Adaptive Deblocking Filter for Multi-View Video Coding
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Solution Overview
Problem
Existing video encoding technologies face challenges in effectively addressing visible blocking artifacts in multi-view video coding, particularly due to the lack of adaptable deblocking filter designs in multi-view video coding frameworks, which can increase implementation complexity and reduce coding efficiency.
Innovation Solution
A method and apparatus for adapting deblocking filtering based on prediction information, including prediction type and view information, to enhance the strength and selection of deblocking filters in video encoders and decoders for multi-view video sequences, thereby improving picture quality and coding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If deblocking filter is applied to suppress blocking artifacts, then picture quality is improved, but implementation complexity increases due to high adaptability requirements
Solution Approach 1:
The patent applies parameter changes by adapting the deblocking filter strength based on prediction information parameters (prediction type and view information). Different filter strengths are selected according to the prediction mode used, allowing the filter to be effective without requiring complex adaptive mechanisms for all possible conditions.
Solution Approach 2:
The patent implements local quality by applying different deblocking filter strengths to different regions or blocks based on their prediction information. Blocks using cross-view prediction receive different filter treatment compared to blocks using temporal prediction, optimizing picture quality locally without increasing overall system complexity.
2Productivity
If cross-view prediction is used to improve coding efficiency, then compression efficiency is improved, but blocking artifacts increase requiring stronger deblocking filtering
Solution Approach 1:
The patent converts the harmful blocking artifacts generated by cross-view prediction into a beneficial signal by using the prediction information itself as the basis for adapting the deblocking filter. The harm (blocking artifacts) is directly used to identify which blocks need stronger filtering, turning the problem into a solution criterion.
Solution Approach 2:
The patent implements feedback by using the prediction information (which indicates the prediction mode used for each block) to control the deblocking filter strength. The prediction information serves as feedback that guides the filtering process, allowing the system to automatically adjust filter strength based on the prediction mode without additional complexity.
Data Source
AI summary
There are provided a video encoder, a video decoder, and corresponding encoding and decoding methods for providing adaptation of deblocking filtering for multi-view video coding. The video encoder includes a deblocking filter adaptable based on prediction information for encoding multi-view video sequences.