Multiview Video Coding Reference Picture List Adaptation
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Solution Overview
Problem
Current multiview video coding standards lack the ability to efficiently use both field view components of a complementary field view component pair for inter-view prediction, limiting coding efficiency by only allowing one field view component with the same or opposite parity to be used as an inter-view prediction reference in a non-adaptive manner.
Innovation Solution
The method involves generating a reference picture list for a second view component that includes either a first field view component or a complementary field view component pair, allowing for the use of both field view components with different inter-view reference indices, enabling efficient inter-view prediction between field view components regardless of parity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If only one field view component (with the same or opposite parity) is used as inter-view prediction reference in a non-adaptive manner, then the reference picture list construction is simple, but coding efficiency is limited
Solution Approach 1:
The patent makes the reference picture list dynamic and adaptive by allowing different field view components (same parity or opposite parity) to be selected as inter-view prediction references based on actual coding conditions. The encoder can adaptively choose which field components to include in the reference picture list, transforming the previously static non-adaptive approach into a flexible dynamic system that optimizes coding efficiency.
Solution Approach 2:
The patent changes the parameter of reference picture selection by introducing a mechanism to select between same-parity and opposite-parity field view components. This parameter change allows the system to adaptively adjust which field components are used as references, thereby improving coding efficiency without requiring complex restructuring of the reference picture list construction process.
2Adaptability or versatility
If both field view components of a complementary pair are used as inter-view prediction references, then inter-view prediction flexibility is improved, but reference picture list construction complexity increases
Solution Approach 1:
The patent implements a dynamic reference picture list construction process that can adaptively include one or both field view components from a complementary pair based on coding conditions. This dynamic approach provides flexibility in inter-view prediction while managing complexity through adaptive selection rather than always including all possible references.
Solution Approach 2:
The patent applies partial action by selectively including only the necessary field view components in the reference picture list. Instead of always including both same-parity and opposite-parity fields, the system includes only those components that are actually needed for optimal prediction, thereby providing flexibility when needed while avoiding unnecessary complexity.
3Measurement precision
If complementary field view component pairs are used for inter-view prediction, then prediction accuracy is improved, but processing complexity increases
Solution Approach 1:
The patent changes the prediction parameters by allowing the selection of both same-parity and opposite-parity field view components as references. This parameter change enables more accurate inter-view prediction by providing more reference options, while the selective nature of the implementation keeps processing complexity manageable.
Solution Approach 2:
The patent uses field view components from one view as copies or references for predicting view components in another view. By copying and utilizing both same-parity and opposite-parity fields from the reference view, the system improves prediction accuracy while maintaining efficient processing through the copying mechanism rather than requiring complex reconstruction.
Data Source
AI summary
A method comprises encoding a first view component of a first view of a multiview bitstream; and encoding a second view component of a second view; wherein the encoding of the second view component enables generating of a reference picture list for the second view component to include at least one of the following: (a) a first field view component based on the first view component or (b) a first complementary field view component pair including the first view component.