Interactive 3-D spatial analysis in a virtual reality environment

 

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dc.contributor.advisor Rüther, Heinz en_ZA
dc.contributor.advisor Gain, James en_ZA
dc.contributor.author Bhunu, Solomon Tichaona en_ZA
dc.date.accessioned 2014-08-29T12:47:57Z
dc.date.available 2014-08-29T12:47:57Z
dc.date.issued 2004 en_ZA
dc.identifier.citation Bhunu, S. 2004. Interactive 3-D spatial analysis in a virtual reality environment. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/6766
dc.description Includes bibliographical references. en_ZA
dc.description.abstract The emergence of virtual reality and related tools enables the fundamental infrastructure to begin building virtual cities, which can provide an interactive simulation and analysis environment for planning and management of urban places. The virtual city will provide urban managers with a computer environment to interface with the multitude of complex physical and social data needed to plan and manage cities. A range of innovative technologies are being developed that offer different ways of modelling and representing built-form and associated urban information with real-time interaction over the Internet. For all these efforts in technological development, one of the main topical issues remains, the development of a representation (data structure) that is capable of both static and dynamic spatial analysis operations. This research focuses on developing a 3-D data representation for urban management, which would fully support both static and dynamic spatial analysis operations. It further explores the possibilities inherent in a hybrid of the Boundary representation (B-rep) and distance field modelling (a technique which is finding application in 3-D medical imaging). The research makes an analysis of the existing B-reps before developing the best form which could easily be integrated with the Distance Field (DF). Since this is the first known research in application of DFs in urban GIS, the research further offers the design and adoption of Distance field maps. Further designs are undertaken for the necessary algorithms that would allow dynamic analysis operations to be implemented within the DF environment. The conceptual design is mapped through Entity-Relationship modelling into a Database Management System (DBMS). The B-rep component is maintained within the DBMS whilst the DF component is generated on the ""fly"". For the distributed application development, a 3-tier approach that merges the client-side (web browser), application server and database server is proposed. Based on this approach, a Web based prototype toolkit is designed and implemented using affordable ""off-the-shelf' software applications and resources that are relatively easy to set-up and use, and would require standard PC-processor power available to a home user with a modem link (i.e. not a high-end graphics workstation). The novel aspects of this thesis can be summarised as: 1. The use of a hybrid representation is new in 3-D GISs. 2. The use of Distance Fields and the development of related spatial analysis operations is new in Geo-Information Systems. Furthermore, the research proposes a new distance field modelling approach; the single Distance Fields (see Chapter 5). 3. The implementation environment makes use of the existing tools and integrates them in a novel way. en_ZA
dc.language.iso eng
dc.subject.other Computer Science en_ZA
dc.title Interactive 3-D spatial analysis in a virtual reality environment en_ZA
dc.type Doctoral Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Department of Computer Science en_ZA
dc.type.qualificationlevel Doctoral
dc.type.qualificationname PhD
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Bhunu, S. T. (2004). <i>Interactive 3-D spatial analysis in a virtual reality environment</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Computer Science. Retrieved from http://hdl.handle.net/11427/6766 en_ZA
dc.identifier.chicagocitation Bhunu, Solomon Tichaona. <i>"Interactive 3-D spatial analysis in a virtual reality environment."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Computer Science, 2004. http://hdl.handle.net/11427/6766 en_ZA
dc.identifier.vancouvercitation Bhunu ST. Interactive 3-D spatial analysis in a virtual reality environment. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Computer Science, 2004 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/6766 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Bhunu, Solomon Tichaona AB - The emergence of virtual reality and related tools enables the fundamental infrastructure to begin building virtual cities, which can provide an interactive simulation and analysis environment for planning and management of urban places. The virtual city will provide urban managers with a computer environment to interface with the multitude of complex physical and social data needed to plan and manage cities. A range of innovative technologies are being developed that offer different ways of modelling and representing built-form and associated urban information with real-time interaction over the Internet. For all these efforts in technological development, one of the main topical issues remains, the development of a representation (data structure) that is capable of both static and dynamic spatial analysis operations. This research focuses on developing a 3-D data representation for urban management, which would fully support both static and dynamic spatial analysis operations. It further explores the possibilities inherent in a hybrid of the Boundary representation (B-rep) and distance field modelling (a technique which is finding application in 3-D medical imaging). The research makes an analysis of the existing B-reps before developing the best form which could easily be integrated with the Distance Field (DF). Since this is the first known research in application of DFs in urban GIS, the research further offers the design and adoption of Distance field maps. Further designs are undertaken for the necessary algorithms that would allow dynamic analysis operations to be implemented within the DF environment. The conceptual design is mapped through Entity-Relationship modelling into a Database Management System (DBMS). The B-rep component is maintained within the DBMS whilst the DF component is generated on the ""fly"". For the distributed application development, a 3-tier approach that merges the client-side (web browser), application server and database server is proposed. Based on this approach, a Web based prototype toolkit is designed and implemented using affordable ""off-the-shelf' software applications and resources that are relatively easy to set-up and use, and would require standard PC-processor power available to a home user with a modem link (i.e. not a high-end graphics workstation). The novel aspects of this thesis can be summarised as: 1. The use of a hybrid representation is new in 3-D GISs. 2. The use of Distance Fields and the development of related spatial analysis operations is new in Geo-Information Systems. Furthermore, the research proposes a new distance field modelling approach; the single Distance Fields (see Chapter 5). 3. The implementation environment makes use of the existing tools and integrates them in a novel way. DA - 2004 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2004 T1 - Interactive 3-D spatial analysis in a virtual reality environment TI - Interactive 3-D spatial analysis in a virtual reality environment UR - http://hdl.handle.net/11427/6766 ER - en_ZA


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