Relevant bibliographies by topics / AVIRIS images

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'AVIRIS images'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'AVIRIS images.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "AVIRIS images"

1

Roger, R. E., and M. C. Cavenor. "Lossless compression of AVIRIS images." IEEE Transactions on Image Processing 5, no. 5 (1996): 713–19. http://dx.doi.org/10.1109/83.495955.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Ayasse, Alana K., Philip E. Dennison, Markus Foote, et al. "Methane Mapping with Future Satellite Imaging Spectrometers." Remote Sensing 11, no. 24 (2019): 3054. http://dx.doi.org/10.3390/rs11243054.

Full text
Abstract:
This study evaluates a new generation of satellite imaging spectrometers to measure point source methane emissions from anthropogenic sources. We used the Airborne Visible and Infrared Imaging Spectrometer Next Generation(AVIRIS-NG) images with known methane plumes to create two simulated satellite products. One simulation had a 30 m spatial resolution with ~200 Signal-to-Noise Ratio (SNR) in the Shortwave Infrared (SWIR) and the other had a 60 m spatial resolution with ~400 SNR in the SWIR; both products had a 7.5 nm spectral spacing. We applied a linear matched filter with a sparsity prior and an albedo correction to detect and quantify the methane emission in the original AVIRIS-NG images and in both satellite simulations. We also calculated an emission flux for all images. We found that all methane plumes were detectable in all satellite simulations. The flux calculations for the simulated satellite images correlated well with the calculated flux for the original AVIRIS-NG images. We also found that coarsening spatial resolution had the largest impact on the sensitivity of the results. These results suggest that methane detection and quantification of point sources will be possible with the next generation of satellite imaging spectrometers.
APA, Harvard, Vancouver, ISO, and other styles
3

mohand, Ouahioune. "Aviris Hyperspectral Images Compression Using 3d Spiht Algorithm." IOSR Journal of Engineering 02, no. 10 (2012): 31–36. http://dx.doi.org/10.9790/3021-021023136.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Dutra, A. J. S., W. A. Pearlman, and E. A. B. da Silva. "Successive Approximation Wavelet Coding of AVIRIS Hyperspectral Images." IEEE Journal of Selected Topics in Signal Processing 5, no. 3 (2011): 370–85. http://dx.doi.org/10.1109/jstsp.2011.2135331.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

ROGER, R. E., and J. F. ARNOLD. "Reliably estimating the noise in AVIRIS hyperspectral images." International Journal of Remote Sensing 17, no. 10 (1996): 1951–62. http://dx.doi.org/10.1080/01431169608948750.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Li, Na, Ruihao Wang, Huijie Zhao, Mingcong Wang, Kewang Deng, and Wei Wei. "Improved Classification Method Based on the Diverse Density and Sparse Representation Model for a Hyperspectral Image." Sensors 19, no. 24 (2019): 5559. http://dx.doi.org/10.3390/s19245559.

Full text
Abstract:
To solve the small sample size (SSS) problem in the classification of hyperspectral image, a novel classification method based on diverse density and sparse representation (NCM_DDSR) is proposed. In the proposed method, the dictionary atoms, which learned from the diverse density model, are used to solve the noise interference problems of spectral features, and an improved matching pursuit model is presented to obtain the sparse coefficients. Airborne hyperspectral data collected by the push-broom hyperspectral imager (PHI) and the airborne visible/infrared imaging spectrometer (AVIRIS) are applied to evaluate the performance of the proposed classification method. Results illuminate that the overall accuracies of the proposed model for classification of PHI and AVIRIS images are up to 91.59% and 92.83% respectively. In addition, the kappa coefficients are up to 0.897 and 0.91.
APA, Harvard, Vancouver, ISO, and other styles
7

Ryan, M. J., and J. F. Arnold. "The lossless compression of AVIRIS images by vector quantization." IEEE Transactions on Geoscience and Remote Sensing 35, no. 3 (1997): 546–50. http://dx.doi.org/10.1109/36.581964.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Bajorski, Peter. "Non-Gaussian Linear Mixing Models for Hyperspectral Images." Journal of Electrical and Computer Engineering 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/818175.

Full text
Abstract:
Modeling of hyperspectral data with non-Gaussian distributions is gaining popularity in recent years. Such modeling mostly concentrates on attempts to describe a distribution, or its tails, of all image spectra. In this paper, we recognize that the presence of major materials in the image scene is likely to exhibit nonrandomness and only the remaining variability due to noise, or other factors, would exhibit random behavior. Hence, we assume a linear mixing model with a structured background, and we investigate various distributional models for the error term in that model. We propose one model based on the multivariatet-distribution and another one based on independent components following an exponential power distribution. The former model does not perform well in the context of the two images investigated in this paper, one AVIRIS and one HyMap image. On the other hand, the latter model works reasonably well with the AVIRIS image and very well with the HyMap image. This paper provides the tools that researchers can use for verifying a given model to be used with a given image.
APA, Harvard, Vancouver, ISO, and other styles
9

Ashournejad, Qadir, Saham Mirzaei, and Seyyed Javad Hoseini. "Exploring the capabilities of TM and AVIRIS sensor images for oil spill detection in marine and ocean waters." World Journal of Environmental Research 7, no. 2 (2018): 72–87. http://dx.doi.org/10.18844/wjer.v7i2.2969.

Full text
Abstract:
Oil spills are major water polluting sources. Due to its devastating effects on the sea and ocean ecosystem, detecting oil pollution in the shortest time and with the highest confidence level is necessary. Remote sensing being a suitable option, the capability of Landsat multispectral data and airborne hyper-spectral data from the AVIRIS sensor was investigated for study of the 2001 oil spill in the Gulf of Mexico. In this study, a part of the 2001 oil spill data was processed in terms of cloud spots,bad pixel and atmospheric correction. The pixel purity index was used to extract the end -members of water and oil spill and the linear spectral unmixing method was used for mapping of water from oil spills. The results show that the AVIRIS image is able to detect the type and thicknesses of oil spill, due to its ability to cover the diagnostic spectral signature of oil.Keywords: Monitoring, oil spill, remote sensing, Landsat, AVIRIS.
APA, Harvard, Vancouver, ISO, and other styles
10

Guha, Arindam, Uday Kumar Ghosh, Joyasree Sinha, et al. "Potentials of Airborne Hyperspectral AVIRIS-NG Data in the Exploration of Base Metal Deposit—A Study in the Parts of Bhilwara, Rajasthan." Remote Sensing 13, no. 11 (2021): 2101. http://dx.doi.org/10.3390/rs13112101.

Full text
Abstract:
In this study, we have processed the spectral bands of airborne hyperspectral data of Advanced Visible Infrared Imaging Spectrometer-Next Generation (AVIRIS-NG) data for delineating the surface signatures associated with the base metal mineralization in the Pur-Banera area in the Bhilwara district, Rajasthan, India.The primaryhost rocks of the Cu, Pb, Zn mineralization in the area are Banded Magnetite Quartzite (BMQ), unclassified calcareous silicates, and quartzite. We used ratio images derived from the scale and root mean squares (RMS) error imagesusing the multi-range spectral feature fitting (MRSFF) methodto delineate host rocks from the AVIRIS-NG image. The False Color Composites (FCCs) of different relative band depth images, derived from AVIRIS-NG spectral bands, were also used for delineating few minerals. These minerals areeither associated with the surface alteration resulting from the ore-bearing fluid migration orassociated with the redox-controlled supergene enrichments of the ore deposit.The results show that the AVIRIS-NG image products derived in this study can delineate surface signatures of mineralization in 1:10000 to 1:15000 scales to narrow down the targets for detailed exploration.This study alsoidentified the possible structural control over the knownsurface distribution of alteration and lithocap minerals of base metal mineralizationusing the ground-based residual magnetic anomaly map. This observationstrengthens the importance of the identified surface proxiesas an indicator of mineralization. X-ray fluorescence analysis of samples collectedfromselected locations within the study area confirms the Cu-Pb-Zn enrichment. The sulfide minerals were also identified in the microphotographs of polished sections of rock samples collected from the places where surface proxies of mineralization were observed in the field. This study justified the investigation to utilize surface signatures of mineralization identified using AVIRIS-NG dataand validated using field observations, geophysical, geochemical, and petrographical data.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "AVIRIS images"

1

Rasure, James O. "Aerosol optical depth retrieval with AVIRIS data : a test Of Tafkaa." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02sep%5FRasure.pdf.

Full text
Abstract:
Thesis (M.S. in Meteorology and Physical Oceanography)--Naval Postgraduate School, September 2002.<br>Thesis advisor(s): Philip A. Durkee, Kurt E. Nielsen. Includes bibliographical references (p. 39-40). Also available online.
APA, Harvard, Vancouver, ISO, and other styles
2

Rudd, Lawrence P. "Using AVIRIS Hyperspectral Imagery to Study the Role of Clay Mineralogy in Colorado Plateau Debris-Flow Initiation." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1339%5F1%5Fm.pdf&type=application/pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Shigyo, de Segami Viviana, and Merens Diana Aviles. "GEUSSA: Metodología de Gestión de Espacios Urbanos Sostenibles Shigyo-Avilés." Universidad Peruana de Ciencias Aplicadas (UPC), 2014. http://hdl.handle.net/10757/337030.

Full text
Abstract:
El articulo presenta la metodología GEUSSA (Gestión de Espacios Urbanos Sostenibles Shigyo-Avilés) que estudia la forma de gestionar sosteniblemente los aspectos socioeconómico, ecológico y funcional de los espacios urbanos, haciéndolos accesibles, seguros y atractivos (ASA). En el contexto de la actual bonanza económica peruana y la apertura de modernos centros comerciales, existe un contraste entre éstos y el estancamiento de los espacios urbanos donde se localizan. Generalmente, podemos observar que estos nuevos centros se ubican en zonas donde previamente ocurrieron procesos de deterioro urbano debido a un cambio de funciones o decrepitud de las existentes. Para este escenario, se analizan un conjunto de variables que integradas a criterio de los autores de la metodología, permiten entender la dinámica de los espacios urbanos y clarificar su comportamiento para la gestión de su regeneración urbana.
APA, Harvard, Vancouver, ISO, and other styles
4

Jia, Xiuping Electrical Engineering Australian Defence Force Academy UNSW. "Classification techniques for hyperspectral remote sensing image data." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Electrical Engineering, 1996. http://handle.unsw.edu.au/1959.4/38713.

Full text
Abstract:
Hyperspectral remote sensing image data, such as that recorded by AVIRIS with 224 spectral bands, provides rich information on ground cover types. However, it presents new problems in machine assisted interpretation, mainly in long processing times and the difficulties of class training due to the low ratio of number of training samples to the number of bands. This thesis investigates feasible and efficient feature reduction and image classification techniques which are appropriate for hyperspectral image data. The study is reported in three parts. The first concerns a deterministic approach for hyperspectral data interpretation. Multigroup and multiple threshold spectral coding procedures, and associated techniques for spectral matching and classification, are proposed and tested. By coding on subgroups of bands using one or three thresholds, spectral searching and matching becomes simple, fast and free of the need for radiometric correction. Modifications of existing statistical techniques are proposed in the second part of the investigation A block-based maximum likelihood classification technique is developed. Several subgroups are formed from the complete set of spectral bands in the data, based on the properties of global correlation among the bands. Subgroups which are poorly correlated with each other are treated independently using conventional maximum likelihood classification. Experimental results demonstrate that, when using appropriate subgroup sizes, the new method provides a compromise among classification accuracy, processing time and available training pixels. Furthermore, a segmented, and possibly multi-layer, principal components transformation is proposed as a possible feature reduction technique prior to classification, and for effective colour display. The transformation is performed efficiently on each of the highly correlated subgroups of bands independently. Selected features from each transformed subgroup can be then transformed again to achieve a satisfactory data reduction ratio and to generate the three most significant components for colour display. Classification accuracy is improved and high quality colour image display is achieved in experiments using two AVIRIS data sets.
APA, Harvard, Vancouver, ISO, and other styles
5

Rahgozar, Saeed. "Coherent Structures in a Turbulent Boundary Layer Under a Strong Adverse Pressure Gradient." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/29755/29755.pdf.

Full text
Abstract:
La présente thèse vise à améliorer notre compréhension de l’organisation interne des écoulements turbulents en analysant les caractéristiques des structures cohérentes dans une couche limite turbulente non canonique. L’écoulement étudié est la région externe d’une couche limite turbulente soumise à un gradient de pression adverse dans des con- ditions semblables à celles existant à l’extrados d’une aile d’avion à fort angle d’attaque en situation de décollement de bord de fuite. Diverses bases de données expérimentales et numériques ont été utilisées afin de réaliser les objectifs spécifiques de la thèse. Les principales bases de données ont été acquises en effectuant des mesures par vélocimétrie par images de particules (PIV) à deux composantes dans des plans dans une soufflerie à couche limite subsonique. Les autres bases de données ont été obtenues d’autres groupes de recherche ou ont été les anciennes bases de données de notre groupe. Deux grandes catégories de structures cohérentes, les structures à grande échelle de quantité de mouvement longitudinale et les structures tourbillonnaires, ont été prises en compte. Afin de détecter et de caractériser ces structures, de nouvelles techniques de reconnaissance de formes, de classification des structures et d’analyse statistique ont été mises au point. Il a été démontré que les structures cohérentes considérées sont présentes et fréquentes dans l’écoulement étudié. Les dimensions et l’organisation spatiale des structures à grande échelle sont généralement comparables à celles déjà rapportées pour de telles structures dans la région de recouvrement des couches limites turbulentes à gradient de pression nul. Il apparaît toutefois que le gradient de pression adverse affecte la fréquence d’apparition et la distribution des longueurs de ces structures allongées, surtout dans la partie inférieure de la région externe. Concernant les tourbillons, diverses analy- ses ont montré que des valeurs typiques de résolution spatiale et des niveaux typiques d’incertitudes aléatoires de mesures PIV ont des effets significatifs sur les paramètres des tourbillons. Les paramètres des tourbillons extraits des bases de données PIV exis- tantes doivent donc être interprétés avec prudence. En prenant en compte les effets de la résolution spatiale et des erreurs de mesure, nous trouvons que tous les paramètres des tourbillons, lorsque moyennés à travers la région externe, sont raisonnablement comparables dans les couches limites turbulentes à gradient de pression nul et adverse malgré le fait que ce sont des écoulements très différents.<br>The present thesis is an attempt to further enhance our understanding of the inner organization of turbulent flows by analyzing the characteristics of coherent structures in a non-canonical turbulent boundary layer. The flow studied was the outer region of an adverse-pressure-gradient turbulent boundary layer under external flow conditions similar to those found on the suction side of airfoils at high angle of attack with trailing edge detachment. Various experimental and numerical databases were employed in order to realize the specific objectives of the thesis. The main databases were acquired by performing two-component planar particle image velocimetry (PIV) measurements in a low-speed boundary-layer wind tunnel. The other databases were obtained from other research groups or were existing older database of the group. Two important categories of coherent structures, namely large-scale momentum structures and vortical structures were considered. In order to detect and characterize these structures novel techniques of pattern recognition, structure classification and statistical analysis were developed. It has been shown that the considered coherent structures are present and frequent in the present flow. The dimensions and arrangement of large-scale momentum struc- tures are generally comparable to those previously reported for such structures in the overlap region of zero-pressure-gradient turbulent boundary layers. It is however shown that the adverse pressure gradient affects both the frequency of appearance and the length distribution of these streaky structures especially in the lower part of the outer region. With regards to vortices, various analyses showed that typical values of spa- tial resolution and typical levels of random measurement uncertainties of planar PIV measurements have significant effects on the vortex parameters. The vortex parameters extracted from the existing PIV databases have therefore to be interpreted with caution. Taking spatial resolution and measurement error effects into account, it is found that all the vortex parameters, when averaged across the outer region, are reasonably com- parable in the zero-pressure-gradient and adverse-pressure-gradient turbulent boundary layers despite the fact that these are very different flows.
APA, Harvard, Vancouver, ISO, and other styles
6

Divouron, Éric. "Étude du couplage aérothermique fluide/solide en conditions instationnaires dans une cavité nacelle de turboréacteur." Toulouse, ISAE, 2009. http://www.theses.fr/2009ESAE0006.

Full text
Abstract:
Ce travail s'inscrit dans le cadre du développement d'une méthodologie performante pour la réalisation de simulations aérothermiques couplées instationnaires, ceci dans le cas de la géométrie complexe d'une cavité nacelle d'un turboréacteur. La première étape a consisté en la définition, la réalisation et la validation d'un banc d'essais représentatif d'une cavité nacelle, fortement modulable et permettant la réalisation de mesures dynamiques et thermiques dans toute la cavité en conditions aérothermiques variables. La campagne de mesures a alors été réalisée sur deux configurations géométriques afin de mettre en évidence l'effet de l'encombrement sur les champs aérothermiques, tant en conditions stabilisées qu'en conditions transitoires. Ces mesures permettent une meilleure compréhension des écoulements en milieu confiné et fournissent une base de données de référence pour la validation du couplage numérique instationnaire avec des incertitudes quantifiées pour chaque mesure. La troisième étape porte sur la réalisation de simulations numériques du fluide seul et du couplage fluide/solide sur la chaîne de calcul CEDRE, développée par l’ONERA. Ces simulations sont confrontées aux mesures et la qualité des résultats est évaluée par l'introduction d'une norme de validation qui prenne en compte les différentes sources d'erreur.
APA, Harvard, Vancouver, ISO, and other styles
7

Hua, Minh Duc. "Contributions au contrôle automatique de véhicules aériens." Phd thesis, Université de Nice Sophia-Antipolis, 2009. http://tel.archives-ouvertes.fr/tel-00460801.

Full text
Abstract:
Le contrôle automatique de véhicules sous-actionnés suscite depuis de nombreuses années un grand intérêt pour des applications diverses et variées. Cette thèse est consacrée au problème général du contrôle automatique de véhicules aériens, en particulier des véhicules à décollage et atterrissage vertical. Ce travail présente deux contributions théoriques. La première contribution concerne le développement d'une approche de commande générique pour une large classe de véhicules sous-actionnés. Cette approche exploite la structure d'actionnement commune à la plupart de véhicules conçus par l'homme, à savoir une seule commande en poussée dans une direction privilégiée du véhicule et un actionnement complet de la dynamique de rotation. La méthode de synthèse est conçue de façon incrémentale afin de traiter différents modes opérationnels: stabilisation de la direction de poussée, de la vitesse, ou de la position du véhicule. Une nouvelle technique d'intégrateur non-linéaire est proposée afin de garantir un comportement robuste vis-à-vis de perturbations extérieures ou d'erreurs de modèle. La seconde contribution concerne deux nouvelles méthodes d'estimation d'attitude du véhicule à partir de mesures fournies par une centrale inertielle et de mesures GPS. Les solutions proposées utilisent la mesure de vitesse linéaire pour estimer l'accélération du véhicule, et améliorent significativement la précision de l'attitude estimée, notamment en cas d'accélérations importantes du système.
APA, Harvard, Vancouver, ISO, and other styles
8

Jovančević, Igor. "Exterior inspection of an aircraft using a Pan-Tilt-Zoom camera and a 3D scanner moved by a mobile robot : 2D image processing and 3D point cloud analysis." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2016. http://www.theses.fr/2016EMAC0023/document.

Full text
Abstract:
Cette thèse s’inscrit dans le cadre d’un projet industriel multi-partenaires ayant pour objectif le développement d’un robot mobile collaboratif (un cobot), autonome dans ses mouvements au sol, capable de réaliser l’inspection visuelle d’un aéronef, à la fois en phase de petite ou grande maintenance dans un hangar ou en phase de pré-vol sur le tarmac d’un aéroport. Le cobot est équipé de capteurs lui permettant d’effectuer ses tâches de navigation autonome, mais également d’un ensemble de capteurs optiques constituant la tête d’inspection : une caméra orientable Pan-Tilt-Zoom et un scanner 3D qui délivrent respectivement des données sous forme d’images 2D et de nuages de points 3D. L’objectif de la thèse est de développer des algorithmes d’analyse d’images 2D et de nuages de points 3D, afin d’établir un diagnostic sur l’état de l’avion et son aptitude à voler. Nous avons développé des algorithmes pour vérifier certains éléments de l’appareil, tels que valves, portes, capteurs, pneus ou moteurs, et également pour détecter et caractériser des dommages 3D sur le fuselage (impacts, rayures, etc.). Nous avons exploité dans nos algorithmes les connaissances a priori disponibles, en particulier le modèle 3D CAO de l’avion (un AIRBUS A320 dans le cadre de nos essais). Durant ces travaux de la thèse, nous avons pu répondre à deux besoins (parfois antagonistes) : développer des algorithmes d’inspection rapides et robustes, mais également répondre aux exigences spécifiques d’un projet industriel qui visait à développer un prototype opérationnel. Nous nous sommes attachés à développer des algorithmes les plus génériques possibles, de manière à ce qu’ils puissent être utilisés pour d’autres types d’inspection, tels que l’inspection de bâtiments ou de navires par exemple. Nous avons aussi contribué au développement du prototype (robot mobile équipé de capteurs) en développant le module de contrôle des capteurs d’inspection et en intégrant nos codes sur le robot avec les autres modules développés par les partenaires. Le prototype a fait l’objet de nombreux essais en hangar de maintenance ou sur tarmac<br>This thesis makes part of an industry oriented multi-partners project aimed at developing a mobile collaborative robot (a cobot), autonomous in its movements on the ground, capable of performing visual inspection of an aircraft during short or long maintenance procedures in the hangar or in the pre-flight phase on the tarmac. The cobot is equipped with sensors for realizing its navigation tasks as well as with a set of optical sensors which constitute the inspection head: an orientable Pan-Tilt-Zoom visible light camera and a three-dimensional scanner, delivering data in the format of two-dimensional images and three-dimensional point clouds, respectively. The goal of the thesis is to propose original approaches for processing 2D images and 3D clouds, with intention to make a decision with respect to the flight readiness of the airplane. We developed algorithms for verification of the aircraft items such as vents, doors, sensors, tires or engine as well as for detection and characterization of three-dimensional damages on the fuselage. We integrated a-priori knowledge on the airplane structure, notably numerical three-dimensional CAD model of the Airbus-A320. We argue that with investing effort to develop robust enough algorithms and with the help of existing optical sensors to acquire suitable data, we can come up with non-invasive, accurate, and time-efficient system for automatic airplane exterior inspection. The thesis work was placed in between two main requirements: develop inspection algorithms which could be as general as possible and also meet the specific requirements of an industry oriented project. Often, these two goals do not go along and the balance had to be made. On one side, we were aiming to design and assess the approaches that can be employed on other large structures, for ex. buildings, ships. On the other hand, writing source code for controlling sensors as well as integrating our whole developed source code with other modules on the real-time robotic system, were necessary in order to demonstrate the feasibility of our robotic prototype
APA, Harvard, Vancouver, ISO, and other styles
9

Vandeveld, Thierry F. R. "Etude expérimentale multisensorielle de la dynamique des impacts d'oiseaux sur structures d'avions." Doctoral thesis, Universite Libre de Bruxelles, 2009. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210274.

Full text
Abstract:
Chaque année, d'innombrables collisions se produisent entre des avions en vol et des oiseaux. L'impact aviaire, menace redoutée par les pilotes, concerne tant l'aviation civile que son pendant militaire. Les statistiques démontrent que, même si fort heureusement le nombre d'accidents graves reste limité, les incidents sont de plus en plus nombreux.<p>Parmi les acteurs qui luttent contre ce danger, les constructeurs d'avions jouent un rôle prépondérant. Contraints par des réglementations internationales, ils s'attachent à produire des éléments de structure qui résistent à l'impact d'oiseaux.<p>Dans la mise au point de leur produits, les avionneurs démontrent cette résistance à l'aide d'essais d'impact :on accélère un simulant d'oiseau jusqu'à la vitesse voulue -- de l'ordre de la vitesse de croisière nominale de l'avion -- et on le projette sur un aileron ou un morceau de fuselage. <p><p>La présente thèse doctorale, co-dirigée par les professeurs Philippe Bouillard de l'ULB et Marc Pirlot de l'ERM, contribue doublement à l'amélioration de ces techniques d'essais dynamiques.<p><p><p>D'une part, elle réalise la mise au point et la validation d'un lanceur pyrotechnique à double étage pour l'accélération du simulant d'oiseau. Un canon de calibre 20 mm est combiné avec un accélérateur de calibre 160 mm. La combustion d'un mélange de poudre propulsive contenu dans une douille adaptée génère les gaz à haute température et à haute pression nécessaires à l'accélération d'un simulant d'oiseau dûment confiné dans un conteneur de protection. Un dispositif de séparation arrête le conteneur afin que seul le simulant d'oiseau percute l'élément d'avion à l'essai. La solution pyrotechnique à double étage mise au point est validée par de nombreux tirs instrumentés en vitesse, en accélération et en pression ;elle se révèle conforme aux exigences de sécurité et de reproductibilité. Le lanceur pyrotechnique présente par rapport aux solutions pneumatiques, utilisées à notre connaissance dans tous les autres centres d'essais, des avantages indéniables de compacité ainsi que de rapidité et de souplesse de mise en oeuvre.<p><p><p>D'autre part, la migration des alliages métalliques vers les matériaux composites est amorcée depuis plusieurs années déjà dans le monde de la construction aéronautique. Pour optimiser les structures, une connaissance des caractéristiques de ces matériaux est indispensable. Les modes de rupture font partie des caractéristiques encore mal connues. La mesure du déplacement hors-plan lors du tir sur panneaux plans est une des manières de quantifier le comportement du matériau sous l'action d'un impact. Cette mesure s'opère généralement de manière statique, après le tir. Une méthode de mesure dynamique a été mise au point, basée sur l'emploi de techniques de stéréoscopie par corrélation numérique d'images. Cette technique a été validée au moyen d'une méthode métrologique indépendante d'extensométrie laser. <p><p><p>ABSTRACT<p><p>Countless collisions occur each year between airplanes and birds. Bird strike is a concern to both civilian and militay aircraft. Statistics show that, although the number of serious accidents fortunately remains low, the number of incidents keeps increasing.<p>Amongst the actors tackling this issue, aircraft manufacturers play an important role. In compliance with international regulations, they have to produce structural elements that withstand bird impact. During the development of their products, aircraft manufacturers have to demonstrate this resistance through bird impact trials :a bird surrogate is accelerated to the required velocity - often close to the nominal cruise speed of the aircraft - and launched onto a flap or a piece of fuselage.<p><p>This PhD thesis has been co-supervised by Professor Philippe Bouillard (ULB) and Professor Marc Pirlot (ERM-KMS). Its contribution to the improvement of the aforementioned dynamic trials is twofold.<p><p><p>One one hand, a two-stage pyrotechnical launcher for bird surrogates has been developed and assessed. A 20 mm caliber gun is connected to a 160 mm diameter launcher. The combustion of a propellant mixture in a cartridge case generates high pressure, high temperature gases which accelerate a bird surrogate protected by a cylindrical container. A stripper refrains the container from hitting the target pane. <p>The pyrotechnical solution has been assessed through an important number of firings where pressure, velocity and acceleration have been measured. The solution has proven compliance with both the safety requirements and the repeatability specifications. Its advantages compared to the pneumatic solutions used, as far as we know, in all other test centres, include compactedness as well as flexibility and high firing rate.<p><p><p>On the other hand, migration towards composite materials has been initiated years ago in the area of aeronautical constructions.<p>To optimize structures, a thorough knowledge of these new materials is required. Failure modes belong to the still badly known features of carbon reinforced plastics. Measuring the out-of-plane deformation when firing on a flat pane is one way of quantifying the material's behaviour under impact. This measurement is most frequently made in a static way, after completion of the firing. A dynamic measuring method has been developed, based upon stereoscopic digital image correlation techniques. This technique has been validated by means of an independent laser extensometer measuring method. <p><br>Doctorat en Sciences de l'ingénieur<br>info:eu-repo/semantics/nonPublished
APA, Harvard, Vancouver, ISO, and other styles
10

Ben, Abdallah Hamdi. "Inspection d'assemblages aéronautiques par vision 2D/3D en exploitant la maquette numérique et la pose estimée en temps réel Three-dimensional point cloud analysis for automatic inspection of complex aeronautical mechanical assemblies Automatic inspection of aeronautical mechanical assemblies by matching the 3D CAD model and real 2D images." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2020. http://www.theses.fr/2020EMAC0001.

Full text
Abstract:
Cette thèse s'inscrit dans le contexte du développement d'outils numériques innovants au service de ce qui est communément désigné par Usine du Futur. Nos travaux de recherche ont été menés dans le cadre du laboratoire de recherche commun "Inspection 4.0" entre IMT Mines Albi/ICA et la Sté DIOTA spécialisée dans le développement d'outils numériques pour l'Industrie 4.0. Dans cette thèse, nous nous sommes intéressés au développement de systèmes exploitant des images 2D ou des nuages de points 3D pour l'inspection automatique d'assemblages mécaniques aéronautiques complexes (typiquement un moteur d'avion). Nous disposons du modèle CAO de l'assemblage (aussi désigné par maquette numérique) et il s'agit de vérifier que l'assemblage a été correctement assemblé, i.e que tous les éléments constituant l'assemblage sont présents, dans la bonne position et à la bonne place. La maquette numérique sert de référence. Nous avons développé deux scénarios d'inspection qui exploitent les moyens d'inspection développés par DIOTA : (1) un scénario basé sur une tablette équipée d'une caméra, portée par un opérateur pour un contrôle interactif temps-réel, (2) un scénario basé sur un robot équipé de capteurs (deux caméras et un scanner 3D) pour un contrôle totalement automatique. Dans les deux scénarios, une caméra dite de localisation fournit en temps-réel la pose entre le modèle CAO et les capteurs mis en œuvre (ce qui permet de relier directement la maquette numérique 3D avec les images 2D ou les nuages de points 3D analysés). Nous avons d'abord développé des méthodes d'inspection 2D, basées uniquement sur l'analyse d'images 2D puis, pour certains types d'inspection qui ne pouvaient pas être réalisés à partir d'images 2D (typiquement nécessitant la mesure de distances 3D), nous avons développé des méthodes d'inspection 3D basées sur l'analyse de nuages de points 3D. Pour l'inspection 3D de câbles électriques présents au sein de l'assemblage, nous avons proposé une méthode originale de segmentation 3D des câbles. Nous avons aussi traité la problématique de choix automatique de point de vue qui permet de positionner le capteur d'inspection dans une position d'observation optimale. Les méthodes développées ont été validées sur de nombreux cas industriels. Certains des algorithmes d’inspection développés durant cette thèse ont été intégrés dans le logiciel DIOTA Inspect© et sont utilisés quotidiennement chez les clients de DIOTA pour réaliser des inspections sur site industriel<br>This thesis makes part of a research aimed towards innovative digital tools for the service of what is commonly referred to as Factory of the Future. Our work was conducted in the scope of the joint research laboratory "Inspection 4.0" founded by IMT Mines Albi/ICA and the company DIOTA specialized in the development of numerical tools for Industry 4.0. In the thesis, we were interested in the development of systems exploiting 2D images or (and) 3D point clouds for the automatic inspection of complex aeronautical mechanical assemblies (typically an aircraft engine). The CAD (Computer Aided Design) model of the assembly is at our disposal and our task is to verify that the assembly has been correctly assembled, i.e. that all the elements constituting the assembly are present in the right position and at the right place. The CAD model serves as a reference. We have developed two inspection scenarios that exploit the inspection systems designed and implemented by DIOTA: (1) a scenario based on a tablet equipped with a camera, carried by a human operator for real-time interactive control, (2) a scenario based on a robot equipped with sensors (two cameras and a 3D scanner) for fully automatic control. In both scenarios, a so-called localisation camera provides in real-time the pose between the CAD model and the sensors (which allows to directly link the 3D digital model with the 2D images or the 3D point clouds analysed). We first developed 2D inspection methods, based solely on the analysis of 2D images. Then, for certain types of inspection that could not be performed by using 2D images only (typically requiring the measurement of 3D distances), we developed 3D inspection methods based on the analysis of 3D point clouds. For the 3D inspection of electrical cables, we proposed an original method for segmenting a cable within a point cloud. We have also tackled the problem of automatic selection of best view point, which allows the inspection sensor to be placed in an optimal observation position. The developed methods have been validated on many industrial cases. Some of the inspection algorithms developed during this thesis have been integrated into the DIOTA Inspect© software and are used daily by DIOTA's customers to perform inspections on industrial sites
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "AVIRIS images"

1

Patrick, PERRIER. AVIONS DE COLLECTION en images. MARINES NANTES, 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "AVIRIS images"

1

Ponomarenko, Nikolay, Vladimir Lukin, Mikhail Zriakhov, and Arto Kaarna. "Improved Grouping and Noise Cancellation for Automatic Lossy Compression of AVIRIS Images." In Advanced Concepts for Intelligent Vision Systems. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-17691-3_24.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Govil, Himanshu, Mahesh Kumar Tripathi, Prabhat Diwan, and Monika. "Comparative Evaluation of AVIRIS-NG and Hyperion Hyperspectral Image for Talc Mineral Identification." In Data Management, Analytics and Innovation. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-9364-8_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Plaza, Antonio, Javier Plaza, David Valencia, and Pablo Martiez. "Parallel Segmentation of Multi-Channel Images Using Multi-Dimentional Mathematical Morphology." In Advances in Image and Video Segmentation. IGI Global, 2006. http://dx.doi.org/10.4018/978-1-59140-753-9.ch013.

Full text
Abstract:
Multi-channel images are characteristic of certain applications, such as medical imaging or remotely sensed data analysis. Mathematical morphology-based segmentation of multi-channel imagery has not been fully accomplished yet, mainly due to the lack of vector-based strategies to extend classic morphological operations to multidimensional imagery. For instance, the most important morphological approach for image segmentation is the watershed transformation, a hybrid of seeded region growing and edge detection. In this chapter, we describe a vector-preserving framework to extend morphological operations to multi-channel images, and further propose a fully automatic multi-channel watershed segmentation algorithm that naturally combines spatial and spectral/temporal information. Due to the large data volumes often associated with multi-channel imaging, this chapter also develops a parallel implementation strategy to speed up performance. The proposed parallel algorithm is evaluated using magnetic resonance images and remotely sensed hyperspectral scenes collected by the NASA Jet Propulsion Laboratory Airborne Visible Infra-Red Imaging Spectrometer (AVIRIS).
APA, Harvard, Vancouver, ISO, and other styles
4

Bhargavi, Peyakunta, and Singaraju Jyothi. "Big Data and Internet of Things for Analysing and Designing Systems Based on Hyperspectral Images." In Environmental Information Systems. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7033-2.ch026.

Full text
Abstract:
The recent development of sensors remote sensing is an important source of information for mapping and natural and man-made land covers. The increasing amounts of available hyperspectral data originates from AVIRIS, HyMap, and Hyperion for a wide range of applications in the data volume, velocity, and variety of data contributed to the term big data. Sensing is enabled by Wireless Sensor Network (WSN) technologies to infer and understand environmental indicators, from delicate ecologies and natural resources to urban environments. The communication network creates the Internet of Things (IoT) where sensors and actuators blend with the environment around us, and the information is shared across platforms in order to develop a common operating picture (COP). With RFID tags, embedded sensor and actuator nodes, the next revolutionary technology developed transforming the Internet into a fully integrated Future Internet. This chapter describes the use of Big Data and Internet of the Things for analyzing and designing various systems based on hyperspectral images.
APA, Harvard, Vancouver, ISO, and other styles
5

Bhargavi, Peyakunta, and Singaraju Jyothi. "Big Data and Internet of Things for Analysing and Designing Systems Based on Hyperspectral Images." In Exploring the Convergence of Big Data and the Internet of Things. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2947-7.ch017.

Full text
Abstract:
The recent development of sensors remote sensing is an important source of information for mapping and natural and man-made land covers. The increasing amounts of available hyperspectral data originates from AVIRIS, HyMap, and Hyperion for a wide range of applications in the data volume, velocity, and variety of data contributed to the term big data. Sensing is enabled by Wireless Sensor Network (WSN) technologies to infer and understand environmental indicators, from delicate ecologies and natural resources to urban environments. The communication network creates the Internet of Things (IoT) where sensors and actuators blend with the environment around us, and the information is shared across platforms in order to develop a common operating picture (COP). With RFID tags, embedded sensor and actuator nodes, the next revolutionary technology developed transforming the Internet into a fully integrated Future Internet. This chapter describes the use of Big Data and Internet of the Things for analyzing and designing various systems based on hyperspectral images.
APA, Harvard, Vancouver, ISO, and other styles
6

Robert Chen, F., Zhongping Lee, and Kendall L. Carder. "An Bathymetric Algorithm of Water-Leaving Radiances in Aviris Imagery: Use of A Reflectance Model." In Space Remote Sensing of Subtropical Oceans, Proceedings of COSPAR Colloquium on Space Remote Sensing of Subtropical Oceans (SRSSO). Elsevier, 1997. http://dx.doi.org/10.1016/s0964-2749(97)80026-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Duguet, Emmanuelle, and Valeria Muledda. "Avis au lecteur – à propos des images de ce livre L’Archive du Jeu d’Orchestre." In Le Jeu d'Orchestre. Presses universitaires du Septentrion, 2015. http://dx.doi.org/10.4000/books.septentrion.12968.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Nachmani, Amikam. "A triangle in crisis: violence, aggression, anti-Israel and anti-Semitic phenomena." In Haunted Presents. Manchester University Press, 2017. http://dx.doi.org/10.7228/manchester/9781784993078.003.0006.

Full text
Abstract:
Muslims in Europe are often the source of enmity against Jews and Israel. Recent events in the Middle East such as Israel’s winter 2008/09 “Cast Lead” Operation in Hamas-controlled Gaza and the Egyptian army’s 2013 overthrow of the Muslim Brotherhood regime, as well as internecine Muslim wars in North Africa and the Middle East have caused backlashes against European Jews. Though studies show that the majority of Europe’s Muslim community members are primarily concerned with daily family life rather than issues abroad, extremist elements, often European born, perpetrated the 7/7 London Transport (2005) bombings, the 2012 shooting deaths at the Jewish school in Toulouse, France, the brutal anti-Semitic 2006 Ilan Halimi murder and the 2015 Charlie Hebdo killings both in Paris, and 2016 Brussels massacres. Britain’s Muslim community exported the two suicide bombers who attacked Tel Aviv’s Mike’s Place Bar (2003). Muslim anti-Jewish attitudes and acts are often the product of religious training by imported imams; anti-establishment, anti-Jewish and anti-Zionist education; and social and ethnic issues that include police brutality, crime and imprisonment, and low self-esteem and self-worth in an alien environment.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "AVIRIS images"

1

Kaarna, Arto, Pekka J. Toivanen, and Pekka Keranen. "Compression of multispectral AVIRIS images." In AeroSense 2002, edited by Sylvia S. Shen and Paul E. Lewis. SPIE, 2002. http://dx.doi.org/10.1117/12.478793.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Cui, Kangning, and Robert J. Plemmons. "Unsupervised Classification of Aviris-NG Hyperspectral Images." In 2021 11th Workshop on Hyperspectral Imaging and Signal Processing: Evolution in Remote Sensing (WHISPERS). IEEE, 2021. http://dx.doi.org/10.1109/whispers52202.2021.9484006.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Ponomarenko, N. N., V. V. Lukin, M. S. Zriakhov, A. Kaarna, and J. Astola. "An automatic approach to lossy compression of AVIRIS images." In 2007 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2007. http://dx.doi.org/10.1109/igarss.2007.4422833.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Lukin, Vladimir, Nikolay Ponomarenko, Mikhail Zriakhov, and Arto Kaarna. "Two aspects in lossy compression of hypespectral aviris images." In 2008 International Conference on Mathematical Methods in Electromagnetic Theory (MEET). IEEE, 2008. http://dx.doi.org/10.1109/mmet.2008.4580999.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Haltrin, Vladimir I. "Algorithm for atmospheric correction of airborne AVIRIS ocean images." In SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, edited by Luc R. Bissonnette. SPIE, 1998. http://dx.doi.org/10.1117/12.330232.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kaarna, A. "Non-negative Matrix Factorization Features from Spectral Signatures of AVIRIS Images." In 2006 IEEE International Symposium on Geoscience and Remote Sensing. IEEE, 2006. http://dx.doi.org/10.1109/igarss.2006.145.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Wanchen Li, Yanli Cao, and Yuxian Chen. "Methods research for removing the stripe noise based on AVIRIS images." In 2010 International Conference on Future Information Technology and Management Engineering (FITME). IEEE, 2010. http://dx.doi.org/10.1109/fitme.2010.5654880.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Verdebout, Jean, Guido Schmuck, Susan L. Ustin, and Alois J. Sieber. "Multitemporal AVIRIS-images of forested and agricultural units in southern Germany." In Optical Engineering and Photonics in Aerospace Sensing, edited by Gregg Vane. SPIE, 1993. http://dx.doi.org/10.1117/12.157066.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Ponomarenko, N. N., V. V. Lukin, M. S. Zriakhov, A. Kaarna, and J. Astola. "Automatic Approaches to On-Land/On-Board Filtering and Lossy Compression of AVIRIS Images." In IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2008. http://dx.doi.org/10.1109/igarss.2008.4779331.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Giraldo, Diego Garcia, and Ronald W. Yeung. "The Deep-Water-Horizon Spill: Flow-Rate Estimation Based on Satellite Images." In ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/omae2012-84153.

Full text
Abstract:
The “Deep Water Horizon” Mobil Offshore Drilling Unit (MODU) is one of several classes of floatable drilling machines. As a consequence of the accident on April 20, 2010, the worst ecological disaster with regard to oil spills in the US history was generated in the Gulf of Mexico, causing extensive damage to marine and wildlife habitats, as well as the Gulf’s fishing and tourism industries. Since that moment, experts are trying to estimate the total amount of oil being lost into the sea. The objective of this presentation is to report a procedure developed in the first author’s thesis1 an independent and logical estimate of the oil flow rate into the Gulf of Mexico produced by the rupture in this rig. There are a number of possible approaches to estimate the flow rate of oil spilling into the Gulf of Mexico. The Plume Modeling Team has developed an approach by observing video image of the oil/gas mixture escaping from the kinks in the riser and the end of the riser pipe. The Mass Balance Team has developed a range of values using USGS (US Geological Survey) and NOAA (National Oceanic and Atmospheric Administration) data analysis collected from NASA’s (National Aeronautics and Space Administration) Airborne Visible InfraRed Imaging Spectrometer (AVIRIS). Finally, a reality-check estimate was based on the amount of oil collected by the Riser Insertion Tube Tool (RITT) plus the estimate of how much oil is escaping from the RITT, and from the kink in the riser. However, there are several limitations in each of these techniques.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'AVIRIS images' for particular source types:
Journal articles Dissertations / Theses
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography