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Digital twinning-oriented scene lightweight method

A lightweight, twinning technology, applied in image data processing, character and pattern recognition, design optimization/simulation, etc., can solve problems such as visual dynamic display efficiency

Active Publication Date: 2022-01-04
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows for efficient use of space on 3D models used during simulations or simulation runs by making them lighter than traditional methods like grid cells.

Problems solved by technology

This patents describes two technical problem addressed in this patented technology: improving the speed and precision with which digital twinned simulations take place over an object's lifetime while maintaining their shape integrity during processing.

Method used

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  • Digital twinning-oriented scene lightweight method
  • Digital twinning-oriented scene lightweight method
  • Digital twinning-oriented scene lightweight method

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Embodiment Construction

[0032] The technical solutions of the present invention will be further described below with reference to the accompanying drawings.

[0033] In order to achieve a simplified operation of the three-dimensional grid model, the conventional scheme includes: (1) using a side folding scheme, simultaneous use of a local secondary error metric matrix (QADRIC ERROR METRICS, QEM) to determine the space coordinates of the folding point, this algorithm already has Higher efficiency, quality, and versatility, but the algorithm will have cumulative errors in handling the large-scale mesh model, and further considerations in geometric detail characteristics; (2) introducing the concept of vertex curvature, and will correspond to the curvature The factor is added to the QEM, and the detail hold effect of the local feature is better, but only considers the vertex flavor and the adjacent surface area to calculate the curvature of the vertex, which can only be applied to a model with a uniform gri...

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Abstract

The invention relates to a digital twinning-oriented scene lightweight method, which comprises the steps of 1, inputting model data, calculating a quadratic error metric matrix considering constraints, calculating an optimal folding point and a corresponding folding cost, gradually taking out an edge with the minimum folding cost for folding, and generating a simplified three-dimensional network model; 2, calculating the surface discrete curvature of the vertex of the three-dimensional network model, finding out a point of which the curvature value is less than that of all adjacent points in a multi-direction gradient descent mode to serve as a local minimum value point, on the basis of the vertex with the minimum local curvature, carrying out region marking, flat region marking and region segmentation marking on neighborhood vertexes, and combining over-segmented regions by using region clustering; and 3, calculating Euclidean geometric distances among the planes after segmentation and combination, and generating a final lightweight model. According to the method, the full-working-condition self-adaptive three-dimensional grid model can be lightened for digital twinning operation scene optimization.

Description

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Claims

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Application Information

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Owner GUANGDONG UNIV OF TECH
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