To see the other types of publications on this topic, follow the link: Virtual reality visualization.
Dissertations / Theses on the topic 'Virtual reality visualization'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Virtual reality visualization.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Modjeska, David K. "Hierarchical data visualization in desktop virtual reality." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0014/NQ53695.pdf.
Full text
2
Gustafsson, Mattias, and Oliver Odd. "Virtual Reality Data Visualization : Concepts, technologies and more." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-37222.
Full textAbstract:
Data Visualization (DV) can be seen as an important tool for communication and data analysis. Especially when huge amounts of data are involved, visual representation of data can facilitate observation of trends and patterns as well as understanding. Currently, two dimensional displays are mainly used for Data Visualization, both in two and three dimensions (2D and 3D). However, two dimensional displays are limited in terms of 3D visualization because they do not allow for true sense of depth and do not cover the observer’s full Field Of View (FOV). An alternative approach is to use Virtual Reality (VR), which provides an immersive and interactive 3D environment. VR has been mainly used for gaming and simulated training. However, other areas are now emerging because VR technologies became relatively affordable. For example, one possibility is to explore VR for DV and this was the main goal of this project. To accomplish that, a literature study was performed to identify terminologies and definitions, hardware and software technologies, techniques and examples in the fields of DV and VR. In addition, in order to exemplify DV through VR, a prototype system was implemented using Unity 3D, a leading engine for VR. To visualize the developed VR environment, a HTC Vive Head Mounted Display (HMD) was used. The developed prototype system can display data from a local dataset in a scatter plot with three axis in VR. In the virtual environment created by the system, the user can select the attributes in the dataset to be displayed by the 3D scatter plot. Once the data is plotted, the user can use the handheld joystick to move, rotate, tilt and scale the scatter plot. Achieved results indicate immersion and interaction as the main perceived benefits of DV using VR.Datavisualisering (DV) kan ses som ett viktigt verktyg för kommunikation och dataanalys, speciellt när stora mängder data behandlas. Visuell representation kan främja observationen av trender och mönster samt förståelsen av datan. För närvarande används tvådimensionella displayer huvudsakligen för datavisualisering, både i två och tre dimensioner (2D och 3D). Emellertid är tvådimensionella displayer begränsade i 3D-visualisering eftersom de inte möjliggör äkta djupseende, och täcker inte observatörens fulla synfält (Field Of View (FOV)). Ett alternativ tillvägagångssätt är att använda Virtual Reality (VR), vilket tillhandahåller en omslutande och interaktiv 3D-miljö. VR har huvudsakligen används för spel och simulerad träning. Däremot börjar nya användningsområden uppstå då VR teknologin har blivit mer prisvärd. Ett användningsområde är VR för DV, vilket var det huvudsakliga syftet för det här arbetet. För att uppnå syftet utfördes en litteraturstudie för att identifiera teknologier och definitioner, hårdvaru- och mjukvaruteknologier, tekniker och exempel inom området av DV och VR. Dessutom, för att exemplifiera DV genom VR, utvecklades ett prototypsystem. Vilket implementerades genom Unity 3D, en av de ledande spelmotorerna. För att visualisera den utvecklade VR-miljön användes ett HTC Vive Head Mounted Display (HMD). Den utvecklade prototypen kan visualisera data från ett lokalt dataset genom ett spridningsdiagram med 3 axlar, i VR. I den virtuella miljön som skapas av systemet tillåts användaren att välja attribut från datasetet för att sedan visualisera dessa genom det tredimensionella spridningsdiagrammet. När datan väl är visualiserad, kan användaren använda de handhållna kontrollerna för att flytta, rotera, luta och skala grafen. Uppnådda resultat indikerar på omslutning och interaktion som de huvudsakliga fördelarna av DV genom VR.
3
Bidoshi, Kosta. "Virtual Reality Visualization for Maps of the Future." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1046459366.
Full text
4
Seibold, Andreas, Ralph Stelzer, and Bernhard Saske. "Virtual Reality bei Kärcher." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-228177.
Full textAbstract:
Die Firma Kärcher wurde 1935 von Alfred Kärcher in Stuttgart-Bad Cannstatt zur Entwicklung und Herstellung industrieller Produkte auf dem Gebiet der Heiztechnik gegründet. Der erste Heißwasser-Hochdruckreiniger Europas entstand 1950 am neuen Stammsitz in Winnenden und bedeutete für Kärcher den Durchbruch in der Reinigungstechnik. Ein weiterer Meilenstein in der Firmengeschichte war die Einführung des ersten tragbaren Hochdruckreinigers und die damit verbundene Erschließung des Consumer-Marktes 1984.
5
Dye, Michael P. "Vesuvius interactive atmospheric visualization in a virtual environment /." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1447607.
Full text
6
Chan, Mei-mei Amy, and 陳美美. "An integrated system for virtual simulation and visualization of rapidprototyping." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B30502135.
Full text
7
Sätterkvist, Arvid. "Visualizing conversational data in virtual reality." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209590.
Full textAbstract:
Since the first implementation of a simple chatbot was made in1964, countless research and development have been made to makethe fascinating idea of talking to a computer a reality. But not untilrecently, have chatbots started to make an appearance in everydaylives amongst a broader audience. As the popularity of chatbotsincreases, the demands and functionality of the chatbots rises whichconsequently expands the size and complexity of the chatbot. Theconversational data from a chatbot can become very complex andhard to understand. Therefore, to ensure the continuousadvancement of features in chatbots, the developer needs tools andinstruments to compete in the growing market. Through a prototype based design process, a problem amongstdevelopers to visualize and understand the conversational data froma chatbot is first identified and addressed. A Conversational DataVisualization (CDV) prototype in virtual reality is then developedwith the intention to help developers understand and explore theconversational data from the chatbot they are working on. Thedesign of the CDV is based on theories about key features ofvisualizations in 3D and related work that study visualizations withsimilar data structures as the conversational data from chatbots.Furthermore, the features of the CDV is based on the identifiedproblem of visualizing conversational data amongst developers.Due to the importance of participatory design in a design process,an exploratory usability test of the CDV prototype was conductedto further explore the design choices regarding the identifiedproblem. The conversational data is visualized with tree structures in acircular formation to allow for visualization of links betweendifferent conversations. Results from the explorative usability testindicates that the visualization gave the users of the CDV anunderstandable overview of the conversational data. However,finding specific stories and nodes in the conversational data wasidentified as a problem due to inadequate information in theoverview of the visualization.Sedan den första implementationen av en chatbot år 1964, har en stor mängd forskning och utveckling skett för att göra den fascinerandeidén att prata med en dator verklighet. Det är inte förens på senare tid som chatbot har spridit sig till det vardagliga livet hos den stora massan.Samtidigt som utspridningen av chatbotar ökar så höjs kraven på funktionalitet vilket i sin tur utökar storleken och komplexiteten hoschatboten. Konversionsdata hos en chatbot kan bli väldigt komplex och svår att förstå. För att säkerställa den fortsatta utvecklingen avchatbotar behövs därför verktyg och instrument utvecklas för att hjälpa utvecklare av chatbotar. Genom en prototypbaserad designprocess identifieras ett problem hos utvecklare att visualisera och förstå konversationsdata från en chatbot.En prototyp av en konversationdata-visualisering (KDV) är sedan utvecklad med syftet att hjälpa utvecklare förstå och utforskakonversationsdata från chatbotar de jobbar på. Designen på KDV är baserad på teorier angående nyckelområden inom 3D-visualisering ochrelaterade forskningsarbeten som studerar visualiseringar med data liknande konversationsdata från chatbotar. Designen av KDV är ocksåbaserad på problem som identifieras hos utvecklare av chatbotar. På grund av hur viktigt det är att inkludera användaren i designprocesser såutförs en utforskande användbarhetsstudie på KDV för att utforska implementeringarna av dem identifierade designbesluten angående detidentifierade problemen hos utvecklare. Konversationsdata är visualiserad med trädstrukturer i en cirkulär formation för att tillåta visualisering av länkar mellan olika konversationer.Resultat från den utforskande användarbarhetsstudien indikerar att KDV är en visualisering som förstås av användarna. Dock så identifieradesett problem med att hitta specifika noder i konversationsdata eftersom översikten av visualisering inte innehöll tillräckligt med information.
8
Chan, Mei-mei Amy. "An integrated system for virtual simulation and visualization of rapid prototyping /." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B23829655.
Full text
9
He, Changming. "Volume Visualization in Projection-Based Virtual Environments: Interaction and Exploration Tools Design and Evaluation." Thesis, Griffith University, 2011. http://hdl.handle.net/10072/367768.
Full textAbstract:
Examples of volume data include medical scanned data such as CT and MRI data, seismic survey data, and computational fluid dynamic (CFD) data, etc. To better understand volumetric datasets, people use computer hardware and software to manipulate the data and generate 2D projections for viewing; this process is called volume visualization. Much research on volume visualization has been focused on
volume rendering (how to render larger sets of data faster with a higher level of realism) or transfer function generation (how to highlight the regions of interest). To help improve the efficiency and efficacy of volume visualization, this research proposed using two different approaches. The first approach is to integrate virtual reality environments (VEs) and human computer interaction (HCI) technologies in
volume visualization applications. The second approach is to use various virtual tools that allow users to directly explore and manipulate the volume data in 3D space. A volume visualization system named VRVolVis (Virtual Reality Volumes Visualization System) has been designed and developed to implement these approaches. Many innovations have been integrated into this system, including a fast
volume rendering engine, an intuitive HCI paradigm tailored for volume visualization in VEs, and 8 innovative geometric tools that can assist users to fully reveal the internal structure of volumetric datasets. The tools are the clipping plane widget, the data slab widget, the volume probing tool, the volume clipping tool, the regional enhancement tool, the virtual light, the volume eraser and restorer, and the shooting
star tool. Two sets of experiments involving 33 participants were conducted, and the experimental results supported the assertion that volume visualization tasks would be performed significant better in VR viewing conditions than Stereo and Conventional conditions, and that using these geometric tools can significantly improve the efficiency and efficacy of the volume visualization process.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Information and Communication Technology
Science, Environment, Engineering and Technology
Full Text
10
Hetsel, Gene A. (Gene Arthur). "Virtual Reality for Scientific Visualization: an Exploratory Analysis of Presentation Methods." Thesis, University of North Texas, 1997. https://digital.library.unt.edu/ark:/67531/metadc500890/.
Full textAbstract:
Humans are very effective at evaluating information visually. Scientific visualization is concerned with the process of presenting complex data in visual form to exploit this capability. A large array of tools is currently available for visual presentation. This research attempts to evaluate the effectiveness of three different presentation models that could be used for scientific visualization. The presentation models studied were, two-dimensional perspective rendering, field sequential stereoscopic three dimensional rendering and immersive virtual reality rendering. A large section of a three dimensional sub surface seismic survey was modeled as four-dimensional data by including a value for seismic reflectivity at each point in the survey. An artificial structure was randomly inserted into this data model and subjects were asked to locate and identify the structures. A group of seventeen volunteers from the University of Houston student body served as subjects for the study. Detection time, discrimination time and discrimination accuracy were recorded. The results showed large inter subject variation in presentation model preference. In addition the data suggest a possible gender effect. Female subjects had better overall performance on the task as well as better task acquisition.
11
Królewiak, Adam. "Stereoscopic and interactive visualization of electromagnetic fields in virtual reality environments." Artois, 2004. http://www.theses.fr/2004ARTO0204.
Full textAbstract:
La thèse est consacrée aux méthodes scientifiques de visualisation des champs électromagnétiques dans un environnement tridimensionnel. Les méthodes élaborées concernent trois domaines : la représentation graphique de données scientifiques, l'interaction avec l'utilisateur, la réalisation de la visualisation stéréoscopique. Des méthodes de navigation dans l'espace, de manipulation des objets et du contrôle de l'application stéréoscopique par menus ont été développés. Un scenarii d'interaction et de synchronisation des tâches est également décrit. L'extraction de valeur locales en un point quelconque de la représentation graphique constitue un point fort de la thèse. Cette opération est rendue possible par l'utilisation d'une structure de données originale. Un chapitre est entièrement consacré aux méthode de réalisation d'images stéréoscopiques et à leur recomposition pour obtenir une perception en relief. Les principaux paramètres sont déterminés par une procédure automatiqueThe thesis is devoted to the methods of electromagnetic fields' scientific visualization set in multidimensional virtual reality environment which gives spatial image and interaction with data space. Developed methods concern three domains: graphical methods of scientific data presentation, human-machine communication and realization of stereoscopy. In order to present volumetric and vector features the standard methods were adopted: colored maps (interactively cutting data set), isosurfaces and cones (vectors). The method of navigation within data space, objects' manipulation and control of application using menu system were developed. The most interesting method is numerical data querying directly from graphical objects realized based on the author's data structures. Much attention was devoted to stereo image creation and its influence on the space perception improvement. The result is the method of stereo parameters' automatic calculation
12
Cheung, Wai Shan. "Augmented reality system based on silicon microdisplay /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?ECED%202006%20CHEUNG.
Full text
13
Sela, Sebastian, and Elliot Gustafsson. "Interactive Visualization of Underground Infrastructures via Mixed Reality." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-39771.
Full textAbstract:
Visualization of underground infrastructures, such as pipes and cables, can be useful for infrastructure providers and can be utilized for both planning and maintenance. The purpose of this project is therefore to develop a system that provides interactive visualization of underground infrastructures using mixed reality. This requires positioning the user and virtual objects outdoors, as well as optimizing the system for outdoor use. To accomplish these, GPS coordinates must be known so the system is capable of accurately drawing virtual underground infrastructures in real time in relation to the real world. To get GPS data into the system, a lightweight web server written in Python was developed to run on GPS-enabled Android devices, which responds to a given HTTP request with the current GPS coordinates of the device. A mixed reality application was developed in Unity and written in C# for the Microsoft HoloLens. This requests the coordinates via HTTP in order to draw virtual objects, commonly called holograms, representing the underground infrastructure. The application uses the Haversine formula to calculate distances using GPS coordinates. Data, including GPS coordinates, pertaining real underground infrastructures have been provided by Halmstad Energi och Miljö. The result is therefore a HoloLens application which, in combination with a Python script, draws virtual objects based on real data (type of structures, size, and their corresponding coordinates) to enable the user to view the underground infrastructure. The user can customize the experience by choosing to display certain types of pipes, or changing the chosen navigational tool. Users can also view the information of valves, such as their ID, type, and coordinates. Although the developed application is fully functional, the visualization of holograms with HoloLens outdoors is problematic because of the brightness of natural light affecting the application’s visibility, and lack of points for tracking of its surroundings causing the visualization to be wrongly displayed. Visualization of underground infrastructures, such as pipes and cables, can be useful for infrastructure providers and can be utilized for both planning and maintenance. The purpose of this project is therefore to develop a system that provides interactive visualization of underground infrastructures using mixed reality. This requires positioning the user and virtual objects outdoors, as well as optimizing the system for outdoor use. To accomplish these, GPS coordinates must be known so the system is capable of accurately drawing virtual underground infrastructures in real time in relation to the real world. To get GPS data into the system, a lightweight web server written in Python was developed to run on GPS-enabled Android devices, which responds to a given HTTP request with the current GPS coordinates of the device. A mixed reality application was developed in Unity and written in C# for the Microsoft HoloLens. This requests the coordinates via HTTP in order to draw virtual objects, commonly called holograms, representing the underground infrastructure. The application uses the Haversine formula to calculate distances using GPS coordinates. Data, including GPS coordinates, pertaining real underground infrastructures have been provided by Halmstad Energi och Miljö. The result is therefore a HoloLens application which, in combination with a Python script, draws virtual objects based on real data (type of structures, size, and their corresponding coordinates) to enable the user to view the underground infrastructure. The user can customize the experience by choosing to display certain types of pipes, or changing the chosen navigational tool. Users can also view the information of valves, such as their ID, type, and coordinates. Although the developed application is fully functional, the visualization of holograms with HoloLens outdoors is problematic because of the brightness of natural light affecting the application’s visibility, and lack of points for tracking of its surroundings causing the visualization to be wrongly displayed.
14
Laha, Bireswar. "Immersive Virtual Reality and 3D Interaction for Volume Data Analysis." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/51817.
Full textAbstract:
This dissertation provides empirical evidence for the effects of the fidelity of VR system components, and novel 3D interaction techniques for analyzing volume datasets. It provides domain-independent results based on an abstract task taxonomy for visual analysis of scientific datasets. Scientific data generated through various modalities e.g. computed tomography (CT), magnetic resonance imaging (MRI), etc. are in 3D spatial or volumetric format. Scientists from various domains e.g., geophysics, medical biology, etc. use visualizations to analyze data. This dissertation seeks to improve effectiveness of scientific visualizations.
Traditional volume data analysis is performed on desktop computers with mouse and keyboard interfaces. Previous research and anecdotal experiences indicate improvements in volume data analysis in systems with very high fidelity of display and interaction (e.g., CAVE) over desktop environments. However, prior results are not generalizable beyond specific hardware platforms, or specific scientific domains and do not look into the effectiveness of 3D interaction techniques.
We ran three controlled experiments to study the effects of a few components of VR system fidelity (field of regard, stereo and head tracking) on volume data analysis. We used volume data from paleontology, medical biology and biomechanics. Our results indicate that different components of system fidelity have different effects on the analysis of volume visualizations. One of our experiments provides evidence for validating the concept of Mixed Reality (MR) simulation.
Our approach of controlled experimentation with MR simulation provides a methodology to generalize the effects of immersive virtual reality (VR) beyond individual systems. To generalize our (and other researchers') findings across disparate domains, we developed and evaluated a taxonomy of visual analysis tasks with volume visualizations. We report our empirical results tied to this taxonomy.
We developed the Volume Cracker (VC) technique for improving the effectiveness of volume visualizations. This is a free-hand gesture-based novel 3D interaction (3DI) technique. We describe the design decisions in the development of the Volume Cracker (with a list of usability criteria), and provide the results from an evaluation study. Based on the results, we further demonstrate the design of a bare-hand version of the VC with the Leap Motion controller device. Our evaluations of the VC show the benefits of using 3DI over standard 2DI techniques.
This body of work provides the building blocks for a three-way many-many-many mapping between the sets of VR system fidelity components, interaction techniques and visual analysis tasks with volume visualizations. Such a comprehensive mapping can inform the design of next-generation VR systems to improve the effectiveness of scientific data analysis.Ph. D.
15
Panahi, Aliakbar. "Big Data Visualization Platform for Mixed Reality." VCU Scholars Compass, 2017. https://scholarscompass.vcu.edu/etd/5198.
Full textAbstract:
The visualization of data helps to provide faster and deeper insight into the data. In this work, a system for visualizing and analyzing big data in an interactive mixed reality environment is proposed. Such a system can be used for representing different types of data such as temporal, geospatial, network graph, and high dimensional. Also, an implementation of this system for four different data types are created. The data types include network data, volumetric data, high dimensional, and spectral data for different mixed reality devices such as Microsoft HoloLens, Oculus Rift, Samsung Gear VR, and Android ARCore were created. It was shown that such a system could store and use billions of samples and represent millions of them at once.
16
Парфененко, Юлія Вікторівна, Юлия Викторовна Парфененко, Yuliia Viktorivna Parfenenko, and I. Nazarov. "Information System for Interactive Visualization of Three-Dimensional Objects Using Virtual Reality." Thesis, Sumy State University, 2016. http://essuir.sumdu.edu.ua/handle/123456789/47059.
Full textAbstract:
This paper describes the solution of the problem of the interactive 3D models visualization. The application for 3D models visualization which is based on the virtual reality technology for Android system has been developed.
17
Sullivan, Paul Andrew. "Graph-Based Data Visualization in Virtual Reality: A Comparison of User Experiences." DigitalCommons@CalPoly, 2016. https://digitalcommons.calpoly.edu/theses/1598.
Full textAbstract:
Virtual reality is currently in the spotlight, attracting intense scrutiny by the press, technology companies, and consumers. After twenty years of dormancy, the technology has experienced a renaissance following advancements in both hardware and software. Most of these developments, and thus press attention, have been centered on entertainment. However, if the technology is going to continue to grow, it must be useful in a wide variety of situations. This paper explores the effectiveness of visualizing data in virtual reality in comparison to traditional presentations.
In this thesis, we present an approach to displaying data in a virtual reality environment. We drew upon various visualization and design principles in two dimensions (2D) and extended and implemented them in three dimensions (3D). Finally, we experimented with animations to highlight how the immersive qualities of virtual reality could help direct the user's attention to important features.
To verify our work, we tested users' ability to understand worldwide economic data represented as graphs. We measured the speed and accuracy of each subject's responses as they viewed the economic data in two environments: a virtual reality (VR) environment using the Oculus Rift to look at our 3D animated chart, and a more traditional environment with a series of 2D paper charts. We concluded that for newcomers to VR, 2D charts are faster and more accurate. However, 3D visualizations are more engaging and are superior when searching for certain kinds of information such as the highest and lowest values in a set.
18
Garrison, Kevin Laurence. "Exploration of multiple pathways for the development of immersive virtual reality environments /." Full text available online, 2008. http://www.lib.rowan.edu/find/theses.
Full text
19
Lin, Dawei. "A virtual visualization strategy for the creation of personalized products." Swinburne Research Bank, 2006. http://hdl.handle.net/1959.3/38322.
Full textAbstract:
Thesis (DDes) - Faculty of Design, Swinburne University of Technology, 2006.Submitted in partial fulfillment of the requirements for the degree of Doctor in Design, Faculty of Design, Swinburne University of Technology - 2006. Typescript. Submitted in partial fulfilment of the requirements for the degree of Doctor in Design, Swinburne University of Technology, 2006. Bibliography: p. 88-101.
20
Tipparach, Santipab. "The Design of Virtual Reality Based Data Visualization and User Interface Design in a Semi-Automated Cyber-Security Research Application." Thesis, North Dakota State University, 2019. https://hdl.handle.net/10365/31720.
Full textAbstract:
Virtual Reality is currently an affordable and consumer ready technology used by many in the games and interactive media industry, however unlike the user interface standards in mobile, PCs, and Macs, VR UI design can vary in complexity and usability. VR has many times been linked in films, TV shows, and animation as a method for navigating through cyberspace. It has been portrayed to be involved in the process of hacking a computer on some network. This study will look at approaches to developing a UI system using cyber-security research applications as a basis for designing a framework. Throughout, this research will analyze the different approaches to UI design and data visualization, extract relevant information, and find out what approaches will help improve the VR software front end design.
21
Lönnerberg, Mattias. "Cutting Tetrahedra : Affordances and Limitations of Using Virtual Reality Visualization for Tetrahedral Cutting." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-211544.
Full textAbstract:
Finite element method researchers aim to create algorithms for optimally cutting complex 3D shapes into several tetrahedra for computational efficiency in simulations. It is difficult to create a mental representation of the 3D shapes as they increase in complexity. Our hypothesis is that a virtual reality (VR) visualization could help with creating this mental 3D representation. In this thesis, a desktop tool using a 2D monitor and a virtual reality tool were compared in a controlled within-subject user study. The findings show that VR gave a better understanding of the 3D objects. Participants reported VR to be more intuitive and enjoyable than the 2D monitor. However, it did not improve the time it took to complete the study tasks and, although it made the users perceive that they were more accurate, the observational data suggests that more accurate cuts were made using the desktop tool.Forskare försöker skapa algoritmer för att optimalt skära komplexa 3D former i flera tetraeder för att simplifiera simuleringar. Det är svårt att skapa en mental representation av 3D figurerna när dom blir mer komplexa. En virtual reality visualisering skulle kunna hjälpa till att skapa denna mentala 3D representation. Genom att skapa ett verktyg för en dator med 2D monitor och ett verktyg som använder VR och därefter jämföra dem i en kontrollerad användarstudie med upprepade försök, visade det sig att VR gav en bättre förståelse av 3D objekten. Det var dessutom mer intuitivt och njutbart. Dock minskade det inte tiden som behövdes för att avsluta studiens uppgifter och trots att användarna uppfattade att dom var mer pricksäkra i VR så påvisade den observerade datan att användare gjorde mer träffsäkra skärningar i verktyget utan VR.
22
Li, Zhaoyi, and n/a. "Analysis and Design of Virtual Reality Visualization for a Micro Electro Mechanical Systems (MEMS) CAD Tool." Griffith University. School of Information and Communication Technology, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20060731.121340.
Full textAbstract:
Since the proliferation of CAD tools, visualizations have gained importance.. They provide invaluable visual feedback at the time of design, regardless whether it is fbi civil engineering or electronic circuit design-layout. Typically dynamic visualizations are produced in a two phase process: the calculation of positions and rendering of the image and its presentation as an animated video clip. This is a slow process that is unsuitable fbr interactive CAD visualizations, because the former two require finite element analysis Faster hardware eases the problem, but does not overcome it, because the algorithms are still too slow. Our MEMS CAD project works towards methods and techniques that are suitable for interactive design, with faster methods. The purpose of this PhD thesis is to contribute to the design of an interactive virtual prototyping of Micro Electro Mechanical Systems (MEMS) This research comprises the analysis of the visualization techniques that are appropriate for these tasks and identifying the difficulties that need to be overcome to be able to offer a MEMS design engineer a meaningful and interactive CAD design environment Such a VR-CAD system is being built in our research group with many participants in the team. Two particular problems are being addressed by presenting algorithms for truthful VR visualization methods: one is for displaying objects that are different in size on the computer screen. The other is modelling unsynchronized motion dynamics, that is different objects moving simultaneously at very high and vety low speed, by proposing stroboscopic simulation to present their dynamics on the screen They require specific size scaling and time scaling and filtering. It is these issues and challenges which make the design of a MEMS CAD tool different from other CAD tools. In the thesis I present algorithms for displaying animated virtual reality for MEMS virtual prototyping in a physically truthful way by using the simulated stroboscopic illumination to filter animated images to make it possible to show unsynchronized motion.. A scaling method was used to show or hide objects which cannot be shown simultaneously on the computer screen because of their large difference in size. The visualization of objects being designed and their animations is done with much consideration of visual perception and computer capability, which is rising attention, but not too often mentioned in the visualization domain.
23
Li, Zhaoyi. "Analysis and Design of Virtual Reality Visualization for a Micro Electro Mechanical Systems (MEMS) CAD Tool." Thesis, Griffith University, 2005. http://hdl.handle.net/10072/366361.
Full textAbstract:
Since the proliferation of CAD tools, visualizations have gained importance.. They provide invaluable visual feedback at the time of design, regardless whether it is fbi civil engineering or electronic circuit design-layout. Typically dynamic visualizations are produced in a two phase process: the calculation of positions and rendering of the image and its presentation as an animated video clip. This is a slow process that is unsuitable fbr interactive CAD visualizations, because the former two require finite element analysis Faster hardware eases the problem, but does not overcome it, because the algorithms are still too slow. Our MEMS CAD project works towards methods and techniques that are suitable for interactive design, with faster methods. The purpose of this PhD thesis is to contribute to the design of an interactive virtual prototyping of Micro Electro Mechanical Systems (MEMS) This research comprises the analysis of the visualization techniques that are appropriate for these tasks and identifying the difficulties that need to be overcome to be able to offer a MEMS design engineer a meaningful and interactive CAD design environment Such a VR-CAD system is being built in our research group with many participants in the team. Two particular problems are being addressed by presenting algorithms for truthful VR visualization methods: one is for displaying objects that are different in size on the computer screen. The other is modelling unsynchronized motion dynamics, that is different objects moving simultaneously at very high and vety low speed, by proposing stroboscopic simulation to present their dynamics on the screen They require specific size scaling and time scaling and filtering. It is these issues and challenges which make the design of a MEMS CAD tool different from other CAD tools. In the thesis I present algorithms for displaying animated virtual reality for MEMS virtual prototyping in a physically truthful way by using the simulated stroboscopic illumination to filter animated images to make it possible to show unsynchronized motion.. A scaling method was used to show or hide objects which cannot be shown simultaneously on the computer screen because of their large difference in size. The visualization of objects being designed and their animations is done with much consideration of visual perception and computer capability, which is rising attention, but not too often mentioned in the visualization domain.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Information and Communication Technology
Full Text
24
Penick, Michael Alan. "VFIRE virtual fire in realistic environments : a framework for wildfire visualization in immersive environments /." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1442845.
Full text
25
Forsberg, Erik. "Interacting with information visualizations in virtual reality : Motion tracked hand controller interaction for common filtering operations in a VR information visualization application." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210043.
Full textAbstract:
As we are heading into immersive virtual reality environments for different purposes - entertainment being the most prominent lately - we should consider how we design interactive information visualizations for VR. Is it wise to hold onto the same elements of interaction with which we are familiar from contemporary web-based interfaces? The study explores this question along with others, to explore ways to conduct familiar filtering operations known from web environments, in VR. An interactive information visualization application in VR was created to evaluate two web-inspired interaction methods used for filtering data. Thirteen users participated in the tests, in which each participant worked through eight predetermined tasks as well as one open-ended task. Qualitative feedback was gathered both through think-alouds during the tasks and in semi-structured interviews when the test had been concluded. Quantitative data was gathered in the application, containing logs of usage statistics. Results show that using web-inspired interaction methods to carry out filtering operations in VR helped the participants to understand the functionality of the interactions. By implementing haptic and visual feedback, natural interactions can be imitated which according to the results of the study generally is perceived as helpful while making the interactions feel more natural. Designing the interaction methods to function like previously known interactions (such as ones found in web interfaces) helped the participants to understand the functionality of the filters.I och med framfarten av VR och dess olika användningsområden – där underhållning gått i bräschen på senare tid – borde vi fundera på hur vi designar interaktiva informationsvisualiseringar för VR. Är det klokt att hålla fast vid samma interaktionselement som vi känner igen från webbaserade gränssnitt? Studien utforskar denna fråga tillsammans med andra, för att utforska sätt att genomföra bekanta filtreringsoperationer som känns igen från webbmiljöer, i VR. En interaktiv informationsvisualiseringsapplikation i VR skapades för att utvärdera två webbinspirerade interaktionsmetoder som användes för att filtrera data. Tretton användare deltog i studien, där varje deltagare tog sig igenom åtta förbestämda uppgifter samt en öppen uppgift. Kvalitativ återkoppling samlades in både via think-alouds under uppgifterna samt i semistrukturerade intervjuer när testet hade avslutats. Kvantitativa data samlades in i applikationen och innehöll användningsstatistik. Resultaten visar att användandet av webbinspirerade interaktionsmetoder för att genomföra filtreringsoperationer i VR hjälpte deltagarna att förstå interaktionens funktionalitet. Genom att implementera haptisk och visuell feedback kan naturliga interaktioner efterliknas, vilket enligt studiens resultat uppfattas som hjälpsamt samtidigt som interaktionerna kändes mer naturliga. Att utforma interaktionsmetoderna för att efterlikna de som återfinns i webbgränssnitt hjälpte deltagarna att förstå filtrens funktionalitet.
26
Ram, Mohan Nethra Mettuchetty. "Emerging technologies in architectural visualization implementation strategies for practice /." Master's thesis, Mississippi State : Mississippi State University, 2003. http://library.msstate.edu/etd/show.asp?etd=etd-04072003-164447.
Full text
27
Wagner, Filho Jorge Alberto. "Evaluating immersive approaches to multidimensional information visualization." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/175082.
Full textAbstract:
O uso de novos recursos de display e interação para suportar a visualização imersiva de dados e incrementar o raciocínio analítico é uma tendência de pesquisa em Visualização de Informações. Neste trabalho, avaliamos o uso de ambientes baseados em HMD para a exploração de dados multidimensionais, representados em scatterplots 3D como resultado de redução de dimensionalidade. Nós apresentamos uma nova modelagem para o problema de avaliação neste contexto, levando em conta os dois fatores cuja interação determina o impacto no desempenho total nas tarefas: a diferença nos erros introduzidos ao se realizar redução de dimensionalidade para 2D ou 3D, e a diferença nos erros de percepção humana sob diferentes condições de visualização. Este framework em duas etapas oferece uma abordagem simples para estimar os benefícios de se utilizar um setup 3D imersivo para um dado conjunto de dados. Como caso de uso, os erros de redução de dimensionalidade para uma série de conjuntos de dados de votações na Câmara dos Deputados, ao se utilizar duas ou três dimensões, são avaliados por meio de uma abordagem empírica baseada em tarefas. O erro de percepção e o desempenho geral de tarefa, por sua vez, são avaliados através de estudos controlados comparativos com usuários. Comparando-se visualizações baseadas em desktop (2D e 3D) e em HMD (3D), resultados iniciais indicaram que os erros de percepção foram baixos e similares em todas abordagens, resultando em benefícios para o desempenho geral em ambas técnicas 3D A condição imersiva, no entanto, demonstrou requerer menor esforço para encontrar as informações e menos navegação, além de prover percepções subjetivas de precisão e engajamento muito maiores. Todavia, o uso de navegação por voo livre resultou em tempos ineficientes e frequente desconforto nos usuários. Em um segundo momento, implementamos e avaliamos uma abordagem alternativa de exploração de dados, onde o usuário permanece sentado e mudanças no ponto de vista só são possíveis por meio de movimentos físicos. Toda a manipulação é realizada diretamente por gestos aéreos naturais, com os dados sendo renderizados ao alcance dos braços. A reprodução virtual de uma cópia exata da mesa de trabalho do analista visa aumentar a imersão e possibilitar a interação tangível com controles e informações bidimensionais associadas. Um segundo estudo com usuários foi conduzido em comparação a uma versão equivalente baseada em desktop, explorando um conjunto de 9 tarefas representativas de percepção e interação, baseadas em literatura prévia. Nós demonstramos que o nosso protótipo, chamado VirtualDesk, apresentou resultados excelentes em relação a conforto e imersão, e desempenho equivalente ou superior em todas tarefas analíticas, enquanto adicionando pouco ou nenhum tempo extra e ampliando a exploração dos dados.The use of novel displays and interaction resources to support immersive data visualization and improve the analytical reasoning is a research trend in Information Visualization. In this work, we evaluate the use of HMD-based environments for the exploration of multidimensional data, represented in 3D scatterplots as a result of dimensionality reduction. We present a new modelling for the evaluation problem in such a context, accounting for the two factors whose interplay determine the impact on the overall task performance: the difference in errors introduced by performing dimensionality reduction to 2D or 3D, and the difference in human perception errors under different visualization conditions. This two-step framework offers a simple approach to estimate the benefits of using an immersive 3D setup for a particular dataset. As use case, the dimensionality reduction errors for a series of roll calls datasets when using two or three dimensions are evaluated through an empirical task-based approach. The perception error and overall task performance are assessed through controlled comparative user studies. When comparing desktop-based (2D and 3D) with an HMD-based (3D) visualization, initial results indicated that perception errors were low and similar in all approaches, resulting in overall performance benefits in both 3D techniques. The immersive condition, however, was found to require less effort to find information and less navigation, besides providing much larger subjective perception of accuracy and engagement. Nonetheless, the use of flying navigation resulted in inefficient times and frequent user discomfort In a second moment, we implemented and evaluated an alternative data exploration approach where the user remains seated and viewpoint change is only realisable through physical movements. All manipulation is done directly by natural mid-air gestures, with the data being rendered at arm’s reach. The virtual reproduction of an exact copy of the analyst’s desk aims to increase immersion and enable tangible interaction with controls and two dimensional associated information. A second user study was carried out comparing this scenario to a desktop-based equivalent, exploring a set of 9 representative perception and interaction tasks based on previous literature. We demonstrate that our prototype setup, named VirtualDesk, presents excellent results regarding user comfort and immersion, and performs equally or better in all analytical tasks, while adding minimal or no time overhead and amplifying data exploration.
28
Elias, Ricardo. "A VIRTUAL REALITY VISUALIZATION OFAN ANALYTICAL SOLUTION TOMOBILE ROBOT TRAJECTORY GENERATIONIN THE PRESENCE OF MOVING OBSTACLES." Master's thesis, University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2438.
Full textAbstract:
Virtual visualization of mobile robot analytical trajectories while avoiding moving obstacles is presented in this thesis as a very helpful technique to properly display and communicate simulation results. Analytical solutions to the path planning problem of mobile robots in the presence of obstacles and a dynamically changing environment have been presented in the current robotics and controls literature. These techniques have been demonstrated using two-dimensional graphical representation of simulation results. In this thesis, the analytical solution published by Dr. Zhihua Qu in December 2004 is used and simulated using a virtual visualization tool called VRML.M.S.E.E.
School of Electrical Engineering and Computer Science
Engineering and Computer Science
Electrical Engineering MSEE
29
Wong, Hgoc-kei, and 黃學麒. "A VR-based information visualization framework for effective perception and cognition in manual material handling system." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hdl.handle.net/10722/210299.
Full text
30
Rodello, Ildeberto Aparecido. "VRMol - um ambiente virtual distribuído para visualização e análise de moléculas de proteínas." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-28052009-101825/.
Full textAbstract:
Este trabalho utiliza conceitos de Realidade Virtual e Sistemas Distribuídos para desenvolver um Ambiente Virtual Distribuído para visualização e análise de moléculas de proteínas, denominado VRMol. O sistema foi implementado com a linguagem Java, incluindo as APls Java 3D e Java RMI, visando permitir que pesquisadores geograficamente dispersos troquem informações de uma maneira rápida e eficiente, acelerando a pesquisa e discussão remotas. Assim, foram desenvolvidos uma interface gráfica com Java 3D e um conjunto de métodos para troca de mensagens de acordo com o modelo de comunicação cliente/servidor, com Java RMI. Além disso, o sistema também permite a utilização de alguns dispositivos de entrada não convencionais como joystick e luvas.This work use the Virtual Reality and the Distributed Systems concepts to develop a Distributed Virtual Environment to visualize and analyze molecules of proteins, called VRMol. The system was implemented with the Java programming language, including the Java 3D and Java RMI APIs, aiming to allow geographically disperse researches exchange information in a quick and efficient way, speeding up the remote research and discussion. Thus, was developed a graphical interface with Java 3D and a set of methods to exchange messages according to a client/server communication model with Java RMI. Furthermore, the system also allows the use of some non-conventional input devices as joysticks and gloves.
31
Rick, Tobias [Verfasser]. "Interactive tracing of radio waves and neuronal fiber pathways for exploratory visualization in virtual reality / Tobias Rick." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2012. http://d-nb.info/1026309298/34.
Full text
32
Yaacoub, Fadi. "Development of virtual reality tools for arthroscopic surgery training." Phd thesis, Université Paris-Est, 2008. http://tel.archives-ouvertes.fr/tel-00481944.
Full textAbstract:
La chirurgie arthroscopique présente actuellement un essor très important pour le bénéfice du plus grand nombre des patients. Cependant, cette technique possède un certain nombre d'inconvénients et il est donc nécessaire pour le médecin de s'entrainer et répéter ses gestes afin de pouvoir exécuter ce type d'opération d'une façon efficace et certaine. En effet, les méthodes traditionnelles d'enseignement de la chirurgie sont basées sur l'autopsie des cadavres et l'entrainement sur des animaux. Avec l'évolution de notre société, ces deux pratiques deviennent de plus en plus critiquées et font l'objet de réglementations très restrictives. Afin d'atteindre un niveau plus élevé, de nouveaux moyens d'apprentissage sont nécessaires pour les chirurgiens. Récemment, la réalité virtuelle commence d'être de plus en plus utilisée dans la médecine et surtout la chirurgie. Les simulateurs chirurgicaux sont devenus une des matières les plus récentes dans la recherche de la réalité virtuelle. Ils sont également devenus une méthode de formation et un outil d'entrainement valable pour les chirurgiens aussi bien que les étudiants en médecine. Dans ce travail, un simulateur de réalité virtuelle pour l'enseignement de la chirurgie arthroscopique, surtout la chirurgie du poignet, a été préesenté. Deux questions principales sont abordées : la reconstruction et l'interaction 3-D. Une séquence d'images CT a été traitée afin de générer un modèle 3-D du poignet. Les deux principales composantes de l'interface du système sont illustrées : l'interaction 3-D pour guider les instruments chirurgicaux et l'interface de l'utilisateur pour le retour d'effort. Dans ce contexte, les algorithmes qui modélisent les objets en utilisant les approches de "Convex Hull" et qui simulent la détection de collision entre les objets virtuels en temps réel, sont présentés. En outre, un dispositif de retour d'effort est utilisé comme une interface haptique avec le système. Cela conduit au développement d'un système à faible coût, avec les mêmes avantages que les appareils professionnels. A cet égard, l'arthroscopie du poignet peut être simulée et les étudiants en médecine peuvent facilement utiliser le système et peuvent apprendre les compétences de base requises en sécurité, flexibilité et moindre coût
33
Ziegeler, Sean Bernard. "Using virtual environments to visualize atmospheric data : can it improve a meteorologist's potential to analyze the information?" Master's thesis, Mississippi State : Mississippi State University, 2002. http://library.msstate.edu/etd/show.asp?etd=etd-04032002-162001.
Full text
34
Ragan, Eric Dennis. "Supporting Learning through Spatial Information Presentations in Virtual Environments." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/23207.
Full textAbstract:
Though many researchers have suggested that 3D virtual environments (VEs) could provide advantages for conceptual learning, few studies have attempted to evaluate the validity of this claim. While many educational VEs share the challenge of providing learners with information within 3D spaces, few researchers have investigated what approaches are used to help learn new information from 3D spatial representations. It is not understood how well learners can take advantage of 3D layouts to help understand information. Additionally, although complex arrangements of information within 3D space can potentially allow for large amounts of information to be presented within a VE, accessing this information can become more difficult due to the increased navigational challenges.Complicating these issues are details regarding display types and interaction devices used for educational applications. Compared to desktop displays, more immersive VE systems often provide display features (e.g., stereoscopy, increased field of view) that support improved perception and understanding of spatial information. Additionally, immersive VE often allow more familiar, natural interaction methods (e.g., physical walking or rotation of the head and body) to control viewing within the virtual space. It is unknown how these features interact with the types of spatial information presentations to affect learning.
The research presented in this dissertation investigates these issues in order to further the knowledge of how to design VEs to support learning. The research includes six studies (five empirical experiments and one case study) designed to investigate how spatial information presentations affect learning effectiveness and learner strategies. This investigation includes consideration for the complexity of spatial information layouts, the features of display systems that could affect the effectiveness of spatial strategies, and the degree of navigational control for accessing information. Based on the results of these studies, we created a set of design guidelines for developing VEs for learning-related activities. By considering factors of virtual information presentation, as well as those based on the display-systems, our guidelines support design decisions for both the software and hardware required for creating effective educational VEs.
Ph. D.
35
Helbig, Carolin. "Concept and Workflow for 3D Visualization of Multifaceted Meteorological Data." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-163901.
Full textAbstract:
The analysis of heterogeneous, complex data sets has become important in many scientific domains. With the help of scientific visualization, researchers can be supported in exploring their research results. One domain, where researchers have to deal with spatio-temporal data from different sources including simulation, observation and time-independent data, is meteorology. In this thesis, a concept and workflow for the 3D visualization of meteorological data was developed in cooperation with domain experts. Three case studies have been conducted based on the developed concept. In addition, the concept has been enhanced based on the experiences gained from the case studies. In contrast to existing all-in-one software applications, the proposed workflow employs a combination of existing software applications and their extensions to make a variety of already implemented visualization algorithms available. The workflow provides methods for data integration and for abstraction of the data as well as for generating representations of the variables of interest. Solutions for visualizing sets of variables, comparing results of multiple simulation runs and results of simulations based on different models are presented. The concept includes the presentation of the visualization scenes in virtual reality environments for a more comprehensible display of multifaceted data. To enable the user to navigate within the scenes, some interaction functionality was provided to control time, camera, and display of objects. The proposed methods have been selected with respect to the requirements defined in cooperation with the domain experts and have been verified with user tests. The developed visualization methods are used to analyze and present recent research results as well as for educational purposes. As the proposed approach uses generally applicable concepts, it can also be applied for the analysis of scientific data from other disciplinesIn nahezu allen Wissenschaftsdisziplinen steigt der Umfang erhobener Daten. Diese sind oftmals heterogen und besitzen eine komplexe Struktur, was ihre Analyse zu einer Herausforderung macht. Die wissenschaftliche Visualisierung bietet hier Möglichkeiten, Wissenschaftler bei der Untersuchung ihrer Forschungsergebnisse zu unterstützen. Eine der Disziplinen, in denen räumlich-zeitliche Daten aus verschiedenen Quellen inklusive Simulations- und Observationsdaten eine Rolle spielen, ist die Meteorologie. In dieser Arbeit wurde in Zusammenarbeit mit Experten der Meteorologie ein Konzept und ein Workflow für die 3D-Visualisierung meteorologischer Daten entwickelt. Dabei wurden drei Fallstudien erarbeitet, die zum einen auf dem erstellten Konzept beruhen und zum anderen durch die während der Fallstudie gesammelten Erfahrungen das Konzept erweiterten. Der Workflow besteht aus einer Kombination existierender Software sowie Erweiterungen dieser. Damit wurden Funktionen zur Verfügung gestellt, die bei anderen Lösungsansätzen in diesem Bereich, die oft nur eine geringere Anzahl an Funktionalität bieten, nicht zur Verfügung stehen. Der Workflow beinhaltet Methoden zur Datenintegration sowie für die Abstraktion und Darstellung der Daten. Es wurden Lösungen für die Visualisierung einer Vielzahl an Variablen sowie zur vergleichenden Darstellung verschiedener Simulationsläufe und Simulationen verschiedener Modelle präsentiert. Die generierten Visualisierungsszenen wurden mit Hilfe von 3D-Geräten, beispielsweise eine Virtual-Reality-Umgebung, dargestellt. Die stereoskopische Projektion bietet dabei die Möglichkeit, diese komplexen Daten mit verbessertem räumlichem Eindruck darzustellen. Um dem Nutzer eine umfassende Analyse der Daten zu ermöglichen, wurden eine Reihe von Funktionen zur Interaktion zur Verfügung gestellt, um beispielsweise Zeit, Kamera und die Anzeige von 3D-Objekten zu steuern. Das Konzept und der Workflow wurden entsprechend der Anforderungen entwickelt, die zusammen mit Fachexperten definiert wurden. Des Weiteren wurden die Anwendungen in verschiedenen Entwicklungsstadien durch Nutzer getestet und deren Feedback in die Entwicklung einbezogen. Die Ergebnisse der Fallstudien wurden von den Wissenschaftlern benutzt, um ihre Daten zu analysieren, sowie diese zu präsentieren und in der Lehre einzusetzen. Da der vorgeschlagene Workflow allgemein anwendbare Konzepte beinhaltet, kann dieser auch für die Analyse wissenschaftlicher Daten anderer Disziplinen verwendet werden
36
Nevalainen, Susanna. "A Comparative Study of Monitoring Data Center Temperature Through Visualizations in Virtual Reality Versus 2D Screen." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-233132.
Full textAbstract:
Due to constantly increasing amount of data, the need for more efficient data center management solutions has increased dramatically. Approximately 40% of the costs for data centers is associated with cooling, making temperature management of data centers vital for data center profitability, performance, and sustainability. Current data center hardware management software lack a visual and contextual approach to data center monitoring, overlooking the hierarchical and spatiotemporal data structures of data center data in its design. This study compared two potential data center temperature visualizations — 3D visualization in virtual reality (VR) and 2D visualization on 2D screen — in terms of time to task completion, accuracy rate, and user satisfaction. Results of a within-subject user study with 13 data center specialists indicated that users perceived three-dimensional data center racks and devices more efficiently in VR than in a 2D visualization, whereas a two-dimensional graph was interpreted more efficiently and accurately on a 2D screen. The user satisfaction of both implemented visualizations scored over 80 in a System Usability Scale (SUS) survey, showing that the implemented visualizations have significant potential to improve data center temperature management.På grund av den ständigt ökande mängden av data, har behovet till effektivare datacenterhanteringslösningar ökat dramatiskt. Cirka 40% av kostnaderna för datacentrar används till kylning, vilket gör temperaturhanteringen till en kritisk del av datacentrets lönsamhet, prestanda och hållbarhet. Nuvarande datacenterhanteringsprogramvaror saknar visuella och kontextuella tillvägagångssätt för datacenterövervakning och förbiser de hierarkiska och spatiotemporala datastrukturerna för datacenterdata i programvarudesign. Denna studie jämförde två potentiella datacentertemperaturvisualiseringar — en tredimensionell visualisering i virtuell verklighet (VV) och en tvådimensionell visualisering på en 2D skärm — i jämförelsen beaktas tid till uppgiftens slutförande, antalet riktiga svar och tillfredsställelse av användaren. Resultatet av användarstudien med 13 datacenterspecialister antydde att användare uppfattar tredimensionellaelektronikrack och enheter snabbare i VV än med 2D-visualisering, medan en tvådimensionell graf tolkas snabbare och noggrannare på en 2D skärm. Användartillfredsställelse av båda visualiseringarna fick över 80 poäng i SUS mätningen, vilket antyder att de genomförda visualiseringarna har en stor potential för att förbättra datacentertemperaturhanteringen.
37
Fontaeus, Oliwer. "Virtual Reality i planering : Ett kompletterande underlag för ungdomars förståelse av plankartor." Thesis, Högskolan i Gävle, Samhällsbyggnad, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-30995.
Full textAbstract:
Många medborgare har ibland svårigheter med att förstå delar av detaljplaner och plankartor som presenteras av Sveriges kommuner. Det presenterade materialet kan uppfattas som komplex och det krävs ibland god kunskap inom området för att fullt förstå sig på detaljplaner. I samband med detta står även kommuner inför svårigheter när det kommer till att locka till sig flera medborgare till medborgardialoger. Ungdomar är speciellt underrepresenterade i medborgardeltagande och vissa anser till och med att deras röst inte blir hörd (Alinazari & Alvinder, 2018). I syfte till att öka medborgardeltagande och förståelse för detaljplaner finns det idag flera tillvägagångssätt som kommuner kan använda sig av. Detta kan vara allt från 3D-visualiseringar till att använda Virtual Reality (VR). I vissa fall går det även att använda mobiltelefonen för att använda VR. Användningen av VR är väldigt nyligen etablerat och det är idag endast ett fåtal kommuner som använder sig av det. Många kommuner känner inte till möjligheterna med VR eller har varken kunskap eller möjlighet till att använda det. Genom att etablera smartphone-VR kan medborgare i alla åldrar, med fokus på ungdomar i studien ta del av visualiseringar och VR-material var som helst och när som helst. Den här studien testade hur smartphone-VR kan användas som ett kompletterande visualiseringsunderlag för detaljplaner tillsammans med andra visualiseringsformer med hjälp av programvaran Juxtapose (2019). Tillhandahållandet av smartphone-VR presenterades med hjälp av online tjänsten RoundMe (2019). De visualiserade modellerna skapades i Sketchup. Vilket är ett visualiseringsprogram som både är lättillgängligt och idag brukas av många kommuner. Frågor om det visuella innehållet ställdes i en enkät som deltagarna fick besvara. Statistiken som alstrades av enkäterna sammanställdes med enkel linjär regressionsanalys. Detta möjliggjorde undersökandet ifall det fanns en statistisk signifikans mellan de besvarade frågorna i enkäten. Även ifall det fanns något samband mellan upplevd förståelse och faktisk förståelsen för det presenterade materialet. Deltagarna i studien får även rangordna den egna uppfattade förståelsen för det presenterade materialet. Den faktiska förståelsen mättes utifrån deltagarnas enkätsvar. Med hjälp av de besvarade enkäterna visade det sig att det fanns en delvis ökande förståelse för detaljplaner med hjälp av Juxtapose och smartphone-VR som komplement. Den största implikationen av resultatet var att personer med bakgrund inom samhällsbyggnade hade lägst faktisk förståelse för det presenterade visualiseringarna. Implementeringen av detta i praktiken kan därför vara en genomförbar lösning till att öka ungdomars förståelse för detaljplaner. Implementeringen behöver inte bara innebära att ungdomars förtåelse ökar utan även att det kan locka flera medborgare till att delta i medborgardialoger.A lot of Swedish citizens struggle to understand parts of detailed development plans when they are presented by Municipalities. The presented material can at often times be seen as difficult to understand and previous knowledge regarding development plans are usually needed to fully understand them. In occurrence with this, Swedish municipalities find themselves struggling in order to attract participants to public participation events regarding upcoming development plans. Today’s youth is especially difficult to attract and also integrate into planning dialogue events and are thus greatly underrepresented and some youth even feel like their voice goes unheard (Alinazari & Alvinder, 2018). In order to change this downgrade in citizens dialogue attendance, and to increase citizens knowledge regarding detailed development plans, municipalities could use a couple of new techniques. These techniques range from the use of 3D-renderings to using Virtual Reality (VR), which also in some cases could be used with the help smartphones. The use of VR is although a pretty fresh establishment to the market which means that there’s only a few municipalities who actually established it as part of their citizens dialogue techniques. The majority of Sweden's municipalities don’t even know that it is possible to use VR in citizens dialogue nor have the knowledge of how to use it. By implementing smartphone based VR with a sharp focus on youth, they would be able to take part of 3D/VR based development plans anywhere at any time. This study aimed to test how smartphone based VR could be used as a complementary visualization material to development plans with the help of other visualizations such as the software Juxtapose. The provision of smartphone based VR was handed out with the help of an online service called RoundMe (2019), which took part in this study. The visualized material which were present in the study had been made with Sketchup. A software which not only is easy to access but also widely used by Sweden's municipalities. Questions regarding the different visualizations was handed out through a questionnaire. The summed up statistics was then analysed with the help of simple linear regression analysis. The participants were also able to rank their own understanding of the presented material. The actual representation of their knowledge was analysed with the help of their answers from the questionnaire. The result of the study could with the help of the answered questionnaires be analysed and the answered that followed was that the complementary use of visualized material and VR could actually increase the understanding of development plans. The biggest noted implication during the study was that participants with a urban planning background had the lowest actual knowledge of the presented visualizations. The implementation of this could thus be of viable use when it comes to improving on younger people's understanding of development plans. And also mean that other societal groups learning would improve and interest more people to attend at public consultation events.
38
Ospina, Eslava David Mauricio, and Avendaño Flores Santiago. "Virtual Commissioning of Robotic Cell Using Cloud-based Technologies and Advanced Visualization System." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-19793.
Full textAbstract:
The manufacturing industry is quickly adapting to new technologies. Some of these trending technologies are virtual commissioning, virtual reality, and cloud-based technologies. This project summarizes these three technologies and aims to create a commissioning tool adapted to the 4.0 Industry. The project’s methodology was to analyse a problem and consequently create a solution that solves it. The process of designing and developing was repeated iteratively, each time an evaluation was made. The final product developed has shown that it is worth spending time introducing the cloudbased technologies inside many applications since it saves time and allows to work remotely. Applying virtual reality to virtual commissioning has proven to add efficiency. At the same time, it gives an immersive experience with a real-time display of quantitative data and the process itself in a visual mode without interfering with the actual production. With these two technologies, virtual commissioning evolves and goes a step further. This project also proved that the user experience and interface in this type of immersive applications need much attention on creating a comfortableinterface that does not fatigue or cause rejection in the user.
39
Nugraha, Bahar Yudi. "Representation of thermal building simulation in virtual reality for sustainable building." Thesis, Dijon, 2014. http://www.theses.fr/2014DIJOS016/document.
Full textAbstract:
La sobriété énergétique du bâti devient aujourd’hui un élément clé en phase de conception. L’intégration en amont d’outils numériques, notamment la réalité virtuelle (RV). Nous a conduit, dans cette recherche, à nous concentrer sur les résultats de simulations thermiques visualisées dans un environnement virtuel. La contribution est portée sur la représentation et la perception dans un EV de ces données issues de simulation. Nous nous limitons à la caractérisation de l’efficacité énergétique en processus de conception. Cette étude vise la prédiction des performances thermiques dans des systèmes de réalité virtuelle. Les problématiques de formats de données et de flux de travail entre la modélisation classique CAO (Conception Assistée par Ordinateur), les simulations thermiques, et la visualisation immersive sont également traitées. Il existe plusieurs outils logiciels dédiés à la représentation de simulations thermiques en EV et le premier enjeu de ces travaux fut de sélectionner l’outil approprié. De nombreux modeleurs CAO, logiciels de simulation thermique et outils de RV sont disponibles ; ils diffèrent notamment par leurs approches (fonctionnalités et environnement logiciel). La problématique d’interopérabilité (formats d’échange entre les outils logiciels) requiert de bâtir un flux de travail structuré. Les difficultés d’intégration entre outils CAO et outils de simulation, et les barrières au transfert vers des systèmes de réalité virtuelle sont également décrits. Il est apparu pertinent d'utiliser le Building Information Model (BIM) de plus en plus utilisé parmi les acteurs de l’architecture, ingénierie et construction (AIC). Puis nous avons poursuivi par l’évaluation des tendances actuelles en matière de représentation de données thermiques issues de simulation dans un EV, par la création de méthode de transfert de données de sorte à les intégrer au flux de travail. Après un état de l’art sur la simulation thermique et une évaluation des travaux connexes, nous décrivons l'application, la méthode et les outils pour parvenir à nos objectifs. Une proposition de procédé de transfert de données et de présentation de données en EV est formulée et évaluée. Le flux d’échanges de données s’effectue en trois phases, de sorte à optimiser les passages entre la CAO, le calcul thermique et la réalité virtuelle. La représentation des données dans l’EV est réalisée grâce à une visualisation immersive et interactive. Une expérimentation a été conduite de sorte à évaluer des sujets : Le scénario consistait en une visualisation interactive de données thermiques selon 4 modalités en environnement virtuel. L’interface développée pour l’interaction a été voulue intuitive et conviviale. L’application contient un modèle 3D réaliste du projet (salle Gunzo) dans deux configurations : état actuel et état rénové. Les données thermiques sont restituées selon plusieurs métaphores de représentation. L’expérimentation développe une approche qui associe au scénario de rénovation virtuelle une configuration matérielle/logicielle. Les résultats obtenus se concentrent sur la visualisation, l'interaction et le retour subjectif des utilisateurs. Quatre métaphores de visualisation sont testées et leur évaluation porte notamment sur deux critères : leurs capacités à restituer les résultats de simulation thermique ; le degré d’interaction et la perception de l’utilisateur des impacts de ses actions. L’évaluation subjective révèle les préférences des utilisateurs et montre que les métaphores de représentation ont une influence sur la précision et l’efficience de l’interprétation des données. Ces travaux montrent que les techniques de représentation et de visualisation de données de simulation ont un effet sur la pertinence de leur interprétation. La méthode décrite spécifie les modalités de transfert de la donnée depuis la phase conception jusqu’aux outils et systèmes de RV. Sa souplesse lui permet d’être transposée à tout type de projet (…)The importance of energy efficiency as well as integration of advances in sustainable buildingdesign and VR technology have lead this research to focus on thermal simulation results visualized in avirtual environment (VE). The emphasis is on the representation of thermal building simulation (TBS)results and on the perception of thermal data simulated in a VE. The current application of the designprocess through energy efficiency in VR systems is limited mostly to building performance predictionsand design review, as the issue of the data formats and the workflow used for 3D modeling, thermalcalculation and VR visualization.Different applications and tools involved to represent TBS in VE are become the challenge ofthis work. Many 3D modeller, thermal simulation tools and VR tools are available and they are differ intheir function and platform. Issues of data format exchange, appropriate tools and equipments from thissituation require an interoperability solution that needs to be structured in a workflow method.Significances and barriers to integration design with CAD and TBS tools are also outlined in order totransfer the model to VR system. Therefore, the idea then is to use Building Information Model (BIM)extensively used in Architecture, Engineering and Construction (AEC) community. It then continued toevaluate the current trends for TBS representation in VE, to create data transfer method, and tointegrate them in the workflow. After a review in thermal simulation and an evaluation of related works,we specify the application, method and tools for our objectives.An application of a method of data transfer and presentation of data in VE are formulated andtested. This effort conduct using a specific data workflow which performed the data transfer through 3phases. This relies on the smooth exchange of data workflow between CAD tools, thermal calculationtools and VR tools. Presentation of data in VE is conducted through immersive visualization andintuitive interaction. An experiment scenario of a thermal simulation in VR system was created tointeractively visualize the results in the immersion room and tested by some respondents. The systeminclude with friendly interface for interaction. It presents a realistic 3D model of the project (Gunzoroom) in existing condition and renovated version, and their TBS results visualized in somevisualization metaphor. In the experiment, the method which bundled in an application brings togetherwithin a couple of virtual scenario and a software/hardware solution. The obtained results concentrateon visualization, interaction and its feedback. Some visualization metaphor are tested and evaluated topresent more informative TBS results where the user can interact and perceive the impact of theiraction.Evaluation of the application prototype showed various levels of user satisfaction, andimprovements in the accuracy and efficiency of data interpretation. The research has demonstrated it ispossible to improve the representation and interpretation of building performance data, particularly TBSresults using visualization techniques. Using specific method, the data flow that starts from the designprocess is completely and accurately channelled to the VR system. The method can be used with anykind of construction project and, being a flexible application, accepts new data when necessary,allowing for a comparison between the planned and the constructed
40
Hunsberger, Michael G. "3D visualization of tactical communications for planning and operations using Virtual Reality Modeling Language (VRML) and Extensible 3D (X3D)." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA393819.
Full textAbstract:
Thesis (M.S. in Systems Technology, Joint C3 Systems, M.S. in Computer Science) Naval Postgraduate School, June 2001.Thesis advisors, Dan Brutzman, Dave Laflam, Dan Boger. Includes bibliographical references (p. 267-270). Also Available online.
41
Pouke, M. (Matti). "Augmented virtuality:transforming real human activity into virtual environments." Doctoral thesis, Oulun yliopisto, 2015. http://urn.fi/urn:isbn:9789526208343.
Full textAbstract:
Abstract The topic of this work is the transformation of real-world human activity into virtual environments. More specifically, the topic is the process of identifying various aspects of visible human activity with sensor networks and studying the different ways how the identified activity can be visualized in a virtual environment. The transformation of human activities into virtual environments is a rather new research area. While there is existing research on sensing and visualizing human activity in virtual environments, the focus of the research is carried out usually within a specific type of human activity, such as basic actions and locomotion. However, different types of sensors can provide very different human activity data, as well as lend itself to very different use-cases. This work is among the first to study the transformation of human activities on a larger scale, comparing various types of transformations from multiple theoretical viewpoints. This work utilizes constructs built for use-cases that require the transformation of human activity for various purposes. Each construct is a mixed reality application that utilizes a different type of source data and visualizes human activity in a different way. The constructs are evaluated from practical as well as theoretical viewpoints. The results imply that different types of activity transformations have significantly different characteristics. The most distinct theoretical finding is that there is a relationship between the level of detail of the transformed activity, specificity of the sensors involved and the extent of world knowledge required to transform the activity. The results also provide novel insights into using human activity transformations for various practical purposes. Transformations are evaluated as control devices for virtual environments, as well as in the context of visualization and simulation tools in elderly home care and urban studiesTiivistelmä Tämän väitöskirjatyön aiheena on ihmistoiminnan muuntaminen todellisesta maailmasta virtuaalitodellisuuteen. Työssä käsitellään kuinka näkyvästä ihmistoiminnasta tunnistetaan sensoriverkkojen avulla erilaisia ominaisuuksia ja kuinka nämä ominaisuudet voidaan esittää eri tavoin virtuaaliympäristöissä. Ihmistoiminnan muuntaminen virtuaaliympäristöihin on kohtalaisen uusi tutkimusalue. Olemassa oleva tutkimus keskittyy yleensä kerrallaan vain tietyntyyppisen ihmistoiminnan, kuten perustoimintojen tai liikkumisen, tunnistamiseen ja visualisointiin. Erilaiset anturit ja muut datalähteet pystyvät kuitenkin tuottamaan hyvin erityyppistä dataa ja siten soveltuvat hyvin erilaisiin käyttötapauksiin. Tämä työ tutkii ensimmäisten joukossa ihmistoiminnan tunnistamista ja visualisointia virtuaaliympäristössä laajemmassa mittakaavassa ja useista teoreettisista näkökulmista tarkasteltuna. Työssä hyödynnetään konstrukteja jotka on kehitetty eri käyttötapauksia varten. Konstruktit ovat sekoitetun todellisuuden sovelluksia joissa hyödynnetään erityyppistä lähdedataa ja visualisoidaan ihmistoimintaa eri tavoin. Konstrukteja arvioidaan sekä niiden käytännön sovellusalueen, että erilaisten teoreettisten viitekehysten kannalta. Tulokset viittaavat siihen, että erilaisilla muunnoksilla on selkeästi erityyppiset ominaisuudet. Selkein teoreettinen löydös on, että mitä yksityiskohtaisemmasta toiminnasta on kyse, sitä vähemmän tunnistuksessa voidaan hyödyntää kontekstuaalista tietoa tai tavanomaisia datalähteitä. Tuloksissa tuodaan myös uusia näkökulmia ihmistoiminnan visualisoinnin hyödyntämisestä erilaisissa käytännön sovelluskohteissa. Sovelluskohteina toimivat ihmiskehon käyttäminen ohjauslaitteena sekä ihmistoiminnan visualisointi ja simulointi kotihoidon ja kaupunkisuunnittelun sovellusalueilla
42
BUG, DANIEL. "Oculus Rift Control of a Mobile Robot : Providing a 3D Virtual Reality Visualization for TeleoperationorHow to Enter a Robots Mind." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-153959.
Full textAbstract:
Robots are about to make their way into society. Whether one speaksabout robots as co-workers in industry, as support in hospitals, in elderlycare, selfdriving cars, or smart toys, the number of robots is growing continuously.Scaled somewhere between remote control and full-autonomy,all robots require supervision in some form. This thesis connects theOculus Rift virtual reality goggles to a mobile robot, aiming at a powerfulvisualization and teleoperation tool for supervision or teleassistance,with an immersive virtual reality experience. The system is tested ina user study to evaluate the human-robot interaction and obtain anintuition about the situation awareness of the participants.
43
Färber, Markus, Johannes Ghiletiuc, Peter Schwarz, and Beat Brüderlin. "Echtzeit-Visualisierung von sehr großen Virtual- und Augmented-Reality-Szenen auf Smartphones und mobilen Tablet-Computern." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-228216.
Full textAbstract:
Aus der Einleitung:
"Klassische VR/AR-Ausgabegeräte sind meist kopfgetragene Systeme oder 3D-Projektionsanlagen. In bestimmten Anwendungsfällen, zum Beispiel in der Wartung (Schreiber 2011) oder auch in Bauplanung und Bauausführung (Woodward 2011), verbieten sich diese Geräte aufgrund von Arbeitsschutzbestimmungen oder widrigen Einsatzbedingungen. Hier bieten sich Smartphones oder auf ähnlicher Technologie arbeitende Tablett-Computer als Alternative an, insbesondere dann, wenn stereoskopische Darstellung nicht benötigt wird."
44
Albracht, Ryan. "Visualizing urban development: improved planning & communication with 3D interactive visualizations." Kansas State University, 2016. http://hdl.handle.net/2097/32631.
Full textAbstract:
Master of Landscape ArchitectureDepartment of Landscape Architecture/Regional and Community Planning
Brent Chamberlain
3D interactive visualizations can communicate complex urban design ideas to communities to improve planning (Bertol & Foell, 1997; Bishop et al., 2008; Griffon et al., 2011; Lange & Bishop, 2005). Unfortunately, many landscape architects, urban designers, and city planners currently re-frame from using such gaming technology capable of creating 3D interactive visualizations (Deane, 2015a). Many firms use verbal descriptions with images. This method is insufficient for facilitating feedback (Bratteteig & Wagner, 2010; Gordon, et al, 2010; Stakeholder Engagement, 2009; Zhang, 2004). According to Lange and Bishop (2005) there is no reason why real-time visualizations should not be used in urban design. Design fields will be moving toward procedural modeling software that is code-based to quickly model urban development (Flachbart & Weibel, 2005). However, this type of software, i.e., ESRI CityEngine, is only being used by approximately 10% of firms (Deane, 2015a). This paper is one of the first to analyze how ESRI CityEngine can be used and improved to support the workflow of landscape architects, urban designers, and planners for urban development projects. The project explored ESRI CityEngine’s procedural modeling and metric capabilities, and how it could be used to visualize a proposed Urban Core Residential District in Manhattan, Kansas. This process involved applying CGA (computer generated architecture) rules to GIS data, to model trees, streetscapes, landscapes, and buildings. Visuals that were produced include a CityEngine Web Scene and a Unity game.
45
Ban, Hyowon. "Visualization Of Urban Concepts In Two Directions Of Thinking." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1249306949.
Full text
46
Färber, Markus, Johannes Ghiletiuc, Peter Schwarz, and Beat Brüderlin. "Echtzeit-Visualisierung von sehr großen Virtual- und Augmented-Reality-Szenen auf Smartphones und mobilen Tablet-Computern." TUDpress - Verlag der Wissenschaften GmbH, 2012. https://tud.qucosa.de/id/qucosa%3A30500.
Full textAbstract:
Aus der Einleitung:
"Klassische VR/AR-Ausgabegeräte sind meist kopfgetragene Systeme oder 3D-Projektionsanlagen. In bestimmten Anwendungsfällen, zum Beispiel in der Wartung (Schreiber 2011) oder auch in Bauplanung und Bauausführung (Woodward 2011), verbieten sich diese Geräte aufgrund von Arbeitsschutzbestimmungen oder widrigen Einsatzbedingungen. Hier bieten sich Smartphones oder auf ähnlicher Technologie arbeitende Tablett-Computer als Alternative an, insbesondere dann, wenn stereoskopische Darstellung nicht benötigt wird."
47
Augste, Jan. "Využití technologie virtuální reality k monitoringu a vizualizaci vybraných provozních vlastností stroje a jejich analýze." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-319154.
Full textAbstract:
This dissertation deals with the study of the use of virtual technologies for an analysis of operating characteristics of a machine. Operating characteristics of a machine are parameters that determine the usability of the machine to accomplish a certain task in addition to the specified time and under the certain conditions. These include parameters that can be changed based on customer requirements, for example, the table size and the highest spindle speed to the parameters influenced from the start of the machine design such as positioning accuracy, acceleration value in the axes or consumption. The first part sets out general requirements for visualization of information and these are subsequently verified experimentally in the chapter devoted to the time visualization protocol. This thesis presents the original experiments to determine the basic requirements for visualization of a measured quantity, in this case the feed rate. By verifying usability when displaying these properties on the underlying data showing machine position change, the four basic requirements for visual data processing using immerse virtual reality are validated. A deeper insight into the work with data will enable to analyse more complicated relations within a longer period, greater transparency and clearer outputs of analysis.
48
Rajashekar, Raksha. "Speech Enabled Navigation in Virtual Environments." Wright State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1567554934550569.
Full text
49
Rosante, Júnior César [UNESP]. "Proposta de uma ferramenta de visualização e realidade virtual para o monitoramento de tráfego de redes de computadores." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/98695.
Full textAbstract:
Made available in DSpace on 2014-06-11T19:29:40Z (GMT). No. of bitstreams: 0
Previous issue date: 2011-07-01Bitstream added on 2014-06-13T19:59:32Z : No. of bitstreams: 1
rosante_jc_me_sjrp.pdf: 1765226 bytes, checksum: bfc3f77e8d33f9654175566f55540d84 (MD5)O crescimento das redes de computadores e telecomunicações assim como do número de dispositivos conectados a essas provoca um aumento expressivo da quantidade de tráfego de dados gerando maior dificuldade no seu gerenciamento e demandas crescentes da necessidade de prover segurança dos dados e continuidade dos serviços de rede prestados pelas instituições. Existem ferramentas para auxiliar no trabalho de monitoramento de redes como o Tcpdump e o Snort. Este auxilia no trabalho de detecção e bloqueio de tráfegos maliciosos como portscans e ataques de denial of services (DoS) através da análise de tráfego por verificação de assinaturas e padrões. Ainda que sejam de suma importância, ferramentas deste tipo descartam a capacidade cognitiva do ser humano de aprendizado e reconhecimento de padrões. Para contornar essa carência e aproveitar a capacidade de cognição visual humana, este trabalho propõe o uso de conceitos de Realidade Virtual aliados a Visualização de Informação na implementação de uma ferramenta de visualização de informações. Esta deve apresentar os dados brutos do tráfego da rede através de novas perspectivas e metáforas visuais utilizando as técnicas de Realidade Virtual com suas características de imersão, interação e envolvimento em um espaço sintético tridimensional. A representação do tráfego de rede através de metáforas visuais pela ferramenta desperta o senso cognitivo do administrador de redes possibilitando a identificação de tráfego anômalo e de comportamentos estranhos. A ferramenta deve fornecer possibilidades de configurações para exibir diferentes aspectos do tráfego servindo tanto para auxílio administrativo de comportamentos dos usuários quanto para análise e detecção de acessos maliciosos
The growth of computer networks and telecommunications as well as the number of devices connected to these causes a significant increase in the amount of data traffic generating greater difficulty in its management and growing demands on the need to provide data security and continuity of network services provided institutions. There are tools to assist in the work of monitoring networks such as Tcpdump and Snort. This helps in detecting and blocking malicious traffic and attacks such as portscans and denial of service (DoS) attacks by analyzing traffic for verification of signatures and patterns. Though they are very important, tool of this type discard the cognitive capacity of human learning and pattern recognition. To address this need and the ability to take advantage of human visual cognition, this work proposes the use of concepts of Virtual Reality to Information Visualization in the implementation of an information visualization tool. This should provide the raw data of network traffic through new perspectives and visual metaphors using Virtual Reality techniques to their characteristics of immersion, interaction and involvement in a synthetic three-dimensional space. The representation of network traffic through visual metaphors for the cognitive tool awakens the sense of enabling network administrators to identify anomalous traffic and strange behavior. The tool should give you plenty of settings to display different aspects of traffic serving both to assist administrators and users' behavior for analysis and detection of malicious access
50
Robertson, Cindy Marie. "Using Graphical Context to Reduce the Effects of Registration Error in Augmented Reality." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19775.
Full textAbstract:
An ongoing research focus in Augmented Reality (AR) is to improve tracking and display technology in order to minimize registration errors between the graphical display and the physical world. However, registration is not always necessary for users to understand the intent of an augmentation, especially in situations where the user and the system have shared semantic knowledge of the environment. I hypothesize that adding appropriate graphical context to an augmentation can ameliorate the effects of registration errors. I establish a theoretical basis supporting the use of context based on perceptual and cognitive psychology.
I introduce the notion of Adaptive Intent-Based Augmented Reality (i.e. augmented reality systems that adapt their augmentations to convey the correct intent in a scene based on an estimate of the registration error in the system.) I extend the idea of communicative intent, developed for desktop graphical explanation systems by
Seligmann and Feiner (Seligmann &Feiner, 1991), to include graphical context cues, and use this as the basis for the design of a series of example augmentations demonstrating the concept. I show how semantic knowledge of a scene and the intent of an augmentation can be used to generate appropriate graphical context that counters the effects of registration error.
I evaluate my hypothesis in two user studies based on a Lego block-placement task. In both studies, a virtual block rendered on a head-worn display shows where to place the next physical block. In the first study, I demonstrate that a user can perform the task effectively in the presence of registration error when graphical context is included. In the second, I demonstrate that a variety of approaches to displaying graphics outside the task space are possible when sufficient graphical context is added.