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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

ProGes: A User Interface for Multimedia Devices over the Internet of Things

Ahmadi Danesh Ashtiani, Ali January 2014 (has links)
With the rapid growth of online devices, a new concept of Internet of Things (IoT) is emerging in which everyday devices will be connected to the Internet. As the number of devices in IoT is increasing, so is the complexity of the interactions between user and devices. There is a need to design intelligent user interfaces that could assist users in interactions. Many studies have been conducted on different interaction techniques such as proxemic and gesture interaction in order to propose an intuitive and intelligent system for controlling multimedia devices over the IoT, though most could not propose a universal solution. The present study proposes a proximity-based and gesture-enabled user interface for multimedia devices over IoT. The proposed method employs a cloud-based decision engine to support user to choose and interact with the most appropriate device, reliving the user from the burden of enumerating available devices manually. The decision engine observes the multimedia content and device properties, learns user preferences adaptively, and automatically recommends the most appropriate device to interact. In addition to that, the proposed system uses proximity information to find the user among people and provides her/him gesture control services. Furthermore, a new hand gesture vocabulary is proposed for controlling multimedia devices through conducting a multiphase elicitation study. The main advantage of this vocabulary is that it can be used for all multimedia devices. Both device recommendation system and gesture vocabulary are evaluated. The device recommendation system evaluation shows that the users agree with the proposed interaction 70% of the times. Moreover, the average agreement score of the proposed gesture vocabulary (0.56) exceeds the score of similar studies. An external user evaluation study shows that the average score of being a good-match is 4.08 out of 5 and the average of ease-of-performance equals to 4.21 out of 5. The memory test reveals that the proposed vocabulary is easy to remember since participants could remember and perform gestures in 3.13 seconds on average. In addition to that, the average accuracy of remembering gestures equals to 91.54%.
2

Vers un système d'assistance à l'interaction 3D pour le travail et le télétravail collaboratif dans les environnements de réalité virtuelle et augmentée / Towards an assistance system for 3D interaction dedicated to work and collaborative telework in virtual and augmented reality environments

Ouramdane, Nassima 25 November 2008 (has links)
La réalité virtuelle est une discipline qui se situe à la croisée de plusieurs domaines tels que l’infographie, la simulation, la téléopération, le travail collaboratif, etc. L'interaction 3D est la composante motrice de la réalité virtuelle. Elle permet à l'utilisateur d'interagir avec les entités de l'environnement virtuel. Il existe différentes techniques d'interaction 3D qui sont dédiées aux différentes tâches d’interaction 3D à savoir la navigation, la sélection, la manipulation et le contrôle d’application. En général, la technique utilisée cherche à accomplir une tâche d'interaction 3D sans prendre en considération les exigences des environnements dédies pour la téléopération et les environnements collaboratifs. Les tâches de téléopération doivent respecter un certain nombre de contraintes, qui sont : des sélections et des manipulations sécurisées et précises. Les environnements collaboratifs sont des mondes dans lesquels les utilisateurs interagissent ensemble pour réaliser des tâches communes. La complexité de ces environnements est liée à l'interaction d'un groupe d'utilisateurs avec des entités partagées. L’objectif de ce travail est de modéliser, de concevoir, d’implémenter et d’évaluer un système d’assistance à l’interaction 3D mono-utilisateur et multi-utilisateurs. Notre concept est centré sur l’utilisateur et ses intérêts dans le monde virtuel, il est basé sur le principe d’anticipation du geste de l’utilisateur par l’assistance de ce dernier. Notre système d’assistance peut être considéré comme un moyen de contourner les limitations de certaines techniques d’interaction 3D classiques afin de les rendre utilisables dans des contextes différents. / Virtual Reality is a research domain that is situated at the crossing of several domains as infography, simulation, teleoperation, collaborative work, etc. The 3D interaction is a core component of virtual reality. It allows the user to interact with the entities of the virtual environment. There exists different 3D interaction techniques that are dedicated to the different tasks of 3D interaction that are navigation, selection, manipulation and command control. In most cases, the 3D interaction techniques are only used to perform one of the 3D interaction tasks without taking into account the requirements of complex environments such as teleoperation environments and collaborative environments. Teleoperation tasks are complex tasks and must fulfill some constraints that are : very precise seizures of objects and secure selections and manipulations. The collaborative environments are worlds in which users interact between them to accomplish goals together. The complexity of these environments is related to the interaction of a group of users with shared entities. The aim of this work is to model, conceive, implement and evaluate our 3D interaction assistance system for mono and multi users. Our study is centred on the user and its interests in the virtual world. The concept of this study is based on the principle of anticipation of the user’s gesture by the assistance him. Our 3D interaction assistance system is considered as a mean to bypass the limitations of some 3D interaction classical techniques in order to make them usable in different contexts.
3

L'interaction 3D adaptative : une approche basée sur les méthodes de traitement de données multi-capteurs / Adaptive 3D interaction : an approach based on multi-sensor data processing

Boudoin, Pierre 06 October 2010 (has links)
La réalité virtuelle est un domaine touchant à plusieurs disciplines. Par le biais de l’interaction 3D l’Homme peut accomplir des tâches dans un environnement virtuel en utilisant des techniques d’interaction 3D. Ces techniques sont souvent mono-tâches et s’appuient sur l’utilisation de matériel de réalité virtuelle bien spécifique. Le passage d’une tâche de l’interaction 3D à une autre est le plus souvent à la charge de l’utilisateur,ou bien du programmeur. Cependant de nombreux problèmes sont présents dans ces systèmes, dits de réalité virtuelle. En effet, des problèmes matériels le plus souvent dû aux technologies utilisées sont présents et peuvent induire un comportement erratique du système. De plus, il peut arriver que les techniques d’interaction 3D ne soient pas adaptées à l’application de réalité virtuelle, ou que celles-ci soient trop complexes à utiliser pour le novice. Tous ces problèmes nuisent à l’immersion de l’être humain dans l’environnement virtuel ainsi qu’aux performances de l’interaction 3D et donc à l’accomplissement de la tâche dans l’application de réalité virtuelle.L’objectif de ce travail est de proposer un système d’interaction 3D adaptative. Par interaction3D adaptative, on cherche à définir une interaction 3D qui soit continue tant au niveau des données qu’au basculement d’une tâche à l’autre. Nous avons donc modélisé et conçu un ensemble de composants pour accomplir cet objectif. Nous avons modélisé une technique d’interaction 3D pouvant être utilisé de manière continue même lors du basculement d’une tâche. Nous avons également conçu un système qui permet d’automatiser le basculement d’une tâche de l’interaction 3D vers une autre en estimant la tâche que souhaite accomplir l’utilisateur. Enfin, un dernier composant a pour rôle d’améliorer la précision et de garantir la continuité du tracking. / Virtual reality is a field involving multiple disciplines. Through the 3D interaction ofwe can perform tasks in a virtual environment using 3D interaction techniques. These techniques are often mono-task and are based on the use of specific virtual reality devices.The transition from a 3D interaction task to another is usually to the responsibility ofthe user, or programmer. Indeed, due to the technologies used, hardware problems are present and can induce erratic behaviors from the system. Moreover, it may happen that 3D interaction techniques are not suited to the application of virtual reality, or that they are too complex to use for the novice. All these problems affect the immersion of the user in the virtual environment and the performance of 3D interaction and thus, to accomplish the task in virtual reality application.The aim of this work is to propose an adaptive 3D interaction system. Adaptive 3Dinteraction, defines a 3D interaction thas is continuous in terms of data and switching from one task to another. So we have modeled and designed a set of components to accomplish this goal. We designed a 3D interaction technique which, can be used continuously even when switching to a task. We have also designed a system that automates the switch from a 3D interaction task to another task by estimating the task that the userwants to accomplish. The last component’s role is to improve accuracy and ensure thecontinuity of tracking data.
4

Interaction en réalité mixte appliquée à l'archéologie sous-marine / Interaction in mixed reality applied to underwater archeology

Haydar, Mahmoud 08 December 2011 (has links)
L’intérêt porté par l’archéologie à la réalité virtuelle est croissant. La réalité virtuelle est devenue un outil nécessaire pour l’exploration et l’étude des sites archéologiques, et plus particulièrement, les sites archéologiques sous-marins qui se révèlent parfois difficile d’accès. Les études actuelles proposent des solutions en réalité virtuelle ou en réalité augmentée sous forme d’environnements virtuels avec une interaction virtuelle et/ou augmentée mais aucune étude n’a vraiment essayé de comparer ces deux aspects de l’interaction. Nous présentons dans ce mémoire trois environnements en réalité virtuelle et un environnement en réalité augmentée où nous proposons des nouvelles méthodes d’interaction. Ainsi, nous évaluons leurs fonctionnalités d’un point de vue archéologique, nous étudions l’influence du niveau d’immersion sur les performances de l’interaction et nous réalisons une comparaison entre l’interaction en réalité virtuelle et en réalité augmentée. / The interest in archeology virtual reality is growing. Virtual reality has become a necessary tool for exploration and study of archaeological sites, and more specifically, the underwater archaeological sites that sometimes prove difficult to access. Current studies suggest solutions in virtual reality or augmented reality in the form of virtual environments with virtual interaction and/or augmented interaction but no studies have really tried to compare these two aspects of interaction. We present in this thesis three environments in virtual reality and an environment in augmented reality when we propose new methods of interaction. Thus, we evaluate their archaeological functionality, we study the influence of level of immersion on performance of the interaction and we make a comparison between interaction in virtual reality and interaction in augmented reality.
5

Role variability as a function of the understanding of others

Meltzer, Malcolm L. January 1957 (has links)
Thesis--Catholic University of America. / Bibliography: p. 74-77.
6

Augmented Reality Applications for Industrial Robots

Löfvendahl, Björn January 2014 (has links)
Augmented reality (AR) is a way of overlaying digital information onto a picture or a videofeed and has been used in industrial contexts for more than 20 years. This Master's Thesis examines if AR can be used to help maintenance engineers set up and maintain robot environments by visualizing robot movement and safety zones. The main result of the Master's Thesis is a prototype application for a tablet computer. The user points the tablet towards a robot filming it and the video feed is displayed on the screen. This video feed is augmented with a virtual zone displayed around the robot, illustratingthe area where the robot is allowed to move. The application fetches the coordinatesfor the zone from the safety system SafeMove { a system designed by ABB to increase safetyand allow closer human-robot collaboration.The visualization of a SafeMove conguration is currently limited to an image of atwo-dimensional coordinate system showing the zone as a set of dierent coordinates. Thismakes it dicult grasping the full layout of the three-dimensional zone. By using theapplication the user gets a better view of the layout, allowing the user to look at the robot from different sides and see the safety zone projected around the robot. User tests show that people working with SafeMove could benefit from using the application to verify the conguration of SafeMove systems and the conclusion is that AR, if used right, greatly can improve robot interaction and maintenance.
7

Digital screen for appointments and employees

Berglund, Anton January 2014 (has links)
With a digital screen a company can provide a simple way to inform its employees and visitors about what is going on at the oce. The company KnowitAB wished to be able to display upcoming events through such a digital screen.This thesis describes how a solution was designed and implemented to suit the needs of the company.By using the design process a web based solution was built able to display events retrieved from the company's Exchange server on a digital screen. The solution was also built as a web site, making it accessible from outside the office so that employees can look up information on the go. The resulting solution is going to be installed in Knowit's office in Umeå, with a future vision of installing it in several other Knowit offices.
8

Designing the Mobile Web: Guidelines for User Interactionand Experience

Ring, Lisa January 2013 (has links)
The area of mobile web is evolving rapidly but there are still no consensus regarding recommendations or best practices within the topic. Therefore this thesis is focused on interaction design within mobile web and compiles many dierent theories into guidelines for mobileweb design. The thesis may also be used as a foundation when deciding whether to developa native mobile application or a mobile adapted web application, or when choosing betweena separate mobile web application and a responsive web design.Components that are especially considered in this thesis are form elements and navigation menus. These are discussed relative to interaction on small touch screens such as smartphones and tablets. For example, text input elements can be optimized for the intended input format and one can take advantage of the device's native components for e.g. time and date input. A prototype of a responsive web application is also developed to further exemplify the theoretical theories. This is a exploratory study for the Swedish magazine Resume in collaboration with The Mobile Life and is focused on convert the original site into a responsive design, but still retain the overall Resume look and feel.
9

Facilitating the Information Exchange Between Parents and Personnel at Preschools by Gathering Quantitative Data

Markus, Johansson January 2014 (has links)
The information exchange between parents and personnel at preschools is held informally and mainly when the child is departed from the preschool. Interviews with parents and personnel at preschools were made to find out what this exchange consists of, what factors affect it, and if there are parts that may be improved by making them digital. Through these interviews, the information need was extracted and analyzed, and factors affecting the information exchange were identified. Parts of these findings where compiled into asoftware idea as an extension to the software for preschools provided by Tempus Information Systems ab, where this master’s thesis was conducted.Requirements for the software were gathered and prioritized. Prototypes were made,tested, and evaluated leading to the development of a web application. The application supports input of chosen parts of the information need in order to make it accessible forparents. It is intended to be used by the personnel and to run on a tablet mounted on thewall, helping their everyday tasks, as well as being a service to parents of smaller children. This information could then be retrieved by the parents when the child is departed from theTempus Touch software at the preschool, thus freeing the information exchange to qualitative matters about the child’s well-being. It could also be accessible through the Tempus web or mobile application while at home.
10

Big Data - Small Device: AMobile Design Concept fo rGeopolitical Awareness when Traveling

Sonning, Sabina January 2013 (has links)
This work explores an application concept for small mobile devices, displaying structured "Big Data" based on human web reporting. The target user is a traveler interested in geopolitical events in the visited region and the concept focuses on high level signals to describethe situation and allows for following up, down to original reporting sources. Interviews and a survey was used to investigate the target user group's current behavior and needs while traveling and in unstable regions. The design process is described in reference to interaction design practices and successful applications on the market today, resulting in aconcept presented in the form of high fidelity sketches, well documented interaction style and transitions, and a clickable low delity prototype. The work can be used as a reference document for further development.

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