Search results for "informatique"
showing 10 items of 121 documents
Adapting to Dynamic LEO-B5G Systems : Meta-Critic Learning Based Efficient Resource Scheduling
2022
Low earth orbit (LEO) satellite-assisted communications have been considered as one of key elements in beyond 5G systems to provide wide coverage and cost-efficient data services. Such dynamic space-terrestrial topologies impose exponential increase in the degrees of freedom in network management. In this paper, we address two practical issues for an over-loaded LEO-terrestrial system. The first challenge is how to efficiently schedule resources to serve the massive number of connected users, such that more data and users can be delivered/served. The second challenge is how to make the algorithmic solution more resilient in adapting to dynamic wireless environments.To address them, we first…
Les jeux vidéo comme instruments de techno-transe
2016
International audience; This article aims to reopen the genealogy of video games, studying the similarities they share with what the author calls ‘techno-trance devices’. These devices, which are contemporary to the first video games in the early 1960s, rely on the creative hijacking of laboratory instruments. They share numerous technical and media properties with video games. Moreover, there are some records of these techno-trance devices being used during religious practices at the time, which might lead to speculation of a latent trance influence in video games as apparatuses. These shared properties between video games and these devices, derived from counterculture, are thus studied th…
Représentation hybride du modèle numérique pour la gestion d'un patrimoine bâti dit ancien
2013
International audience; Ce projet de recherche explore et repousse les limites inhérentes à la représentation numérique du bâti ancien dans la préparation et le suivi de travaux de rénovation. A Cluny, l'Ecole Nationale Supérieure des Arts et Métiers est logée en partie dans les bâtiments de l'ancienne abbaye clunisienne. La représentation numérique d'un bâtiment permet d'archiver la connaissance tout au long de son cycle de vie. L'édifice, datant du XVIIIème siècle, est classé aux monuments historiques. En matière de rénovation les opérations sont strictement encadrées. L'étude de cas portera sur l'isolation intérieure d'un bureau au niveau de la baie ancienne. Elle consiste en l'ajout d'u…
Sensor Fusion Combining 3-D and 2-D for Depth Data Enhancement
2012
Time-of-Flight (ToF) cameras are known to be cost-efficient 3-D sensing systems capable of providing full scene depth information at a high frame rate. Among many other advantages, ToF cameras are able to provide distance information regardless of the illumination conditions and with no texture dependency, which makes them very suitable for computer vision and robotic applications where reliable distance measurements are required. However, the resolution of the given depth maps is far below the resolution given by standard 2-D video cameras which, indeed, restricts the use of ToF cameras in real applications such as those for safety and surveillance. In this thesis, we therefore investigate…
Fuzzy formalizations of cognitive distance
1992
Spatial training process allows more and more precise informations to be collected and memorized. The aim of this article is to describe a three steps training process based on three fuzzy formalizations of cognitive distance associated to three different types of informations : (1) expression of a linguistic relative distance based on fuzzy relation of closeness or/and remoteness, (2) expression of a linguistic absolute distance expressed by primary linguistic terms like short or long and (3) expression of a fuzzy metric absolute distance. A fourth part is devoted to expression of precise correspondance rule between linguistic and metric opinions described below.
Dispositif d'extraction d'informations à partir d'une image
2017
L'invention concerne un dispositif d'extraction d'informations (10) à partir d'une image (12), le dispositif comportant une alternance de deux couches simples (S1, S2) et de deux couches complexes (C1, C2), -la première couche simple (S1) comportant un banc de filtres (15) qui diffèrent par leurs tailles et/ou leurs orientations, chaque filtre (15) étant configuré pour filtrer l'image d'entrée (12, 14), -la première couche simple (S1) intégrant des filtres (15) dont chaque coefficient (16) est codé sur un nombre de bits inférieur ou égal à 8 bits.
Interaction peripheral device capable of controlling an element for touching and grasping multidimensional virtual objects
2015
An interaction peripheral device capable of controlling an element for touching and grasping multidimensional virtual objects, including at least two interaction modules, each interaction module being intended to be actuated by a finger of an operator and including a control sensor allowing control of displacement, according to a predetermined number of degrees of freedom, of a portion of the element for touching and grasping virtual objects by bending/extending and/or adduction/abduction displacement of the finger of the operator, and a vibrator able to emit a vibration upon touching and/or letting go of a virtual object by a portion of said element for touching and grasping virtual object…
A predictive approach for a real-time remote visualization of large meshes
2012
Déjà sur HAL; Remote access to large meshes is the subject of studies since several years. We propose in this paper a contribution to the problem of remote mesh viewing. We work on triangular meshes. After a study of existing methods of remote viewing, we propose a visualization approach based on a client-server architecture, in which almost all operations are performed on the server. Our approach includes three main steps: a first step of partitioning the original mesh, generating several fragments of the original mesh that can be supported by the supposed smaller Transfer Control Protocol (TCP) window size of the network, a second step called pre-simplification of the mesh partitioned, ge…
Périphérique d'interaction apte à contrôler un élément de toucher et de préhension d'objets virtuels multidimensionnels
2012
Ne pas le transférer sur HAL (déjà déposé sur HAL par le co-auteur (hors ENSAM)) L’invention concerne un périphérique d’interaction (1) apte à contrôler un élément de toucher et de préhension d’objets virtuels multidimensionnels, comportant au moins deux modules d’interaction (20), chaque module d’interaction (20) étant destiné à être actionné par un doigt d’un opérateur et comportant un capteur de commande permettant de commander un déplacement, selon un nombre de degrés de liberté prédéterminé, d’une partie de l’élément de toucher et de préhension d’objets virtuels par déplacement en flexion/extension et/ou adduction/abduction du doigt de l’opérateur, et un vibreur apte à émettre une vibr…
Allocation des ressources dans l’informatique en brouillard le calcul du brouillard véhiculaire pour une utilisation optimale des véhicules électriqu…
2019
Abstract: Technological advancements made it possible for Electric vehicles (EVs) to have onboard computation, communication, storage, and sensing capabilities. Nevertheless, most of the time these EVs spend their time in parking lots, which makes onboard devices cruelly underutilized. Thus, a better management and pooling these underutilized resources together would be strongly recommended. The new aggregated resources would be useful for traffic safety applications, comfort related applications or can be used as a distributed data center. Moreover, parked vehicles might also be used as a service delivery platform to serve users. Therefore, the use of aggregated abundant resources for the …