CIIP Deblocking Filter Adaptation for Video Coding Boundaries
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Solution Overview
Problem
Existing video coding technologies face challenges in achieving high compression ratios with minimal sacrifice in picture quality, particularly in scenarios with limited network resources and increasing video quality demands.
Innovation Solution
Implementing a coding method that determines whether a current coding unit is predicted by combined inter-intra prediction (CIIP) and adjusts boundary strengths based on specific conditions, including transform coefficients, motion vector differences, and coding tree units, to enhance deblocking filter adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If video data is compressed to reduce data size for transmission or storage, then the quantity of data is decreased, but picture quality deteriorates
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the boundary strength parameter in deblocking filters based on prediction mode identification. By changing the filtering strength parameter according to whether CIIP is used, the system optimizes the balance between compression efficiency and picture quality, reducing artifacts while maintaining data efficiency
Solution Approach 2:
The patent implements dynamics by making the deblocking filter adaptive rather than static. The filter strength is dynamically adjusted based on the prediction mode (CIIP detection) of each coding unit, allowing the system to optimize picture quality locally where needed while maintaining compression efficiency overall
2Manufacturing precision
If deblocking filter strength is increased to improve picture quality, then picture quality is improved, but compression efficiency deteriorates
Solution Approach 1:
The patent applies local quality by differentiating deblocking filter application based on local prediction modes. CIIP-coded units receive stronger filtering (boundary strength = 2) while other units receive standard filtering (boundary strength = 1), applying quality enhancement only where the specific prediction mode requires it, thus maintaining compression efficiency
Data Source
AI summary
The present disclosure provides a coding method, wherein the coding includes decoding or encoding, and the method comprises determining whether a current coding unit is predicted by application of combined inter-intra prediction (CIIP); and in response to determining that the current coding unit is predicted by application of CIIP, setting a boundary strength of a boundary of the current coding unit to a first value.