Search results for "hardware"
showing 10 items of 1372 documents
NoC based virtualized accelerators as cloud services
2016
National audience; Hardware accelerators(HwAcc) provide good performance in computation intensive applications. Integrating hardware accelerators in a cloud environment is the optimal way to improve the quality of service. However, mapping all possible application statically into the reconfigurable fabric of the FPGA is rather impractical and prohibitively expensive in terms of resource and power consumption. This problem can be alleviated via time multiplexing the access to the underlying hardware resources, FPGA, by designing dynamically reconfigurable accelerators in the cloud. Similarly, the connection and communication between the accelerators and the reconfigurable control will not be…
Sharing spatial data with a 3D component as a collaborative and dissemination tool for archaeology: conceptual challenges and technical issues
2018
International audience; Due to INSPIRE directive, various spatial data infrastructure (SDI) were developed to support research activities. In practice, these toolsremain underexploited by researcher for many reasons. First, their use is time-consuming and researchers usually consider that they provide noimmediate benefits. Second, their use is often complex and needs a substantial investment for researchers who have a limited expertise in spatial data. Finally, often based on 2D GIS environment, they do not provide an adequate tool for collaborative research in archaeology. From this experience, an interdisciplinary team designed and developed an SDI based on GeOrchestra, synchronized with …
Extensions matérielles pour processeurs embarqués de traitement d'images.
2007
12p; Le marché des imageurs embarqués est entré dans une ère nouvelle avec l'avènement des téléphones portables munis d'appareils photographiques et de caméras. Il est attendu qu'à l'horizon 2009, leur nombre dépassera celui de l'ensemble des appareils photos vendus depuis l'invention de la photographie, et ce qu'ils soient numériques ou non. Le marché des imageurs électroniques embarqués est donc un secteur porteur, notamment au travers de la téléphonie et de la visiophonie mobile. Les applications ne sont plus limitées à la simple photographie ou la transmission de vidéo ; les lecteurs de codes matrices, la reconnaissance de visages, la biométrie, ou la vision 3D sont des exemples parmi l…
PROCEDE DE PRE-DISTORSION NUMERIQUE D’UN SIGNAL ET REPETEUR DE TELECOMMUNICATION INTEGRANT UN FILTRE A REPONSE IMPULSIONNELLE FINIE POUR METTRE EN OE…
2013
L'invention concerne un procédé de pré-distorsion numérique d'un signal de télécommunication traité dans un circuit électronique 100 intégrant un filtre à réponse impulsionnelle finie 321. Ce procédé consiste successivement: - à identifier, à la sortie du circuit 100, les paramètres de distorsions de phase et/ou d'amplitude du signal en fonction de la fréquence, - à partir des susdits paramètres de distorsions relevés, à générer, par un algorithme basé sur une interpolation, des coefficients permettant d'effectuer dans ledit filtre 321, des prédistorsions du signal numérique destinées à engendrer une précorrection des susdites distorsions, - à transférer lesdits coefficients de pré-distorsi…
Scheduling independent stochastic tasks under deadline and budget constraints
2018
This article discusses scheduling strategies for the problem of maximizing the expected number of tasks that can be executed on a cloud platform within a given budget and under a deadline constraint. The execution times of tasks follow independent and identically distributed probability laws. The main questions are how many processors to enroll and whether and when to interrupt tasks that have been executing for some time. We provide complexity results and an asymptotically optimal strategy for the problem instance with discrete probability distributions and without deadline. We extend the latter strategy for the general case with continuous distributions and a deadline and we design an ef…
Evolutionary-based 3D reconstruction using an uncalibrated stereovision system: application of building a panoramic object view
2010
In this paper, we propose an original evolutionary-based method for 3D panoramic reconstruction from an uncalibrated stereovision system (USS). The USS is composed of five cameras located on an arc of a circle around the object to be analyzed. The main originality of this work concerns the process of the calculation of the 3D information. Actually, with our method, 3D coordinates are directly obtained without any prior estimation of the fundamental matrix. The method operates in two steps. Firstly, points of interest are detected in pairs of images acquired by two consecutive cameras of the USS are matched. And secondly, using evolutionary algorithms, we jointly compute the transformed matr…
Adaptive Hardware Implementation for the Deblocking Filter Used in H.264/AVC Using System GeneratorEnter title
2016
International audience; Xilinx System Generator is a Matlab/Simulink high-level based design tool especially for the development of complex digital circuits using Hardware Description Language (HDL). In this paper we propose a high level model for the deblocking filter used in H.264/AVC using System Generator of Matlab/Simulink. Synthesis results are compared with implementations realized using RTL level. The proposed model allows for rapid edits of the architectures and permits the implementation of filters used in other standards and norms (HEVC for example). The proposed implementations are verified using Xilinx-Virtex5 platforms.
All-Optical Measurement of Background, Amplitude and Timing Jitter for high speed pulse trains or prbs sequences using autocorrelation function
2006
We present a simple method for all-optical measurements of background, amplitude- and timing-jitter of ultra high speed pulse trains or prbs sequences using the jitter dependences of the intercorrelation-peak shape.
FP7: The Human Submandibular Gland (HSG) cell line: a tool to study the regulation of salivary markers of bitterness perception
2012
Abstract of flash presentation page 79
Guide pour l'ergonomie des interfaces homme-machine
1998
Rapport de contrat Bull INRIA; Spécifications ergonomiques pour la conception des interfaces logicielles Bull