Literatura académica sobre el tema "Données spectrales et spatiales"
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Artículos de revistas sobre el tema "Données spectrales et spatiales":
Tochon, Guillaume, Jean-Baptiste Féret, Silvia Valero, Roberta E. Martin, Raul Tupayachi, Jocelyn Chanussot, Philippe Salembier y Gregory P. Asner. "Segmentation hyperspectrale de forêts tropicales par Arbres de Partition Binaires". Revue Française de Photogrammétrie et de Télédétection, n.º 202 (16 de abril de 2014): 55–65. http://dx.doi.org/10.52638/rfpt.2013.51.
Kalenga Tshingomba, Urcel, Magali Jouven, Lucile Sautot, Imad Shaqura y Maguelone Teisseire. "Cartographie des surfaces pastorales à l’aide des données Sentinel 2 L3A et des données ouvertes". Revue Internationale de Géomatique 30, n.º 3-4 (julio de 2020): 245–77. http://dx.doi.org/10.3166/rig.2021.00112.
Hajalalaina, Aimé Richard, Manuel Grizonnet, Eric Delaître, Solofo Rakotondraompiana y Dominique Hervé. "Discrimination des zones humides en foret malgache, proposition d'une methodologie multiresolution et multisource utilisant ORFEO toolbox". Revue Française de Photogrammétrie et de Télédétection, n.º 201 (16 de abril de 2014): 37–48. http://dx.doi.org/10.52638/rfpt.2013.44.
Vaudour, Emmanuelle, Paul-Emile Noirot-Cosson y Olivier Membrive. "Apport des images satellitaires de très haute résolution spatiale Pléiades à la caractérisation des cultures et des opérations culturales en début de saison". Revue Française de Photogrammétrie et de Télédétection, n.º 208 (5 de septiembre de 2014): 97–103. http://dx.doi.org/10.52638/rfpt.2014.106.
Harris, Jeff R., Juan X. He, Robert Rainbird y Pouran Behnia. "A Comparison of Different Remotely Sensed Data for Classifying Bedrock Types in Canada’s Arctic: Application of the Robust Classification Method and Random Forests". Geoscience Canada 41, n.º 4 (3 de diciembre de 2014): 557. http://dx.doi.org/10.12789/geocanj.2014.41.062.
Le Bris, Arnaud, Cyril Wendl, Nesrine Chehata, Anne Puissant y Tristan Postadjian. "Fusion tardive d'images SPOT-6/7 et de données multi-temporelles Sentinel-2 pour la détection de la tâche urbaine". Revue Française de Photogrammétrie et de Télédétection, n.º 217-218 (21 de septiembre de 2018): 87–97. http://dx.doi.org/10.52638/rfpt.2018.415.
Gilliot, Jean-Marc, Emmanuelle Vaudour, Joël Michelin y Sabine Houot. "Estimation des teneurs en carbone organique des sols agricoles par télédétection par drone". Revue Française de Photogrammétrie et de Télédétection, n.º 213 (26 de abril de 2017): 105–15. http://dx.doi.org/10.52638/rfpt.2017.193.
Vintila, Ruxandra. "Kalideos Adam : Synthèse et retour d'expérience". Revue Française de Photogrammétrie et de Télédétection, n.º 197 (22 de abril de 2014): 112–18. http://dx.doi.org/10.52638/rfpt.2012.87.
Aubert, Yoann, Thomas Legay, Julien Verdonck, Damien Brunel y Stéphane Delichere. "Les données spatiales au service du suivi des ressources en eau". E3S Web of Conferences 346 (2022): 04008. http://dx.doi.org/10.1051/e3sconf/202234604008.
CONSTANS, Yohann y Sophie FABRE. "Fusion De Données Hyperspectrales Et Panchromatiques Par Demelange Spectral Dans Le Domaine Reflectif". Revue Française de Photogrammétrie et de Télédétection 224, n.º 1 (22 de diciembre de 2022): 59–74. http://dx.doi.org/10.52638/rfpt.2022.508.
Tesis sobre el tema "Données spectrales et spatiales":
Erudel, Thierry. "Caractérisation de la biodiversité végétale en milieu montagnard et de piedmont par télédétection : apport des données aéroportées à très hautes résolutions spatiales et spectrales". Thesis, Toulouse, ISAE, 2018. http://www.theses.fr/2018ESAE0018/document.
This thesis highlighted the interest of using data with very high spatial and spectral resolution for the characterization of plant biodiversity in mountain areas. On the one hand, it has been shown that (in situ or airborne) hyperspectral data can discriminate plant habitats in a mountain peatbog. The difficulty of this study comes from the strong heterogeneity that exists within a bog that has strong floristic gradients and the definition of habitat classes that group several plant species (sometimes common from one class to another). More specifically, this thesis made it possible to highlight that discrimination could be carried out according to three approaches starting from measures of similarity applied to the spectral signature by applying a supervised classification which takes into account local information (spectral indices of vegetation) or global information (different spectral domains). The best results to distinguish these different habitat classes are not obtained with the spectral signature but with transformed spectral signatures (CRDR) in the spectral range[350-1350 nm]. The spectral vegetation indices that have been selected from a non-exhaustive base, which characterizes other plant species, are also mainly located in this spectral range. Moreover, this thesis highlighted the interest of applying a classifier little used for classification but rather for dimension reduction (RLR). Fine mapping of habitats was also carried out using airborne hyperspectral data
Chane, Camille. "Intégration de systèmes d'acquisition de données spatiales et spectrales haute résolution, dans le cadre de la génération d'informations appliquées à la conservation du patrimoine". Phd thesis, Université de Bourgogne, 2013. http://tel.archives-ouvertes.fr/tel-00909743.
Simon, Chane Camille. "Intégration de systèmes d'acquisition de données spatiales et spectrales haute résolution, dans le cadre de la génération d'informations appliquées à la conservation du patrimoine". Thesis, Dijon, 2013. http://www.theses.fr/2013DIJOS008/document.
The concern and interest of this PhD thesis is the registration of featureless 3D and multispectral datasets describing cultural heritage objects.In this context, there are few natural salient features between the complementary datasets, and the use of targets is generally proscribed.We thus develop a technique based on the photogrammetric tracking of the acquisition systems in use.A series of simulations was performed to evaluate the accuracy of our method in three configurations chosen to represent a variety of cultural heritage objects.These simulations show that we can achieve a spatial tracking accuracy of 0.020 mm and an angular accuracy of 0.100 mrad using four 5 Mpx cameras when digitizing an area of 400 mm x 700 mm. The accuracy of the final registration relies on the success of a series of optical and geometrical calibrations and their stability for the duration of the full acquisition process.The accuracy of the tracking and registration was extensively tested in laboratory settings. We first evaluated the potential for multiview 3D registration. Then, the method was used for to project of multispectral images on 3D models.Finally, we used the registered data to improve the reflectance estimation from the multispectral datasets
Abou, Fadel Maya. "Apports de la chimiométrie à la spectroscopie de Résonance Paramagnétique Electronique : nouvelles perspectives de traitement de données spectrales à dimensions spatiales (imagerie) et/ou temporelles". Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL10130/document.
Electron Paramagnetic Resonance (EPR) Spectroscopy has undoubtedly become the first-choice technique for the characterization of complex materials containing some unpaired electrons (transition metal ions, rare earth ions, defects, organic radicals ...). Similarly to nuclear magnetic resonance spectroscopy, EPR generates multidimensional (2D, 3D…) spectral and recently also spatial (imaging) data as well as spectral/spatial ones. It is thus, surprising that despite the large amount of spectral data to be explored and complexity of the EPR signals, there hardly exist at the international level of exploitation the multivariate data processing methods that are widely available in chemometrics. The objective of this thesis is thus, to develop new tools for the treatment of these EPR spectral data, to establish new analytical methodologies and to evaluate their performance. The two main areas that will be studied are spectroscopic imaging and time-resolved spectroscopy. In this work, we will show that the implementation of the methods known as "multivariate curve resolutions" can extract, simultaneously, and without a priori all chemical maps and their corresponding spectra of pure compounds present in the studied sample. This methodology will also be exploited to extract the EPR spectra of intermediate species during a kinetic monitoring
Nardecchia, Alessandro. "Chemometric exploration in hyperspectral imaging in the framework of big data and multimodality". Electronic Thesis or Diss., Université de Lille (2022-....), 2022. https://pepite-depot.univ-lille.fr/LIBRE/EDSMRE/2022/2022ULILR021.pdf.
Nowadays, it is widely known that hyperspectral imaging is a very good tool used in many chemical-related research areas. Indeed, it can be exploited for the study of samples of different nature, whatever the spectroscopic technique used. Despite the very interesting characteristics related to this kind of acquired data, various limitations are potentially faced. First of all, modern instruments can generate a huge amount of data (big datasets). Furthermore, the fusion of different spectroscopic responses on the same sample (multimodality) can be potentially applied, leading to even more data to be analyzed. This aspect can be a problem, considering the fact that if the right approach is not used, it could be complicated to obtain satisfying results or even lead to a biased vision of the analytical reality of the sample. Obviously, some spectral artifacts can be present in a dataset, and so the correction of these imperfections has to be taken into account to carry out good outcomes. Another important challenge related to the use of hyperspectral image analysis is that normally, the simultaneous observation of spectral and spatial information is almost impossible. Clearly, this leads to an incomplete investigation of the sample of interest. Chemometrics is a modern branch of chemistry that can perfectly match the current limitations related to hyperspectral imaging. The purpose of this PhD work is to give to the reader a series of different topics in which many challenges related to hyperspectral images can be overcome using different chemometric facets. Particularly, as it will described, problems such as the generation of big amount of data can be faced using algorithms based on the selection of the purest information (i.e., SIMPLISMA), or related to the creation of clusters in which similar components will be grouped (i.e., KM clustering). In order to correct instrumental artifacts such as saturated signals will be used a methodology that exploits the statistical imputation, in order to recreate in a very elegant way the missing information and thus, obtain signals that otherwise would be irremediably lost. A significant part of this thesis has been related to the investigation of data acquired using LIBS imaging, a spectroscopic technique that is currently obtaining an increasing interest in many research areas, but that, still, has not really been exploited to its full potential by the use of chemometric approaches. In this manuscript, it will be shown a general pipeline focusing on the selection of the most important information related to this kind of data cube (due to the huge amount of spectral data that can be easily generated) in order to overcome some limitations faced during the analysis of this instrumental response. Furthermore, the same approach will be exploited for the data fusion analysis, related to LIBS and other spectroscopic data. Lastly, it will be shown an interesting way to use wavelet transform, in order to not limit the analysis only to spectral data, but also to spatial ones, to obtain a more complete chemical investigation
Istiqomah, Istiqomah. "Solides organiques dans les petits corps glacés : approches expérimentales et interprétation des données spectrales issues de mission VIRTIS/Rosetta". Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALU006.
The Rosetta space mission explored comet 67P/Churyumov-Gerasimenko between July 2014 and September 2016. During two years, extensive mappings in the visible and infrared ranges have been achieved by the VIRTIS imaging spectrometer (Visible InfraRed Thermal Imaging Spectrometer). This instrument has revealed a very dark and reddish surface, which has been interpreted by the presence of a dark carbonaceous material mixed up with opaque minerals (presumable Fe-Ni alloys and pyrrhotite). VIRTIS has also revealed, for the first for a comet, a broad band at 3.2 µm. The nature of this band was unclear at the beginning of this thesis, and two main semi-volatile compounds were suspected: ammonium salts and carboxylic acids.In this thesis, we have investigated these two hypotheses through laboratory experiments. We first conducted FTIR transmission experiments on pure solid carboxylic acids and ammonium salts. In a second step, we collected reflectance spectra of analogs of the refractory crust. A particular attention was devoted to the production of such analogs, and we developed dedicated grinding and mixing protocols. We found that the most suitable analogs are those produced from the sublimation of ice + refractory + semi-volatile mixtures in a vacuum chamber. They account well for the fine-grained and highly porous cometary material. Our experiments show that the 3.2 µm band in VIRTIS spectra is consistent with the presence of ammonium salts, which are ubiquitous across the surface of the comet. These ammonium salts constitute a new reservoir of nitrogen in comet, which might at least partially account for the missing nitrogen in comets.The abundance of the ammonium salt could however not be determined. Our experiments reveal the lack of between the band depth and the ammonium abundance in the samples, pointing that the parameters that control the band depth are not elucidated yet. This result points to the difficult question of the characterization of the porous texture of the sublimation residues and of their complex geometries. The grain size distribution is definitely only one parameter among other ones, and future studies should focus on this point. At last, the modeling approaches based on Hapke models are definitely not suitable for these dark semi-volatile bearing materials, and great care should be devoted with values published so far in literature
Laberdesque, Romain. "Etude des propriétés spectrales et spatiales de réflecteurs et coupleurs résonants". Thesis, Toulouse, INSA, 2016. http://www.theses.fr/2016ISAT0047/document.
The study is focused on the spectral and spatial properties of resonant grating structures. Resonant gratings in cavity are identified as structures allowing the fabrication of small-area and efficient reflectors and couplers. A model based on coupled mode theory has been developped, enabling fast modeling and design of this kind of structures. Thanks to this model we improved our understanding of the spectral and spatial properties of resonant gratings in cavity. In particular, we have established the relationship between the structure's geometry and the spectral and spatial properties of the modes which efficiently interact with the structures when used as reflectors or as couplers. The design of coupling structures with high-quality factor and controlled spatial profiles on cm-sized surfaces has been studied. Two axis of research are presented: structures composed of several cavities and structures composed by one large cavity. The later ones allow a better control of the spatial properties both in intensity and phase. We demonstrate that these structures have a high potential for holography. Design of such structures with low contrast index is also considered, particularly the design and fabrication of polymer-based waveguiding structures
Mahieu, Benoît. "Cohérence, accordabilité, propriétés spectrales et spatiales de sources de lumière extrême-ultraviolette femtoseconde". Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00967018.
Vezin, Philippe. "Caractéristiques spatiales et spectrales de la réponse instationnaire d’un écoulement turbulent en canal". Grenoble INPG, 1995. http://www.theses.fr/1995INPG0134.
Fauvel, Mathieu. "Méthodes spatiales et spectrales pour la classification de zones urbaines en imagerie satellitaire". Grenoble INPG, 2007. http://www.theses.fr/2007INPG0138.
Ln this work, we have investigated the difficult problem of classification of remote sensing data over urban area with high spatial resolution. Two strategies have been proposed. The fmt one is based on a two step-approach: in a fust step, spatial and spectral features are extracted and the classification is done according to the extracted feature in the second step. Morphological processing, such as geodesic opening and closing, have been used to extract spatial and spectral features. For the classification the support vector machine have been used. A novel kemel has been defmed that use both the spectral and spatial information during the classification step. The second strategy is based on data fusion. We proposed a fusion scheme, using fuzzy logic modeling, to fuse the outputs of several classifiers appplied on different data set from a same location. Conflict and uncertainty are solved using estimated of confidence. Experimental results on real data set shown superior accuracy compare to standard approach when using our proposed method
Libros sobre el tema "Données spectrales et spatiales":
King, Christine. Etude des Sols et des Formations Superficielles par Teledetection: Approche de leurs caracteristiques spectrales, spatiales et temporelles dans le visible et le proche infra-rouge. Orlean: Recherches Geologiques et Minieres, 1985.
Standardization, International Organization for. Space data and information transfer systems--: Open archival information system-- reference model = Syst`emes de transfert des informations et données spatiales-- système ouvert d'archivage de l'information-- modèle de référence. Geneva: ISO, 2003.
Michael, Cheliak William, Canadian Forestry Service, Geomatics International y Service canadien des forêts, eds. Spatial information management concepts and strategies for the Canadian Forest Service : a blueprint for actions towards a Canadian forest spatial data infrastructure : report =: Concepts et stratégies de gestion de l'information spatiale pour le Service canadien des forêts : plan d'action pour une infrastructure de données spatiales concernant les forêts canadiennes : rapport. Ottawa, Ont: Canadian Forest Service = Service canadien des forêts, 1996.
Nackoney, Janet, Jena Hickey, David Williams, Charly Facheux, Takeshi Furuichi y Jef Dupain. Geospatial information informs bonobo conservation efforts. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198728511.003.0017.
Capítulos de libros sobre el tema "Données spectrales et spatiales":
GOUHIER, Mathieu. "Surveillance des volcans par télédétection spatiale". En Aléas et surveillance de l’activité volcanique 2, 177–226. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9045.ch3.
"7. Ressources en eau et données spatiales". En Trajectoires de recherches en Amazonie brésilienne, 68–75. IRD Éditions, 2022. http://dx.doi.org/10.4000/books.irdeditions.47051.
DEE, Laura E., Kaitlin KIMMEL y Meghan HAYDEN. "Biodiversité et fonctionnement des écosystèmes : analyses observationnelles". En Les conséquences écologiques et sociétales de la perte de biodiversité, 137–63. ISTE Group, 2024. http://dx.doi.org/10.51926/iste.9072.ch6.
CARPENTIER-POSTEL, Samuel. "Trajectoires résidentielles et modes d’habiter : un panorama en France et en Europe". En Échelles spatiales et temporelles de la mobilité, 115–39. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9064.ch6.
JARLAN, Lionel, Bertrand BONAN, Jean-Christophe CALVET, Patricia DE ROSNAY, Catherine OTTLÉ y Philippe PEYLIN. "Assimilation de données de télédétection pour le suivi des surfaces continentales". En Inversion et assimilation de données de télédétection, 45–95. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9142.ch2.
NOUCHER, Matthieu. "La communication cartographique sur le Géoweb : entre cartes et données". En Communication cartographique, 147–71. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9091.ch5.
BOURON, Jean-Benoît, Claire CUNTY, Hélène MATHIAN y Myriam BARON. "Cartes et graphiques pour explorer des relations statistiques". En Traitements et cartographie de l’information géographique, 19–45. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9161.ch1.
ROBIN, Vincent, Alexa DUFRAISSE y Claudia OLIVEIRA. "L’analyse des anciennes charbonnières pour l’étude des trajectoires forestières". En Écologie historique, 115–27. ISTE Group, 2024. http://dx.doi.org/10.51926/iste.9090.ch9.
MARAGE, Damien, Catherine FRUCHART, Isabelle JOUFFROY-BAPICOT, Olivier GIRARDCLOS y Vincent BALLAND. "Vers un cadre méthodologique afin d’examiner l’histoire cachée des couvertures boisées". En Écologie historique, 143–58. ISTE Group, 2024. http://dx.doi.org/10.51926/iste.9090.ch11.