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Les nouveaux enjeux des gestionnaires [Dossier réseaux & SIG] / Fanny Perrin d'Arloz in SIGmag, n° 7 (décembre 2015)
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Titre : Les nouveaux enjeux des gestionnaires [Dossier réseaux & SIG] Type de document : Article/Communication Auteurs : Fanny Perrin d'Arloz, Auteur ; Hubert d' Erceville, Auteur ; Xavier Fodor, Auteur Année de publication : 2015 Article en page(s) : pp 22 - 30 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] gestion d'équipements
[Termes IGN] gestion prévisionnelle
[Termes IGN] infrastructure française des données localisées
[Termes IGN] référentiel géographique
[Termes IGN] réseau informatique
[Termes IGN] réseau technique urbain
[Termes IGN] système d'information géographiqueRésumé : (Auteur) Au-delà de la supervision des équipements et du suivi des travaux à mener selon une réglementation de plus en plus exigeante, les gestionnaires de réseaux exploitent des facettes inédites de leur SIG. Plus que jamais la géomatique se place au coeur de leur process. Numéro de notice : A2015-810 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79049
in SIGmag > n° 7 (décembre 2015) . - pp 22 - 30[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 147-2015071 RAB Revue Centre de documentation En réserve L003 Disponible 147-2015072 RAB Revue Centre de documentation En réserve L003 Disponible A semi-automatic lightweight ontology bridging for the semantic integration of cross-domain geospatial information / Jung-Hong Hong in International journal of geographical information science IJGIS, vol 29 n° 12 (December 2015)
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Titre : A semi-automatic lightweight ontology bridging for the semantic integration of cross-domain geospatial information Type de document : Article/Communication Auteurs : Jung-Hong Hong, Auteur ; Chiao-Ling Kuo, Auteur Année de publication : 2015 Article en page(s) : pp 2223 - 2247 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] croisement spatial
[Termes IGN] inférence sémantique
[Termes IGN] intégration de données
[Termes IGN] ontologie
[Termes IGN] relation sémantiqueRésumé : (Auteur) Semantic integration has gained considerable attention in geographic information system (GIS) interoperability with the goal of conquering semantic heterogeneity. Over the past two decades, ontology engineering has been widely used to resolve semantic integration obstacles. However, most of the previous ontology integration approaches mainly focused on the same type of data with formal ontology. A key challenge is to identify the semantics of cross-domain data generated by different domains from their own perspectives. Given that formal ontology is not always available, this paper proposes a novel semi-automatic approach to determine the semantic relationship of cross-domain concepts based on lightweight ontologies. The semantics of each concept is presented by an extendable and structural definition framework composed of a number of resource description framework triple statements formed by common vocabularies extracted from the free-text definition of the concept. We further propose algorithms to compare the structural definition of concepts and to determine the semantic relationship of concepts between different domains. Finally, the semantic relationship of concepts from different domains is formally presented by the bridge ontology to serve future application needs. The bridge ontology of two GIS-based data, topographic map data and land use data, was developed to demonstrate the feasibility of the proposed approach. The preliminary result shows a faithful and highly automatic semantic integration for cross-domain data. Numéro de notice : A2015-623 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2015.1072200 En ligne : https://doi.org/10.1080/13658816.2015.1072200 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78092
in International journal of geographical information science IJGIS > vol 29 n° 12 (December 2015) . - pp 2223 - 2247[article]
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Titre : Theoretical geodesy Type de document : Article/Communication Auteurs : Andrzej Borkowski, Auteur ; Wieslaw Kosek, Auteur Année de publication : 2015 Article en page(s) : pp 261 - 279 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie
[Termes IGN] estimation statistique
[Termes IGN] fiabilité des données
[Termes IGN] mouvement du pôle
[Termes IGN] série temporelleRésumé : (auteur) The paper presents a summary of research activities concerning theoretical geodesy performed in Poland in the period of 2011-2014. It contains the results of research on new methods of the parameter estimation, a study on robustness properties of the M-estimation, control network and deformation analysis, and geodetic time series analysis. The main achievements in the geodetic parameter estimation involve a new model of the M-estimation with probabilistic models of geodetic observations, a new Shift-Msplit estimation, which allows to estimate a vector of parameter differences and the Shift-Msplit(+) that is a generalisation of Shift-Msplit estimation if the design matrix A of a functional model has not a full column rank. The new algorithms of the coordinates conversion between the Cartesian and geodetic coordinates, both on the rotational and triaxial ellipsoid can be mentioned as a highlights of the research of the last four years. New parameter estimation models developed have been adopted and successfully applied to the control network and deformation analysis.
New algorithms based on the wavelet, Fourier and Hilbert transforms were applied to find time-frequency characteristics of geodetic and geophysical time series as well as time-frequency relations between them. Statistical properties of these time series are also presented using different statistical tests as well as 2nd, 3rd and 4th moments about the mean. The new forecasts methods are presented which enable prediction of the considered time series in different frequency bands.Numéro de notice : A2015--019 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1515/geocart-2015-0015 En ligne : http://dx.doi.org/10.1515/geocart-2015-0015 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80815
in Geodesy and cartography > vol 64 n° 2 (December 2015) . - pp 261 - 279[article]Accurate attribute mapping from volunteered geographic information: issues of volunteer quantity and quality / Giles M. Foody in Cartographic journal (the), Vol 52 n° 4 (November 2015)
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Titre : Accurate attribute mapping from volunteered geographic information: issues of volunteer quantity and quality Type de document : Article/Communication Auteurs : Giles M. Foody, Auteur ; Linda M. See, Auteur ; Steffen Fritz, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 336 - 344 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] acquisition de données
[Termes IGN] analyse des besoins
[Termes IGN] caractérisation
[Termes IGN] données localisées des bénévoles
[Termes IGN] localisant
[Termes IGN] producteur
[Termes IGN] qualité des donnéesRésumé : (Auteur) Crowdsourcing is a popular means of acquiring data, but the use of such data is limited by concerns with its quality. This is evident within cartography and geographical sciences more generally, with the quality of volunteered geographic information (VGI) recognized as a major challenge to address if the full potential of citizen sensing in mapping applications is to be realized. Here, a means to characterize the quality of volunteers, based only on the data they contribute, was used to explore issues connected with the quantity and quality of volunteers for attribute mapping. The focus was on data in the form of annotations or class labels provided by volunteers who visually interpreted an attribute, land cover, from a series of satellite sensor images. A latent class model was found to be able to provide accurate characterisations of the quality of volunteers in terms of the accuracy of their labelling, irrespective of the number of cases that they labelled. The accuracy with which a volunteer could be characterized tended to increase with the number of volunteers contributing but was typically good at all but small numbers of volunteers. Moreover, the ability to characterize volunteers in terms of the quality of their labelling could be used constructively. For example, volunteers could be ranked in terms of quality which could then be used to select a sub-set as input to a subsequent mapping task. This was particularly important as an identified subset of volunteers could undertake a task more accurately than when part of a larger group of volunteers. The results highlight that both the quantity and quality of volunteers need consideration and that the use of VGI may be enhanced through information on the quality of the volunteers derived entirely from the data provided without any additional information. Numéro de notice : A2015-933 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00087041.2015.1108658 En ligne : http://dx.doi.org/10.1080/00087041.2015.1108658 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79794
in Cartographic journal (the) > Vol 52 n° 4 (November 2015) . - pp 336 - 344[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 030-2015041 RAB Revue Centre de documentation En réserve L003 Disponible Geometric integration of high-resolution satellite imagery and airborne LiDAR data for improved geopositioning accuracy in metropolitan areas / Bo Wu in ISPRS Journal of photogrammetry and remote sensing, vol 109 (November 2015)
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Titre : Geometric integration of high-resolution satellite imagery and airborne LiDAR data for improved geopositioning accuracy in metropolitan areas Type de document : Article/Communication Auteurs : Bo Wu, Auteur ; Shengjun Tang, Auteur ; Qing Zhu, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 139 - 151 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] données lidar
[Termes IGN] géométrie de l'image
[Termes IGN] Hong-Kong
[Termes IGN] image à très haute résolution
[Termes IGN] image Pléiades
[Termes IGN] image ZiYuan-3
[Termes IGN] intégration de données
[Termes IGN] milieu urbain
[Termes IGN] précision du positionnementRésumé : (auteur) High-resolution satellite imagery (HRSI) and airborne light detection and ranging (LiDAR) data are widely used for deriving 3D spatial information. However, the 3D spatial information derived from them in the same area can be inconsistent. Considering HRSI and LiDAR datasets taken from metropolitan areas as a case study, this paper presents a novel approach to the geometric integration of HRSI and LiDAR data to reduce their inconsistencies and improve their geopositioning accuracy. First, the influences of HRSI’s individual rational polynomial coefficients (RPCs) on geopositioning accuracies are analyzed and the RPCs that dominate those accuracies are identified. The RPCs are then used as inputs in the geometric integration model together with the tie points identified in stereo images and LiDAR ground points. A local vertical constraint and a local horizontal constraint are also incorporated in the model to ensure vertical and horizontal consistency between the two datasets. The model improves the dominating RPCs and the ground coordinates of the LiDAR points, decreasing the inconsistencies between the two datasets and improving their geopositioning accuracy. Experiments were conducted using ZY-3 and Pleiades-1 imagery and the corresponding airborne LiDAR data in Hong Kong. The results verify that the geometric integration model effectively improves the geopositioning accuracies of both types of imagery and the LiDAR points. Furthermore, the model enables the full comparative and synergistic use of remote sensing imagery and laser scanning data collected from different platforms and sensors. Numéro de notice : A2015-861 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2015.09.006 En ligne : https://doi.org/10.1016/j.isprsjprs.2015.09.006 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79242
in ISPRS Journal of photogrammetry and remote sensing > vol 109 (November 2015) . - pp 139 - 151[article]La néo-géographie sous l'oeil des chercheurs / Françoise de Blomac in DécryptaGéo le mag, n° 171 (novembre 2015)
PermalinkApplying ASPRS accuracy standards to surveys from small unmanned aircraft systems (UAS) / Ken Whitehead in Photogrammetric Engineering & Remote Sensing, PERS, vol 81 n° 10 (October 2015)
PermalinkA concentration-based approach to data classification for choropleth mapping / Robert G. Cromley in International journal of geographical information science IJGIS, vol 29 n° 10 (October 2015)
PermalinkDefining a framework for integration of geospatial technologies for emergency management / V. Bhanumurthy in Geocarto international, vol 30 n° 9 - 10 (October - November 2015)
PermalinkExtraction des zones cohérentes par l’analyse spatio-temporelle d’images de télédétection / Thomas Guyet in Revue internationale de géomatique, vol 25 n° 4 (octobre - décembre 2015)
PermalinkIntegrating space, time, version, and scale using Alexandrov topologies / Norbert Paul in International journal of 3-D information modeling, vol 4 n° 4 (October - December 2015)
PermalinkLinear models for airborne-laser-scanning-based operational forest inventory with small field sample size and highly correlated LiDAR data / Virpi Junttila in IEEE Transactions on geoscience and remote sensing, vol 53 n° 10 (October 2015)
PermalinkOpenEventMap: A volunteered location-based service / Katereh Polous in Cartographica, vol 50 n° 4 (Winter 2015)
PermalinkPrecision comparison and analysis of four online free PPP services in static positioning and tropospheric delay estimation / Qiuying Guo in GPS solutions, vol 19 n° 4 (october 2015)
PermalinkState Land Service: Pillar under Latvia's E-government / Frédérique Coumans in GIM international, vol 29 n° 10 (October 2015)
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