Video Decoding Context Bypass for Latency Reduction
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Solution Overview
Problem
Existing video coding standards face inefficiencies in decoding due to dependencies on spatial neighbor blocks, leading to latency and stalls in the decoding process, which affect video quality and performance.
Innovation Solution
The implementation of context decoding and reconstruction bypass methods, where the system uses already available context data from exterior or symbol-decoded neighbor blocks to decode current blocks, reducing dependency on fully reconstructed spatial neighbor blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional video decoding waits for full context reconstruction from spatial neighbor blocks, then decoding accuracy is improved, but decoding latency and processing time increase substantially
Solution Approach 1:
The patent performs preliminary decoding of the current block using available reference block data before the spatial neighbor blocks are fully reconstructed. This preliminary action allows decoding to proceed in parallel without waiting for neighbor block reconstruction, thereby reducing decoding latency while maintaining accuracy through subsequent refinement steps.
Solution Approach 2:
The patent segments the decoding process into multiple independent stages: (1) preliminary decoding using reference blocks, (2) context reconstruction from neighbor blocks, and (3) refinement/adjustment. This segmentation allows different parts of the decoding process to proceed independently and in parallel, eliminating the sequential dependency that causes latency.
2Manufacturing precision
If video coding uses expanded traditional approaches to improve compression quality, then video quality is improved, but coding efficiency and performance remain insufficient
Solution Approach 1:
The patent performs preliminary decoding of the current block using available reference block data before the spatial neighbor blocks are fully reconstructed. This preliminary action allows decoding to proceed in parallel without waiting for neighbor block reconstruction, thereby reducing decoding latency while maintaining accuracy through subsequent refinement steps.
Solution Approach 2:
The patent maintains continuous decoding operation by allowing the current block to be decoded using reference blocks while neighbor blocks are being reconstructed in parallel. This continuity eliminates stalls and keeps the decoding pipeline full, improving overall coding efficiency without sacrificing video quality.
3Reliability
If context decoding waits for spatial neighbor block reconstruction, then context accuracy is improved, but processing speed and frame rate decrease
Solution Approach 1:
The patent introduces reference blocks as intermediary data that can substitute for spatial neighbor blocks during the decoding of the current block. These reference blocks serve as a mediator that provides sufficient context information without requiring the actual neighbor blocks to be fully reconstructed first, thereby maintaining context accuracy while enabling parallel processing.
Solution Approach 2:
The patent performs preliminary decoding of the current block using available reference block data before the spatial neighbor blocks are fully reconstructed. This preliminary action allows decoding to proceed in parallel without waiting for neighbor block reconstruction, thereby reducing decoding latency while maintaining accuracy through subsequent refinement steps.
Data Source
AI summary
Techniques related to video coding with context decoding and reconstruction bypass.