Multi-view Video Anchor Picture Encoding Quality
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Solution Overview
Problem
Multi-view video coding (MVC) technologies face challenges in maintaining image quality and coding efficiency due to the application of the skip block mode to anchor pictures, which can lead to image quality deterioration and reduced prediction efficiency across the entire video sequence.
Innovation Solution
The method selectively applies the skip block mode to anchor pictures based on their type and other factors, such as input pictures, reference pictures, and quantization parameters, ensuring that anchor pictures are not encoded using the skip block mode, thereby preserving image quality and improving coding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the skip block mode is applied to anchor pictures, then coding efficiency is improved, but image quality deteriorates
Solution Approach 1:
The patent applies different encoding modes to different picture types: anchor pictures use standard encoding to maintain high image quality, while non-anchor pictures use skip block mode for improved coding efficiency. This local differentiation resolves the contradiction by allowing each picture type to be encoded with the most appropriate mode for its specific requirements.
Solution Approach 2:
The patent segments the video sequence into anchor pictures and non-anchor pictures, applying different encoding strategies to each segment. Anchor pictures are encoded with full detail using standard modes, while non-anchor pictures use the more efficient skip block mode, thereby achieving both high quality where needed and high efficiency where acceptable.
2Loss of substance
If the skip block mode is applied to anchor pictures, then compression ratio is improved, but prediction efficiency deteriorates
Solution Approach 1:
The patent performs preliminary encoding of anchor pictures using standard modes to establish high-quality reference frames before encoding subsequent non-anchor pictures. This preliminary action ensures that the reference pictures used for prediction have optimal quality, thereby maintaining prediction efficiency while still achieving compression through skip block mode in non-anchor pictures.
Data Source
AI summary
Provided are a method and apparatus for encoding and decoding multi-view video data. The method of encoding multi-view video data includes determining whether a current picture is an anchor picture; and encoding blocks of the current picture by selectively applying a skip block mode to the blocks if the current picture is the anchor picture. According to the present invention, image quality and coding efficiency may be improved.