Video Processing Intra Prediction Mode Derivation
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Solution Overview
Problem
Existing video coding technologies face challenges in improving coding efficiency, particularly in deriving optimal intra prediction modes for non-intra coded video units.
Innovation Solution
A method for video processing that determines whether a video unit is non-intra coded or intra coded, and accordingly derives one or more intra prediction modes (IPMs) for non-intra coded units, or obtains a prediction without applying IPMs for intra coded units, to enhance coding performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If intra prediction modes are derived for non-intra coded video units, then coding performance is improved, but processing complexity increases
Solution Approach 1:
The patent segments the video processing by distinguishing between intra-coded and non-intra-coded video units. Different processing paths are applied: for non-intra-coded units, intra prediction modes are derived and applied, while for intra-coded units, prediction is obtained without applying IPMs. This segmentation allows the system to apply complex processing only where beneficial, improving coding performance for non-intra units while avoiding unnecessary complexity for intra-coded units.
2Productivity
If different processing paths are applied to intra and non-intra coded units, then coding efficiency is improved, but control complexity increases
Solution Approach 1:
The patent implements dynamic processing by making the prediction mode application conditional on the coding type of each video unit. The system dynamically selects between two processing paths: applying IPMs for non-intra-coded units and obtaining prediction without IPMs for intra-coded units. This dynamic approach optimizes coding efficiency by adapting the processing method to the specific characteristics of each video unit type.
Data Source
AI summary
Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, for a conversion between a video unit of a video and a bitstream of the video unit, whether the video unit is non-intra coded or intra coded; in accordance with a determination that the video unit is non-intra coded, deriving one or more intra prediction modes (IPMs) for the video unit; in accordance with a determination that the video unit is intra coded, obtaining a prediction of the video unit without applying an IPM; and performing the conversion based on the one or more IPMs or the obtained prediction.