Descripteur
Documents disponibles dans cette catégorie (1770)
![](./images/expand_all.gif)
![](./images/collapse_all.gif)
Etendre la recherche sur niveau(x) vers le bas
Conception de modèles 3D précis pour un suivi 4D optimisé des ouvrages hydrauliques linéaires : intérêt et particularité du drone / Vincent Tournadre in La Houille Blanche, revue internationale de l'eau, vol 2016 n° 3 (juin 2016)
![]()
[article]
Titre : Conception de modèles 3D précis pour un suivi 4D optimisé des ouvrages hydrauliques linéaires : intérêt et particularité du drone Titre original : Accurate 3D models for a 4D monitoring of linear hydraulic structures: opportunities and characteristics of UAV Type de document : Article/Communication Auteurs : Vincent Tournadre , Auteur ; Jacques Beilin
, Auteur ; Marc Pierrot-Deseilligny
, Auteur ; Paul-Henri Faure, Auteur
Année de publication : 2016 Article en page(s) : pp 33 - 38 Note générale : bibliographie Langues : Français (fre) Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] auscultation d'ouvrage
[Termes IGN] code source libre
[Termes IGN] contrôle métrologique
[Termes IGN] digue
[Termes IGN] données spatiotemporelles
[Termes IGN] drone
[Termes IGN] image captée par drone
[Termes IGN] logiciel libre
[Termes IGN] métrologie géodésique
[Termes IGN] métrologie tridimensionnelle
[Termes IGN] modèle 3D du site
[Termes IGN] objet géographique linéaire
[Termes IGN] photogrammétrie aérienne
[Termes IGN] photogrammétrie métrologiqueRésumé : (auteur) Confronted with the ageing of its dikes and with the sometimes degraded conditions of access, the Compagnie Nationale du Rhône, the 2nd producer of hydro electricity in France, wishes to develop new systems of auscultation complementary to the sensors and visual inspections already deployed. The developments of drones, photographic sensors and algorithms of automatic calculations of 3D modelling from multi-stereoscopic images allow today to obtain the fine geometry of linear works via 3D models. At present, with a network of point to the dense ground, the reachable precision is of the order of 5 cm. In order to achieve the desired specifications (± 1 cm ± 3 cm) while minimizing the number of points on the ground, and thus the time field, CNR and the National Institute of Geographic and Forest Information (IGN) have established a partnership resulting in the completion of a research thesis on metrology by light airborne photogrammetry applied to the monitoring of developments dikes. The paper attempts to present the context of the project through the description of the current monitoring of embankments and of the new needs in auscultation of CNR. The following, based on a case study on the dike of the Palière is introducing advanced photogrammetric methods to mid 2015 to reach centimeter details with only 1 setting point ground for every 100 meters. Located at the interface of the world of Drones, of Research in photogrammetric algorithms and of concessionaires needs, the project will lead to the end of 2015 to an enhanced testing system allowing centimeter monitoring of sensitive embankments areas. The new photogrammetric algorithms written in an open source environment will be open to the entire scientific community and solved problems (high precision geo measures on linear structures) will be used by other distributors on other works with the same geometry. Numéro de notice : A2016--194 Affiliation des auteurs : ENSG+Ext (2012-2019) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : 10.1051/lhb/2016028 Date de publication en ligne : 19/07/2016 En ligne : https://doi.org/10.1051/lhb/2016028 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91848
in La Houille Blanche, revue internationale de l'eau > vol 2016 n° 3 (juin 2016) . - pp 33 - 38[article]Context-dependent detection of non-linearly distributed points for vegetation classification in airborne LiDAR / Denis Horvat in ISPRS Journal of photogrammetry and remote sensing, vol 116 (June 2016)
![]()
[article]
Titre : Context-dependent detection of non-linearly distributed points for vegetation classification in airborne LiDAR Type de document : Article/Communication Auteurs : Denis Horvat, Auteur ; Borut Žalik, Auteur ; Domen Mongus, Auteur Année de publication : 2016 Article en page(s) : pp 1 – 14 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] analyse de sensibilité
[Termes IGN] classification dirigée
[Termes IGN] détection automatique
[Termes IGN] distribution spatiale
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] méthode robuste
[Termes IGN] morphologie mathématique
[Termes IGN] prise en compte du contexte
[Termes IGN] végétation
[Termes IGN] zone ruraleRésumé : (auteur) This paper proposes a new method for the detection of vegetation in LiDAR data. As vegetation points are characterised by non-linear distributions, they are efficiently recognised based-on large errors obtained when applying the local fitting of planar surfaces. In addition, three contextual filters are introduced capable of dealing with those exceptions that do not conform with previous interpretations. Namely, they are designed for detecting overgrowing vegetation, small objects attached to the planar surfaces (such as balconies, chimneys, and noise within the buildings) and small objects that do not belong to vegetation (vehicles, statues, fences). During the validation, the proposed method achieved over 97% correctness as well as completeness of vegetation recognition in rural areas while its average accuracy in urban settings was 90.7% in terms of F1F1-scores. The method uses only three input parameters and allows for efficient compensation between completeness and correctness, without significantly affecting the F1F1-score. Sensitivity analysis of the method also confirmed the robustness against a sub-optimal definition of the input parameters. Numéro de notice : A2016-576 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2016.02.011 En ligne : https://doi.org/10.1016/j.isprsjprs.2016.02.011 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81706
in ISPRS Journal of photogrammetry and remote sensing > vol 116 (June 2016) . - pp 1 – 14[article]Geometric accuracy of topographical objects at Polish topographic maps / Radzym Lawniczack in Geodesy and cartography, vol 65 n° 1 (June 2016)
![]()
[article]
Titre : Geometric accuracy of topographical objects at Polish topographic maps Type de document : Article/Communication Auteurs : Radzym Lawniczack, Auteur ; Jaroslaw Kubiak, Auteur Année de publication : 2016 Article en page(s) : pp 55 - 66 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] analyse diachronique
[Termes IGN] carte topographique
[Termes IGN] coordonnées GPS
[Termes IGN] données vectorielles
[Termes IGN] EUPOS
[Termes IGN] lac
[Termes IGN] objet cartographique
[Termes IGN] objet géographique
[Termes IGN] Pologne
[Termes IGN] précision de localisation
[Termes IGN] précision des donnéesRésumé : (Auteur) The objective of research concerned verifying the accuracy of the location and shape of selected lakes presented on topographical maps from various periods, drawn up on different scales. The area of research covered lakes situated in North-Western Poland on the Międzychód-Sieraków Lakeland. An analysis was performed of vector maps available in both analogue and digital format. The scales of these studies range from 1:50 000 to 1:10 000. The source materials were current for the years 1907 through 2013. The shape and location of lakes have been verified directly by means of field measurements performed using the GPS technology with an accuracy class of RTK. An analysis was performed of the location and shape of five lakes. The analysed water regions were vectorised, and their vector images were used to determine quantitative features: the area and length of the shoreline. Information concerning the analysed lakes obtained from the maps was verified on the basis of direct field measurements performed using a GPS RTK receiver. Use was made of georeferential corrections provided by the NAVGEO service or a virtual reference station generated by the ASG EUPOS system. A compilation of cartographic and field data formed the basis for a comparison of the actual area and the length of the shoreline of the studied lakes. Cartographic analyses made it possible to single out the most reliable cartographic sources, which could be used for the purposes of hydrographical analyses. The course of shorelines shows the attached map. Numéro de notice : A2016-637 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1515/geocart-2016-0003 En ligne : http://dx.doi.org/10.1515/geocart-2016-0003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81840
in Geodesy and cartography > vol 65 n° 1 (June 2016) . - pp 55 - 66[article]Optical remotely sensed time series data for land cover classification: A review / Cristina Gómez in ISPRS Journal of photogrammetry and remote sensing, vol 116 (June 2016)
![]()
[article]
Titre : Optical remotely sensed time series data for land cover classification: A review Type de document : Article/Communication Auteurs : Cristina Gómez, Auteur ; Joanne C. White, Auteur ; Michael A. Wulder, Auteur Année de publication : 2016 Article en page(s) : pp 55 – 72 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] classification automatique
[Termes IGN] détection de changement
[Termes IGN] image Landsat
[Termes IGN] image Sentinel-MSI
[Termes IGN] occupation du sol
[Termes IGN] série temporelle
[Termes IGN] surveillance agricole
[Termes IGN] traitement d'imageRésumé : (auteur) Accurate land cover information is required for science, monitoring, and reporting. Land cover changes naturally over time, as well as a result of anthropogenic activities. Monitoring and mapping of land cover and land cover change in a consistent and robust manner over large areas is made possible with Earth Observation (EO) data. Land cover products satisfying a range of science and policy information needs are currently produced periodically at different spatial and temporal scales. The increased availability of EO data—particularly from the Landsat archive (and soon to be augmented with Sentinel-2 data)—coupled with improved computing and storage capacity with novel image compositing approaches, have resulted in the availability of annual, large-area, gap-free, surface reflectance data products. In turn, these data products support the development of annual land cover products that can be both informed and constrained by change detection outputs. The inclusion of time series change in the land cover mapping process provides information on class stability and informs on logical class transitions (both temporally and categorically). In this review, we present the issues and opportunities associated with generating and validating time-series informed annual, large-area, land cover products, and identify methods suited to incorporating time series information and other novel inputs for land cover characterization. Numéro de notice : A2016-578 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2016.03.008 En ligne : http://dx.doi.org/10.1016/j.isprsjprs.2016.03.008 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81716
in ISPRS Journal of photogrammetry and remote sensing > vol 116 (June 2016) . - pp 55 – 72[article]Qualitative spatial logics for buffered geometries / Heshan Du in Journal of Artificial Intelligence Research, vol 56 (May - August 2016)
![]()
[article]
Titre : Qualitative spatial logics for buffered geometries Type de document : Article/Communication Auteurs : Heshan Du, Auteur ; Natasha Alechina, Auteur Année de publication : 2016 Article en page(s) : pp 693 - 745 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] base de données localisées
[Termes IGN] cohérence des données
[Termes IGN] cohérence géométrique
[Termes IGN] cohérence logique
[Termes IGN] données hétérogènes
[Termes IGN] données localisées des bénévoles
[Termes IGN] espace métrique
[Termes IGN] objet géographique
[Termes IGN] OpenStreetMap
[Termes IGN] relation spatiale
[Termes IGN] zone tamponRésumé : (auteur) This paper describes a series of new qualitative spatial logics for checking consistency of sameAs and partOf matches between spatial objects from different geospatial datasets, especially from crowd-sourced datasets. Since geometries in crowd-sourced data are usually not very accurate or precise, we buffer geometries by a margin of error or a level of tolerance, and define spatial relations for buffered geometries. The spatial logics formalize the notions of `buffered equal' (intuitively corresponding to `possibly sameAs'), `buffered part of' (`possibly partOf'), `near' (`possibly connected') and `far' (`definitely disconnected'). A sound and complete axiomatisation of each logic is provided with respect to models based on metric spaces. For each of the logics, the satisfiability problem is shown to be NP-complete. Finally, we briefly describe how the logics are used in a system for generating and debugging matches between spatial objects, and report positive experimental evaluation results for the system. Numéro de notice : A2016--130 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1613/jair.5140 En ligne : https://doi.org/10.1613/jair.5140 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85122
in Journal of Artificial Intelligence Research > vol 56 (May - August 2016) . - pp 693 - 745[article]Vector attribute profiles for hyperspectral image classification / Erchan Aptoula in IEEE Transactions on geoscience and remote sensing, vol 54 n° 6 (June 2016)
PermalinkHybrid terrain rendering based on the external edge primitive / E.G. Paredes in International journal of geographical information science IJGIS, vol 30 n° 5-6 (May - June 2016)
PermalinkL’imagerie satellitaire stéréoscopique très haute résolution spatiale Pléiades : apport pour les problématiques urbaines / Dominique Hébrard in Signature, n° 60 (mai 2016)
PermalinkQuantifying the completeness of and correspondence between two historical maps: a case study from nineteenth-century Palestine / Gad Schaffer in Cartography and Geographic Information Science, Vol 43 n° 2 (April - May 2016)
PermalinkDie Fortführung des 3D-Gebäudemodells LoD2 in Nordrhein-Westfalen / Marco Oestereich in ZFV, Zeitschrift für Geodäsie, Geoinformation und Landmanagement, Vol 141 n° 3 (Mai - Juni 2016)
PermalinkLes données géographiques 3D pour simuler l'impact de la réglementation urbaine sur la morphologie du bâti / Mickaël Brasebin in Cartes & Géomatique, n° 227 (mars - mai 2016)
PermalinkA GEOBIA framework for the implementation of national and international forest definitions using very high spatial resolution optical satellite data / M. Tompoulidou in Geocarto international, vol 31 n° 3 - 4 (March - April 2016)
PermalinkMapping urban growth of the capital city of Honduras from Landsat data using the impervious surface fraction algorithm / Nguyen-Thanh Son in Geocarto international, vol 31 n° 3 - 4 (March - April 2016)
PermalinkA region-line primitive association framework for object-based remote sensing image analysis / Wang Min in Photogrammetric Engineering & Remote Sensing, PERS, vol 82 n° 2 (February 2016)
PermalinkPermalink