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Academic literature on the topic 'Réalité augmentée – Systèmes d'information géographique'
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Dissertations / Theses on the topic "Réalité augmentée – Systèmes d'information géographique"
Hugues, Olivier. "Réalité augmentée pour l'aide à la navigation. SIGMA : Système d'information Géographique Maritime Augmentée." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2011. http://tel.archives-ouvertes.fr/tel-00655018.
Full textSt-Aubin, Bruno. "Vers le développement d'un système interactif et collaboratif de réalité augmentée géospatiale pour des applications en design urbain." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28265/28265.pdf.
Full textOver the years, the usefulness of geospatial data, in any given field, has been well established and countless innovations in the usage of such data have appeared. However, traditional geomatic tools used for the exploitation of data, despite their remarkable technological evolution in recent years, still contain certain limits concerning 3D visualization, interaction and their collaboration capacity that can limit spatial comprehension by a public of non-expert users. To overcome these limits, augmented reality technologies demonstrate interesting possibilities regarding the interaction and visualization of 3D geospatial data. In spite of the recent technological advances, these types of applications remain poorly explored, especially in geospatial contexts. Consequently, the development of geospatial augmented reality systems remains a laborious and experimental process. Considering this, we propose a study to establish the basis for the development of geospatial interactive and collaborative augmented reality systems. We have chosen to inscribe this study in the urban design and planning context, a domain of application for which the interaction and visualization of space plays a central role. The first part of this study presents the results of our literary and conceptual research, undertaken prior to the development of our prototype. The second part presents the prototype developed following the Unified Process methodology for software development as well as the results of the prototype experimentation step conducted afterwards. This research project completed, it appears obvious to us that augmented reality presents an interesting potential to overcome the limits of traditional geomatic tools. However, the realization of a complete solution would require the intervention of a larger pool of resources that are unavailable in the scope of a master’s project.
Hugues, Olivier. "Réalité augmentée pour l’ aide à la navigation." Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14428/document.
Full textThis thesis was carried out under CIFRE partnership between the MaxSea company and the research ESTIA laboratory. The initial request made by the company referred to the need to improve safety on ships. This research thesis are at the crossroads of several areas such as Augmented Reality, Virtual Reality, geographic information systems, software engineering, image processing and social sciences. The first axis concerns the contributions to the improvement of knowledge in the field of augmented reality. In this chapter we present the foundations of augmented reality. We propose, based on our definitions and the work in virtual reality, our model of interaction and immersion in augmented reality, named 3i2RA.The next axis is used to specify the issues related to the use of navigational aids. The third axis presents our methodological contributions in the design of an aid to navigation. The goal is to provide a method for interfacing modeling activities and a method of agile software development. To illustrate our method, we present a practical design of a geographic information system for the navigation aid for which we approached the National Society Rescue Sea (SNSM).The last line shows our technological approach to achieve the required functionality. We will present in this section the software architecture based on three main components and the hardware architecture of our Geographic Information System Enhanced Maritime, SIGMA. We present a use case of SIGMA for traffic monitoring
Liu, Ruijun. "Construction de SIG3D à partir d'images et de contraintes cartographiques dans un contexte de réalité augmentée." Ecole centrale de Nantes, 2012. http://www.theses.fr/2012ECDN0037.
Full textGIS (Geographical Information Systems) need several models to solve urban planning and management issues, among them are 2D and 3D geometric models. Integration of 3D information in GIS raises usual database challenges like 3D data modeling, acquisition and representation of the 3D information. The acquisition process confronts two different problems: first, how to extract enough information from the environment, such as a series of images or a video, this process also includes the localization of the information (known as geo-referencing); secondly, how to insert the 3D information into the GIS in an Augmented-Reality context. We present a method to insert 3D information aiming at enriching 3D-GIS. The first step is 3D structure information extraction. A street-view video sequence is captured. Then we extract 3D original feature points from the input video data by using Structure-from-Motion (SfM) technique and filter the outliers making benefit of GIS data. The second step is to reconstruct the buildings with computer vision techniques. We propose an automatic facades reconstruction algorithm, including splitting facades, computing the height of facades and facades rendering. Then we design the interactions to improve the results of automatic reconstruction. The last step is GIS updating. The existing old footprints are corrected by user knowledge or new footprints are generated. Finally, we insert or update 3D information into the GIS
Michel, Thibaud. "On mobile augmented reality applications based on geolocation." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAM068/document.
Full textApplications for augmented reality can be designed in various ways, but few take advantage of geolocation.However, nowadays, with the many cheap sensors embedded in smartphones and tablets, using geolocation for augmented reality (Geo AR) seems to be very promising.In this work, we have contributed on several aspects of Geo AR: estimation of device positioning and attitude, and the impact of these estimations on the rendering of virtual information.In a first step, we focused on smartphone attitude estimation.We proposed the first benchmark using a motion lab with a high precision for the purpose of comparing and evaluating filters from the literature on a common basis.This allowed us to provide the first in-depth comparative analysis in this context.In particular, we focused on typical motions of smartphones when carried by pedestrians.Furthermore, we proposed a new technique for limiting the impact of magnetic perturbations with any attitude estimation algorithm used in this context.We showed how our technique compares and improves over previous works.In a second step, we studied the estimation of the smartphone's position when the device is held by a pedestrian.Altough many earlier works focused on evaluation of localisation systems, it remains very difficult to find a benchmark to compare technologies in the setting of a commodity smartphone. Once again, we proposed a novel benchmark to analyse localisation technologies including WiFi fingerprinting, WiFi trilateration, SHS (Step and Heading System) and map-matching.In a third step, we proposed a method for characterizing the impact of attitude and position estimations on the rendering of virtual features.This made it possible to identify criteria to better understand the limits of Geo AR for different use cases.We finally proposed a framework to facilitate the design of Geo AR applications.We show how geodata can be used for AR applications.We proposed a new semantics that extends the data structures of OpenStreetMap.We built a viewer to display virtual elements over the camera livestream.The framework integrates modules for geolocation, attitude estimation, POIs management, geofencing, spatialized audio, 2.5D rendering and AR.Three Geo AR applications have been implemented using this framework.TyrAr is an application to display information on mountain summits and cities around the user.AmiAr allows one to monitor lights, shutters, tv in a smart appartment.Venturi Y3 is an AR-Tour of Grenoble with audio description and experiences
Kammoun, Slim. "Assistance à la navigation pour les non-voyants : vers un positionnement, un SIG et un suivi adaptés." Toulouse 3, 2013. http://thesesups.ups-tlse.fr/2035/.
Full textNavigation, especially in unknown areas, is a major problem for the visually impaired (VI). Over the past 50 years, a number of electronic travel aids (ETAs) have been developed with the aim of improving mobility of the VI. Despite many research efforts, these systems are rarely used. Although the explanation is likely to be incomplete, it is possible to identify three important factors : (1) positioning accuracy provided by these devices is not sufficient to guide a VI pedestrian, (2) these systems are based on Geographical Information Systems not adapted to pedestrian mobility, and (3) the guidance methods should be adapted to the task of VI pedestrian wayfinding. All these three components are sources of usability issues. In this thesis, committed in the collaborative research project called NAVIG, we present the design and implementation of an electronic navigation aid for the blind. In this work, we relied on the analysis of the needs of the visually impaired to propose solutions for improving positioning and guidance. First, we present a solution based on real-time fusion of A-GPS and embedded artificial vision positioning signals. The benefit of our device is two-fold : 1/ it provides a more accurate positioning, compatible with Blind mobility and guidance ; 2/ it matches the needs of Blind users in terms of space perception. Second, we define a classification of objects that should be included in every geographical information system (GIS) that is used in a navigation aid. This classification was based on multiple brainstorming and interviews with blind people and orientation and mobility (O&M) instructors. We present a database scheme integrating the principal classes proposed in this classification. We also propose a methodology allowing the selection of the most appropriate route, based on user needs, and relying on the proposed classification of geographical data. Finally, regarding pedestrian tracking, we propose 3 new strategies adapted to pedestrian navigation. The evaluation of those strategies was performed into a virtual environment framework. To do so, we designed a multimodal (input and output) Virtual Environment (VE) that simulates different interactions that could be used for space perception and guidance in an ETA. This platform subserves two goals : help designers to systematically test guidance strategies (i. E. For the development of new ETAs) and train blind people to use interactive ETAs, with an emphasis on cognitive mapping enhancement. Using this platform we performed several evaluations with 16 users to define the best tracking strategies. To conclude, the combined positioning (vision, GPS) was successfully evaluated in two real environments (Toulouse University campus, and a district in the Toulouse center). Results from evaluations of tracking strategies shown that it is very important to adapt such strategies to pedestrian navigation
Gervais, Renaud. "Towards High-Accuracy Augmented Reality GIS for Architecture and Geo-Engineering." Thesis, Université Laval, 2012. http://www.theses.ulaval.ca/2012/28989/28989.pdf.
Full textArchitecture and geo-engineering are application domains where professionals need to take critical decisions. These professionals require high-precision tools to assist them in their daily decision taking process. Augmented Reality (AR) shows great potential to allow easier association between the abstract 2D drawings and 3D models representing infrastructure under reviewing and the actual perception of these objects in the reality. The different visualization tools based on AR allow to overlay the virtual models and the reality in the field of view of the user. However, the architecture and geo-engineering context requires high-accuracy and real-time positioning from these AR systems. This is not a trivial task, especially in urban environments or on construction sites where the surroundings may be crowded and highly dynamic. This project investigates the accuracy requirements of mobile AR GIS as well as the main challenges to address when tackling high-accuracy AR based on omnidirectional panoramas.
Suleiman, Wassim. "Analyse de visibilité et géolocalisation en milieu urbain avec un modèle numérique 3D." Phd thesis, Université Jean Monnet - Saint-Etienne, 2013. http://tel.archives-ouvertes.fr/tel-01060183.
Full textRahajaniaina, Andriamasinoro. "La réalité virtuelle et la réalité augmentée pour des systèmes d'informations ubiquitaires dans le travail collaboratif mobile." Toulouse 3, 2010. http://thesesups.ups-tlse.fr/926/.
Full textAugmented Reality is among of the techniques used to allow mobile users who are in different geographical area to share a model 2D/3D as primary tools for collaboration, using the same software on lightweight hardware or mobile computers. In this study, we proposed a modular architecture allowing the management of mobile collaborative Augmented Reality application. This architecture is designed so that the identification and the adaptation to the system are transparent to users. Vision and hybrid based tracking techniques are used to ensure the robustness of our system. The database is replicated in the servers and/or the clients. The technique of load balancing is used so that the communication between the client applications and servers is fault-tolerant
Moreau, Guillaume. "Représentation et construction des systèmes d'information par l'image." Habilitation à diriger des recherches, Université de Nantes, 2009. http://tel.archives-ouvertes.fr/tel-00488770.
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