Analiza uporabnosti fotogrametrično določenega oblaka točk za izdelavo 3D modela objekta kulturne dediščine

diplomska naloga

Blaž Vidmar (Author), Mojca Kosmatin Fras (Mentor), Bojan Stopar (Thesis defence commission member), Božo Koler (Thesis defence commission member)

Abstract

V diplomski nalogi obravnavamo večslikovno ujemanje in njegovo primernost za izdelavo 3D modelov objektov kulturne dediščine. Osredotočimo se na dva konkretna primera iz območja današnje Grčije. Določimo metodologijo za zajem in obdelavo podatkov s programskim orodjem PhotoScan. Izdelane 3D modele opišemo z vizualnimi, geometričnimi in topološkimi značilnostmi. Osnovo za geometrično primerjavo predstavljajo oblaki točk laserskega skeniranja. Iz rezultatov primerjav razberemo, da je omenjen postopek primeren za vizualizacijo, osnovne meritve in izdelavo enostavnih načrtov. Postopek slikovnega ujemanja je v primerjavi z metodo laserskega skeniranja cenovno ugodnejši in hitrejši, hkrati pa pridobimo geometrijsko in vizualno primerljive rezultate. Zaradi zgladitev značilnih krivin postopek ni primeren za natančnejše opise obravnavane površine in za določevanje deformacij na objektih. Rezultati kažejo na smotrnost predhodne izvedbe kalibracije fotoaparatov.

Keywords

geodezija;diplomska naloga;UNI;lasersko skeniranje;večslikovno ujemanje;bližnjeslikovna fotogrametrija;računalniški vid;kulturna dediščina;arheologija;

Data

Language:	Slovenian
Year of publishing:	2014
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[B. Vidmar]
UDC:	528.715:727(4-13)(043.2)
COBISS:	6897761
Views:	2172
Downloads:	599
Average score:	0 (0 votes)
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Other data

Secondary language:	English
Secondary title:	Suitability analysis of a multi-image method for 3D model reconstruction in cultural heritage domain
Secondary abstract:	The graduation thesis evaluates the suitability of multi-image 3D reconstruction method and its applicability in the cultural heritage domain. Case study of two objects from the area of modern Greece is carried out. The optimal work ow for data acquisition and its processing in commercial software PhotoScan is determined. 3D meshes are described with visual, geometrical and topological characteristics. The data produced with laser scanning is the ground truth for geometrical evaluations. Data evaluation results show the suitability of multi-image 3D reconstruction method for visualisation, simple measurements and for production of simple plans. In comparison with laser scanning the proposed method is cheaper and faster while produces geometrically and visually comparable results. Misreconstructed curvatures are detected on produced 3D meshes which are therefore not suitable for precise surface modelling and for deformation analysis. The results suggest the use of precalibrated camera.
Secondary keywords:	graduation thesis;geodesy;laser scanning;multi-view stereo;close-range photogrammetry;computer vision;cultural heritage;archeology;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages:	XVIII, 54 str.
ID:	8708543