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Redčenje točkovnih oblakov za zmanjšanje numerične zahtevnosti pri rekonstrukciji napetostnega stanja
ID Virnik, Žan Luka (Author), ID Starman, Bojan (Mentor) More about this mentor... This link opens in a new window, ID Halilovič, Miroslav (Comentor)

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Abstract
V nalogi je obravnavano redčenje točkovnega oblaka za potrebe numeričnih simulacij. Iz podatkov vhodne CSV datoteke, pridobljene z DIC metodo, je ustvarjena mreža čez redčene točke s tremi različnimi strategijami. Cilj je zmanjšanje števila točk ob ohranjanju geometrijske razporeditve vhodnega oblaka točk in zmanjševanje numerične zahtevnosti. Rezultati kažejo, da redčenje z generalno kvadratno mrežo dosega najučinkovitejše redčenje in mreženje, združevanje trikotnikov v štirikotnike pa je, z nadgradnjo algoritma, prav tako izkazovalo potencial.

Language:Slovenian
Keywords:geometrijsko mreženje, Delaunayeva triangulacija, 2D točkovni oblak, redčenje točk, simulacija, metoda končnih elementov (MKE), trikotniška mreža, štirikotniška mreža, numerična optimizacija, algoritem
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FS - Faculty of Mechanical Engineering
Year:2025
Number of pages:XII, 33 f.
PID:20.500.12556/RUL-171552 This link opens in a new window
UDC:514.757:620.172.21:519.876.5(043.2)
COBISS.SI-ID:247528451 This link opens in a new window
Publication date in RUL:28.08.2025
Views:576
Downloads:231
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Secondary language

Language:English
Title:Point cloud spatial downsampling for reduced computational complexity in stress reconstruction
Abstract:
This thesis addresses the thinning of a point cloud for the purpose of numerical simulations. From input CSV data, obtained using the DIC method, a mesh is generated over the reduced set of points using three different strategies. The aim is to reduce the number of points while preserving the geometric distribution of the original cloud and decreasing numerical complexity. The results show that uniform quadrilateral gridding achieves the most efficient thinning and meshing, while triangle-to-quadrilateral merging, with an enhanced algorithm, also showed potential.

Keywords:geometric meshing, Delaunay triangulation, 2D point cloud, point thinning, simulation, finite element method (FEM), triangular mesh, quadrilateral mesh, numerical optimization, algorithm

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