3D Point Cloud Reproduction Timing Synchronization
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Solution Overview
Problem
The existing method for encoding point clouds does not provide clear timing information for sub-frames, leading to potential delays and frame loss during 3D data reproduction and display.
Innovation Solution
An information processing device and method that extracts samples including sub-frames from a bit stream based on display timing metadata, decodes these samples, and constructs point clouds in synchronization with the display timing, ensuring timely reproduction and display of 3D data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a combined frame encoding method is used without display timing metadata, then encoding efficiency is improved, but reproduction quality deteriorates due to delays and frame loss
Solution Approach 1:
The patent applies preliminary action by storing display timing information (presentation time) in metadata during the encoding phase. This allows the decoder to know in advance when each sub-frame should be decoded and displayed, preventing reproduction delays and frame loss while maintaining encoding efficiency through combined frame processing
2Speed
If sub-frames are decoded without timing information, then processing speed is improved, but synchronization accuracy deteriorates
Solution Approach 1:
The patent implements feedback by using presentation time metadata that provides timing information to the decoder. This feedback mechanism allows the decoding system to synchronize sub-frame processing with the original encoding timing, ensuring accurate reproduction without compromising processing speed
Data Source
AI summary
An information processing device and method are capable of preventing a reduction in quality of reproduction and display of 3D data. On the basis of first information on a display timing of a sub-frame stored as metadata in a file, a sample is extracted including the sub-frame from a bit stream stored in the file in time for the display timing of the sub-frame; the extracted sample is decoded; and a point cloud for the sub-frame is constructed on the basis of the first information in time for the display timing of the sub-frame included in the decoded sample.