Adaptive Residual Coding Groups for Non-Dyadic Video Blocks
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Solution Overview
Problem
Existing video coding standards face inefficiencies in handling non-dyadic blocks, leading to suboptimal bandwidth utilization and compression performance.
Innovation Solution
A method for processing video data by determining the width and height of coding groups based on non-dyadic blocks, applying specific conversion rules to ensure that the coding group size is set to k×N, where k is a positive integer, and performing conversions to optimize bitstream processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If existing video coding standards are used to handle non-dyadic blocks, then the coding process is simplified, but bandwidth efficiency and compression performance deteriorate
Solution Approach 1:
The patent changes the parameter of coding group size from fixed dyadic values to variable sizes that adapt to the block dimensions. By allowing coding group width and height to be determined based on the actual block width W and height H (using formulas like w = W/2, h = H/2 for non-dyadic blocks), the coding process efficiently handles various block sizes while optimizing bandwidth usage and compression performance.
2Ease of manufacture
If existing video coding standards are used to handle non-dyadic blocks, then the coding process is simplified, but compression performance deteriorates
Solution Approach 1:
The patent modifies the coding group size parameters to match the actual block dimensions for non-dyadic blocks. By setting coding group width w and height h based on the block's W and H (e.g., w = W/2, h = H/2 when blocks are non-dyadic), the patent preserves more information during compression while maintaining coding simplicity through systematic parameter determination.
3Device complexity
If coding group size is fixed, then the conversion process is simpler, but adaptability to different block sizes deteriorates
Solution Approach 1:
The patent makes the coding group size dynamic rather than fixed. The coding group width w and height h are determined dynamically based on the block dimensions W and H using conditional logic: for dyadic blocks, standard sizes are used; for non-dyadic blocks, adaptive sizes (w = W/2, h = H/2) are applied. This dynamic adjustment enhances adaptability while keeping the conversion process manageable through clear decision rules.
Solution Approach 2:
The patent changes the coding group size parameters adaptively based on block characteristics. By determining w and h as functions of W and H (with different formulas for dyadic vs. non-dyadic blocks), the system achieves versatility across different block sizes while maintaining reasonable conversion complexity through systematic parameter selection.
Data Source
AI summary
A method for processing video data is disclosed. The method includes determining a width (w) and a height (h) of a coding group based on a width (W) and a height (H) of a block that is non-dyadic and contains residual, processing the residual of the block in unit of the coding group, and performing a conversion between a visual media data and a bitstream according to a rule based on the processing.