VR Mesh Data Processing via Outermost Points for Audio Rendering

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Solution Overview

Problem

Processing mesh data for audio rendering in complex virtual reality spaces is computationally intensive, especially when dealing with buildings of complex structures, making it difficult to intuitively utilize mesh data for reverberation and obstacle processing.

Innovation Solution

A method is provided to process mesh data by identifying and selecting eight key points based on minimum and maximum X, Y, and Z coordinates, simplifying the mesh data to reduce computational complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If mesh data for complex building structures is processed using traditional methods, then audio rendering accuracy is improved, but computational complexity increases significantly

Engineering Contradiction:
Improveaudio rendering accuracyVSAvoidcomputational complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the complex mesh data by identifying and extracting only the outermost points that form the boundary surface of the building structure. This segmentation approach divides the complex interior space calculation into a simpler boundary surface identification problem, reducing computational complexity while maintaining audio rendering accuracy for reverberation and obstacle processing

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent extracts the essential geometric information by taking out only the outermost points from the complete mesh data. This extraction process removes unnecessary interior points and simplifies the data structure to only the boundary surface, enabling efficient audio processing without sacrificing the accuracy needed for reverberation time (RT60) calculations and obstacle detection

Inventive Principle:
Principle #2Taking out (Extraction)

2Measurement precision

If complete mesh data is used for audio signal processing, then processing accuracy is improved, but processing time increases

Engineering Contradiction:
Improveprocessing accuracyVSAvoidprocessing time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent segments the mesh data processing task into two stages: first identifying outermost points to define the boundary surface, then using this simplified representation for audio signal processing. This segmentation eliminates the need to process complete interior mesh data, significantly reducing processing time while maintaining accuracy for determining listener position and applying reverberation effects

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent extracts only the boundary surface information (outermost points) from the complete mesh data, discarding redundant interior points. This extraction enables rapid audio processing for VR spaces while preserving the geometric accuracy needed for correct acoustic simulation, thereby reducing processing time without sacrificing processing accuracy

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS12408000B2Method of processing mesh data for processing audio signal for audio rendering in virtual reality space
Publication Date: 2025.09.02 ELECTRONICS & TELECOMM RES INST
  • US12408000B2 patent drawing
  • US12408000B2 patent drawing
  • US12408000B2 patent drawing

AI summary

Provided is a method of processing mesh data for processing an audio signal for audio rendering in a virtual reality (VR) space. The method includes receiving mesh data defining geometry of a certain space and the mesh data includes data regarding three-dimensional (3D) coordinates of points for configuring spatial information of the certain space and processing the mesh data by identifying outermost points among the points.