Browsing University of Cape Town by Author "Blake, Edwin H"
Now showing items 1-20 of 31
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COLAB: social context and user experience in collaborative multiplayer games
Terblanche, Marcel (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2017)Recent studies have shown that the social context in which people play digital multiplayer games has an effect on their experience. Whether co-players are in the same location ("co-located") or in different locations ...
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A connectionist explanation of presence in virtual environments
Nunez, David (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2003)Presence has various definitions, but can be understood as the sensation that a virtual environment is a real place, that the user is actually in the virtual environment rather than at the display terminal, or that the ...
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DAS Writeback: A collaborative annotation system for proteins
Salazar, Gustavo A (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2010)We designed and developed a Collaborative Annotation System for Proteins called DAS Writeback, which extends the Distributed Annotation System (DAS) to provide the functionalities of adding, editing and deleting annotations. ...
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Design of a mobile support and content authoring tool to support deaf adults training in computer literacy skills
Ng'ethe, George Gitau (University of Cape TownFaculty of ScienceFaculty Science: ICTC4D, 2016)This dissertation investigates the challenges that Deaf adults encounter at the task of learning computer literacy skills. Deaf adults who communicate using South African Sign Language (SASL) come from poor socio-economic ...
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Developing locally relevant applications for rural South Africa : a telemedicine example
Chetty, Marshini (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2005)Within developing countries, there is a digital divide between rural and urban areas. In order to overcome this division, we need to provide locally relevant Information and Communication Technology (ICT) services to these ...
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Distributed shared memory for virtual environments
Godfrey, Andrew (University of Cape TownFaculty of ScienceDepartment of Computer Science, 1997)This work investigated making virtual environments easier to program, by designing a suitable distributed shared memory system. To be usable, the system must keep latency to a minimum, as virtual environments are very ...
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An extended spreadsheet paradigm for data visualisation systems, and its implementation
Nuñez, Fabian (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2000)We describe a data visualisation system which uses spreadsheets as its user interface metaphor. Similar systems implemented in the past were hampered by the contradiction between an imperative formula language and the ...
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An extension to optic flow analysis for the generation of computer animated images
Webb, Ian Andrew (University of Cape TownFaculty of ScienceDepartment of Computer Science, 1998)This dissertation seeks to develop image based animation methods using the technique of optic flow analysis developed for a moving planar object. Image based rendering is presented as a class of algorithm using two dimensional ...
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Extraction of surface texture data from low quality photographs to aid the construction of virtual reality models of archaeological sites
Williams, John G (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2001)A tool has been designed and implemented to use information extracted from photographs captured using uncalibrated cameras (so-called casual photographs) to fill the occlusions which occur in three-dimensional models of ...
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Fast and accurate visibility preprocessing
Nirenstein, Shaun (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2003)Currently, the standard approach to visibility preprocessing algorithms is to use a form of approximate solution, known as conservative culling. Such algorithms over-estimate the set of visible polygons. This compromise ...
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Gesture based interface for asynchronous video communication for deaf people in South Africa
Ramuhaheli, Tshifhiwa (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2010)The preferred method of communication amongst Deaf people is that of sign language. There are problems with the video quality when using the real-time video communication available on mobile phones. The alternative is to ...
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Incremental volume rendering using hierarchical compression
Haley, Michael Blake (University of Cape TownFaculty of ScienceDepartment of Computer Science, 1996)The research has been based on the thesis that efficient volume rendering of datasets, contained on the Internet, can be achieved on average personal workstations. We present a new algorithm here for efficient incremental ...
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Interactive cultural story-telling virtual environments using San stories
Lesaoana, M (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2004)Story-telling is being used for the preservation of culture, and interactive story-telling in particular is attractive for its ability to provide the user with a hands-on experience. We explored the feasibility of interactive ...
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Perceptual refinement for hierarchical radiosity
Secchia, Adrian (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2000)This dissertation explores the use of a simple model of the human visual system to yield a performance improvement with hierarchical radiosity. Hierarchical radiosity is a physically based rendering algorithm and hence ...
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Presence and co-presence in collaborative virtual environments
Casaneuva, Juan S (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2001)Presence in Collaborative Virtual Environments (CVEs) can be defined into personal presence and co-presence. Personal presence is having a feeling of "being there" in the CVE yourself. Co-presence is having a feeling that ...
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Providing informational support to HIV + women in a virtual environment : a case study comparing the effects of virtual reality and paper media for content delivery
Brown, Sarah (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2008)This dissertation presents a comparison of the effects of two media, VR and paper (i.e. pamphlets) in communicating supportive information to an HIV+ sample group. We created a VE to provide social and informational support ...
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Quality control tools for interactive rendering of 3D triangle meshes
Southern, Richard (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2002)In this dissertation we explore methods of quality control of untextured polygonal models. The tools presented build, evaluate and improve on the field of multiresolution analysis through decimation. We evaluate the quality ...
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Scaffolding java programming on a mobile phone for novice learners
Mbogo, Charity Chao (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2015)The ubiquity of mobile phones provides an opportunity to use them for learning programming beyond the classroom. This would be particularly useful for novice learners of programming in resource- constrained environments. ...
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SignDIn: Designing and assessing a generisable mobile interface for Sign support
Reddy, Marshalan (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2015)SignSupport is a collaborative project between the Computer Science departments of the University of Cape Town (UCT) and the University of the Western Cape (UWC), South Africa. The intention of the software is to assist ...
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Softbridge : a socially aware framework for communication bridges over digital divides
Tucker, William David (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2009)Computer scientists must align social and technical factors for communication technologies in developing regions yet lack a framework to do so. The novel Softbridge framework comprises several components to address this ...