Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 30 for “"Virtual 3D"”.
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Multi-scale representations of virtual 3D city models
Virtual 3D city and landscape models are the main subject investigated in this thesis. They digitally represent urban space and have many applications in different domains, e.g., simulation, cadastral management, and city planning. Visualization is an elementary component of these applications. …
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Analysis and exploration of virtual 3D city models using 3D information lenses
… addresses real-time rendering techniques for 3D information lenses based on the focus & context metaphor. It analyzes, conceives, implements, and reviews its applicability to objects and structures of virtual 3D city models. In contrast to digital terrain models, the application of focus & …
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HandsOn : a portable system for collaboration on virtual 3D objects using binocular optical head-mounted display
… often have to collaborate remotely on 3D content, especially in fields such as urban planning or architectural design. We propose HandOn, a portable system for collaboration on virtual 3D objects. HandsOn leverages the recent advances in optical head-mounted display and finger tracking …
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The Visualisation and Expression of Virtual 3D Surfaces Explored through Custom Developed Interactive Software, Optically Mixed Coloured Surface Contouring and Fine Art Printmaking
… printmaking practices, into the new medium of 3D computer imaging exploring its unique visual language. To accomplish this goal the author has developed and written an interactive software application program for the representation of 3D free form surfaces by contours and employing optically …
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An empirical study of multisection virtual 3D healthcare learning environments. Investigation into the effect of multisection incorporation on the usability of online 3D virtual healthcare learning environments and the production of empirically derived guidelines for designing the learning environments.
… development of courseware presentation in the 3D Virtual Worlds platform. The technical objective of the study is to present the design of multisection strategy in developing healthcare course in 3D Virtual World online environment. The main aim of this study is to know the effects of …
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Physical reasoning in complex scenes is sensitive to mass
… about stability and other physical properties of virtual 3D towers composed of heavy and light blocks. We found their judgments correlated highly with a model observer that uses simulations based on realistic physical dynamics and sampling-based approximate probabilistic inference to efficiently …
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A model for 3D virtual environment for learning based on the detection of collaboration through an autonomous virtual tutor = Modelo para Detectar la Colaboración en un Entorno Virtual 3D para la Mejora de la Enseñanza Basada en un Tutor Virtual Autónomo
… presents a model that, through an autonomous virtual pedagogical agent, can support interaction in the frame of Collaborative Virtual Environments for learning. With the advantage of the visual aspect available in Virtual Environments, specifically the user embodiment, his/her avatar, the …
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Real-time visualization of 3D city models
… the handling of large geodata sets. Using virtual 3D city models, complex geospatial information can be communicated visually in an intuitive way. Therefore, real-time visualization of virtual 3D city models represents a key functionality for interactive exploration, presentation, analysis, …
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Cinemacraft: Exploring Fidelity Cues in Collaborative Virtual World Interactions
… in this thesis concerns the contribution of virtual human (or avatar) fidelity to social interaction in virtual environments (VEs) and how sensory fusion can improve these interactions. VEs present new possibilities for mediated communication by placing people in a shared 3D context. However, …
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Real-time optimal control of autonomous switched systems
… Aerial Vehicles (UAVs) that interact in a virtual 3D world.
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3D architecture form synthesizer
… here uses Java, Open Inventor and cutting-edge 3D graphics technology. Architects will be able to work in a virtual 3D environment, generating designs with the aid of a creative computer.
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Virtual camera selection using a semiring constraint satisfaction approach
… worlds view renderings from the viewpoint of a virtual camera. As such, determining a good view of the scene is important to present a good game or three-dimensional world. Previous research has developed technologies to nd good positions for the virtual camera, but little work has been done to …
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Holotab: Design and Evaluation of Interaction Techniques for a Handheld 3D Light Field Display
… fundamentals of how humans perceive the world in 3D and the techniques used to implement 3D display devices have been discussed for over a century, humans still rely on 2D displays for interaction with almost every digital device. This implies that humans have been missing a significant amount of …
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The Effects of Latency on 3D Interactive Data Visualizations
… of data visualizations, specifically 3D geospatial visualizations with large data sets. Subjects used a climate visualization showing temperatures spanning from the 19th to the 21st century to answer multiple choice questions. Metrics like their eye movements, time per question, and …
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Development of an integrated information system for archaeological heritage documentation
… heritage sites in a three-dimensional virtual world. The Laetoli site presents the first physical evidence of human bipedalism. Its consequent significance to human evolutionary science justifies the need for highly detailed and accurate documentation of its characteristics. The thesis …
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Integração de ambientes 2D/3D em sistemas Web: uma experiência com plataformas de e-Learning
… que permitem a criação de mundos virtuais 3D. Levando em conta estes aspetos surge a necessidade de explorar as potencialidades que a integração destas plataformas agregaria, por exemplo para o e-learning. O presente trabalho teve como objetivo o estudo e implementação de abordagens de …
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Simulation for LEGO Mindstorms robotics
… to simulate the motions of LEGO robotics in a virtual 3D environment. We use ODE (Open Dynamic Engine) and OpenGL, combined with ROBOLAB. The simulator allows users to test their ROBOLAB program before downloading it into the LEGO MINDSTORMS hardware. For users who do not have the hardware, …
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Application of shortest path algorithms to find paths of minimum radiation dose
… thesis to integrate the minimal dose paths into virtual reality models of the contaminated areas for personnel training purposes. A virtual 3D interactive model of a LaSalle Nuclear Power Plant room was developed and its minimal path solution was added to this VR model. An MCNP model of a …
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Enhancement of image recognition in digital close-range photogrammetry using mathematical equations and camera calibration
… to conventional methods for generation of virtual 3D models, which for use in CAD, CAM and CAE studies. However, many studies have revealed that most of the developed algorithms for 3D modelling possess several major challenges due to its tedious task during the image recognition phase. …
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Taphonomy, palaeoecology and taxonomy of an ophiuroid-stylophoran obrution deposit from the Lower Devonian Bokkeveld Group, South Africa
… segmented and stitched together to create a virtual 3D model of a portion of the Karbonaatjies obrution bed. This method allowed for the determination of the degree of fossil articulation, fossil orientation and faunal counts, without damaging the delicate echinoderm fossils. Furthermore, the …
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