Literatura académica sobre el tema "Données de capteurs"
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Artículos de revistas sobre el tema "Données de capteurs"
Agili, Hachem, Sylvie Daniel y Karem Chokmani. "Revue des méthodes de prétraitement des données d'imagerie hyperspectrale acquises depuis un drone". GEOMATICA 68, n.º 4 (diciembre de 2014): 331–43. http://dx.doi.org/10.5623/cig2014-407.
Texto completoGürgen, Levent, Claudia Roncancio, Cyril Labbé y Vincent Olive. "Gestion de données de capteurs". Ingénierie des systèmes d'information 14, n.º 1 (28 de febrero de 2009): 13–37. http://dx.doi.org/10.3166/isi.14.1.13-37.
Texto completoGademer, Antoine, Loïca Avanthey, Laurent Beaudouin, Michel Roux y Jean-Paul Rudant. "Micro-charges utiles dédiées à l'acquisition de données par drone pour l'étude des zones naturelles". Revue Française de Photogrammétrie et de Télédétection, n.º 213 (31 de marzo de 2017): 19–31. http://dx.doi.org/10.52638/rfpt.2017.192.
Texto completoDos Santos, Daniel Rodrigues, Antonio Maria Garcia Tommaselli, Quintino Dalmolin y Edson Aparecido Mitishita. "A semi-automatic method for indirect orientation of aerial images using ground control lines extracted from airborne laser scanner data". Revue Française de Photogrammétrie et de Télédétection, n.º 198-199 (21 de abril de 2014): 53–61. http://dx.doi.org/10.52638/rfpt.2012.72.
Texto completoLafrance, Bruno, Xavier Lenot, Caroline Ruffel, Patrick Cao y Thierry Rabaute. "Outils de prétraitements des images optiques Kalideos". Revue Française de Photogrammétrie et de Télédétection, n.º 197 (21 de abril de 2014): 10–16. http://dx.doi.org/10.52638/rfpt.2012.78.
Texto completoBoelle, Pierre-Yves, Rodolphe Thiébaut y Dominique Costagliola. "Données massives, vous avez dit données massives ?" Questions de santé publique, n.º 30 (septiembre de 2015): 1–4. http://dx.doi.org/10.1051/qsp/2015030.
Texto completoServigne, Sylvie, Cyril Ray, Alain Bouju, Thomas Devogele, Frédéric Bertrand, Claudia Gutiérrez y Noel Guillaume. "Gestion de masses de données au sein de bases de données capteurs". Revue internationale de géomatique 19, n.º 2 (30 de junio de 2009): 133–50. http://dx.doi.org/10.3166/geo.19.133-150.
Texto completoCherrington, Emil A. "BRDF-CORRECTED VEGETATION INDICES CONFIRM SEASONAL PATTERN IN GREENING OF FRENCH GUIANA’S FORESTS". Revue Française de Photogrammétrie et de Télédétection 1, n.º 211-212 (30 de diciembre de 2020): 3–9. http://dx.doi.org/10.52638/rfpt.2015.536.
Texto completoVigneau, Nathalie, Corentin Chéron, Aleixandre Verger y Frédéric Baret. "Imagerie aérienne par drone : exploitation des données pour l'agriculture de précision". Revue Française de Photogrammétrie et de Télédétection, n.º 213 (26 de abril de 2017): 125–31. http://dx.doi.org/10.52638/rfpt.2017.203.
Texto completoLe Maire, Pauline y Marc Munschy. "La mesure magnétique en drone : un nouveau moyen pour cartographier à des résolutions jusque-là inaccessibles". E3S Web of Conferences 342 (2022): 02007. http://dx.doi.org/10.1051/e3sconf/202234202007.
Texto completoTesis sobre el tema "Données de capteurs"
Brulin, Damien. "Fusion de données multi-capteurs pour l'habitat intelligent". Thesis, Orléans, 2010. http://www.theses.fr/2010ORLE2066/document.
Texto completoThe smart home concept has been widely developed in the last years in order to propose solutions for twomain concerns : optimized energy management in building and help for in-home support for elderly people.In this context, the CAPTHOM project, in which this thesis is in line with, has been developed. To respondto these problems, many sensors, of different natures, are used to detect the human presence, to determinethe position and the posture of the person. In fact, no sensor can , alone, answers to all information justifyingthe development of a multi-sensor system and a data fusion method. In this project, the selected sensorsare passive infrared sensors (PIR), thermopiles and a video camera. No sensor is carried by the person(non invasive system). We propose a global architecture of intelligent sensor made of four fusion modulesallowing respectively to detect the human presence, to locate in 3D the person, to determine the posture andto help to make a decision according to the application. The human presence module fuses information ofthe three sensors : PIR sensors for the movement, thermopiles for the presence in case of immobility and thecamera to identify the detected entity. The 3D localisation of the person is realized thanks to position recedinghorizon estimation. This method, called Visual Receding Horizon Estimation (VRHE), formulates the positionestimation problem into an nonlinear optimisation problem under constraints in the image plane. The fusionmodule for the posture determination is based on fuzzy logic. It insures the posture determination regardlessof the person and the distance from the camera. Finally, the module to make a decision fuses the outputs of the preceding modules and gives the opportunity to launch alarms (elderly people monitoring) or to commandhome automation devices (lightning, heating) for the energy management of buildings
Alibay, Manu. "Fusion de données capteurs étendue pour applications vidéo embarquées". Thesis, Paris, ENMP, 2015. http://www.theses.fr/2015ENMP0032/document.
Texto completoThis thesis deals with sensor fusion between camera and inertial sensors measurements in order to provide a robust motion estimation algorithm for embedded video applications. The targeted platforms are mainly smartphones and tablets. We present a real-time, 2D online camera motion estimation algorithm combining inertial and visual measurements. The proposed algorithm extends the preemptive RANSAC motion estimation procedure with inertial sensors data, introducing a dynamic lagrangian hybrid scoring of the motion models, to make the approach adaptive to various image and motion contents. All these improvements are made with little computational cost, keeping the complexity of the algorithm low enough for embedded platforms. The approach is compared with pure inertial and pure visual procedures. A novel approach to real-time hybrid monocular visual-inertial odometry for embedded platforms is introduced. The interaction between vision and inertial sensors is maximized by performing fusion at multiple levels of the algorithm. Through tests conducted on sequences with ground-truth data specifically acquired, we show that our method outperforms classical hybrid techniques in ego-motion estimation
Makhoul, Abdallah. "Réseaux de capteurs : localisation, couverture et fusion de données". Besançon, 2008. http://www.theses.fr/2008BESA2025.
Texto completoThis thesis tackles the problems of localization, coverage and data fusion in randomly deployed sensor networks. First, we introduce a novel approach for node's localization. It is based on a single mobile beacon aware of its positions. Sensor nodes receiving beacon packets will be able to locate themselves. The mobile beacon follows a defined Hilbert curve. On the other hand, we exploit the localization phase to construct sets of active nodes that ensure as much as possible the zone coverage. To optimize the energy consumption, we construct disjoint sets of active nodes such that only one of them is active at any moment, while ensuring at the same time both the network connectivity and the area coverage. We present and study four different scheduling methods. Ln a third step, we study the problem of data fusion in sensor networks in particular the" average consensus" problem. It allows the nodes of a sensor network to track the average of n sensor measurements. To compute the average, we propose an iterative asynchronous algorithm that is robust to the dynamic topology changes and the loss of messages. To show the effectiveness of the proposed algorithms, we conducted series of simulations based on OMNet++
Gürgen, Levent. "Gestion à grande échelle de données de capteurs hétérogènes". Grenoble INPG, 2007. http://www.theses.fr/2007INPG0093.
Texto completoThis dissertation deals with the issues related to scalable management of heterogeneous sensor data. Ln fact, sensors are becoming less and less expensive, more and more numerous and heterogeneous. This naturally raises the scalability problem and the need for integrating data gathered from heterogeneous sensors. We propose a distributed and service-oriented architecture in which data processing tasks are distributed at severallevels in the architecture. Data management functionalities are provided in terms of "services", in order to hide sensor heterogeneity behind generic services. We equally deal with system management issues in sensor farms, a subject not yet explored in this context
Mathieu, Jean. "Intégration de données temps-réel issues de capteurs dans un entrepôt de données géo-décisionnel". Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28019/28019.pdf.
Texto completoIn the last decade, the use of sensors for measuring various phenomenons has greatly increased. As such, we can now make use of sensors to measure GPS position, temperature and even the heartbeats of a person. Nowadays, the wide diversity of sensor makes them the best tools to gather data. Along with this effervescence, analysis tools have also advanced since the creation of transactional databases, leading to a new category of tools, analysis systems (Business Intelligence (BI)), which respond to the need of the global analysis of the data. Data warehouses and OLAP (On-Line Analytical Processing) tools, which belong to this category, enable users to analyze big volumes of data, execute time-based requests and build statistic graphs in a few simple mouse clicks. Although the various types of sensor can surely enrich any analysis, such data requires heavy integration processes to be driven into the data warehouse, centerpiece of any decision-making process. The different data types produced by sensors, sensor models and ways to transfer such data are even today significant obstacles to sensors data streams integration in a geo-decisional data warehouse. Also, actual geo-decisional data warehouses are not initially built to welcome new data on a high frequency. Since the performances of a data warehouse are restricted during an update, new data is usually added weekly, monthly, etc. However, some data warehouses, called Real-Time Data Warehouses (RTDW), are able to be updated several times a day without letting its performance diminish during the process. But this technology is not very common, very costly and in most of cases considered as "beta" versions. Therefore, this research aims to develop an approach allowing to publish and normalize real-time sensors data streams and to integrate it into a classic data warehouse. An optimized update strategy has also been developed so the frequent new data can be added to the analysis without affecting the data warehouse performances.
Valade, Aurelien. "Capteurs intelligents : quelles méthodologies pour la fusion de données embarquées ?" Thesis, Toulouse, INSA, 2017. http://www.theses.fr/2017ISAT0007/document.
Texto completoThe work detailed in this document is the result of a collaborative effort of the LAAS-CNRS in Toulouse and MEAS-France / TE Connectivity during a period of three years.The goal here is to develop a methodology to design smart embedded sensors with the ability to estimate physical parameters based on multi-physical data fusion. This strategy tends to integrate sensors technologies, currently dedicated to lab measurements, in low powered embedded systems working in imperfects environments. After exploring model oriented methods, parameters estimations and Kalman filters, we detail various existing solutions upon which we can build a valid response to multi-physical data fusion problematics, for linear systems with the Kalman Filter, and for non-linear systems with the Extended Kalman Filter and the Unscented Kalman Filter.Then, we will synthesize a filter for hybrid systems, having a linear evolution model and a non-linear measurement model. For example, using the best of the two worlds in order to obtain the best complexity/precision ratio. Once we selected the estimation method, we detail computing power and algorithm complexity problematics in order to find available optimizations we can use to assess the usability of our system in a low power environment. Then we present the developed methodology application to the UQS sensor, sold by TE Connectivity, study case. This sensor uses near infra-red spectroscopy to determine the urea concentration in a urea/water solution, in order to control the nitrogen-oxyde depolluting process in gasoline engines. After a design principles presentation, we detail the model we created in order to represent the system, to simulate its behavior and to combine the measurement data to extract the desired concentration. During this step, we focus on the obstacles of our model calibration and the deviation compensation, due toworking conditions or to components aging process. Based on this development, we finally designed the hybrid models addressing the nominal working cases and the model re-calibration during the working duration of the product. After this, we presented obtained results, on simulated data, and on real-world measured data. Finally, we enhanced the methodology based on tabulated “black box” models which are easier to calibrate and cheaper to process. In conclusion, we reapplied our methodology to a different motion capture sensor, to compile all possible solutions and limits
Fan, Qingfeng. "Stratégie de transfert de données dans les grilles de capteurs". Versailles-St Quentin en Yvelines, 2014. http://www.theses.fr/2014VERS0012.
Texto completoBig data era is coming, and the amount of data increases dramatically in many application fields every day. This thesis mostly focuses on the big data transmission strategy for query optimization in Grid infrastructure. Firstly, we discuss over file degree: the ring and thread replication strategy, and under file degree: the file-parted replication strategy to improve the efficiency of Data Grid. We also tackle the data packets degree using multicast data transfer within a Sensor Grid, which is widely utilized in the in-network query operation. The system comprehensively considers the location factor and data factor, and combines them in a general weighted vector. In a third stage, we extended our model to account for the energy factor to deal with wireless sensor grids, which corresponds to a 3 vectors correlation problem. We show that our approach can be extended further to any finite-dimensional factors. The last part deals with the mobile context, i. E. When users and the queried resources are mobile. We proposed an extension of the semantic cache based optimization for such mobile distributed queries. In this context, the query optimization depends, not only on the cache size and its freshness, but also on the mobility of the user
Belfkih, Abderrahmen. "Contraintes temporelles dans les bases de données de capteurs sans fil". Thesis, Le Havre, 2016. http://www.theses.fr/2016LEHA0014/document.
Texto completoIn this thesis, we are interested in adding real-time constraints in the Wireless Sensor Networks Database (WSNDB). Temporal consistency in WSNDB must be ensured by respecting the transaction deadlines and data temporal validity, so that sensor data reflect the current state of the environment. However, delays of transmission and/or reception in a data collection process can lead to not respect the data temporal validity. A database solution is most appropriate, which should coincide with the traditional database aspects with sensors and their environment. For this purpose, the sensor in WSN is considered as a table in a distributed database, which applied transactions (queries, updates, etc.). Transactions in a WSNDB require modifications to take into account of the continuous datastream and real-time aspects. Our contribution in this thesis focus on three parts: (i) a comparative study of temporal properties between a periodic data collection based on a remote database and query processing approach with WSNDB, (ii) the proposition of a real-time query processing model, (iii) the implementation of a real time WSNDB, based on the techniques described in the second contribution
Ricquebourg, Vincent. "Fusion de données crédibilistes dans le cadre de l'intelligence ambiante". Valenciennes, 2008. http://ged.univ-valenciennes.fr/nuxeo/site/esupversions/79b899ff-3a94-4816-9d5e-50754ef406c4.
Texto completoThe Smart Home concept aims at providing contextualized services to its inhabitants. Based on a heterogeneous sensors domestic network, this new kind of Smart Home deduces the most adapted action to realize with sensory data interpretation. The first problem concerns the strong heterogeneity in the sensor domain: sensors have their own hardware and software features, and their communication standards are poorly standardised. In this thesis, our interest is the context modelling and we propose a service oriented software architecture combining complementary and/or redundant sensors. We use the Transferable Belief Model (TBM) to merge sensor data and to take into account the uncertain nature of information. This model is a variant of the Dempster-Shafer theory. The sensors reliability is taken into account during the merging process to weight a failing sensor. A sensor failure can prevent context data building. The sensor reliability is estimated with a pairwise sensor fusion. The temporal conflict analysis allows detection and identification of a failing sensor. We present a second method aiming at detecting temporal behaviour drift. A TBM fusion between a predicted symbolic state and the observed symbolic state provided by the sensor is achieved. The predicted symbolic state estimation is based on a known model of behaviour. The temporal conflict analysis allows detecting behaviour drifts. Finally, we present a case study where the previous approaches are implemented in cascade in order to detect a falling person
Aby, Affoua Thérèse. "Réseaux de capteurs sans fil étendus dédiés aux collectes de données environnementales". Thesis, Clermont-Ferrand 2, 2016. http://www.theses.fr/2016CLF22671/document.
Texto completoWireless sensor networks are used in many environmental monitoring applications (e.g., to monitor forest fires or volcanoes). In such applications, sensor nodes have a limited quantity of energy, but must operate for years without having their batteries changed. The main mechanism used to allow nodes to save energy is to sequence periods of activity and inactivity. However, the design of MAC and routing protocols for applications with low duty-cycle is still a challenge. In this thesis, we proposed unsynchronized MAC and routing protocols for wireless sensor networks devoted to environmental monitoring applications. The main specificity of our protocols is that they are adapted to very low duty-cycle (less than 1 % for all nodes). Our protocols are analyzed and compared to existing protocols by simulation and experimentation on TelosB nodes. Despite this low duty-cycle for all nodes, our protocols are able to achieve good performance, unlike other protocols in the literature, which are not adapted to these extreme conditions
Libros sobre el tema "Données de capteurs"
R, Ganguly Auroop, ed. Knowledge discovery from sensor data. Boca Raton: Taylor & Francis, 2009.
Buscar texto completoSéminaire ORSTOM (1991 Université de Savoie). Du capteur aux banques de données: Techniques d'instrumentation en géophysique : Séminaire ORSTOM, Université de Savoie, Aussois, du 10 au 12 juin 1991. Paris: Editions de l'ORSTOM, 1993.
Buscar texto completoMobile Crowdsensing. Taylor & Francis Group, 2016.
Buscar texto completoBorcea, Cristian, Manoop Talasila y Reza Curtmola. Mobile Crowdsensing. Taylor & Francis Group, 2020.
Buscar texto completoBorcea, Cristian, Manoop Talasila y Reza Curtmola. Mobile Crowdsensing. Taylor & Francis Group, 2016.
Buscar texto completoBorcea, Cristian, Manoop Talasila y Reza Curtmola. Mobile Crowdsensing. Taylor & Francis Group, 2016.
Buscar texto completoBorcea, Cristian, Manoop Talasila y Reza Curtmola. Mobile Crowdsensing. Taylor & Francis Group, 2016.
Buscar texto completoBorcea, Cristian, Manoop Talasila y Reza Curtmola. Mobile Crowdsensing. Taylor & Francis Group, 2016.
Buscar texto completoOmitaomu, Olufemi A., Joao Gama, Ranga Raju Vatsavai, Auroop R. Ganguly y Mohamed Gaber. Knowledge Discovery from Sensor Data. Taylor & Francis Group, 2008.
Buscar texto completoOmitaomu, Olufemi A., Joao Gama, Ranga Raju Vatsavai, Auroop R. Ganguly y Mohamed Gaber. Knowledge Discovery from Sensor Data. Taylor & Francis Group, 2008.
Buscar texto completoCapítulos de libros sobre el tema "Données de capteurs"
GARZELLI, Andrea y Claudia ZOPPETTI. "Analyse multitemporelle d’images Sentinel-1/2 pour le suivi de l’utilisation des sols". En Détection de changements et analyse des séries temporelles d’images 1, 221–45. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9056.ch8.
Texto completoHAMDI, Omessaad, Mohamed AYMEN CHALOUF y Amal SAMMOUD. "Utilisation de la biométrie pour sécuriser les communications intra-BAN". En Gestion de la sécurité en e-santé, 137–59. ISTE Group, 2024. http://dx.doi.org/10.51926/iste.9179.ch6.
Texto completoAYMEN CHALOUF, Mohamed, Hana MEJRI y Omessaad HAMDI. "Intelligence artificielle pour la sécurité en e-santé". En Gestion de la sécurité en e-santé, 213–35. ISTE Group, 2024. http://dx.doi.org/10.51926/iste.9179.ch9.
Texto completoBAJJOUK, Touria, Audrey MINGHELLI, Malik CHAMI y Tristan PETIT. "Inversion de modèle de transfert radiatif et application à l’observation en zone côtière". En Inversion et assimilation de données de télédétection, 271–302. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9142.ch8.
Texto completoGALLAIS, Antoine y Youcef IMINE. "Cybersécurité des systèmes industriels cyber-physiques". En Digitalisation et contrôle des systèmes industriels cyber-physiques, 115–35. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9085.ch6.
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