Picture Prediction Method Using Triangular Intra-Inter Modes
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Solution Overview
Problem
Conventional video encoding and decoding methods for high-definition videos suffer from low picture prediction efficiency, particularly in block-level coding processes.
Innovation Solution
A method and apparatus for picture prediction that involves combining intra and inter prediction modes, utilizing a triangular prediction unit mode, and performing motion compensation and intra prediction to enhance encoding and decoding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional block-level spatial and temporal prediction modes are used, then video encoding and decoding can be performed, but picture prediction efficiency remains low
Solution Approach 1:
The patent combines intra prediction (spatial) and inter prediction (temporal) modes into a unified prediction framework. The prediction unit can selectively apply intra prediction, inter prediction, or a combination of both, allowing the system to leverage the strengths of both approaches simultaneously. This merging resolves the contradiction by achieving higher prediction efficiency without requiring completely separate encoding/decoding paths for each mode.
Solution Approach 2:
The patent introduces dynamic selection mechanisms where the prediction mode (intra, inter, or combined) is adaptively chosen based on block characteristics, motion information, and prediction accuracy metrics. This dynamic approach allows the system to optimize prediction efficiency for each block individually while maintaining manageable overall complexity through standardized decision-making procedures.
2Quantity of substance
If high-definition video is transmitted over internet with limited bandwidth, then video transmission can occur, but data amount is quite large
Solution Approach 1:
The patent divides the video picture into multiple blocks and further into prediction units, allowing independent prediction and encoding of each unit. This segmentation enables more efficient compression by adapting prediction modes to local block characteristics, reducing the overall data amount required for high-definition video transmission while maintaining transmission quality through localized optimization.
Solution Approach 2:
The patent employs multiple prediction parameters including motion vectors, prediction modes, and reference picture indices that can be dynamically adjusted. By optimizing these parameters at the block level, the system achieves better compression ratios, reducing the video data amount transmitted over limited bandwidth while preserving visual quality through adaptive parameter selection.
Data Source
AI summary
A picture prediction method includes receiving a bitstream; parsing the bitstream to obtain a prediction mode of a current block; when the prediction mode of the current block is a combined intra and inter prediction mode, selecting an execution manner of a triangular prediction unit mode according to a preset policy; determining motion information of the current block according to the execution manner of the triangular prediction unit mode; performing a motion compensation process based on the motion information, to obtain an inter prediction sample; obtaining an intra prediction sample according to the prediction mode of the current block; and combining the inter prediction sample and the intra prediction sample to obtain a prediction picture of the current block.