MPEG-I Scene Description Update File for Random Access
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Solution Overview
Problem
Existing methods for randomly accessing scene descriptions in MPEG-I Scene Description lead to an increase in processing load on client devices due to the large amount of data and redundant information.
Innovation Solution
The proposed solution involves generating and storing initial value reference difference information or post-update information as random access points in an update file, allowing client devices to efficiently update spatial arrangement information for 3D objects without increasing processing load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If complete scene description data is transmitted for random access, then data completeness is improved, but processing load on client devices increases
Solution Approach 1:
The patent extracts only the essential difference information from complete scene descriptions, storing and transmitting only the changes (JSON patches) rather than the entire scene description data. This allows client devices to reconstruct complete scene descriptions by applying differences to a base version, reducing data transmission and processing load while maintaining data completeness.
Solution Approach 2:
The patent segments scene description data into a base scene description and incremental difference information (JSON patches). Each update is divided into discrete operations (add, remove, replace) that can be applied sequentially, allowing client devices to process only the necessary updates rather than handling complete scene descriptions repeatedly.
2Quantity of substance
If incremental updates are used to reduce data transmission, then data transmission efficiency is improved, but processing complexity increases
Solution Approach 1:
The patent changes the representation format of update data from complete scene descriptions to JSON patch operations. By transforming the data into a standardized format with specific operations (add, remove, replace) and paths, the system reduces data transmission volume while maintaining manageable processing complexity through standardized operation handling.
3Loss of time
If random access points are implemented for efficient scene description access, then access efficiency is improved, but memory requirements increase
Solution Approach 1:
The patent performs preliminary actions by pre-processing scene description updates into JSON patch format and storing them as discrete operations. This allows client devices to randomly access specific update points and apply only the necessary operations to reconstruct the desired scene description state, reducing both access time and memory requirements compared to storing complete scene descriptions at every timestamp.
Data Source
AI summary
The present disclosure relates to an information processing device and method capable of suppressing an increase in processing load when randomly accessing scene descriptions.As update information for updating spatial arrangement information for arranging at least one 3D object in a 3D space, initial value reference difference information that is difference information which uses an initial value of the spatial arrangement information as a reference, or post-update information in which an update to the initial value reference difference information is reflected in the initial value of the spatial arrangement information, is generated. Then, an update file which stores the update information is generated, and the initial value reference difference information or the post-update information is stored in the update file as a random access point. The present disclosure can be applied in, for example, an information processing device, an information processing method, or the like.