Search results for "réalité augmentée"
showing 7 items of 7 documents
Augmented reality based middle and inner ear surgical procedures
2020
Otologic procedures involve manipulation of small, delicate and complex structures in the temporal bone anatomy which are in close proxmity of critical nerves and blood vessels. Augmented reality (AR) can highly benefit the otological domain by providing supplementary anatomical and navigational information unified on a single display. However, despite being composed of mainly rigid bony structures, the awareness and acceptance of possibilities of AR systems in otology is fairly low. This project aims at developing video-based AR solutions for middle and inner ear surgical procedures.We propose two applications of AR in this regard. In the first application, information about middle ear cle…
Approche coopérative pour l'acquisition et l'observation de formes tridimensionnelles
2009
Technologic progres can reduce the barrier between real image and virtual image so far it is really difficult to recognize them. When virtual reality is well done, augmented reality, from virtual world to real world, is still developped. We want to project a virtual texture onto a 3D real object. By using cameras and projector, we estimate its real pose in the virtual reference by projecting a coded pattern to find points of correspondence between cameras and projector onto the textureless object, where common detector of points of correspondence are useless. We combine the calibration of the system and these points to estimate the 3D position of the object, and then register with a fine mo…
Apport des réalités virtuelles et augmentées dans la planification et le suivi in situ de travaux de rénovation.
2013
This dissertation presents the evaluation of an onsite augmented reality tool and its relevance for helping construction agents to prepare and monitor the progress of a building's construction or renovation through a mobile device. The case study focuses on virtual renovation works regarding an ancient window –dated eighteenth century- in a room of the Cluny (Saone et Loire, France) abbey buildings. The study aims at comparing the efficiency and the precision of users' behavior in four situations while performing identical sets of tasks. Three methods related to the ICT uses of onsite AEC (Architecture, Engineering and Construction) guided the experiment: the first method focuses on paper-b…
Augmented Reality in minimally invasive otologic surgery and transmodiolar cochlear implantation
2021
Optimal exposure is necessary for minimally invasive otologic surgery. Augmented reality allows to enrich the real environment by adding data without replacing it by a virtual environment and to view this information on a single screen by combining the vision of the operating field and the imaging. This technique is very little described in otology in the literature. This project aims to develop augmented reality solutions for otological surgeries and transmodiolar implantation. To prepare this augmented reality project, we studied the visualization of the middle ear by a virtual endoscope based on preoperative high resolution CT-scans. Then, we worked on the application of augmented realit…
El SandBox, una aplicación de representación espacial de realidad aumentada de interés para el aprendizaje de la geografía
2022
La SandBox est une technologie développée par l’UC Davis qui permet de modéliser des terrains en réalité augmentée. Il s’agit d’un système permettant de sculpter dans le sable un paysage qui va être topographié par l’ordinateur. Une carte d’élévation (2D), composée de courbes et de couleurs, est projetée dans l’espace d’expérimentation (3D). L’opération se fait en direct, ce qui permet une grande interactivité. Les représentations bidimensionnelles (carte 2D) ne permettent pas toujours une bonne perception de l’espace (3D) représenté, cependant cet article souligne comment utiliser la SandBox pour pallier aux difficultés rencontrées lors de la lecture de ces représentations. Il détaille com…
Simulation d’un Affichage Tête Haute - Réalité Augmentée pour l’aide visuelle à la conduite automobile
2016
Head-Up Display is the emerging solution for visual aid while driving a car, especially during reduced visibility conditions, such as bad weather or when the road is poorly lighted. The HUD device allows to project virtual information in the central field of view of the driving scene, enabling the driver to keep his attention on the road. The visual perception of the driver is therefore augmented, with a coexistence between the real and virtual world. However, it is necessary to ensure an optimal setting in order to guarantee the good perception of the virtual information, and allow drivers to take appropriate actions at the right moment. This thesis project is dedicated to study three impo…
Cluny: de la gestion de données à la réalité augmentée
2007
Cluny III was the greatest abbey of the Christendom until the construction of Saint-Peters of Roma in the 17th century. Unfortunately, the Order of Cluny was broke up with the French revolution, and the church became a stone pit carry. Until 2010, for the commemoration of the Cluny foundation, a great restoration yard has begun. It is composed of two parts: Hézelon which is the restoration and development program for the patrimony of Cluny; and Gunzo, which is a research assembly on new image technologies, for knowledge and valorisation of the site. To facilitate the comprehension of this patrimony, and to allow the public to access its past, augmented reality features had been developed.