Tesis sobre el tema "GIS 3D"
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Karlsson, Lars. "Förslag till 3D-strategi för Skövde kommun". Thesis, Karlstad University, Faculty of Social and Life Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-2149.
Texto completoAtt vilja lagra sina geografiska data i tre dimensioner har börjat bli allt vanligare bland de svenska kommunerna. Man vill utifrån dessa data skapa en 3D-modell över sina tätorter med realistiska byggnader och andra objekt. Detta ger ökade möjligheter inom planprocesser, bygglov, skuggstudier och andra kommunala ändamål för invånarna.Detta examensarbete hade till syfte att ta fram ett förslag till 3D-strategi för Skövde kommun. De har idag sina data lagrade i två dimensioner i en Oracle-databas och man har en del andra material som till exempel punktmoln från laserskanning som skulle kunna användas för att skapa en geografisk databas i tre dimensioner.Examensarbetet tar upp olika mjukvaror man kan använda för skapandet och användandet av 3D-modeller. Den tar även upp vilka standarder man kan använda för att lagra geografiska data i tre dimensioner och vilka databaser man kan använda för detta ändamål. Dessutom berörs hur man skulle kunna ajourföra data och hur långt några andra kommuner har kommit i deras arbete med en 3D-strategi.Som slutsats så ser man att det det är svårt att hitta information inom området. Men att det finns mycket information att hämta från andra kommuner som redan gjort en hel del arbete. Ett bra exempel är Göteborg som tagit fram en riktigt fin modell som man kan se som en förebild. Man kan också se att Oracle och CityGML är en bra lösning för lagring av data i 3D. Det finns också företag som tagit fram lösningar för skapandet av kompletta 3D-lösningar efter en automatisk process men att de kan behöva utvecklas mer för att användas i dessa ändamål.
Swedish municipalities increasingly want to store their spatial data in three dimensions. On the basis of these data they want to create a 3D model of their cities with realistic buildings and other items. This provides increased opportunities in planning, building applications, studies of shadows and other municipal purposes for the residents.The purpose of this degree project was to develop a proposal for a 3D strategy for Skövde municipality. For the moment they have their data stored in two dimensions in an Oracle database and they have a number of other materials such as point clouds from laser scanning that could be used to create a spatial database in three dimensions.The degree project points to various software that can be used for the creation and use of 3D models. It also shows standards that can be used for storing of spatial data in three dimensions and which databases can be used for this purpose. Furthermore the study deals with how the model can be updated and how far other municipalities have advanced in their work with 3D strategies.As a conclusion, we can notice that it is difficult to find information in this area. But there are a lot of information to require from other municipalities that already has done a lot of work. A great example is Göteborg who have created a really nice model that can be seen as a paragon. You can also see that Oracle and CityGML is a good solution for storage of data in 3D. There are also companies that have developed solutions for the creation of complete 3D solutions trough an automatic process but that they need to develop it more for making it able to use for this purposes.
Hilbring, Désirée. "3D-GIS Visualisierung in der Umweltinformatik". Karlsruhe : Univ.-Verl. Karlsruhe, 2005. http://deposit.d-nb.de/cgi-bin/dokserv?idn=977265838.
Texto completoStevens, Pieter. "Exitability measurements through indoor 3D GIS". Thesis, Högskolan i Gävle, Samhällsbyggnad, GIS, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-27994.
Texto completoGunnarson, Nicklas y Pontus Schelin. "3D-visualisering i markprojekteringsprocessen". Thesis, Karlstads universitet, Avdelningen för geografi och turism, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-15118.
Texto completoEkberg, Fredrik. "An approach for representing complex 3D objects in GIS applied to 3D properties". Thesis, University of Gävle, Department of Technology and Built Environment, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-139.
Texto completoThe main problem that is addressed in this thesis is how to represent complex three-dimensional objects in GIS in order to render a more realistic representation of the real world. The goal is to present an approach for representing complex 3D objects in GIS. This is achieved by using commercial GIS (ArcGIS), applied to 3D properties. In order to get a clear overview of the state-of-the-art of 3D GIS and the current 3D cadastral situation a literature study was carried out. Based on this overview it can be concluded that 3D GIS still is in its initial phase. Current 3D GIS developments are mainly in the area of visualisation and animation, and almost nothing in the area of spatial analysis and attribute handling. Furthermore, the literature study reveals that no complete solution has been introduced that solves the problems involved in 3D cadastral registration. In several countries (e.g. Sweden, Denmark, Norway, Netherlands, Israel, and Australia) 3D properties exists in a juridical framework, but technical issues such as how to represent, store, and visualize 3D properties has not yet been solved. Some countries (Sweden, Norway, and Australia) visualize the footprints of 3D property units in a base map. This approach partly solves some technical issues, but can only represent 3D objects in a 2.5D environment. Therefore, research in how to represent complex objects in GIS as ‘true’ 3D objects is of great need.
This thesis will emphasize MultiPatch as a geographic representation method to represent complex 3D objects in GIS. A case study will demonstrate that complex objects can be visualized and analysed in a commercial GIS, in this case ArcGIS. Most commercial GIS software available on the market applies a 2.5D approach to represent 3D objects. The 2.5D approach has limitations for representing complex objects. There is therefore a need of finding new approaches to represent complex objects within GIS. The result shows that MultiPatch is not an answer to all the problems within 3D GIS but a solution to some of the problems. It still requires a lot of research in the field of 3D GIS, especially in development of spatial analysis capabilities.
Det huvudsakliga problemet i denna uppsats är hur komplexa tre-dimensionella objekt kan representeras i GIS för att återge verkligheten mer realistiskt. Målet är att presentera ett tillvägagångssätt för att representera komplexa 3D-objekt i GIS. Detta har uppnåtts genom att använda ett kommersiellt GIS tillämpat på 3D-fastigheter. En litteraturstudie har genomförts för att erhålla en klar översikt över det senaste inom 3D-GIS och över den aktuella situationen inom 3D-fastigheter. Grundat på översikten kan slutsatsen dras att 3D-GIS bara är i sin begynnelsefas. Den aktuella utvecklingen inom 3D-GIS har huvudsakligen fokuserat på visualisering och animering och nästan ingenting inom rumsliga analysmetoder och hantering av attribut. Litteraturstudien visar också att ingen fullständig lösning för de problem som finns inom 3D-fastighetsregistrering har introducerats. I flera länder, t.ex. Sverige, Danmark, Norge, Nederländerna, Israel och Australien, existerar 3D-fastigheter idag i juridiska termer, men de tekniska problemen som t.ex. hur 3D-fastigheter ska representeras, lagras och visualiseras har inte ännu lösts. Vissa länder (Sverige, Norge och Australien) visualiserar idag en projektion av 3D-fastigheterna på en fastighetskarta. Den här metoden löser endast några av de tekniska problemen och kan endast representera 3D-objekt i en 2,5D-miljö. Därför är forskning inom hur komplexa objekt kan representeras i GIS som s.k. ”sann” 3D av betydelse.
Den här uppsatsen framhäver MultiPatch som en datatyp för att representera komplexa 3D-objekt i GIS. En fallstudie visar att komplexa objekt kan visualiseras och analyseras i ett kommersiellt GIS, i det här fallet ArcGIS. De flesta kommersiella GIS som är tillgängliga på marknaden använder 2,5D-metoden för att representera 3D-objekt. 2,5D-metoden har vissa begränsningar för att representera komplexa objekt och därför finns det ett behov att finna nya tillvägagångssätt för att representera komplexa objekt inom GIS. Resultaten kommer att visa att MultiPatch inte är någon fullständig lösning till alla problem inom 3D-GIS men en lösning på några av problemen. Det krävs fortfarande mycket forskning inom 3D-GIS, särskilt inom utveckling av rumsliga analysmetoder.
Aidantausta, Elin. "3D-byggnadsmodeller utifrån takkonstruktioner : Lagring, hantering och bearbetning". Thesis, Karlstads universitet, Avdelningen för geografi och turism, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-28152.
Texto completoHilbring, Désirée [Verfasser]. "3D-GIS Visualisierung in der Umweltinformatik / von Désirée Hilbring". Karlsruhe : Univ.-Verl. Karlsruhe, 2005. http://d-nb.info/977265838/34.
Texto completoBlomqvist, Daniel. "3D-visualizations for building interiors in a GIS perspective". Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-7626.
Texto completoKučera, Josef. "Modelování parametrů solární elektrárny v GIS". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-219948.
Texto completoKeršner, Oldřich. "Hluková mapa v GIS". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218150.
Texto completoCOSTAMAGNA, ERIK. "GIS 3D: studio e applicazione alla documentazione dei beni culturali". Doctoral thesis, Politecnico di Torino, 2012. http://hdl.handle.net/11583/2501445.
Texto completoPark, Sang Jun. "CCTV Evaluation in Cincinnati within GIS Environment for Crime Prevention". University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1381489881.
Texto completoSandin, Daniel y Ahmed Farah. "3D-Detaljplaner : En kartläggning kring 3D-detaljplaner utifrån ett företags-, kommuns- samt civilt perspektiv". Thesis, Högskolan i Halmstad, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-41234.
Texto completoThe zoning plan is considered difficult to interpret and there is a great need to digitize it. Previous studies highlight that BIM and GIS can be applied in the zoning plan, this means that the zoning plan can provide new functions and improve visualization. An implementation can create opportunities for several improvements, such as the zoning plan process, building permit management and communication between actors can be improved. The purpose of this study is to map out what problems the relevant users have with today's zoning plan. Also, how a 3D-zoning plan should be applied, and what it can contain further for information and new functions. The study is conducted with a qualitative method. By studying literary studies, what possibilities a 3D-zoning plan can offer is examined. In the study, semi-structured interviews are conducted with municipalities, construction companies, architects and private individuals to understand what needs to be developed, and how it should be conducted. Analyzing and discussing results in what opportunities a 3D-zoning plan has for an implementation and what it takes to make it a reality. An overall conclusion is that a 3D-zoning plan is difficult to implement today. During the study several factors contributing to this conclusion. Common standards between companies, municipalities and architects must be determined. The authors' conclusion is that the zoning plan should not be visualized, instead a new visualization system should be created to support the zoning plan.
Halajová, Andrea. "Analýza únikových tras v 3D modelu budovy". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-390171.
Texto completoAndersson, Martin y Markus Meriä. "Ruttoptimering i en georefererad mikrospatial miljö : ett GIS visualiserat i 3D". Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-9586.
Texto completoCity models in 3D are a growing factor in GIS and it has been demonstrated that rescue times will be reduced for emergency services with the use of 3D GIS. The work presented in this thesis deals with network analysis in 2D and 3D and has been carried out on behalf of Gävle municipality. The task has been carried out with two main objectives. The first objective was to compare processing times for Dijkstra's search algorithm for networks (one smaller network based on the house of administration (förvaltningshuset) in Gävle and one overdimensioned network) in 3D and the corresponding ones in 2D in order to determine the difference. The second objective was to develop an application which allows 3D guidance for visitors from the reception to the required personnel; the resulting route is then obtained and visualized in a 3D model. The work has mainly been conducted with ESRI ArcGIS Desktop 10 and ArcGIS Engine Developer Kit 10. The programming has been carried out with C# in Visual Studio 2010. The application works by dynamically retrieving employee information from a table by using SQL-queries and individual routes are generated for each search. The analysis results for the process times show that there are no significant differences between the 2D and 3D networks. The conclusion to be drawn is that the process time is not a reason to opt out of a 3D environment for network analysis. In the future there is great potential for network analysis in 3D, especially in conjunction with 2D networks.
Mazzaglia, Antonino. "Ricostruzioni digitali e GIS 3D applicati all archeologia: il modello 3D della Necropoli di Porta Nocera (Pompei)". Doctoral thesis, Università di Catania, 2018. http://hdl.handle.net/10761/4161.
Texto completoKačmařík, Ivo. "Mapování elektromagnetických polí v GIS". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218664.
Texto completod'ALTILIA, LUCA. "Analisi spaziali in ambiente gis open source per lo studio di contesti archeologici della Daunia medievale". Doctoral thesis, Università di Foggia, 2016. http://hdl.handle.net/11369/363017.
Texto completoLin, Wei-Ming. "Constructing a GIS-based 3D urban model using LiDAR and aerial photographs". Texas A&M University, 2004. http://hdl.handle.net/1969.1/1495.
Texto completoEllul, Claire. "Functionality and performance : two important considerations when implementing topology in 3D GIS". Thesis, University College London (University of London), 2007. http://discovery.ucl.ac.uk/1354843/.
Texto completoWolff, Markus. "Geovisual methods and techniques for the development of three-dimensional tactical intelligence assessments". Phd thesis, Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2011/5044/.
Texto completoDiese Arbeit präsentiert Methoden, Techniken und Werkzeuge für die Entwicklung dreidi-mensionaler Lagebilder. Zu diesem Zweck werden Verfahren der Geoinformatik mit solchen der raumbezogenen Straftatenanalyse kombiniert. Das Spektrum der angewandten Methoden und Techniken umfasst raumzeitliche GIS-Analysen ebenso wie 3D Geovisualisierungen und GIS-Anwendungsprogrammierung. Um komplexe geovisuelle Analysen auf Basis virtueller 3D-Stadtmodelle zu ermöglichen, werden Datenbanken digitaler Stadtmodelle um anwendungsspezifische Fachinformationen ergänzt. Dies ermöglicht weiterführende Analysen, zum Beispiel zur räumlichen Verteilung urbaner Risiken. Weiterhin präsentiert die Arbeit Methoden und Verfahren zur Integration der Ergebnisse komplexer raumzeitlicher Straftatenanalysen in dreidimensionale Lagebilder. Die durchgeführten Analysen umfassen die Identifikation von Brennpunkten spezifischer Delikte mittels Techniken der Kerndichteschätzung, die Verifikation dieser Hotspots durch LISA-Statistiken, GIS-basierte räumliche Charakterisierungen von Brennpunkten sowie Analysen zur wiederholten Viktimisierung. Zur Visualisierung der Ergebnisse komplexer raumzeitlicher Analysen werden dreidimensionale geovirtuelle Umgebungen erzeugt. Um weitere raumbezogene Daten ergänzt, werden sämtliche Analyseergebnisse in diese Umgebungen integriert. Die resultierenden 3D-Visualisierungen erlauben eine effiziente Kommunikation der Ergebnisse komplexer raumbezogener Straftatenanalysen.
Tavakoli, Saman. "Construction of a solid 3D model of geology in Sardinia using GIS methods". Thesis, University of Gävle, Department of Technology and Built Environment, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-3773.
Texto completoAbstract
3D visualization of geological structures is a very efficient way to create a good understanding of geological features. It is not only an illustrative way for common people, but also a comprehensive method to interpret results of the work. Geologists, geophysics engineers and GIS experts sometimes need to visualize an area to accomplish their researches. It can show how sample data are distributed over the area and therefore they can be applied as suitable approach to validate the result. Among different 3D modeling methods, some are expensive or complicated. Therefore, such a methodology enabling easy and cheap creation of a 3D construction is highly demanded.
However, several obstacles have been faced during the process of constructing a 3D model of geology. The main debate over suitable interpolation methods is the fact that 3D modelers may face discrepancies leading to different results even when they are working with the same set of data. Furthermore, most often part of data can be source of errors, themselves. Hence, it is extremely important to decide whether to omit those data or adopt another strategy. However, even after considering all these points, still the work may not be accurate enough to be used for scientific researches if the interpretation of work is not done precisely. This research sought to explain an approach for 3D modeling of Sedini platform in Sardinia, Italy. GIS was used as a flexible software together with Surfer and Voxler. Data manipulation, geodatabase creation and interpolation test all have been done with aid of GIS. A variety of interpolation methods available in Surfer were used to opt suitable method together with Arc view.
A solid 3D model is created in Voxler environment. In Voxler, in contrary to many other 3D types of software there are four components needed to construct 3D. C value as 4th component except for XYZ coordinates was used to differentiate special features in platform and do gridding based on chosen value. With the aid of C value, one can mark layer of interest to identify it from other layers.
The final result shows a 3D solid model of the Sedini platform including both surfaces and subsurfaces. An Isosurface with its unique value (Isovalue) can mark layer of interest and make it easy to interpret the results. However, the errors in some parts of model are also noticeable. Since data acquisition was done for studying geology and mineralogy characteristics of the area, there is less number of data points collected per volume according to the main goals of the initial project. Moreover, in some parts of geological border lines, the density of sample points is not high enough to estimate accurate location of lines.
The study result can be applicable in a broad range of geological studies. Resource evaluation, geomorphology, structural geology and GIS are only a few examples of its application. The results of the study can be compared to the results of similar works where different softwares have been used so as to comprehend pros and cons of each as well as appropriate application of each software for a special task.
Keywords: GIS, Image Interpretation, Geodatabase, Geology, Interpolation, 3D Modeling
Du, Toit Armand Ludwig. "Creating a seamless geodatabase for water infrastructure on the Potchefstroom Campus / Armand Ludwig du Toit". Thesis, North-West University, 2011. http://hdl.handle.net/10394/9510.
Texto completoThesis (M.Sc. (Geography and Environmental Studies))--North-West University, Potchefstroom Campus, 2012
Bengtsson, Jonas y Mikael Grönkvist. "Performing Geographic Information System Analyses on Building Information Management Models". Thesis, KTH, Geodesi och satellitpositionering, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-208922.
Texto completoI takt med den ökade användningen av både BIM och 3D-GIS inom samhällsbyggnadsprocessen har även intresset för att sammanföra de två verktygen blivit större. En möjlighet med integration är potentialen att visualisera BIM-modeller tillsammans med andra geografiska data i 3D. En annan är att kunna genomföra rumsliga 3D-analyser på modellerna. Båda dessa går att utföra med hjälp av GIS-programvara. Denna studie utforskar hur en integration mellan BIM och GIS kan se ut. Målet är att genomföra typiska GIS-analyser i 3D på BIM-modeller. Tidigare forskning pekar mot vissa framgångar inom området genom att arbeta med det utpekade standardformatet för respektive verktyg – IFC för BIM och CityGML för GIS. Transformation mellan formaten skedde med hjälp av programvarorna Revit, FME och ArcGIS. Ett par framhållna tillämpningar av GIS-analyser valdes ut för tester på de konverterade modellerna – nätverksanalyser inomhus, siktanalyser och rumsliga analyser för 3D-byggnader. Som indata användes flera olika BIM-modeller, både sådana som tillverkats för faktisk användning och modeller som skapats för att användas som exempeldata inom programvarorna. Utifrån resultaten från det praktiska arbetet kan konstateras att en enkel, automatiserad och fullskalig integration mellan verktygen verkar ligga en bit in i framtiden. De flesta transformationerna mellan IFC och CityGML misslyckades i någon aspekt, speciellt de mer detaljerade och komplexa. I vissa testfall kunde filen inte importeras i ArcGIS, i andra saknas eller existerar oväntade geometrier även om importen lyckats. Det finns också exempel där geometrier förflyttats. Som en konsekvens av dessa problem kunde de flesta 3D-analyser inte genomföras alls eller lyckades inte ge betydelsefulla resultat. Ett fåtal av de ursprungliga analyserna gav dock positiv utdelning. Att kombinera (felaktiga) CityGML-modeller med annan rumslig data fungerade förhållandevis väl ur ett visualiseringssyfte. Både skuggvolymsanalysen och framtagandet av siktlinjer från byggnaderna gav någorlunda korrekta resultat vilket indikerar att det kan finnas en framtid gällande de tillämpningarna. Hindren för en fullskalig integration som identifierades genom arbetet delades upp i fyra olika kategorier. Den första är BIM-användning där hög kvalitet på de skapade modellerna är viktigt för korrekta slutresultat. Den andra är detaljeringsgraden där avsaknaden av gemensamma definitioner för detaljeringsgraderna ställer till problem. Den tredje kategorin är koordinat- och referenssystem där en lösning på kopplingen mellan lokala och globala system redan kan finnas på plats i en av de senare utgåvorna av IFC-formatet. Den sista och största kategorin är problematiken kring just format och programvaror där mer arbete på översättningen mellan IFC och CityGML kommer att krävas. I framtiden finns det gott om arbete att göra med dessa olika problem. Det finns också potential att utveckla egna verktyg för integrationen eller att ägna sig åt att göra andra analyser än de som valdes ut i den här studien.
Björk, Emma. "3D, klimatet och kommunen : Användningen av visualisering i klimatanpassningsarbetet". Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-44454.
Texto completoEuropeiska kommissionen fastslår att även med lyckade åtgärder för att stoppa utsläppen av växthusgaser kommer klimatförändringarna att öka under lång tid. Sveriges arbete har utretts i en klimat- och sårbarhetsutredning, men arbetet med åtgärderna går långsamt. En del av ansvaret för klimatanpassningen ligger på kommunalnivå i och med kommunernas planmonopol och självstyre. Ett sätt att presentera och kommunicera klimatförändringarna är via bilder. Denna uppsats undersöker om eller hur 3D påverkar kommunikation och förståelse för klimatanpassning på kommunalnivå. Och hur 3Dmodeller kan fungera som ett stöd och underlag för klimatanpassning. Uppsatsen är en kvalitativ fallstudie som genomförts genom intervjuer med Botkyrka kommun, Göteborgs stad, Länsstyrelsen i Stockholm, Statens Geotekniska Institut och The Interactive Institute. Informanterna har fått ge sin bild av användningen av 3D och klimatanpassning med fokus på kommunalverksamhet. Det materialet analyserades sedan i en innehållsanalys. Det framkom funderingar på om 3D är en generationsfråga där allmänheten i framtiden kommer kräva visualisering i 3D för att kunna förstå vad det är som visas. Det lyftes också farhågor om att 3D kan bli för verkligt och att den tolkning som behövs för att förstå vad datat betyder uteblir. Det är inte om kartorna är 2D eller 3D som gör att klimatanpassningen går långsamt bland Sveriges kommuner, men bilder av något slag tros underlätta förståelse. Kommunerna som jobbat med 3D ser ändrade arbetssätt där datat följer med i processen tydligare än tidigare vilket kan vara en fördel och ge bättre riskförståelse. Dialog med allmänheten tros också förbättras genom verktygen som kommer med 3D-modellerna om 3D dessutom kan ge en snabbare kontaktväg mellan kommun och allmänhet kan det vara en fördel.
Kwong, Kim-hung. "An evaluation of 3D-GIS as a public engagement tool in environmental impact assessment". Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36860827.
Texto completoEl-Mekawy, Mohamed. "Integrating BIM and GIS for 3D City Modelling : The Case of IFC and CityGML". Licentiate thesis, KTH, Geoinformatik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-28899.
Texto completoQC 20110127
Kwong, Kim-hung y 鄺劍雄. "An evaluation of 3D-GIS as a public engagement tool in environmental impact assessment". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B36860827.
Texto completoJamil, Abdlhamed. "Fernerkundung und GIS zur Erfassung, Modellierung und Visualisierung orientalischer Stadtstrukturen : das Beispiel Sanaa (Jemen)". Phd thesis, Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2011/5020/.
Texto completoThis study aims at the development and implementation of a generic procedure for the acquisition, processing, analysis and cartographic visualisation of urban space in arid zone cities based on operational remote sensing imagery. As a proof of concept the Yemeni capital Sanaa has been selected as a use case. The workflow developed is based on standard procedures and systems of spatial information processing and allows for subsequent automation oft its essential processes. Today, high-resolution remote sensing data from operational satellite systems (such as QuickBird, Ikonos etc) facilitate the recognition and mapping of urban objects such as buildings, streets and even cars which, in the past could only be acquired by non-operational aerial photography. The satellite imagery can be used to generate maps and even 3D-representation of the urban space. Both maps and 3D-visualisations can be used for up-to-date land use mapping, zoning and urban planning purposes etc. The 3D-visualisation provides a deeper understanding of urban structures by integrating building height into the analysis. For this study remote sensing data of the Quickbird satellite data of 2005 were used. They show a section of the city of Sanaa in Yemen. The remote sensing data were supplemented and verified by other data, including terrain data. The image data are then subjected to thorough digital image. This procedure consists of a pixel-oriented classification of the satellite image acquisition at class level. In addition, a visual interpretation of the satellite image has been undertaken to identify and label individual objects (areas, surfaces, streets) etc. which were subsequently digitised. The town maps created in both procedures were merged to one. Through this combination of the results, the advantages of both maps are brought together and their respective weaknesses are eliminated or minimized. The digital collection of the contour lines on the orthophoto map of Sanaa allowed for the creation of a digital terrain model, which was used for the three-dimensional representation of Sanaa's historic district. The 3D-visualisation was created from the classification results as well as from the digital collection of the objects and the results of both visualisations were combined in a city map. In all classification procedures, paved roads, vegetation and single buildings were detected very well. The best overall results with the highest accuracy values achieved in the pixel-oriented classification at class level. Because each class has been classified separately, size belonging to that class can be better understood and optimised. The amount of data could be reduced, thus requiring less memory and resulting in a shorter processing time. The evaluation and validation of the pixel-oriented visual classification results at class level with the original satellite imagery was designed more simply and more accurately than other classification methods implemented. It was also possible by the separate recording of the class building to create a 3D-visualisation. A comparison of the maps created found that the map created from visual interpretation contains more information. The map based on pixel-oriented classification results at class level proved to be less labor- and time-consuming, and the structure of an oriental city with the main features will be worked out better. The 2D-maps and the 3D-visualisation provide a different spatial impression, and certain elements of an oriental city clearly detectable. These include the characteristic dead ends in the old town and the former city wall. The typical high-rise houses of Sanaa are detected in the 3D-visualisation. This work developed a generic procedure to detect, analyse and visualise urban structures in arid zone environments. The city of Sanaa served as a proof of concept. The results show that the workflow developed is instrumental in detecting typical structures of oriental cities. The results achieved in the case study Sanaa prove that the process can be adapted to the investigation of other arid zone cities in the Middle East with minor modifications.
Paß, Mario. "The New Skyline of Berlin : A 3D GIS shadow and visibility analysis at the Alexanderplatz". Thesis, Umeå universitet, Institutionen för geografi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-184742.
Texto completoSARTIRANA, DAVIDE. "Integrating numerical modelling and 3D Open Data databases for groundwater management in Milan Metropolitan City". Doctoral thesis, Università degli Studi di Milano-Bicocca, 2023. https://hdl.handle.net/10281/403720.
Texto completoCities are intricate areas, where a multitude of elements interact. A change in the paradigm towards sustainability goals, as the limit of soil consumption, is determining a greater use of the subsurface, thus abandoning the urban horizontal sprawl. This results in increasing interactions between groundwater and the underground infrastructures. Thus, it is reasonable to think that in the next years a huge effort will be allocated to research in urban hydrogeology. Among the cities that worldwide have been affected by this issue, the city of Milan (Northern Italy, Lombardy Region) experienced a strong groundwater table rise in the last decades, leading to flooding episodes for different categories of underground infrastructures. Considering that a future subsurface development has been already planned, this highlights the importance of adopting integrated strategies in the framework of both underground development and groundwater management. Within this general scheme, the present PhD project has been divided into three parts, to provide a detailed definition of the urban conceptual model for the city of Milan, that could play a pivotal role and support decision-making processes in urban planning policies. More specifically, the first part of the project deals with the reconstruction of a 3D Geodatabase (3D GDB) for urban underground infrastructures (UIs). Using Open Data databases as the primary, but not unique source of information, three categories of subsurface elements (private and public car parks, subway lines) have been gathered within the 3D GDB. This information has been then combined with groundwater table reconstructions of groundwater minimum and maximum conditions to identify the areas where the UIs were submerged by the water table. In the second part, data-driven techniques have been applied to analyse groundwater time-series of the shallow aquifer, occupied by the UIs. Statistical and geospatial techniques were used to reach a better understanding of the hydrogeologic system, pinpointing the main potential variables influencing the water table levels. Consequently, four management areas have been identified to act as future geographic units, defining specific groundwater management strategies in relation to UIs. In the third part, a local scale numerical model was implemented for the western part of the city to further evaluate groundwater/underground infrastructures interactions. In particular, groundwater infiltrations into UIs were quantified, leading to a better definition of the urban conceptual model. The numerical model was developed using MODFLOW-USG, and adopting the HFB package, supported by the DRAIN package to model the UIs. The results of this project pointed out that the combination of these different tools could be beneficial to manage the interactions between groundwater and the underground infrastructures and to support the decision makers in urban groundwater management. In this way, proper strategies could be adopted to sustainably design the future subsurface development of the city.
Grimstad, Benjamin. "Fotogrammetrisk 3D-modellering av en kraftledningsstolpe med UAV : Undersökning av modellernas geometriska kvalitet". Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-72912.
Texto completoDet övergripande syftet med studien är att undersöka hur mycket en fotogrammetriskt modellerad kraftledningsstolpe skiljer sig från verkligheten och undersöka vilken flyghöjd som ger bäst resultat. I studien har två 3D-modeller skapats med hjälp av UAV-bilder tillsammans med RTK-inmätta markstöd. I båda modellerna har lodbilder tagna från 40 meters höjd använts. Den första modellen kompletterades med snedbilder tagna från 40 meters höjd och den andra modellen med snedbilder tagna från 30 meters höjd. För att jämföra modellerna med den verkliga kraftledningsstolpen mättes totalt 25 detaljer på stolpen in med en totalstation och användes som kontrollpunkter. Dessa jämfördes med motsvarande punkter i 3D-modellerna och avvikelser räknades fram. Resultatet visar en radiell medelavvikelse i plan på 0,04 meter för modell 1 och 0,03 meter för modell 2. Medelfelet i höjd är 0,03 meter för modell 1 och 0,02 meter för modell 2. Resultatet visar också att snedbilder tagna på en lägre höjd, vilket innebär större kameravinkel och mindre pixelstorlek, har stor betydelse när programmet Pix4Dmapper ska återskapa en skalriktig och detaljrik 3D-modell. Slutsatsen är att bilder tagna från flyghöjden 30 meter ger en högre kvalitet på modellen.
Ergin, Ozge. "Modeling Building Height Errors In 3d Urban Environments". Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12609097/index.pdf.
Texto completoNguyễn, Hoàng Hà. "Automatic reconstruction of realistic road networks from GIS data". Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4007/document.
Texto completoRoad reconstruction is an important topic in 3D modeling. Recently, the steady development of many critical-accurate applications has posed a high demand for realistic road models, taking into account road-design constraints selected from civil engineering. We propose in this dissertation methods for building realistic road network models from GIS data.Firstly, problems of single road axis reconstruction from a polyline are addressed. We present a novel G1-piecewise-curve model which is not only faithful to the real road axis but also convenient and cheap to render. Our Least Square Growing Algorithm creates, as in civil engineering, an horizontal and a vertical curves, then combines them to produce a 3D road axis fitting well the polyline. Processing individual polyline will leads to the discontinuities at road intersections so we introduce a procedure to detect road relations, then we propose a global process to reconstruct all road axes with the considerations on further constraints of road ends.Finally, based upon the resulting road axis and road properties in the GIS database, we define a mathematical road surface model respecting the essential constraints of real road surfaces. To produce a geometry representing the final road surface, we build a coarse mesh from the input terrain highmap, subdivide it adaptively along the road axis, then adjust the altitude of concerning vertices to the value defined by the mathematical model in order to attain a correct mapping between the terrain and the real road
wang, menglin. "Building Information Modeling (BIM): Site-Building Interoperability Methods". Digital WPI, 2011. https://digitalcommons.wpi.edu/etd-theses/1026.
Texto completoLandgren, Peter. "Den tredimensionella arkeologin : En studie om 3D-modellernas betydelse i fältet". Thesis, Umeå universitet, Institutionen för idé- och samhällsstudier, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-173368.
Texto completoLu, Fei y Yuan Cao. "Three-Dimensional Modeling for Buildings Evacuation Management". Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-12622.
Texto completoHehl-Lange, Sigrid. "GIS-gestützte Analyse und 3D-Visualisierung der Funktionen naturnaher Lebensraumtypen und die sie beeinflussenden Wirkungen ausgewählter Landnutzungen /". [S.l.] : [s.n.], 2000. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13540.
Texto completoOwusu, Kofi Afriyie. "A prototype software system for the quantitative modelling of sedimentary basins and petroleum systems using 3D gis". Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488757.
Texto completoNishanbaev, Ikrom. "A Web GIS-based Integration of 3D Digital Models with Linked Open Data for Cultural Heritage Exploration". Thesis, Curtin University, 2021. http://hdl.handle.net/20.500.11937/88578.
Texto completoLambertini, Alessandro <1985>. "Innovative Use and Integration of Remote Sensed Geospatial Data for 3D City Modeling and GIS Urban Applications". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amsdottorato.unibo.it/8178/1/lambertini_alessandro_tesi.pdf.
Texto completoГуцул, Тарас y Галина Штанько. "Геоінформаційні технології – ефективний засіб візуалізації об’єктів архітектури". Thesis, Київський національний університет технологій та дизайну, 2021. https://er.knutd.edu.ua/handle/123456789/18154.
Texto completo75-90% of the information around contains geographical data. Among the many different types of software technologies that operate graphic information in the architectural field traditionally use CAD. However, the means of modern GIS systems in combination with innovative three-dimensional design technology and freely available remote sensing data of the Earth are able to provide high-quality photorealistic visualization and generate a complete set of drawings, information and materials transmitted as a result of design. Significant changes in domestic legislation and global trends in the GIS market convincingly testify to the viability of this technology.
FRATTA, ANDREA. "Nuove tecnologie applicate alla comunicazione della ricerca archeologica. Dal trattamento dei dati alla gestione efficiente per la fruizione e la condivisione su piattaforme web". Doctoral thesis, Università di Foggia, 2016. http://hdl.handle.net/11369/353975.
Texto completoSamuelsson, Åsa. "En övergång till 3D-dokumentation av fjärrvärmenätet i Gävle : En konverteringsmetod utarbetad till Gävle Energi". Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-21779.
Texto completoKemec, Serkan. "A Conceptual Framework For 3d Urban Disaster Risk Visualization In Geo-spatial Environment". Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613832/index.pdf.
Texto completos perception. In all phases of the disaster management, decision makers come across huge data sets with spatio-temporal content. It is hard to deal with these sets in order to find answers to the main question of &ldquo
How can we decrease the losses due to disasters?&rdquo
, which is at the core of the disaster management concept. To furnish this aim, disaster risk information has to be transparent and clearly stated to the public, decision makers and disaster managers. This might be more sophisticated than the calculation of the risk. Taking precautions before a disaster to reduce the causalities and lossess engendered by natural disasters is relatively cheaper, and more importantly, better than cure. To achieve enhanced preparations for all kinds of disasters, visualization is quite an important tool for decision support and risk communication. The basic aim of this research is to propose a conceptual framework, with the consideration of all stakeholders related to the disaster management issue to have a better risk communication, and to guide the design, implementation and integration of the 3D urban modeling tools into disaster risk visualization. Moreover, an empirical methodology is also developed for the generation of visualization solutions through the design, and employment of the tool for disaster management framework. The proposed framework has three main phases .These are the definition of visualization components, object representation, and needs assessment. A new LoD hierarchy with indoor is proposed to visualize all the possible 3D urban disaster situations in the first phase. Then, a decision rule with eight attributes is proposed in the second phase to establish a link between the hazard type and the LoD needed in a 3D urban model for visualization. This decision rule is applied in a proposed three-level hierarchycal structure. The assessed objects of these three levels are urban, sub-urban zone and building. Moreover, a method to define the needed sub-urban zone is proposed. Finally, different 3D urban modelling methods are analyzed to define the data and process needs of possible 3D urban disaster visualization situations. Two natural hazard cases are studied within the scope of this dissertation to assess the operability of the proposed framework. These implementations involve one earthquake and one tsunami case. Special attention is paid to finding one specific sample for two modelling viewpoints, namely static and dynamic. The first applications of the proposed framework with all the related features prove quite promising.
Gustafsson, Klas y Oskar Berg. "2D and 3D Visualization to Support Fieldwork in the Area of Utility Networks". Thesis, KTH, Geoinformatik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-221430.
Texto completoStanley, Christopher. "Flood Visualization for Urban Planning : An exploratory spatiotemporal visualization of storm water runoff in 2D and 3D". Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-21822.
Texto completoWhitman, Derek C. "Investigating Virtual Globes for a Prototype Community Archive of 3D Subsurface Data". BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4105.
Texto completoKristiansen, Jørn. "Fra natur til kart : Veien til 3D-modellering av en isfonn ved hjelp av GIS og geofysiske metoder". Thesis, Norges teknisk-naturvitenskapelige universitet, Geografisk institutt, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-22931.
Texto completo3D-modellering av ulike geomorfologiske objekter er i nyere tid blitt en mer vanlig måte å visualisere naturen på. Ved å generere 3D-modeller av slike objekter er det flere essensielle egenskaper ved objektet som avdekkes, for eksempel; dens romlige orientering, interne strukturer og dens volum. Brukere av modellen har en helt unik mulighet til å navigere seg rundt i rommet for så å rette søkelyset mot enkelte elementer ved studieobjektet. Brukeren kan "skrelle" av andre lag og dermed kun sitte igjen med enkeltelementer, som kan avdekke vanskelig tilgjengelig informasjon. Denne oppgaven viser hvordan en slik modell kan lages ved å kombinere RTK GPS undersøkelser med et nettverk av GPR (ground penetrating radar)- profiler, for så å etterprosessere datafangsten i ESRIs geografiske informasjonssystem. I samarbeid med forskningsprosjektet SPARC er studieobjektet satt til Kringsollfonna, en isfonn lokalisert i Oppdal kommune i Sør-Trøndelag fylke, Norge. Målet med oppgaven er å rette søkelyset mot arbeidsstrømmen for utvikling av en slik 3D-modell; fra feltarbeid, etterprosessering og til resultat og visualisering av fonnens snø- og islag i 3D.
Brandt, Acke. "Norrlands fornborgar : Funktioner & Tolkningar". Thesis, Umeå universitet, Institutionen för idé- och samhällsstudier, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-187036.
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