3D Mesh Data Subgrouping for Selective Regional Transmission
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Solution Overview
Problem
Existing technologies face challenges in efficiently transmitting and receiving 3D mesh data due to the large amount of data points, high latency, and encoding/decoding complexity, making it difficult to provide high-quality 3D services such as virtual reality, augmented reality, and self-driving applications.
Innovation Solution
The method involves pre-processing input mesh data, dividing it into sub-groups, encoding each sub-group, and transmitting bitstreams with signaling information to enable partial access and efficient compression and reconstruction, allowing for flexible resource use in various network environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If mesh data is transmitted with a considerable number of points to maintain 3D content quality, then the quality of 3D services is improved, but the throughput requirement increases
Solution Approach 1:
The patent divides mesh data into multiple subgroups based on spatial regions, allowing selective transmission and processing of only the necessary portions of 3D content. This segmentation enables the system to maintain high 3D content quality by transmitting detailed mesh data for visible regions while reducing overall data volume through selective omission of non-visible or less important regions
Solution Approach 2:
The patent applies different levels of mesh detail to different spatial regions, transmitting high-resolution mesh data for regions of interest (such as foreground objects or areas currently being viewed) and lower-resolution data for background or less important regions. This local quality approach maintains 3D content quality where needed while reducing overall data transmission requirements
2Measurement precision
If mesh data is transmitted with a considerable number of points to maintain 3D content quality, then the quality of 3D services is improved, but the transmission time increases
Solution Approach 1:
By segmenting mesh data into subgroups that can be independently processed and transmitted, the system can prioritize and transmit critical regions first, reducing the effective transmission time for achieving acceptable 3D content quality while maintaining the option to transmit additional detail later
Solution Approach 2:
The patent implements partial access capability that allows the receiver to process and render only the necessary portions of transmitted mesh data (such as regions within the current field of view) without waiting for or processing the complete dataset, effectively reducing transmission time for the immediately useful content
3Measurement precision
If mesh data is transmitted with a considerable number of points to maintain 3D content quality, then the quality of 3D services is improved, but the encoding/decoding complexity increases
Solution Approach 1:
The patent divides mesh data into subgroups that can be independently encoded and decoded, reducing the computational complexity of processing the entire dataset at once. Each subgroup can be processed separately through simplified encoding/decoding operations while maintaining overall 3D content quality through the combination of all subgroups
Solution Approach 2:
The partial access capability allows the receiver to perform decoding operations only on the necessary subgroups (such as those corresponding to visible regions) without decoding the complete mesh dataset, thereby reducing encoding/decoding complexity while maintaining 3D content quality for the rendered view
4Productivity
If mesh data is divided into sub-groups for partial access, then the processing efficiency is improved, but the device complexity increases
Solution Approach 1:
The patent implements a subgroup division structure that organizes mesh data into manageable segments with associated metadata for identification and retrieval. This segmentation improves processing efficiency by enabling parallel processing of subgroups and selective access to specific regions, while the structured organization minimizes the overhead complexity through systematic indexing and referencing
Data Source
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AI summary
A 3D data transmission method, a 3D data transmission apparatus, a 3D data reception method, and a 3D data reception apparatus are disclosed. The 3D data reception method may comprise the steps of: determining a target sub-group on the basis of a target region selected by a user and signaling information; and extracting the bitstream of the target sub-group from a bitstream and performing decoding on the basis of the extracted bitstream of the target sub-group to reconstruct mesh data of the target sub-group.