Intra Prediction Mode Derivation From Reconstructed Blocks
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Solution Overview
Problem
Existing digital video compression standards face challenges in achieving better compression efficiency to reduce bandwidth and traffic pressure due to the increasing demand for high-quality video content.
Innovation Solution
An intra prediction method that determines an intra prediction mode for a current block based on a reconstructed block, using reconstructed samples to improve coding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing digital video compression standards are used, then video data can be compressed to facilitate transmission and storage, but compression efficiency is insufficient to reduce bandwidth and traffic pressure
Solution Approach 1:
The patent changes the parameter of intra prediction mode derivation by using reconstructed samples from encoded/decoded blocks instead of traditional reference pictures. This parameter change enables more accurate prediction mode selection, improving compression efficiency and reducing the bandwidth required for video transmission.
Solution Approach 2:
The patent implements a feedback mechanism where the intra prediction mode of a current block is derived based on the intra prediction mode of a reconstructed block. This feedback loop allows the system to learn from previously processed blocks and adapt prediction modes to maximize compression efficiency, thereby reducing bandwidth requirements.
2Productivity
If intra prediction mode is derived based on reconstructed samples, then coding efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by using the reconstructed block's own intra prediction mode to derive the current block's prediction mode. This self-referential approach eliminates the need for complex external reference mechanisms, improving coding efficiency while keeping the derivation logic relatively simple and self-contained.
Solution Approach 2:
The patent performs preliminary action by determining the intra prediction mode of the reconstructed block before processing the current block. This preliminary derivation of the reference block's prediction mode simplifies the overall process, as the current block can directly use the pre-determined mode without requiring complex real-time analysis, thus improving efficiency while managing complexity.
Data Source
AI summary
An intra prediction method, includes: when performing intra prediction on a current block, obtaining an intra prediction mode corresponding to a reconstructed block, and deriving an intra prediction mode of the current block based on the intra prediction mode corresponding to the reconstructed block, where the intra prediction mode corresponding to the reconstructed block is determined according to a reconstructed sample of the reconstructed block.