Določitev roba urbanih naselij s pomočjo Delaunayjeve triangulacije

diplomska naloga

Dominik Papež (Author), Alma Zavodnik Lamovšek (Mentor), Dušan Kogoj (Thesis defence commission member), Božo Koler (Thesis defence commission member), Samo Drobne (Co-mentor)

Abstract

Keywords

geodezija;diplomska dela;VSŠ;Delaunayjeva triangulacija;urbano naselje;rob naselja;GIS;

Data

Language:	Slovenian
Year of publishing:	2010
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[D. Papež]
UDC:	004.6:659.2:711.4:91(043.2)
COBISS:	4924001
Views:	1836
Downloads:	536
Average score:	0 (0 votes)
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Other data

Secondary language:	English
Secondary title:	Definition of Boundaries of Urban Areas using Delaunay Triangulation
Secondary abstract:	UDC: 004.6:659.2:711.4:91(043.2) Author: Dominik Papeţ Supervisor: Assist. Prof. Alma Zavodnik Lamovšek, Ph. D. Co-supervisor: Sen. Lect. Samo Drobne, M. Sc. Title: Definition of Boundaries of Urban Areas using Delaunay Triangulation. Notes: 111 p., 5 tab., 87. fig. Key words: Delaunay triangulation, urban settlement, settlement boundary, GIS. Abstract This dissertation analyzes two different approaches, namely Delaunay triangulation and the buffer methodology, for the determination of the boundaries of urban settlements, and compares their advantages and shortcomings. We have developed a procedure for the determination of the boundaries of urban areas using Delaunay triangulation. The study was carried out on four suitable urban areas in Slovenia, namely Maribor, Jesenice, Postojna and Pivka. The study has taken into account some criteria for urban area boundary determination that had already been established, such as the maximal distance between buildings. In addition, it is introducing for the first time three-dimensional models that are using slanted distances between buildings. The computations and analyses were carried out using the computer program suite ArcGIS, on the basis of different renderings of spatial data, such as building registries and digital topography maps in the scale 1 : 25,000. We collected data in all four chosen urban areas using Delaunay triangulation; we have used the results obtained using the buffer method from the study by Prosen and coworkers (2008) titled “The importance of small and medium sized cities for the development of urban areas”. Finally we compared the two sets of results, obtained using the two different methods, and evaluated the advantages and shortcomings of each of the two approaches. We found the Delaunay approach better, as it takes into amount slanted distances and altitudes, removes small data clusters (with areas smaller than 30,000 m2 ), calculates the results in 3D and improves their 2D rendering.
Secondary keywords:	graduation thesis;geodesy;Delaunay triangulation;urban settlement;settlement boundary;GIS;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. Ljubljana, Fak. za gradbeništvo in geodezijo
Pages:	XXVI, 116 str.
Type (ePrints):	thesis
Title (ePrints):	Definition of Boundaries of Urban Areas using Delaunay Triangulation.
Keywords (ePrints):	Delaunayjeva triangulacija;urbano naselje;rob naselja;GIS.
Keywords (ePrints, secondary language):	Delaunay triangulation;urban settlement;settlement boundary;GIS.
Abstract (ePrints):	Diplomsko delo analizira dva različna pristopa (pristop Delaunayjeve triangulacije in bufer pristop) za določitev roba urbanih naselij ter ugotavlja njune prednosti in pomanjkljivosti. Izdelali smo postopek določitve roba urbanih naselij s pomočjo Delaunayjeve triangulacije. Študija se je izvajala na štirih primerih naselij v Sloveniji, na primeru Maribora, Jesenic, Postojne in Pivke. V študiji so upoštevana nekatera že uveljavljena merila za določanje roba urbanih naselij, kot je, na primer, maksimalna razdalja med objekti. Poleg tega na novo uvaja 3D modele z uporabo poševnih dolžin, s katerimi lahko bolj natančno izračunamo razdaljo med objekti. Analize so bile izvedene z orodjem ArcGIS, na podlagi različnih evidenc prostorskih podatkov, kot so kataster stavb in digitalni model reliefa v merilu 1 : 25.000. V vseh štirih izbranih naseljih smo pridobili rezultate s pomočjo Delaunayjeve triangulacije, rezultate bufer pristopa pa smo prevzeli iz že izvedene raziskave z naslovom Pomen majhnih in srednje velikih mest za razvoj urbanih območij (Prosen s sod., 2008). Na koncu smo izvedli še primerjavo med rezultati Delaunayjeve triangulacije in prevzetim bufer pristopom ter ocenili prednosti in slabosti obeh pristopov. Ugotovili smo, da je Delaunayjev pristop boljši, saj pri izdelavi rezultata upošteva poševne dolžine, nadmorske višine, izloči manjše podatkovne otoke (katerih površina je manjša od 30.000 m2 ), rezultat izdela v 3D in ga izboljša v 2D. VIII
Abstract (ePrints, secondary language):	UDC: 004.6:659.2:711.4:91(043.2) Author: Dominik Papeţ Supervisor: Assist. Prof. Alma Zavodnik Lamovšek, Ph. D. Co-supervisor: Sen. Lect. Samo Drobne, M. Sc. Title: Definition of Boundaries of Urban Areas using Delaunay Triangulation. Notes: 111 p., 5 tab., 87. fig. Key words: Delaunay triangulation, urban settlement, settlement boundary, GIS. Abstract This dissertation analyzes two different approaches, namely Delaunay triangulation and the buffer methodology, for the determination of the boundaries of urban settlements, and compares their advantages and shortcomings. We have developed a procedure for the determination of the boundaries of urban areas using Delaunay triangulation. The study was carried out on four suitable urban areas in Slovenia, namely Maribor, Jesenice, Postojna and Pivka. The study has taken into account some criteria for urban area boundary determination that had already been established, such as the maximal distance between buildings. In addition, it is introducing for the first time three-dimensional models that are using slanted distances between buildings. The computations and analyses were carried out using the computer program suite ArcGIS, on the basis of different renderings of spatial data, such as building registries and digital topography maps in the scale 1 : 25,000. We collected data in all four chosen urban areas using Delaunay triangulation; we have used the results obtained using the buffer method from the study by Prosen and coworkers (2008) titled “The importance of small and medium sized cities for the development of urban areas”. Finally we compared the two sets of results, obtained using the two different methods, and evaluated the advantages and shortcomings of each of the two approaches. We found the Delaunay approach better, as it takes into amount slanted distances and altitudes, removes small data clusters (with areas smaller than 30,000 m2 ), calculates the results in 3D and improves their 2D rendering.
Keywords (ePrints, secondary language):	Delaunay triangulation;urban settlement;settlement boundary;GIS.
ID:	8309028