteristics, allowing the prediction methodology to flexibly adjust to different block types rather than using a static approach
3Measurement precision
If neighbor block prediction information is used without shape consideration, then the signaling efficiency is reduced, but the prediction accuracy improves
Solution Approach 1:
The patent applies local quality by selecting different parameter sets based on the shape of the current block when using neighbor block prediction information. This shape-aware approach ensures that prediction accuracy is optimized for each block type while maintaining efficient signaling through targeted parameter selection
Data Source
AI summary
Disclosed is a video signal processing method and device for encoding or decoding a video signal. More specifically, disclosed are a video signal processing method and a video signal processing device for performing the method, the method comprising: obtaining reference line information indicating a reference line for intra prediction of a current block among a plurality of reference lines comprising neighboring samples of the current block; determining, on the basis of the reference line information, an intra prediction mode for the current block among a plurality of intra prediction modes constituting an intra prediction mode set; and decoding the current block on the basis of a plurality of reference samples on the reference line according to the reference line information and the determined intra prediction mode.