Dissertations / Theses on the topic 'Graphics, augmented reality and games'
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Tokunaga, Daniel Makoto. "Técnicas de reconstrução e renderização de vídeo-avatares para educação e jogos eletrônicos." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-20082010-161313/.
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Propiciar uma boa experiência de imersão ao usuário, quando este interage com conteúdos ou ambientes virtuais, é um dos principais desafios dos desenvolvedores e pesquisadores de tecnologias interativas, com destaque para realidade virtual e aumentada. Em especial nas áreas de educação e entretenimento, nas quais o engajamento do usuário e a significância dos conteúdos são cruciais para o sucesso da aplicação, é comum a busca por uma experiência que se aproxime de uma imersão total do participante. Quando as atividades envolvem interações a distância, um possível meio de se obter maior imersão são os chamados sistemas de telecomunicação imersiva. Tais sistemas oferecem compartilhamento de um ambiente virtual e troca de informações entre participantes remotos, além da interação desses com o ambiente. Um componente importante desses sistemas é o vídeo-avatar, uma representação visual do participante dentro do ambiente, baseado em sua captura de vídeo em tempo-real. Este trabalho apresenta novas propostas de reconstrução geométrica e renderização para a geração e apresentação de um vídeo-avatar. Inicialmente, um modelo teórico para se modularizar as técnicas de reconstrução e renderização existentes foi proposto. Por meio desse modelo foi criada uma nova técnica de reconstrução geométrica e renderização, denominada Video-based Microfacet Billboarding. Essa técnica emprega uma reconstrução e renderização em tempo-real que possibilita a representação de detalhes e melhora a percepção de integração com o ambiente. É também proposta neste trabalho o conceito de non-photorealistic video-avatar, que visa aplicar um estilo não fotorrealístico único sobre toda a cena, afim de melhorar a integração do avatar com o ambiente e, por sua vez, aumentar a imersão do usuário. Os resultados obtidos através da implementação do vídeo-avatar com essas técnicas e testes preliminares com usuários dão fortes indícios de que é possível a geração de uma representação visual que possua todos os requisitos do sistema iLive, sistema de telecomunicação imersiva voltado a educação e jogos eletrônicos em desenvolvimento pelo Laboratório de Tecnologias Interativas (Interlab) da Escola Politécnica da Universidade de São Paulo.Providing good immersion experiences for users interacting with virtual contents or an environment is one of the main challenges for developers and researchers in interactive technologies, mainly virtual and augmented reality. Especially in areas of education and entertainment, in which the engagement of the user and the significance of content are of crucial importance for the success of the application, the search for experiences that approximate to one of a total immersion of the participant is common practice. When interaction at distance is necessary, one way to provide better immersion experiences is the use of a solution called Immersive Telecommunication System. This kind of system can provide the sharing of the virtual environment among participants, information exchange among them, and also their interaction with the virtual environment. One of the most important component of these systems is the video-avatar, the representation of the participant in the virtual environment based on a video of the participant captured in real-time. This work presents new approaches of geometric reconstruction and rendering for the creation of a video-avatar. First, a theoretical model to modularize the existing reconstruction and rendering approaches was proposed. Based on this model, a new approach of geometric reconstruction and rendering, called Video-based Microfacet Billboarding, was conceived. This approach uses a technique of real-time reconstruction and rendering that enables the representation of the object details and improves the integration of the avatar in the virtual environment. In this work, it is also proposed the concept of non-photorealistic video-avatar, that aims to apply a non-photorealistic style over all the scene to improve the avatar integration with the environment, and with this, to enhance the user\'s immersion. The results obtained by the implementation of a video-avatar with these approaches, as well as preliminary users tests, gives us strong evidences that we could create a user representation that attends all the requisites of the iLive system, an immersive telecommunication system for education and gaming purposes, in development by the Interactive Technologies Laboratory (Interlab) of Escola Politécnica da Universidade de São Paulo.
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Rösler, Amanda. "Augmented Reality Games on the iPhone." Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3255.
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Augmented reality opens up a lot of possibilities for new types of games, where the real and the virtual world are mixed. Despite this, augmented reality games are still not very common, probably due to the fact that head-mounted displays (which are often used for augmented reality) are expensive. However, in recent years mobile phones have become more and more powerful, and since many of them have built-in cameras and rather large screens, they are a potential platform for augmented reality games. This thesis explores some of the problems and possibilities associated with the creation of augmented reality games for the Apple iPhone. In order to do that, a multi-player augmented reality game for the iPhone was implemented, and then a number of performance tests and a user study were conducted. The most important conclusion that was reached is that performance is a definite problem when creating augmented reality games for the iPhone.Augmented reality (förstärkt/utökad verklighet) öppnar upp nya möjligheter för spel där den virtuella världen kombineras med den verkliga. Trots detta så finns det inte många augmented reality-spel tillgängliga, vilket kan bero på att head-mounted displays (som ofta använda till augmented reality) är dyra och inte särskilt lätt att få tag på. Mobiltelefoner är däremot väldigt lättillgängliga och de senaste åren har de blivit mer och mer kraftfulla. Eftersom många av dem dessutom har inbyggda videokameror och relativt stora skärmar, så har mobiltelefoner blivit en potentiell plattform för augmented reality-spel. Denna rapport utforskar några av de problem och möjligheter som är associerade med skapandet av augmented reality-spel för Apples mobiltelefon, iPhone. Ett multi-player augmented reality-spel implementerades för iPhone, och sedan genomfördes ett antal prestanda-tester och en användarstudie. Den viktigaste slutsatsen som drogs var att prestanda är ett stort problem när man skapar augmented reality-spel för iPhone.
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Laurendi, Joseph Michael. "Augmented reality games : improved data layers." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/66436.
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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2011.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 73-74).
The Scheller Teacher Education Program has been developing Augmented Reality (AR) games software for a number of years. In addition to allowing students to play AR games, the software allows students to create their own games based on a map, a set of characters, and a plot of their choosing. In an earlier version of the software, students were allowed to add "substances" (e.g. oil spills) to their games. The functionality for doing so did not give the student much control and was unintuitive to use. In this thesis, I propose and analyze a prototype of the design and implementation of a new, improved interface that allows students to add a generalized version of a "substance" to their AR games. This generalization of a "substance" is termed a "data layer"
by Joseph Michael Laurendi.
M.Eng.
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Coelho, Enylton Machado. "Spatially Adaptive Augmented Reality." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7583.
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One of the most important problems in real-time, mobile augmented reality is *registration error* -- the misalignment between the computer generated graphics and the physical world the application is trying to augment. Such misalignment may either cause the information presented by the application to be misleading to the user or make the augmentation meaningless.
In this work, we question the implied assumption that registration error must be eliminated for AR to be useful. Instead, we take the position that registration error will never be eliminated and that application developers can build useful AR applications if they have an estimate of registration error. We present a novel approach to AR application design: *Spatially Adaptive Augmented Reality* (i.e., applications that change their displays based on the quality of the alignment between the physical and virtual world). The computations used to change the display are based on real-time estimates of the registration error. The application developer uses these estimates to build applications that function under a variety of conditions independent of specific tracking technologies.
In addition to introducing Spatially Adaptive AR, this research establishes a theoretical model for AR. These theoretical contributions are manifested in a toolkit that supports the design of Spatially Adaptive AR applications: OSGAR.
This work describes OSGAR in detail and presents examples that demonstrate how to use this novel approach to create adaptable augmentations as well as how to support user interaction in the presence of uncertainty.
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Fekolkin, Roman. "Analysis of Augmented Reality Games on Android platform." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-14431.
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In this paper the research surrounding the Augmented Reality in games on Android platform was performed by testing 108 games from Google Play Market and by analyzing the hundreds of user reviews to determine the level of acceptance and the level of technical stability of the mobile games based on that technology. The Location-based, Marker-based and games based on somewhat different approach were studied and compared by the runtimes, game genres and by the featuring aspects including the presence of multiplayer mode, sound effects and the dimension that the virtual objects were positioned in. The overview of the studied games was presented in this paper. The results, for instance, include that the AR game variation is very narrow in terms of gameplay style and technical issues are very commonly encountered and it makes them very influential to the gameplay experience. The rareness of the multiplayer mode among the AR games was discovered meaning the domination of the single-player game designs. The Marker-based games were in general more computationaly heavy than Location-based games when it comes to the runtime performance.
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Wang, Tiffany (Tiffany N. ). "Case for usability : designing Outdoor Augmented Reality games." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/46527.
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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.Pages 95-96 blank
Includes bibliographical references (p. 87-88).
Creating a successful Outdoor Augmented Reality (OAR) game can be a complicated process. With every new feature added to the OAR toolset, games gain more levels of complexity, grow in size of content, and become increasingly difficult to produce and manage. In order to identify plausible methods to help alleviate some of the difficulties when creating OAR games, a heuristic usability evaluation of the existing Game Editor toolkit and an assessment of the needs of game designers were made as part of this research. Two new applications, the Desktop Editor and Remote Editor, were designed, prototyped, and evaluated by new and experienced game designers. The Desktop Editor offers new methods of visualizing and working with data which have proven to be useful features for creating games but also add difficulties to overall learnability. The Remote Editor offers on-location game editing capabilities which help expedite many of the tasks involved with creating and testing OAR games. Feedback and user tests suggest that the new applications offer valuable ideas for game editing features that would be beneficial in future iterations of the OAR Game Editor toolkit.
by Tiffany Wang.
M.Eng.
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Chen, Jiajian. "Non-photorealistic rendering with coherence for augmented reality." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45749.
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A seamless blending of the real and virtual worlds is key to increased immersion and improved user experiences for augmented reality (AR). Photorealistic and non-photorealistic rendering (NPR) are two ways to achieve this goal. Non-photorealistic rendering creates an abstract and stylized version of both the real and virtual world, making them indistinguishable. This could be particularly useful in some applications (e.g., AR/VR aided machine repair, or for virtual medical surgery) or for certain AR games with artistic stylization.
Achieving temporal coherence is a key challenge for all NPR algorithms. Rendered results are temporally coherent when each frame smoothly and seamlessly transitions to the next one without visual flickering or artifacts that distract the eye from perceived smoothness. NPR algorithms with coherence are interesting in both general computer graphics and AR/VR areas. Rendering stylized AR without coherence processing causes the final results to be visually distracting. While various NPR algorithms with coherence support have been proposed in general graphics community for video processing, many of these algorithms require thorough analysis of all frames of the input video and cannot be directly applied to real-time AR applications. We have investigated existing NPR algorithms with coherence in both general graphics and AR/VR areas. These algorithms are divided into two categories: Model Space and Image Space. We present several NPR algorithms with coherence for AR: a watercolor inspired NPR algorithm, a painterly rendering algorithm, and NPR algorithms in the model space that can support several styling effects.
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Zhao, Hongyi. "Augmented Reality Technologies on iPhone : What and how iPhone could achieve with Augmented Reality and 3D-graphics." Thesis, Uppsala University, Department of Information Technology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-130628.
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Augmented Reality Technology becomes closer to normal life when found in hand-held devices. And hand-held devices get more and more computing power as the rising of chip energy efficiency. iPhone, as a quickly growing handset, is a promising platform for Augmented Reality application with its various built-in sensors. The author gave a review of iPhone platform regarding Augmented Reality. Then, the author attempted to carry out two prototypes of Augmented Reality games and performed evaluation of the two prototypes in terms of performance, noise and calibration. Finally, the author gave the conclusion of how iPhone could deal with Augmented Reality based on the data collected in the evaluation of prototypes.
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Nilsen, Trond. "Guidelines for the Design of Augmented Reality Strategy Games." Thesis, University of Canterbury. Computer Science and Software Engineering, 2006. http://hdl.handle.net/10092/1109.
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With augmented reality, we can create interfaces that merge virtual objects and data seamlessly with the real world, potentially improving collaboration and interaction. This technology offers opportunities for games, allowing new designs that merge the diverse social and physical interaction of real world games with rapid interactivity and computing power of digital games. To date, research has primarily focused on issues of technology, interaction design, and nfrastructure; the design of compelling play has received little attention. We play games because they are enjoyable; therefore, in order to create attractive games, we must understand enjoyment. In games, engagement, social interaction, and emotional involvement are among the most common causes. We can design for engagement in play using Csikszentmihalyi's model of 'flow'; for social play by making communication easy, natural, and useful; and emotional involvement by understanding the mechanisms by which games stimulate us. Alongside an understanding of enjoyment, lessons must be drawn from design experience. AR Tankwar is an augmented reality strategy game developed over the course of this thesis, and has been evaluated in the field at a large games convention, and in a detailed comparative study with existing games on tabletop and desktop PC. Evaluations revealed predictable limitations with the technology, but also provided insight into how designers can make best use of the medium. Based on these activities, and existing knowledge of interaction and collaboration in augmented reality, this thesis addresses compelling play in augmented reality by developing a set of design guidelines for augmented reality games, with particular focus on strategy games.
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Schrier, Karen L. "Revolutionizing history education : using augmented reality games to teach histories." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/39186.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Comparative Media Studies, 2005.Includes bibliographical references (leaves 154-162).
In an ever-changing present of multiple truths and reconfigured histories, people need to be critical thinkers. Research has suggested the potential for using augmented reality (AR) games- location-based games that use wireless handheld devices to provide virtual game information in a physical environment-as educational tools. I designed "Reliving the Revolution" as a model for using AR games to teach historic inquiry, decision-making, and critical thinking skills. "Reliving the Revolution" takes place in Lexington, MA, the site of the Battle of Lexington (American Revolution) and simulates the activities of a historian, such as evidence collection and interpretation. Participants interact with virtual historic figures and gather virtual testimonials and evidence on the Battle, each triggered by GPS to appear on the handheld devices depending on one's specific location on or around the Lexington Common. The participants collect differing evidence based on their historic role in the game (Minuteman soldier, loyalist, African American/Minuteman soldier, or British soldier) and then collaboratively evaluate who fired the first shot to start the Battle of Lexington.
(cont.) I envision "Reliving the Revolution" not as a standalone educational solution, but as an activity integrated into a broader history curriculum that teaches students how to approach and evaluate complex social problems. This thesis provides a detailed rationale for each of my design choices, as well as an assessment of each choice based on the results of iterative game testing. In my analysis of the game's design, I focus specifically on four game elements: (1) collaborative, (2) role-playing, (3) storytelling or narrative elements; and (4) kinesthetic and mobility. Results of trials of the game suggest that "Reliving the Revolution" and similar AR games can enhance the learning of: (1) historical name, places, and themes; (2) historical methodology and the limits to representations of the past; and (3) alternative perspectives and challenges to "master" historical interpretations. The game motivated participants to gather, evaluate, and interpret historical information, devise hypotheses and counter-arguments, and draw informed conclusions.
(cont.) My trials also suggested that AR games such as "Reliving the Revolution" can enhance learning because it can: 1. Create an authentic "practice field" for solving problems and using real-world contexts and tools. 2. Increase the potential for collaboration among participants, and enhance opportunities for reflection. 3. Enable participants to take on and express new identities through role-playing. 4. Encourage participants to explore more deeply a physical site and to consider interactions between the real and virtual worlds.
by Karen L. Schrier.
S.M.
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Finch, Ellen Yongin. "TaleBlazer : using iBeacons for indoor location-based augmented reality games." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/100594.
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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (page 75).
TaleBlazer is a platform for creating and playing location-based educational augmented reality games. This thesis describes the design and implementation of new indoor location-based functionality in TaleBlazer, based on the use of iBeacon technology. It describes how the new functionality can be used in indoor location-based games, and presents results from a pilot indoor game conducted with the Harvard Museum of Natural History.
by Ellen Yongin Finch.
M. Eng.
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Gustafsson, Axel. "Supporting Immersion of Board Games utilising Phone-based Augmented Reality." Thesis, Malmö universitet, Fakulteten för kultur och samhälle (KS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-21918.
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This thesis investigates a possibility of using phone-based Augmented Reality in a board game-setting in order to support immersion for experienced board game players. Using a user-centered design approach with workshops, interviews and play sessions to understand the qualities and applicability of phone-based Augmented Reality in combination with a board game, the research contributes with an advisory conclusion for future designers developing a board game including phone-based Augmented Reality components.
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Singh, Arshdeep. "Teaching Landscape Construction Using Augmented Reality." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7132.
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This thesis describes the design, development, and evaluation of an interactive Microsoft HoloLens application that projects landscape models in Augmented Reality. The application was developed using the Unity framework and 3D models created in Sketchup. Using the application, students can not only visualize the models in real space but can also interact with the models using gestures. The students can interact with the models using gaze and air-tap gestures.
Application testing was conducted with 21 students from the Landscape Architecture and Environmental Planning department at Utah State University. To evaluate the application, students completed a usability survey after using the application. Students also participated in a focus group. Results indicate that students were excited to use the application and found it helpful for learning landscape construction concepts. Some of the students found the application and the HoloLens device cumbersome to use, and they offered suggestions for how to improve the application. The thesis concludes with recommendations for future work.
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Dahl, Tyler. "Real-Time Object Removal in Augmented Reality." DigitalCommons@CalPoly, 2018. https://digitalcommons.calpoly.edu/theses/1905.
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Diminished reality, as a sub-topic of augmented reality where digital information is overlaid on an environment, is the perceived removal of an object from an environment. Previous approaches to diminished reality used digital replacement techniques, inpainting, and multi-view homographies. However, few used a virtual representation of the real environment, limiting their domains to planar environments.
This thesis provides a framework to achieve real-time diminished reality on an augmented reality headset. Using state-of-the-art hardware, we combine a virtual representation of the real environment with inpainting to remove existing objects from complex environments.
Our work is found to be competitive with previous results, with a similar qualitative outcome under the limitations of available technology. Additionally, by implementing new texturing algorithms, a more detailed representation of the real environment is achieved.
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Lehmann, Sarah E. "TaleBlazer : implementing a multiplayer server for location-based augmented reality games." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/85441.
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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2013.Cataloged from PDF version of thesis.
Includes bibliographical references (page 59).
TaleBlazer is a location-based, augmented reality game engine that allows users to both design their own games as well as play them on mobile devices. This thesis explores the addition of a multiplayer option that would allow users to design and play games involving multiple players in a single game world. It details how such a system would be set up to use with the existing TaleBlazer code and provides some results from initial tests of this prototype.
by Sarah E. Lehmann.
M. Eng.
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Hattenberger, Timothy John. "A psychophysical investigation of global illumination algorithms used in augmented reality /." Link to online version, 2006. https://ritdml.rit.edu/dspace/handle/1850/1541.
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NolÃto, Carleandro de Oliveira. "An authoring tool for location-based mobile games with augmented reality features." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=17053.
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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgicoLocation-based mobile games are a special type of game where location technologies are employed to track players and to alter the rules of the games. Such games are a subclass of pervasive games whose playability advances according to the location of players. This work proposes an authoring tool to develop location-based mobile games enhances with augmented reality features. This tool was conceived from research studies on authoring tools and pervasive games. By analysing the related works, we have compiled the most common features of location-based mobile games and the main aspects presented in authoring tools for developing these games. Moreover, we have used focus groups to both enhance the creation of new scenarios for location-based mobile games and improve the usage of augmented reality in such games. Ultimately, we have compiled a set of requirements to design a software architecture for the development of an authoring tool. The designed architecture is composed of a server to manage running games, a web based system for developing these games, and a mobile application in which the games are executed. The main goal of this work is to provide a software solution that allows non-programmers to design, build and execute location-based mobile games. To assess the proposed work, we have designed and implemented a game called "Battle for Fortaleza" using the authoring tool. Besides, we have conducted interviews with users to validate the utility and the easiness of the tool to develop location-based mobile games.
Jogos mÃveis baseados em localizaÃÃo sÃo aqueles que fazem uso de tecnologias de localizaÃÃo e que agregam a posiÃÃo de seus jogadores nas regras do jogo. Estes jogos sÃo uma subclasse de jogos pervasivos em que a jogabilidade progride de acordo com a localizaÃÃo do jogador. Neste trabalho à proposta uma ferramenta de autoria para a criaÃÃo de jogos mÃveis baseados em localizaÃÃo, acrescidos com recursos de realidade aumentada. A concepÃÃo desta ferramenta foi feita com base em uma revisÃo da literatura sobre ferramentas de autoria e jogos pervasivos. A partir de trabalhos relacionados, buscou-se recolher as caracterÃsticas comuns de jogos mÃveis baseados em localizaÃÃo e caracterÃsticas de ferramentas de autoria para estes jogos. AlÃm disso, utilizou-se grupos focais para refinar os novos cenÃrios para jogos mÃveis baseados em localizaÃÃo, em particular a respeito de como a realidade aumentada pode ser utilizada nestes jogos. Com o estudo de ambos, na revisÃo da literatura e nos grupos focais foi produzido um conjunto de requisitos para projetar uma arquitetura de software para o desenvolvimento de uma ferramenta de criaÃÃo. Esta arquitetura à composta de um servidor para gerenciar os jogos em execuÃÃo, uma aplicaÃÃo baseada na web que permite a autoria dos jogos e um aplicativo para dispositivos mÃveis onde sÃo executados os jogos desenvolvidos. Nosso principal objetivo à fornecer uma soluÃÃo de software para permitir que usuÃrios nÃo-programadores possam projetar, construir e executar jogos mÃveis baseados em localizaÃÃo. A fim de avaliar a nossa ferramenta, foi projetado e implementado um jogo chamado âBatalha por Fortalezaâ, em que as funcionalidades da ferramentas sÃo demonstradas. AlÃm disso, buscou-se validar, com usuÃrios, se a ferramenta proposta consegue auxiliar na criaÃÃo de jogos de maneira fÃcil e intuitiva.
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Jones, James Adam. "Egocentric depth perception in optical see-through augmented reality." Master's thesis, Mississippi State : Mississippi State University, 2007. http://library.msstate.edu/etd/show.asp?etd=etd-07062007-002245.
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de, Sousa Moura Guilherme. "An authoring tool of photo-realistic virtual objects for augmented reality." Universidade Federal de Pernambuco, 2010. https://repositorio.ufpe.br/handle/123456789/2385.
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Previous issue date: 2010Conselho Nacional de Desenvolvimento Científico e Tecnológico
Esta dissertação de mestrado apresenta uma ferramenta de autoria para auxiliar a criação de aplicações de Realidade Aumentada que fazem uso de renderização fotorrealística. A ferramenta, denominada RPR-SORS Editor, utiliza uma API de fotorrealismo (RPR-SORS) e tem como foco a criação e edição de objetos virtuais. A ferramenta desenvolvida é capaz de manipular de forma interativa os parâmetros de materiais do RPR-SORS e do motor de renderização utilizado (OGRE), com a opção de visualizar os objetos fotorrealistícos em Realidade Aumentada. O resultado final da edição pode ser exportado para uma outra aplicação que utilize a API de fotorrealismo e o motor de renderização citados. Um estudo de caso referente a uma aplicação de Realidade Aumentada para arquitetura foi realizado de forma a avaliar a ferramenta desenvolvida
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Weber, Jessika. "Designing engaging experiences with location-based augmented reality games for urban tourism environments." Thesis, Bournemouth University, 2017. http://eprints.bournemouth.ac.uk/27176/.
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Gameplay has recently unfolded as playfulness in various cultural forms using mobile technologies. The rapid affordability paired with the latest technology improvements enabled the diffusion of mobile devices among tourists, who are among the most avid users of mobile technologies. The advent of mobile devices has initiated a significant change in the way we perceive and connect with our environment and paved the way for location-based, mobile augmented reality (AR) games that provide new forms of experiences for travel and tourism. With the recent developments like Pokémon Go and a prediction of 420 million downloads per year by 2019, the mobile game market is one of the fastest growing fields in the sector. Location-based AR games for mobile devices make use of players‟ physical location via the GPS sensor, accelerometer and compass to project virtual 2D and 3D objects with the build-in camera in real time onto the mobile game user interface (GUI) in order to facilitate gameplay activities. Players interact with the virtual and physical game world and overcome artificial challenges while moving around in the real environment. Where current mobile games withdraw players from reality, location-based AR games aim to engage players with the physical world by combining virtual and physical game mechanics in an enhanced way that increases the level of interactive educative and entertaining engagement. Despite some recent research on location-based AR games, game designers do not know much about how to address tourism requirements and the development of mediated playful experiences for urban tourism environments. This study explores the use of location-based AR games to create engaging and meaningful experiences with the tourism urban environment by combining interdisciplinary research of social sciences, (mobile) game design and mobile game user research (mGUR) to contribute to experience design in the context of travel and tourism. Objectives of the study are to identify the influence of key game elements and contextual gameplay parameters on the individual game experience (GX). To achieve the aim, the study has taken a pragmatic interpretivist approach to understand the player‟s individual GX in an evolving gameplay process in order to inform location-based game design. The project explores the interaction between the player, the game and the tourism context, which is assessed by a sequential triangulation of qualitative mixed methods. Two games were identified to be relevant for the tourism application that fulfilled the attributes of a location-based AR game. The first game is a role-playing adventure game, set in the time and place of the Cold War, called Berlin Wall 1989. The second game, Ingress, is a fictive, large area, massively multiplayer role-playing game that uses the real world as the battleground between two game fractions. A conceptual framework has been developed that presents the player engagement process with location-based AR games in urban tourism environments. The findings of the study indicate that gameplay is a moment-by-moment experience that is influenced by multiple aspects. The creation of engaging experiences between players, the game and the tourism context is related to six identified engagement characteristics; emotional engagement, ludic engagement, narrative engagement, spatial engagement, social engagement and mixed reality engagement. The study identified that the main motivations of playing a location-based AR game are the exploration of and learning about the visited destination, curiosity about the new playful activity and socialising with other players. Emotions underlie the creation of engagement stimulated by the alteration of playful interactions. The findings revealed that storytelling and simple game mechanics such as walking, feedback and goal orientation are essential elements in the creation of engaging experiences. Augmented reality, as a feature to connect the real with the virtual world, needs to create real added value for the gameplay in order to be perceived as engaging for players. The study proposes serious location-based AR games as an alternative form for tourism interpretation and has showed opportunities to enhance the tourist experience through self-directed, physical and mental interaction between players, the environment and the location-based AR game. The findings of the research illustrate the complexity of designing location-based game experiences. The developed conceptual framework can be used to inform future location-based AR game design for travel and tourism.
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Stanescu, Robert. "Designing a conceptual framework for reusable Alternate Reality Games." Thesis, Malmö högskola, Fakulteten för teknik och samhälle (TS), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20221.
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The main drawback of Alternate Reality Gaming, compared to other genres, is that it lacks reusability; typically it cannot be played freely by anyone, anytime, anywhere. However, with the help of modern technology, especially in the mobile devices section, this can be overcome, at least to a certain extent. Therefore, we propose a conceptual framework built upon these challenges raised by other ARGs, a framework meant for game designers and developers that wish to create reusable ARGs, to add reusability to their own ARGs or even turn their digital games into a mixed experience. We designed it by reviewing relevant literature of past ARGs that had a reusable or a digital component, from which we have drawn conclusions and mixed them with our own ideas. Then we tested it iteratively by developing two prototypes and evaluating them through user feedback.
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De, Oliveira Faria Nayara. "Effects of Augmented Reality Head-up Display Graphics’ Perceptual Form on Driver Spatial Knowledge Acquisition." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/96704.
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In this study, we investigated whether modifying augmented reality head-up display (AR HUD) graphics’ perceptual form influences spatial learning of the environment. We employed a 2x2 between-subjects design in which twenty-four participants were counterbalanced by gender. We used a fixed base, medium-fidelity driving simulator at the COGENT lab at Virginia Tech. Two different navigation cues systems were compared: world-relative and screen-relative. The world-relative condition placed an artificial post sign at the corner of an approaching intersection containing a real landmark. The screen-relative condition displayed turn directions using a screen-fixed traditional arrow located directly ahead of the participant on the right or left side on the HUD. We captured empirical data regarding changes in driving behaviors, glance behaviors, spatial knowledge acquisition (measured in terms of landmark and route knowledge), reported workload, and usability of the interface.
Results showed that both screen-relative and world-relative AR head-up display interfaces have similar impact on the levels of spatial knowledge acquired; suggesting that world-relative AR graphics may be used for navigation with no comparative reduction in spatial knowledge acquisition. Even though our initial assumption that the conformal AR HUD interface would draw drivers’ attention to a specific part of the display was correct, this type of interface was not helpful to increase spatial knowledge acquisition. This finding contrasts a common perspective in the AR community that conformal, world-relative graphics are inherently more effective than screen-relative graphics. We suggest that simple, screen-fixed designs may indeed be effective in certain contexts.
Finally, eye-tracking analyses showed fundamental differences in the way participants visually interacted with different AR HUD interfaces; with conformal-graphics demanding more visual attention from drivers. We showed that the distribution of visual attention allocation was that the world-relative condition was typically associated with fewer glances in total, but glances of longer duration.M.S.
As humans, we develop mental representations of our surroundings as we move through and learn about our environment. When navigating via car, developing robust mental representations (spatial knowledge) of the environment is crucial in situations where technology fails, or we need to find locations not included in a navigation system’s database. Over-reliance on traditional in-vehicle navigation devices has been shown to negatively impact our ability to navigate based on our own internal knowledge. Recently, the automotive industry has been developing new in-vehicle devices that have the potential to promote more active navigation and potentially enhance spatial knowledge acquisition. Vehicles with augmented reality (AR) graphics delivered via head-up displays (HUDs) present navigation information directly within drivers’ forward field of view, allowing drivers to gather information needed without looking away from the road. While this AR navigation technology is promising, the nuances of interface design and its impacts on drivers must be further understood before AR can be widely and safely incorporated into vehicles. In this work, we present a user study that examines how screen-relative and world-relative AR HUD interface designs affect drivers’ spatial knowledge acquisition. Results showed that both screen-relative and world-relative AR head-up display interfaces have similar impact on the levels of spatial knowledge acquired; suggesting that world-relative AR graphics may be used for navigation with no comparative reduction in spatial knowledge acquisition. However, eye-tracking analyses showed fundamental differences in the way participants visually interacted with different AR HUD interfaces; with conformal-graphics demanding more visual attention from drivers
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Gustav, During. "Evaluating game experience when using augment reality : In real time strategy games." Thesis, Blekinge Tekniska Högskola, Institutionen för kreativa teknologier, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-10938.
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Context. Augmented reality (AR) is a technology that uses the camera to display what is seen on the screen and adds digital informationover the picture. This study analyses how augmented reality mightaect game experience when applied to real time strategy games. Objectives. Evaluate the available development tools, to implementthe game prototype and the AR interaction. Then develop interactive methods for AR and traditional version. Create a basic articialintelligence, design the experiment to evaluate game experience, completion time and score. Methods. The experiment were executed after implementation of thegame, in this the participant played both the traditional and augmented reality version of the same game. Before starting to play participant lled out a pre inquiry about their previous experience withgames, tablets and computers. After playing they answered a postinquiry with questions about the game. The comparing experimentwas conducted with several participants in a controlled environment. Results. The results show that most participants thought that theAR version had an interesting mechanic and that the game experiencehad been enhanced when compared to the PC version. However theparticipants thought the controls where better on the PC. Conclusions. The results indicated that the game experience basedon player performance, decreased in the AR version and that the controls were better on the PC. The participants thought that the PCversion was a little easier to play. However about 71% of the participants thought the game experience on the AR version was interestingbecause they could move around while playing. The most enjoyableversion of the game varied a lot between participants, having a slightpreference for the PC version of the game. However, participantsmanifested an interest in playing a sequel of the game in the AR version.
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Kastemaa, Juho. "Recognizing Compound Facial Expressions of Virtual Characters in Augmented Reality." Thesis, KTH, Beräkningsvetenskap och beräkningsteknik (CST), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210233.
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How is it possible to design virtual characters that can express different emotions such as compound emotions that are a mix of basic emotion expressions? Augmented reality (AR) can create engaging experiences for participants, and in recent years, virtual faces and virtual characters have become increasingly realistic and expressive, for example, when reducing costs using therapeutic applications. The validity of virtual expression has been shown in studies on desktop computers but less so in AR. In this paper, the basic emotions and the compound emotions of virtual characters were studied and the character was designed to work with Microsoft HoloLens in AR. The process of creating basic emotion blends to a human virtual character was created and the animations were modified using Unity3D game engine. The participants (n = 24) experienced the virtual character in a job interview context wearing HoloLens mixed reality glasses. The virtual character made basic and compound facial expressions and the participants were asked to label them. The result show that all participants successfully recognized seven basic emotions and seven compound emotions from a virtual character in AR using HoloLens; however, disgust was confused with sad, and angry was sometimes confused with disgust. Also, the fearfully surprised was often mistaken with awed. The result show that the compound emotions were recognized quite well and the results indicate that the perceived valence changes depending on the facial expressions. The study provides insights into how blended emotive expressions for virtual characters are created and perceived.Hur är det möjligt att designa virtuella karaktärer som kan uttrycka olika känslor, till exempel blandade känslor som är en blandning av grundläggande känslor? Augmented Reality (AR) kan skapa engagerande upplevelser för deltagarna, och de senaste åren har virtuella ansikten och virtuella karaktärer blivit alltmer realistiska och uttrycksfulla, till exempel då kostnaderna minskas med hjälp av terapeutiska tillämpningar. Giltigheten av virtuellt uttryck har visats i studier på stationära datorer, men mindre i AR. I denna rapport studerades de grundläggande känslorna och hur de blandade känslorna av virtuella karaktären kan konstrueras för att fungera med Microsoft HoloLens i AR. Processen att skapa blandade känslor till en mänsklig virtuell karaktär konstruerades och animationerna modifierades med hjälp av Unity3D-spelmotor. Deltagarna (n = 24) upplevde den virtuella karaktären i en jobbintervju med Microsofts HoloLens. Den virtuella karaktären gjorde grundläggande och sammansatta ansiktsuttryck och deltagarna ombads kategorisera dom. Resultatet visar att alla deltagare framgångsrikt erkänt sju grundläggande känslor och sju blandade känslor från en virtuell karaktär i AR med hjälp av HoloLens; disgust var ihopblandad med sad, och angry var ibland ihopblandad med disgust. Fearfully surprised blev också ofta felaktig ihopblandad med awed. Studiens resultat visar att de blandade känslorna var lätta att känna igen och resultaten antyder på att den uppfattade valens förändras beroende på ansiktsuttryck. Studien ger insikter om hur blandade känslouttryck för virtuella karaktärer har konstruerats och uppfattats.
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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.
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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.
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Mazouzi, M. (Mounib). "Exploring the use of smart glasses, gesture control, and environmental data in augmented reality games." Master's thesis, University of Oulu, 2017. http://jultika.oulu.fi/Record/nbnfioulu-201803061300.
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Abstract. In the last decade, augmented reality has become a popular trend. Big corporations like Microsoft, Facebook, and Google started to invest in augmented reality because they saw the potential that it has especially with the rising of the consumer version of the head mounted displays such as Microsoft’s HoloLens and the ODG’s R7. However, there is a gap in the knowledge about the interaction with such devices since they are fairly new and an average consumer cannot yet afford them due to their relatively high prices.
In this thesis, the Ghost Hunters game is described. The game is a mobile augmented reality pervasive game that uses the environment light data to charge the in-game “goggles”. The game has two different versions, a smartphone and smart glasses version. The Ghost Hunters game was implemented for exploring the use of two different types of interactions methods, buttons and natural hand gestures for both smartphones and smart glasses. In addition to that, the thesis sought to explore the use of ambient light in augmented reality games.
First, the thesis defines the essential concepts related to games and augmented reality based on the literature and then describes the current state of the art of pervasive games and smart glasses.
Second, both the design and implementation of the Ghost Hunters game are described in detail. Afterwards, the three rounds of field trials that were conducted to investigate the suitability of the two previously mentioned interaction methods are described and discussed.
The findings suggest that smart glasses are more immersive than smartphones in context of pervasive AR games. Moreover, prior AR experience has a significant positive impact on the immersion of smart glasses users. Similarly, males were more immersed in the game than females. Hand gestures were proven to be more usable than the buttons on both devices. However, the interaction method did not affect the game engagement at all, but surprisingly it did affect the way users perceive the UI with smart glasses. Users that used the physical buttons were more likely to notice the UI elements than the users who used the hand gestures.
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Chang, Stephanie N. (Stephanie Ni-Wen). "TaleBlazer zap and go with organizations : a platform for managing and broadcasting location-based augmented reality games." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/91448.
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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2014.Cataloged from PDF version of thesis.
The TaleBlazer mobile application, developed by the MIT STEP Lab, allows users to create and play custom location-based augmented reality games. Many of the current games are created by TaleBlazer partner organizations, but the means of sharing these games with the general public is difficult and restricted. Zap and Go was conceived as an easier way for organizations to broadcast games to the public, and for the public to download, find, and play these games on their personal mobile devices. This paper presents the backend modifications and user interface designs implemented to support the desired Zap and Go features. This work paves the way for an improved gameplay experience and the growth of the TaleBlazer user base.
by Stephanie N. Chang.
M. Eng.
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Mossum, Veronika. "Designing for smartphone AR games." Thesis, Malmö universitet, Fakulteten för teknik och samhälle (TS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20259.
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Efter en tillfällig intresseminskning åren efter 2012, har AR nu nått en stadig takt av ökat intresse. Med smartphones som en ny plattform för AR applikationer, förflyttas forskningen till ett bredare fält och når en större användargrupp. Syftet med denna undersökningen är att bidra med kunskap i detta snabbväxande område, med fokus på interaktionsdesign för AR applikationer. Hur ser design strategierna ut i AR spel och om det finns några riktlinjer, hur används dem? En tvådelad innehållsanalys har genomförts som en del av denna uppsats. Första delen använder sig av ett kodsystem för att undersöka vilka av 16 utvalda designkategorier som finns i de testade spelen. 80 spel har analyserats, både på Android och iPhone. Den andra delen av innehållsanalysen är en djupanalys av tre spel med syfte att nå djupare kunskap. Pokemon GO, Stack it och Stack testades i denna delen och analyserades utifrån interaktionsdesignteorier. Denna uppsats har kommit till slutsatserna att likheter mellan de valda designstrategierna går att finna bland de testade spelen, småskaliga spel som använder SLAM har funnits vara det vanligaste och pekskärmen är det huvudsakliga interaktionssättet. De använda interaktionsdesignsteorierna som använts i andra testdelen har funnits vara användbara för att analysera mobila AR spel.After a decline short after 2012, AR applications have now reached a steady pace of increasing interest. With smartphones as the new main platform for AR, the research moves in to a broader field and reaches a bigger user group. The aim for this thesis is to contribute knowledge in this fast-developing field. The focus is on the interaction design for AR applications. How does the design strategies look in AR games and if there are any guidelines, how are they used? Two parts of a content analysis has been performed in this thesis. The first part uses a code scheme to test which of 16 selected design categories are present in the tested games. 80 games were analyzed. The second part of the content analysis was a in depth content analysis of three games to get a deeper knowledge. Pokémon GO, Stack it and Stack were tested in this part and analyzed with the help of interaction design theories. The conclusion is that similarities can be seen in the design strategies, small scale games using SLAM are the most common and the touchscreen are the main interaction. The used interaction design theories are useful for analyzing AR games.
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Johansson, Lucas. "Improving asset readability in top-down VR games." Thesis, Luleå tekniska universitet, Institutionen för konst, kommunikation och lärande, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-63864.
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With this work I wanted to examine how to improve readability of battlefields in top-down gamesfor VR by increasing the visual distinction between units. I analyzed three successful PC gameswithin the genre and created three different user tests to come up with my results and conclusions.The results from my VR test is compared to my non-VR tests to see what one has to do to reachthe same level of readability or better in VR. It turns out you need to put more time in to yourassets for improving readability in VR than without VR on a non-stereo display.
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Leite, Gilles Pedroza. "Games, Ludi & Ethos: considerações sobre a imersão em modelagens realistas." Pontifícia Universidade Católica de São Paulo, 2017. https://tede2.pucsp.br/handle/handle/20091.
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In this text we will travel through a critical exposition of the three-dimensional effects in movies and games development history creating a relation between the immersive factor and the technique of its production, we will seek to clarify how its developments, both aesthetic and technological, are reinventing the importance of image in contemporary society. Therefore, we will begin to show the context of production and levels of immersion, then move on to introduce an analytical look about the same. We will pass through the concepts of procedural modeling used in the industry of games, and the preference on its use on implementing the creation for vegetation landscapes. Then we elucidate these points through the game analysis The Witcher III, especially the landscape and vegetation through a match with the real tree that meet the aesthetic characteristics of the chosen object in the game
Neste texto iremos proceder a uma exposição crítica da história do desenvolvimento dos efeitos tridimensionais no cinema e nos jogos tecendo uma relação entre o fator imersivo com a técnica utilizada para a produção deste, ao mesmo tempo, vamos procurar elucidar de que forma seu desenvolvimento, tanto estético quanto tecnológico, vem reinventando a importância da imagem na sociedade contemporânea. Para tanto, começaremos por mostrar o contexto de produção e níveis de imersão, passando em seguida a introduzir um olhar analítico sobre o mesmo. Logo após, abordaremos conceitos empregados em modelagem procedural na indústria de jogos, suas vantagens e desvantagens, e sobre sua utilização para implementação na criação de paisagens vegetais. Em seguida, exemplificaremos esses pontos através da análise do game The Witcher III, em especial a paisagem e a vegetação, através de uma equiparação com a árvore real que atendam as características estéticas do objeto escolhido no jogo
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Tuška, David. "Návrh bytu pomocí rozšířené reality." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237140.
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This master's thesis is dealing with the usage of augmented reality for a layout of a flat proposition. The aim of this work is to create a system which detects markers on the walls using ARToolKit library. The position of the used in flat is determined by using the markers. Then the system disposes the user's position for operate with a camera in a 3D modelling program called Google SkretchUp. The system is consisted of a server and a client part. The server one copes with the incoming video in which it detects the markers and evaluates the position of user by the help of the markers. The client part of the system is represented by a plugin module for 3D modelling program Google SkretchUp. A client is asking the server for the positions of the user in the flat model and consequently he set the camera in the program Google SkretchUp according to these positions. The client is also asking for the individual pictures from the video which he shows against the background of Google SketchUp and thanks to this, he creates a view of a real scene extended of virtual objects.
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Straight, Ryan M. "An Exploratory Study of Augmented Reality and Mobile Games Examining Ingress Player Motivation and Potential Educational Value." Ohio University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1426691458.
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Lundmark, Martin. "The dice are still rolling : A study that shows how AR technology can create new gameplay specific qualities." Thesis, Högskolan Kristianstad, Fakulteten för ekonomi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-22065.
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The gaming industry is changing, and new games and gaming experiences are being developed. From board games to video games, to the latest AR and VR games. Right now, developers are trying to develop experiences that combine the real and the virtual into one wholesome and believable mix. This gives new opportunities to implement technology in classical artifacts. In the context of board games there are several tangible pieces, and the dice is the chosen main character for this study. Placed in the middle, between board games and digital games, AR games comes now. Previous research of board games and digital technology gives interesting information on the activity and provides a foundation for new design. The dice is world famous, so this study aims to find out how this piece can evolve with the help of technology. By working with concept driven design, in relation with an AR game studio, the AR Dice and the AR Game DiceFold was invented. A qualitative method was used in which experts of the industry got together to discuss the new experiences of AR games and the functionality of the AR Dice which might become a new part of the gaming world in the near future. The findings of this study lead to three promising discoveries. A new gaming component, new AR game and further answers regarding research in the scopes of AR games.Spelindustrin förändras och nya former av spel och upplevelser utvecklas. Från brädspel till datorspel till de nyaste AR och VR spelen. Just nu arbetar utvecklare med att skapa nya upplevelser där det virtuella kombineras med verkligheten till en fulländad och trovärdig mix. Detta skapar utrymme för nya möjligheter at implementera teknologi i klassiska artefakter. Inom kontexten av brädspel finner vi många fysiska spelobjekt och tärningen är vald som huvud-karaktären för den här studien. Placerad mellan brädspel och digitala spel kommer nu AR spel. Tidigare forskning inom brädspel och teknologi gav intressant information inom kontexten och agerar som riktlinjer och som grund för ny design. Tärningen är världskänd så siktar den härstudien mot att ta reda på hur det här objektet kan utvecklas med hjälp av teknologi. Genom att arbeta med konceptdriven design och i nära relation med en AR spelstudio, designades den nya AR tärningen och det nya AR spelet DiceFold. En kvalitativ metod användes där experter inom industrin diskuterade de nya möjliga upplevelser inom AR spel och funktionaliteten hos AR tärningen, som kanske kan bli en ny del inom spelvärlden i en snar framtid. Denna studie resulterar i tre olika saker, den nya spel komponenten AR tärningen, det nya AR spelet DiceFold och mer information inom forskning av AR spel.
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Panahi, Aliakbar. "Big Data Visualization Platform for Mixed Reality." VCU Scholars Compass, 2017. https://scholarscompass.vcu.edu/etd/5198.
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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.
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Nóbrega, Rui Pedro da Silva. "Interactive acquisition of spatial information from images for multimedia applications." Doctoral thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/11079.
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Dissertação para obtenção do Grau de Doutor em
InformáticaThis dissertation addresses the problem of creating interactive mixed reality applications where virtual objects interact in a real world scenario. These scenarios are intended to be captured by the users with cameras. In other words, the goal is to produce applications where virtual objects are introduced in photographs taken by the users. This is relevant to create games and architectural and space planning applications that interact with visual elements in the images such as walls, floors and empty spaces. Introducing virtual objects in photographs or video sequences presents several challenges, such as the pose estimation and the visually correct interaction with the boundaries of such objects. Furthermore, the introduced virtual objects should be interactive and respond to the real physical environments. The proposed detection system is semi-automatic and thus depends partially on the user to obtain the elements it needs. This operation should be significantly simple to accommodate the needs of a non-expert user. The system analyzes a photo captured by the user and detects high-level features such as vanishing points, floor and scene orientation. Using these features it will be possible to create virtual mixed and augmented reality applications where the user takes one or more photos of a certain place and interactively introduces virtual objects or elements that blend with the picture in real time. This document discusses computer vision, computer graphics and human-computer interaction techniques required to acquire images and information about the scenario involving the user. To demonstrate the framework and the proposed solutions, several proof-of-concept projects are presented and studied. Additionally, to validate the solution several system tests are described and each case-study interface was subject of different user-studies.
Fundação para a Ciência e Tecnologia - research grant SFRH/BD/47511/2008
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Sacashima, Rosemery Emika. "A realidade aumentada: desafios técnicos e algumas aplicações em jogos e nas Artes Visuais." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/27/27159/tde-12122011-222704/.
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A investigação desta dissertação consiste em definir os conceitos de Realidade Aumentada, seus desafios técnicos e tecnológicos, mapear as várias áreas de sua aplicação e quais as suas contribuições na criação das poéticas visuais. Para essa finalidade, tornou-se necessário o entendimento do processo histórico da Realidade Virtual do qual faz parte como uma linha de pesquisa, com seus desafios e aspectos específicos. Podemos perceber, ao longo da pesquisa, que a área dos jogos eletrônicos, com seus interesses mercadológicos, estimula o desenvolvimento tecnológico do sistema de Realidade Aumentada. E que alguns recursos dos sistemas de Realidade Aumentada têm sido utilizados por artistas visuais nas suas criações poéticas, integrando o observador em suas obras e estimulando novas implicações às tecnologias.The investigation of this thesis sought to define the concepts of Augmented Reality, its technological and technical challenges, to map its various fields of application and reveal its contribution to the creation of visual poetry. To achieve that, it was necessary to understand the historical process of Virtual Reality, to which it belongs as a line of research with its challenges and specific features. We could realize along the research that the area of electronic games with its increasing interest in the market fosters the technological development of the Augmented Reality system. Moreover, some resources of the Augmented Reality systems have been used by Visual artists in their poetic creations, integrating the observer to their works and encouraging new approaches towards technology.
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Baroya, Sydney. "Real-time Body Tracking and Projection Mapping in the Interactive Arts." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2250.
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Projection mapping, a subtopic of augmented reality, displays computer-generated light visualizations from projectors onto the real environment. A challenge for projection mapping in performing interactive arts is dynamic body movements. Accuracy and speed are key components for an immersive application of body projection mapping and dependent on scanning and processing time.
This thesis presents a novel technique to achieve real-time body projection mapping utilizing a state of the art body tracking device, Microsoft’s Azure Kinect DK, by using an array of trackers for error minimization and movement prediction. The device's Sensor and Bodytracking SDKs allow multiple device synchronization. We combine our tracking results from this feature with motion prediction to provide an accurate approximation for body joint tracking. Using the new joint approximations and the depth information from the Kinect, we create a silhouette and map textures and animations to it before projecting it back onto the user. Our implementation of gesture detection provides interaction between the user and the projected images.
Our results decreased the lag time created from the devices, code, and projector to create a realistic real-time body projection mapping. Our end goal was to display it in an art show. This thesis was presented at Burning Man 2019 and Delfines de San Carlos 2020 as interactive art installations.
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Nakamura, Ricardo. "Vídeo-Avatar com detecção de colisão para realidade aumentada e jogos." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-01102008-132754/.
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A proposta deste trabalho é demonstrar a viabilidade de um sistema para inserção de um vídeo-avatar interativo em um ambiente virtual 3D, utilizando-se somente um computador pessoal e câmeras domésticas. Sua contribuição, em relação a trabalhos similares, consiste em integrar técnicas e algoritmos em uma solução inovadora de baixo custo computacional, voltada principalmente para aplicações de educação e entretenimento. Este trabalho expande as pesquisas realizadas anteriormente no Laboratório de Tecnologias Interativas sobre vídeo-avatares para teleconferência. O vídeo-avatar proposto é posicionado corretamente em relação a outros objetos do ambiente virtual e pode interagir com eles, sem a utilização de técnicas de reconstrução geométrica que apresentam altos custos de processamento. A demonstração da viabilidade da proposta é feita através da implementação de protótipos.The proposal of this work is to demonstrate the feasibility of a system for the insertion of an interactive video avatar in a 3D virtual environment, using a single personal computer and home-use cameras. Its contribution, relative to similar works, consists in integrating techniques and algorithms in an innovative solution with low computational cost, aimed mainly at educational and entertainment applications. This work extends research previously performed at the Laboratório de Tecnologias Interativas about video avatars for teleconferencing. The proposed video avatar is correctly positioned in relation to other objects in the virtual environment and is capable of interacting with them, without resorting to geometric reconstruction techniques that present high processing costs. The demonstration of the feasibility of the proposal is performed through the implementation of prototypes.
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Calife, Daniel. "Robot ARena: uma infra-estrutura para o desenvolvimento de jogos com realidade aumentada espacial." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-28032008-162730/.
Full textAbstract:
Atualmente Jogos Eletrônicos possuem uma grande relevância no setor econômico, na computação e na pesquisa acadêmica, não se limitando apenas a aplicações de entretenimento. Na busca por inovação na jogabilidade e nas interfaces interativas dos jogos eletrônicos, a Realidade Aumentada é uma das novas fronteiras a serem exploradas. Este trabalho apresenta a pesquisa, desenvolvimento e teste de uma infra-estrutura, denominada Robot ARena, para o desenvolvimento de jogos inovadores utilizando a Realidade Aumentada e as novas interfaces que esta tecnologia possibilita. Baseada em interfaces horizontais e composta por elementos de hardware e software, a Robot ARena possui uma arquitetura flexível que possibilita diversas formas de interação e de visualização. Outro aspecto previsto neste projeto é o controle e a comunicação de robôs, que podem ser utilizados como avatares nos jogos. Os conceitos envolvidos, Jogos Eletrônicos e Realidade Aumentada Espacial, são discutidos, bem como os trabalhos que inspiraram alguns dos aspectos desta infra-estrutura. Um protótipo da Robot ARena foi implementado e testado e utilizado no desenvolvimento de dois protótipos de jogos, FootBot ARena e TanSpace, que trazem novos desafios a esta infra-estrutura, como explorar a influência de objetos virtuais aos objetos reais e a aplicação de interfaces tangíveis.Nowadays Electronic Games have a great importance in the economic sector, in computing and in academic research, not limited only to entertainment applications. In the search for innovation in gameplay and in the interactive interfaces of electronic games, Augmented Reality is one of the new frontiers to be explored. This work presents the research, development and testing of an infrastructure, called Robot ARena, for the development of innovative games using the Spatial Augmented Reality and new interfaces that this technology allows. Based on horizontal interfaces with elements of hardware and software, Robot ARena has a flexible architecture that enables different ways of interaction and visualization. Another aspect planned for this project is the control and communication of robots, which can be used as avatars in games. The concepts involved, Electronic Games and Spatial Augmented Reality, are discussed, as well as the work that inspired some aspects of this infrastructure. A Robot ARena prototype was implemented, tested and used in the development of two games prototypes, FootBot ARena and TanSpace, which brings new challenges to the infrastructure, such as exploration of the influence of virtual objects in real objects and the application of tangible interfaces.
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Fergusson, Christopher, Daniel Karlsson, and Festim Zuta. "Agent O - Utvecklingen av ett mobilt lärospel." Thesis, Malmö högskola, Institutionen för konst, kultur och kommunikation (K3), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-23906.
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I denna rapport vill vi lyfta fram de möjligheter och begränsningar som finns för att skapa nya engagerande läromiljöer genom att implementera ett mobilt lärospel i ett svenskt skolsammanhang. För att exemplifiera detta har vi i vårt projekt skapat ett mobilt lärospel kallat Agent O, som två högstadieskolor med ungdomar mellan 15-16 år gamla fått testspela.This essay is a product of our bachelor of science in interactiondesign. Our focus in this project was to evaluate the mobile learning game from MIT and transform it so it would fit into Swedish schools and to redesign the interface from an interactiondesigners perspective and make it more goal-orientated for teenagers at the age of 13 to 16 years old. This resulted in the mobile learning game called Agent O. A learning game with the main purpose to evolve an interaction between the pupils and the pedagogical material through a handheld computer. Taking the learning procedure to a level where the learning part differs as when reading a textbook or solving a mathematic equation. Learning by doing may encourage the teenager to be active in the lecture in a progressive way.In this essay we present the theoretical basis by giving a background and context description of technology where it has been used as an educational complement. We will describe the limitations when designing an interface for mobile games, and look upon the possibilities for this kind of mobile learning game in Swedish schools. We have performed two main usertests at two schools in Malmö and the results of these tests are presented in the report.
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Fernandes, Anderson Mine. "Arquiz: serious game virtual para sensibilizar jovens quanto ao risco de uso de drogas." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/3221.
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A adolescência é uma fase de descobertas e auto-afirmação, normalmente conhecida pela preocupação dos pais, esta torna os jovens vulneráveis a vários problemas, dentre eles o consumo de drogas, o que requer atenção para que esses adolescentes não entrem neste mundo. O governo faz sua parte distribuindo informações, cartilhas e campanhas sobre a utilização das drogas, mas normalmente essas não embarcam êxito por tratar o jovem como problemático e sendo uma forma mais tradicional não consegue mais atrair a atenção, podendo ser considerada uma forma inadequada para este público. Por um outro lado, os jovens possuem fascínio por jogos. Acredita-se que uma abordagem utilizando jogos educacionais eletrônicos possam lograr maior sucesso, devido ao ambiente atrativo que oferecem. Em estudos realizados em jovens, com jogos comuns e jogos eletrônicos pôde-se notar a importância da utilização desse tipo de intervenção. Esta dissertação apresenta uma proposta de desenvolvimento por meio de um jogo com Realidade Aumentada como estratégia de auxiliar na informação e prevenção ao uso de drogas em jovens e adolescentes, um tipo de jogo onde foi utilizada uma tecnologia que mistura o mundo real com imagens em 3D. A pesquisa também realizou uma métrica para pesquisa dentro do universo escolar, que possui o público necessário para a aplicação do jogo. Analisando os resultados pode se concluir que a potencialidade do jogo caracterizado para esta comunidade pôde perfazer uma maior conscientização do que as demais abordagens apresentadas.Adolescence is a stage of discovery and self-affirmation, commonly known by the concern of parents, this makes young people vulnerable to various problems, including drug use, which requires attention to these teenagers do not enter this world. The government is doing its part by distributing information leaflets and campaigns on the use of drugs, but usually these board not succeed by treating the youth as problematic and being a more traditional way can no longer attract attention and can be considered an inappropriate way for this public. On another side, young people have fascination for games. It is believed that an approach using electronic educational games can achieve greater success due to the attractive environment they offer. In studies conducted in young people, with common games and electronic games could be noted the importance of using this type of intervention. This work presents a proposal for development through a game with Augmented Reality as an aid strategy in information and prevention of drug use in young people and adolescents, a type of game where a technology was used to mix the real world with 3D images . The survey also conducted a metric for research within the school environment, which has the public necessary for the implementation of the game. Analyzing the results it can be concluded that the game featured potential for this community could make up a greater awareness than other approaches presented.
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Fouquet, François. "Contributions à l’acquisition, à la modélisation et à l’augmentation d’environnements complexes." Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10288.
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De nos jours, les images augmentées font partie du quotidien. Du cinéma aux jeux vidéo en passant par l'architecture ou le design, nombreuses sont les applications qui ont besoin d'afficher des objets synthétiques dans un contexte réel. Cependant, le processus permettant d'intégrer ces objets de manière cohérente dans leur environnement peut rapidement devenir très difficile à mettre en œuvre. Lorsque l'environnement à augmenter est de grande taille ou présente une géométrie ou un éclairage complexe, sa modélisation devient alors fastidieuse et l'utilisation de ces modèles dans le rendu d'images augmentées réalistes est très coûteuse en ressources. D'un autre côté, des applications telles que la réalité augmentée ont besoin de méthodes de rendu efficaces pour fonctionner en temps réel. Elles doivent, par ailleurs, pouvoir s'adapter automatiquement à des environnements a priori inconnus avec pour seule source d'informations les images acquises progressivement dans ces derniers. Dans cette thèse, nous nous sommes appuyés sur les méthodes développées en vision par ordinateur, en modélisation à partir d'images et en synthèse d'images pour proposer une approche globale au problème d'augmentation cohérente d'environnements complexes et progressivement découverts. Nous y développons de nouvelles méthodes d'acquisition permettant d'obtenir des images RGB+Z avec une grande dynamique et localisées dans l'environnement. Nous présentons ensuite comment exploiter cette source d'information pour construire incrémentalement des représentations de la géométrie et de l'éclairement de la scène à augmenter. Enfin, nous apportons de nouvelles approches de rendu adaptées à ces modélisations et permettant une génération rapide d'images augmentées où l'éclairement des objets synthétiques reste cohérent avec celui de l'environnementToday, augmented images are parts of our daily life. From movie industry to video games through architecture and object design, many applications need to display synthetic objects into a real context. However, coherently integrating objects in their environment may be a difficult task. When the environment is vast or includes complex geometry or lighting, its modelling is tedious and using its model to render augmented images is resource-consuming. Moreover, applications like augmented reality need efficient real-time rendering. They also have to automatically adapt to unmodelled environments, while progressively acquiring data from incoming images. In this thesis, we based our work on computer vision, image-based modelling and rendering methods to propose a global approach to the problem of progressively discovered and complex environment coherent augmentation. We first develop new acquisition methods to get high dynamic range RGB+Z registered images of the environment. Then we explain how to use these informations to incrementally build models of scene geometry and lighting. Finally, we provide new rendering approaches using these models and suitable for an efficient and photometrically coherent image augmentation
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Willis, Karl D. D. "Ubiquitous Projection: New Interfaces using Mobile Projectors." Research Showcase @ CMU, 2013. http://repository.cmu.edu/dissertations/216.
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The miniaturization of projection technology has enabled a new class of lightweight mobile devices with embedded projectors. Projection engines as small as a postage stamp are currently being embedded in thousands of mobile devices. Mobile projector-based devices differ in very fundamental ways from the display-based devices we commonly use. Mobile projectors can be carried with the user and project imagery into almost any space, projected content is visible to multiple users and supports social interaction, physical objects and surfaces can be augmented with projected content, and embedded projectors can enable new form-factors for mobile displays.
This research investigates the potential of mobile projectors as a new platform for human-computer interaction. I aim to demonstrate that the unique affordances created by the miniaturization of projection technology can inspire new and compelling interaction with single-users, multi-users, the environment, and projector-embedded objects. This research presents a comprehensive survey of mobile projector-based interaction – documenting interaction with historic projection devices; introducing novel interaction techniques, metaphors, and principles for mobile projector-based systems; providing implementation details of functional prototype devices using mobile projectors; presenting technical innovations, such as the development of specialized projectors and custom marker tracking algorithms; and detailing results from preliminary user testing with the prototype systems created. This research forms a systematic investigation of the past, the present, and a possible future for interaction using mobile projectors.
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Richter, Jiří. "Rozšířená realita pro deskovou karetní hru." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2018. http://www.nusl.cz/ntk/nusl-385935.
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Cílem této práce je vytvořit systém, který bude vylepšovat zážitek z hraní deskových a především karetních her, promítáním relevantních multimediálních informací do herního prostoru. V první části jsou popsány přínosy deskových a karetních her. Dále jsou představeny principy rozšířené reality a jejich použití při návrhu takového systému. Navržený systém je rozdělen na tři moduly. Prvním z nich je modul, který analyzuje stav hry na stole v reálném světe --- poskytuje informace o aktivitě hráčů a jaké typy herních objektů se vyskytují na stole. Druhým je modul, který se stará o řízení celého systému, poskytuje uživatelské rozhraní pro kalibraci systému a implementuje stavový prostor hry, pro kterou je systém určen. Třetím je modul, který poskytuje výstup systému --- vytváří multimediální obsah, který je po-té promítnut na stůl, a je relevantní k aktuálnímu stavu hry. Na závěr je navržený systém implementován pro karetní hru Bang, otestována jeho schopnost udržovat krok se stavem hry v reálném světě a provedeno testování na uživatelích.
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García, Pañella Oscar. "General Dynamic Surface Reconstruction: Application to the 3D Segmentation of the Left Ventricle." Doctoral thesis, Universitat Ramon Llull, 2004. http://hdl.handle.net/10803/9162.
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Aquesta tesi descriu la nostra contribució a la reconstrucció tridimensional de les superfícies interna i externa del ventricle esquerre humà. La reconstrucció és un primer procés dins d'una aplicació global de Realitat Virtual dissenyada com una important eina de diagnòstic per a hospitals. L'aplicació parteix de la reconstrucció de les superfícies i proveeix a l'expert de manipulació interactiva del model en temps real, a més de càlculs de volums i de altres paràmetres d'interès. El procés de recuperació de les superfícies es caracteritza per la seva velocitat de convergència, la suavitat a les malles finals i la precisió respecte de les dades recuperades. Donat que el diagnòstic de patologies cardíaques requereix d'experiència, temps i molt coneixement professional, la simulació és un procés clau que millora la eficiència.Els nostres algorismes i implementacions han estat aplicats a dades sintètiques i reals amb diferències relatives a la quantitat de dades inexistents, casuístiques presents a casos patològics i anormals. Els conjunts de dades inclouen adquisicions d'instants concrets i de cicles cardíacs complets. La bondat del sistema de reconstrucció ha estat avaluada mitjançant paràmetres mèdics per a poder comparar els nostres resultats finals amb aquells derivats a partir de programari típic utilitzat pels professionals de la medicina.
A més de l'aplicació directa al diagnòstic mèdic, la nostra metodologia permet reconstruccions de tipus genèric en el camp dels Gràfics 3D per ordinador. Les nostres reconstruccions permeten generar models tridimensionals amb un baix cost en quant a la interacció manual necessària i a la càrrega computacional associada. Altrament, el nostre mètode pot entendre's com un robust algorisme de triangularització que construeix superfícies partint de núvols de punts que poden obtenir-se d'escàners làser o sensors magnètics, per exemple.
Esta tesis describe nuestra contribución a la reconstrucción tridimensional de las superficies interna y externa del ventrículo izquierdo humano. La reconstrucción es un primer proceso que forma parte de una aplicación global de Realidad Virtual diseñada como una importante herramienta de diagnóstico para hospitales. La aplicación parte de la reconstrucción de las superficies y provee al experto de manipulación interactiva del modelo en tiempo real, además de cálculos de volúmenes y de otros parámetros de interés. El proceso de recuperación de las superficies se caracteriza por su velocidad de convergencia, la suavidad en las mallas finales y la precisión respecto de los datos recuperados. Dado que el diagnóstico de patologías cardíacas requiere experiencia, tiempo y mucho conocimiento profesional, la simulación es un proceso clave que mejora la eficiencia.
Nuestros algoritmos e implementaciones han sido aplicados a datos sintéticos y reales con diferencias en cuanto a la cantidad de datos inexistentes, casuística presente en casos patológicos y anormales. Los conjuntos de datos incluyen adquisiciones de instantes concretos y de ciclos cardíacos completos. La bondad del sistema de reconstrucción ha sido evaluada mediante parámetros médicos para poder comparar nuestros resultados finales con aquellos derivados a partir de programario típico utilizado por los profesionales de la medicina.
Además de la aplicación directa al diagnóstico médico, nuestra metodología permite reconstrucciones de tipo genérico en el campo de los Gráficos 3D por ordenador. Nuestras reconstrucciones permiten generar modelos tridimensionales con un bajo coste en cuanto a la interacción manual necesaria y a la carga computacional asociada. Por otra parte, nuestro método puede entenderse como un robusto algoritmo de triangularización que construye superficies a partir de nubes de puntos que pueden obtenerse a partir de escáneres láser o sensores magnéticos, por ejemplo.
This thesis describes a contribution to the three-dimensional reconstruction of the internal and external surfaces of the human's left ventricle. The reconstruction is a first process fitting in a complete VR application that will serve as an important diagnosis tool for hospitals. Beginning with the surfaces reconstruction, the application will provide volume and interactive real-time manipulation to the model. We focus on speed, precision and smoothness for the final surfaces. As long as heart diseases diagnosis requires experience, time and professional knowledge, simulation is a key-process that enlarges efficiency.
The algorithms and implementations have been applied to both synthetic and real datasets with differences regarding missing data, present in cases where pathologies and abnormalities arise. The datasets include single acquisitions and complete cardiac cycles. The goodness of the reconstructions has been evaluated with medical parameters in order to compare our results with those retrieved by typical software used by physicians.
Besides the direct application to medicine diagnosis, our methodology is suitable for generic reconstructions in the field of computer graphics. Our reconstructions can serve for getting 3D models at low cost, in terms of manual interaction and CPU computation overhead. Furthermore, our method is a robust tessellation algorithm that builds surfaces from clouds of points that can be retrieved from laser scanners or magnetic sensors, among other available hardware.
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Le, Noury Peter. "It’s out of this world: exploring the use of virtual reality technology for enhancing perceptual-cognitive skill in tennis." Thesis, 2021. https://vuir.vu.edu.au/42798/.
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The aim of this thesis was to increase our understanding of how virtual reality (VR) can be applied to assess and train pattern recognition and decision-making skill in sport, specifically the sport of tennis. There has been a growing interest in using VR for training perceptual- cognitive skill in sport; however, for VR training to effectively simulate real-world performance, it must recreate the contextual information and movement behaviours present in the real-world environment. Although it is well established that skilled performers can effectively use prior sources of contextual information to enhance anticipation performance compared to lesser skilled performers, little is known about the relative difficulty of identifying different types of contextual information and the requisite regularity of patterns to influence anticipation. Moreover, there is a lack of research assessing the effect of using more representative experimental tasks on anticipation and decision-making behaviour. Therefore, study one of this thesis assessed the representativeness of VR for simulation of tennis performance. Participants included 28 skilled tennis players aged between 12 to 17 years (M = 14.4, SD = 1.6). Participants sense of presence was assessed VR, and participants movement behaviours were compared when playing tennis in VR and real-world environments. The results showed that when performing groundstrokes, participants frequently used the same stance in VR as they did in the real-world condition and experienced a high sense of presence. Study two of this thesis used VR to assess the ability of 28 skilled tennis players aged between 13 and 18 years (M = 15.7, SD = 1.4) to identify two specific serving patterns being used by opponents. These serving patterns related to the opponent’s action tendencies, with a wide serve pattern connected to the side of the court the point started from (advantage side), and a tee serve pattern connected to the point score in the game (0-0). Participants were assessed on their ability to identify serving patterns by controlling how frequently patterns occurred during matches. Results revealed that patterns need to occur at high frequencies (100% of the time) during matches for skilled juniors to utilise this information to inform their anticipation responses. Study three of this thesis used VR to train 5 skilled tennis players aged between 14 and 18 years (M = 16, SD = 1.67) to utilise patterns of play when they occur at lower frequencies (80% of the time). Additionally, the influence of explicit instructions and no-instruction on learning and performance under pressure was assessed. It was found that exposure to patterns coupled with explicit instructions resulted in faster changes to response time and response accuracy performance, compared to no-instruction learning. Furthermore, instructions during training did not affect performance under pressure conditions. Overall, this thesis extends the perceptual-cognitive skill literature through its use of VR technology and methods of assessing task representativeness. Moreover, this thesis helps guide the design of future perceptual-cognitive skill research through the manipulation of contextual information in the VR environment and use of more implicit and explicit instructional methods to train decision-making performance.
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Chen, Cheng-Wei, and 陳政瑋. "Study of Mobile Locating for Augmented Reality Games." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/229jhs.
Full textAbstract:
碩士國立臺中科技大學
多媒體設計系碩士班
105
Mobile devices have features that incorporate many hardware components, such as lenses, wireless transceiver, acceleration sensor, and digital compass. With these features, the developers can develop more applications. This is thesis aimed at the research of mobile location technology for the augmented reality games. The feasibility of this study is quite extensive, and it is the popular technology. Nowadays, there is no application integrating the game navigation into the augmented reality game. Therefore, this thesis will propose the use of magnetometer to navigate the augmented reality games with the Google Map and a digital compass. The results show the perfect effectiveness of the proposed method.
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(8793044), Chengyuan Lin. "Lightweight and Sufficient Two Viewpoint Connections for Augmented Reality." Thesis, 2020.
Find full textAbstract:
Augmented Reality (AR) is a powerful computer to human visual interface that displays data overlaid onto the user's view of the real world. Compared to conventional visualization on a computer display, AR has the advantage of saving the user the cognitive effort of mapping the visualization to the real world. For example, a user wearing AR glasses can find a destination in an urban setting by following a virtual green line drawn by the AR system on the sidewalk, which is easier to do than having to rely on navigational directions displayed on a phone. Similarly, a surgeon looking at an operating field through an AR display can see graphical annotations authored by a remote mentor as if the mentor actually drew on the patient's body.
However, several challenges remain to be addressed before AR can reach its full potential. This research contributes solutions to four such challenges. A first challenge is achieving visualization continuity for AR displays. Since truly transparent displays are not feasible, AR relies on simulating transparency by showing a live video on a conventional display. For correct transparency, the display should show exactly what the user would see if the display were not there. Since the video is not captured from the user viewpoint, simply displaying each frame as acquired results in visualization discontinuity and redundancy. A second challenge is providing the remote mentor with an effective visualization of the mentee's workspace in AR telementoring. Acquiring the workspace with a camera built into the mentee's AR headset is appealing since it captures the workspace from the mentee's viewpoint, and since it does not require external hardware. However, the workspace visualization is unstable as it changes frequently, abruptly, and substantially with each mentee head motion. A third challenge is occluder removal in diminished reality. Whereas in conventional AR the user's visualization of a real world scene is augmented with graphical annotations, diminished reality aims to aid the user's understanding of complex real world scenes by removing objects from the visualization. The challenge is to paint over occluder pixels using auxiliary videos acquired from different viewpoints, in real time, and with good visual quality. A fourth challenge is to acquire scene geometry from the user viewpoint, as needed in AR, for example, to integrate virtual annotations seamlessly into the real world scene through accurate depth compositing, and shadow and reflection casting and receiving.
Our solutions are based on the thesis that images acquired from different viewpoints should not always be connected by computing a dense, per-pixel set of correspondences, but rather by devising custom, lightweight, yet sufficient connections between them, for each unique context. We have developed a self-contained phone-based AR display that aligns the phone camera and the user by views, reducing visualization discontinuity to less than 5% for scene distances beyond 5m. We have developed and validated in user studies an effective workspace visualization method by stabilizing the mentee first-person video feed through reprojection on a planar proxy of the workspace. We have developed a real-time occluder in-painting method for diminished reality based on a two-stage coarse-then-fine mapping between the user and the auxiliary view. The mapping is established in time linear with occluder contour length, and it achieves good continuity across the occluder boundary. We have developed a method for 3D scene acquisition from the user viewpoint based on single-image triangulation of correspondences between left and right eye corneal reflections. The method relies on a subpixel accurate calibration of the catadioptric imaging system defined by two corneas and a camera, which enables the extension of conventional epipolar geometry for a fast connection between corneal reflections.
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Chen, Tzu-Hsuan, and 陳子軒. "Innovative Interactive Model Design of Augmented Reality Puzzle Games." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/nbd6b5.
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碩士國立彰化師範大學
資訊管理學系
107
Augmented reality is a novel visual rendering technology that overlays virtual objects with the real world to create a mixed environment. Through the interactive design mechanism between users and virtual/real objects or scenes, AR can create an entertainment experience different from traditional digital games. It also can presents information in a more intuitive way to the real world around users. It can not only be used for games but also for other non-gaming areas such as education, medical, health, business, and training. Puzzle-Solving is the core mechanism of many games. The interaction of augmented reality puzzle games provide players a novel and entertaining experience of exploring and satisfying curiosity in a virtual and mixed environment. Although augmented reality has become increasingly popular recently, the research on how users can interact with the virtual objects and real scenes to create a seamless puzzle game environment is still rare and lacks lacks systematic discussion. Most augmented reality studies are biased to-wards real-world visual imaging techniques. It is extremely rare to see related research at the interaction level and most AR interaction models are biased towards single manipulation and feedback. It lacks of innovative interaction model design. TRIZ (Altshuller, 1997) is an innovative theory often used in the in-dustry to train employees to improve their creative thinking skills. In recent years, there has also been research on the application of TRIZ theory in game desgin. MDA (Hunicke, LeBlanc, & Zubek, 2004) is one of the most widely used formal methods for game analysis. The MDA game architecture divides the composition of the game into Mechanics, Dynamics, and Aesthetics. It suggests fun games should be designed from both perspective of players and designers. Therefore, this study “Innovative Interactive Model Design of Augmented Reality Puzzle Games” adopts the forty innovation rules of TRIZ theory and MDA framework as a foundation to design five innovate interactive models for augmented reality puzzle games. Our innovative interaction design model enables players interact with the virtual objects and real scenes seamlessly to create a new entertainment experience. Based on novel interaction models, we have designed and developed a “Meaningful Alternate Reality Game Learning System for the Mental Health of Adolescents”. This enables players can play and solve puzzles cooperatively to unfold the story using our innovative AR interaction models in a room-escape like game environment. The empirical results of our experimental study indicated that most of the subjects had positive comments on the six aspects of the system, including look and feel of the overall system, system operation perception, system operation perception, system stability perception, system interesting perception, and system creative perception. The feasibility of the innovative interaction model was confirmed.
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Piekarski, Wayne. "Interactive 3d modelling in outdoor augmented reality worlds." 2004. http://arrow.unisa.edu.au:8081/1959.8/25005.
Full textAbstract:
This dissertation presents interaction techniques for 3D modelling of large structures in outdoor augmented reality environments. Augmented reality is the process of registering projected computer-generated images over a user's view of the physical world. With the use of a mobile computer, augmented reality can also be experienced in an outdoor environment. Working in a mobile outdoor environment introduces new challenges not previously encountered indoors, requiring the development of new user interfaces to interact with the computer. Current AR systems only support limited interactions and so the complexity of applications that can be developed is also limited. This dissertation describes a number of novel contributions that improve the state of the art in augmented reality technology.thesis (PhD)--University of South Australia, 2004.