Reconstructed-Block Intra Prediction for Efficient Video Compression
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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, particularly with 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 various techniques such as matrix weighted intra prediction (MIP), template-based intra mode derivation (TIMD), decoder-side intra mode derivation (DIMD), intra block copy (IBC), and template matching (TM) to enhance 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 neighboring blocks to determine prediction modes for current blocks. This parameter change enables more accurate prediction and improves compression efficiency, thereby reducing the bandwidth and traffic pressure without sacrificing video quality.
2Productivity
If intra prediction mode is derived using reconstructed samples from neighboring blocks, then coding efficiency is improved, but device complexity increases
Solution Approach 1:
The patent performs preliminary action by pre-determining the intra prediction mode for neighboring blocks and storing the reconstructed samples in advance. This allows the current block to derive its prediction mode efficiently from the pre-computed information, improving coding efficiency while managing device complexity through systematic organization of prediction mode derivation.
Data Source
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AI summary
An intra prediction method and apparatus, a video encoding method and apparatus, a video decoding method and apparatus, and a system. When intra prediction is performed on a current block, an intra prediction mode corresponding to a reconstructed block is acquired, and intra prediction mode derivation of the current block is performed on the basis of the intra prediction mode corresponding to the reconstructed block, wherein the intra prediction mode corresponding to the reconstructed block is determined according to a reconstructed sample of the reconstructed block.