CIBCIP Video Unit Prediction for Coding Efficiency

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Solution Overview

Problem

Existing video coding technologies, such as MPEG-2, MPEG-4, ITU-T.263, ITU-T.264/MPEG-4 AVC, ITU-T.265 HEVC, and VVC, require further improvements in coding efficiency for digital video processing.

Innovation Solution

Implementing a combination of intra block copy (IBC) and intra prediction (CIBCIP) for video units to enhance coding efficiency by deriving predictions from combined IBC and intra predicted signals, and utilizing multiple reference lines for intra prediction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional video coding technologies (MPEG-2, MPEG-4, H.263, AVC, HEVC, VVC) are used, then video compression is achieved, but coding efficiency is insufficient and requires further improvement

Engineering Contradiction:

Improvecoding efficiencyVSAvoidcompression capability

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent combines intra block copy (IBC) and intra prediction techniques into a unified CIBCIP framework. This merging allows the system to leverage both IBC's ability to copy blocks from within the same picture and intra prediction's directional prediction capabilities, achieving superior coding efficiency compared to using either technique alone while maintaining compression effectiveness

Inventive Principle:

Principle #5Merging (Combining)

2Productivity

If combined intra block copy and intra prediction (CIBCIP) is applied to video units, then coding efficiency is improved, but processing complexity increases

Engineering Contradiction:

Improvecoding efficiencyVSAvoidprocessing complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the video processing into distinct units (video units, blocks, sub-blocks) and applies CIBCIP at appropriate segmentation levels. This allows the complex combined prediction to be managed through hierarchical decomposition, where simpler operations are applied at finer granularities and more sophisticated operations at coarser levels, reducing overall processing complexity

Inventive Principle:

Principle #1Segmentation

3Measurement precision

If multiple reference lines are combined for intra prediction, then prediction accuracy is improved, but computational requirements increase

Engineering Contradiction:

Improveprediction accuracyVSAvoidcomputational requirements

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent applies different prediction strategies to different regions of the video data. Multiple reference lines are combined and applied selectively based on local characteristics such as texture complexity, edge density, and block type. This allows high computational accuracy where needed (in complex regions) while using simpler prediction methods in homogeneous regions, reducing overall computational requirements

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250287017A1Method, apparatus, and medium for video processing

Publication Date: 2025.09.11 DOUYIN VISION CO LTD

AI summary

Embodiments of the disclosure provide a solution for video processing. A method for video processing is proposed. The method includes: applying, for a conversion between a video unit of a video and a bitstream of the video unit, a combination of intra block copy (IBC) and intra prediction (CIBCIP) to the video unit; deriving a prediction of the video unit by combining an IBC predicted signal and an intra predicted signal; and performing the conversion based on the prediction of the video unit.