Reference Picture List Configuration for Video Encoding

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Solution Overview

Problem

Existing image encoding/decoding technologies face challenges in efficiently configuring reference picture lists for target blocks, which affects the encoding/decoding process, especially in high-definition and ultra-high-definition image processing.

Innovation Solution

The method involves configuring a reference picture list for a target block of a target picture, which includes parsing slice headers to determine the reference picture list and performing marking procedures for reference pictures within the list.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If reference picture lists are configured for target blocks in HD/UHD images, then encoding/decoding efficiency is improved, but processing complexity increases

Engineering Contradiction:

Improveencoding/decoding efficiencyVSAvoidprocessing complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent divides the target picture into multiple slices and further into sub-pictures, with each slice and sub-picture having its own reference picture list configuration. This segmentation allows independent processing of different regions, improving encoding efficiency while managing complexity through localized reference picture management rather than global processing.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different reference picture list configurations to different slices and sub-pictures based on local characteristics. Each slice can have customized reference picture lists tailored to its specific content requirements, optimizing encoding quality locally while avoiding unnecessary complexity in regions with simpler characteristics.

Inventive Principle:

Principle #3Local quality

2Manufacturing precision

If multiple slices and sub-pictures are processed with individual reference picture lists, then encoding precision is improved, but processing time increases

Engineering Contradiction:

Improveencoding precisionVSAvoidprocessing time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent performs preliminary configuration of reference picture lists at the slice and sub-picture levels before actual encoding. By pre-organizing reference pictures and determining optimal configurations for each region beforehand, the encoding process can proceed more efficiently with reduced real-time processing requirements, balancing precision with time consumption.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250055977A1Method, device, and recording medium for encoding/decoding image using reference picture

Publication Date: 2025.02.13 ELECTRONICS & TELECOMM RES INST

AI summary

Disclosed herein are a method, apparatus, and storage medium for image encoding/decoding using a reference picture. A reference picture list is configured for encoding/decoding of a target block. Upon configuring the reference picture list, a sequence parameter set and a slice header are used. A picture is divided into sub-pictures and/or slices, and reference picture lists are configured for the sub-pictures and/or slices resulting from division. Reference picture lists for slices may be related to each other, and a current reference picture and a future reference picture in one reference picture list may be used in an additional reference picture list.