Intra Prediction for Non-Dyadic Blocks Using TIMD
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Solution Overview
Problem
Existing video coding technologies face inefficiencies in handling non-dyadic blocks during intra prediction, leading to suboptimal compression and increased bandwidth usage.
Innovation Solution
Implementing template-based intra mode derivation (TIMD) to differentiate between dyadic and non-dyadic blocks, adjusting intra prediction methods accordingly, and encoding syntax elements based on block characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If template-based intra mode derivation (TIMD) is applied to non-dyadic blocks, then compression efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies different intra prediction methods based on the block type (dyadic vs non-dyadic). TIMD is selectively applied only to non-dyadic blocks where it provides benefit, while standard intra prediction is used for dyadic blocks. This local differentiation optimizes compression efficiency for specific block types without unnecessarily increasing complexity across the entire processing system.
Solution Approach 2:
The patent segments the block processing into two distinct paths: one for dyadic blocks using standard intra prediction and another for non-dyadic blocks using TIMD. This segmentation allows the system to handle different block types with appropriate methods, improving overall efficiency while managing complexity through clear separation of processing paths.
2Device complexity
If TIMD is applied to all blocks uniformly, then processing simplicity is maintained, but compression performance deteriorates
Solution Approach 1:
The patent determines whether to apply TIMD based on specific characteristics of each block (whether it is dyadic or non-dyadic). This localized quality assessment ensures that TIMD is applied only where it provides compression benefits, avoiding unnecessary processing complexity in cases where standard intra prediction suffices.
Solution Approach 2:
The patent changes the processing parameter (intra prediction method) based on block characteristics. By detecting whether a block is dyadic or non-dyadic, the system dynamically selects the appropriate prediction method, optimizing compression performance while maintaining processing simplicity through data-driven parameter selection.
3Reliability
If syntax elements for TIMD are always included in bitstream, then decoding consistency is ensured, but bandwidth consumption increases
Solution Approach 1:
The patent applies partial action by including TIMD syntax elements only when necessary (for non-dyadic blocks). This selective inclusion ensures decoding consistency for blocks that require TIMD while avoiding unnecessary bandwidth consumption for blocks where standard prediction is used, achieving optimal balance between reliability and data quantity.
Solution Approach 2:
The patent makes the syntax element inclusion dynamic based on block type detection. The bitstream generation process adapts its output based on whether each block is dyadic or non-dyadic, ensuring consistent decoding information is provided only where needed while minimizing overall bitstream size through adaptive signaling.
Data Source
AI summary
A mechanism for processing video data implemented by a video coding apparatus is disclosed. The mechanism determines to apply template-based intra mode derivation (TIMD) to a block based on whether the block is dyadic or non-dyadic, where TMID is associated with intra prediction. A conversion between a visual media data and a bitstream is performed by applying intra prediction to the block based on TIMD.