Multi-layer Video Reference Picture List Generation
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Solution Overview
Problem
Current video compression techniques face challenges in efficiently managing high-resolution and high-quality video data, leading to increased transmission and storage costs due to the large amount of data involved, particularly in supporting multi-layer video structures.
Innovation Solution
A method for generating and adapting a reference picture list that includes pictures from another layer based on specific characteristics, such as position information, temporal sub-layer indices, and view sequences, to optimize video decoding and prediction in a multi-layer video structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If video data is transmitted using existing wired and wireless broadband lines or stored in existing storage media, then transmission and storage costs increase, but video quality and resolution can be maintained
Solution Approach 1:
The video data is segmented into multiple layers including base layer and enhancement layers, allowing selective transmission and storage of critical information in the base layer while optional enhancement layers provide quality improvement without proportionally increasing storage costs
Solution Approach 2:
The patent changes the parameter of video representation by using multi-layer scaling relationships, where enhancement layers store differences rather than complete high-resolution data, reducing overall data quantity while maintaining quality options
2Manufacturing precision
If high-resolution and high-quality video data is used, then transmission and storage costs increase, but video quality is improved
Solution Approach 1:
Video quality is segmented into base quality (base layer) and enhanced quality (enhancement layers), allowing the system to provide high quality where needed while maintaining lower data requirements for basic functionality
Solution Approach 2:
The system dynamically adjusts video quality by selectively transmitting or storing only necessary layers based on available bandwidth, storage capacity, and client capabilities, optimizing the balance between quality and data amount
3Measurement precision
If reference pictures from another layer are included in the reference picture list, then prediction accuracy is improved, but processing complexity increases
Solution Approach 1:
The reference picture list is segmented into layer-specific reference pictures and inter-layer reference pictures, with clear rules for when each type should be used, simplifying the management complexity while maintaining prediction accuracy
Solution Approach 2:
Different parts of the reference picture list are assigned different qualities based on layer importance, with base layer references providing fundamental prediction accuracy and enhancement layer references providing localized quality improvements where most beneficial
Data Source
AI summary
An image decoding method supporting a plurality of layers according to the present invention may comprise the steps of: receiving location information on a location in which an inter-layer reference picture set for one or more reference layers, to which a current picture can refer, is added to a reference picture list; generating an initial reference picture list including the inter-layer reference picture set on the basis of the location information; and predicting the current picture on the basis of the initial reference picture list. Accordingly, the present invention provides a method for signaling location information on a location in which an inter-layer reference picture is added to a reference picture list, and an apparatus using the same.