Base Layer Intra Mode for Enhancement Layer Prediction
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Solution Overview
Problem
Current video coding standards, such as HEVC, face challenges in efficiently utilizing intra prediction modes across different layers, leading to suboptimal compression efficiency and increased computational complexity in encoding and decoding processes.
Innovation Solution
The proposed solution involves using the base layer intra prediction mode as one of the most probable modes for enhancement layer intra mode prediction, allowing the enhancement layer to leverage the base layer's intra mode information for improved prediction, and implementing this method on computer systems with processors and memory to efficiently determine and use the enhancement layer intra mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional intra prediction mode selection is used for enhancement layer, then prediction accuracy is maintained, but compression efficiency is suboptimal and computational complexity increases
Solution Approach 1:
The base layer intra prediction mode is determined in advance and stored before processing the enhancement layer. This preliminary determination allows the enhancement layer to leverage the base layer's prediction mode information without requiring complex real-time analysis, thereby improving compression efficiency while controlling computational complexity.
Solution Approach 2:
The base layer intra prediction mode is copied and utilized for enhancement layer prediction. By copying the successful base layer prediction mode to the enhancement layer, the system achieves improved compression efficiency while avoiding the computational complexity of re-evaluating prediction modes from scratch.
2Productivity
If base layer intra mode is used for enhancement layer prediction, then compression efficiency improves, but prediction accuracy may be compromised
Solution Approach 1:
The base layer intra prediction mode is determined in advance as a preliminary action, establishing a foundation for enhancement layer prediction. This preliminary determination ensures that the prediction mode is selected based on the base layer's optimized characteristics, improving compression efficiency while maintaining prediction accuracy through proper sequencing of operations.
Data Source
AI summary
A multi-layer encoder/decoder system is provided that uses base layer intra mode for enhancement layer intra mode prediction. The encoder provides the base layer intra mode in the base layer of a two layer video encoder, and uses the base layer intra mode as one of a plurality of most probable modes (MPMs). Then in determining the enhancement layer intra mode, the MPMs are used.