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données localiséesSynonyme(s)spatial data ;données géospatiales ;données géographiques données à référence spatialeVoir aussi |
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Linking time geography and activity theory to support the activities of mobile information seekers / Paul Crease in Transactions in GIS, vol 17 n° 4 (August 2013)
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Titre : Linking time geography and activity theory to support the activities of mobile information seekers Type de document : Article/Communication Auteurs : Paul Crease, Auteur ; Tumasch Reischenbacher, Auteur Année de publication : 2013 Article en page(s) : pp 507 - 525 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] analyse spatio-temporelle
[Termes IGN] calcul d'itinéraire
[Termes IGN] données spatiotemporelles
[Termes IGN] itinéraire
[Termes IGN] recherche d'information géographique
[Termes IGN] SIG nomade
[Termes IGN] Time-geographyRésumé : (Auteur) Mobile geographic information seeking systems are often employed to support spatial activities in an unfamiliar geographic environment. However, current systems are unable to incorporate the spatio-temporal constraints of these activities in order to support this information seeking. This article describes a methodology addressing the nature of these spatio-temporal activities that has the potential to contribute solutions to this problem. A key element of this approach is the awareness that both the planning and acting phases must be considered in supporting such activities. This means the development of plans that can be amended ad-hoc, whilst still adhering to the spatio-temporal constraints of the activity. The results of such an approach are the ability for a more descriptive representation of a spatio-temporal activity, which can then be used to support spatio-temporal accessibility analyses and disclose geographic information objects that are no longer accessible to the mobile information seeker. The introduction of these spatio-temporal constraints also allows the mobile information seeker to build up an itinerary that adheres to the given spatio-temporal constraints of the activity. Numéro de notice : A2013-469 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12044 Date de publication en ligne : 02/08/2013 En ligne : https://doi.org/10.1111/tgis.12044 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32607
in Transactions in GIS > vol 17 n° 4 (August 2013) . - pp 507 - 525[article]A methodology to characterize vertical accuracies in lidar-derived products at landscape scales / Wade T. Tinkham in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 8 (August 2013)
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Titre : A methodology to characterize vertical accuracies in lidar-derived products at landscape scales Type de document : Article/Communication Auteurs : Wade T. Tinkham, Auteur ; Chad .m Hoffman, Auteur ; Michael J. Falkowski, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 709 - 716 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] classification par forêts d'arbres décisionnels
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] modèle numérique de surface
[Termes IGN] paysage
[Termes IGN] précision altimétriqueRésumé : (Auteur) Light detection and ranging (lidar) is the premier technology for high-resolution elevation measurements in complex landscapes. Lidar error assessments allow for objective interpretation of Digital Elevation Models (DEMs) and products reliant on these layers. The purpose of this study is to spatially estimate the vertical error of a lidar-derived DEM across seven cover types through modeling of field survey data. We use thirty-four variables and ground-based field survey data in a Random Forest regression to predict elevation error. Four variables captured the variability within the lidar errors, with three variables relevant to the distribution of returns within the vegetation and one relating to the terrain form. Good agreement was observed when comparing the survey against the model predictions (u = -0.02 m, s = 0.13 m, and RMSE = 0.14 m). With most lidar products reliant upon accurate production of DEMs, providing spatially explicit assessments of uncertainty at the landscape level will increase user confidence in lidar products. Numéro de notice : A2013-425 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.79.8.709 En ligne : https://doi.org/10.14358/PERS.79.8.709 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32563
in Photogrammetric Engineering & Remote Sensing, PERS > vol 79 n° 8 (August 2013) . - pp 709 - 716[article]Modelling the impacts of civil war on land use and land cover change within Kono District, Sierra Leone: a socio-geospatial approach / Sigismond A. Wilson in Geocarto international, vol 28 n° 5-6 (August - October 2013)
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Titre : Modelling the impacts of civil war on land use and land cover change within Kono District, Sierra Leone: a socio-geospatial approach Type de document : Article/Communication Auteurs : Sigismond A. Wilson, Auteur ; Cyril O. Wilson, Auteur Année de publication : 2013 Article en page(s) : pp 476 - 501 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse spatio-temporelle
[Termes IGN] carte d'occupation du sol
[Termes IGN] détection de changement
[Termes IGN] dommage matériel
[Termes IGN] données localisées
[Termes IGN] données socio-économiques
[Termes IGN] guerre
[Termes IGN] image Landsat
[Termes IGN] image Landsat-TM
[Termes IGN] occupation du sol
[Termes IGN] Sierra Leone
[Termes IGN] utilisation du solRésumé : (Auteur) Capturing the scope and trajectory of changes in land use and land cover (LULC) is critical to urban and regional planning, natural resource sustainability and the overall information needs of policy makers. Studies on LULC change are generally conducted within peaceful environments and seldom incorporate areas that are politically volatile. Consequently, the role of civil conflict on LULC change remains elusive. Using a dense time stack of Landsat Thematic Mapper images and a hybrid classification approach, this study analysed LULC changes in Kono District between 1986–1991, 1991–2002 and 2002–2007 with the overarching goal of elucidating deviations from typical changes in LULC caused by Sierra Leone's civil war (1991–2002). Informed by social survey and secondary data, this study engaged the drivers that facilitated LULC changes during war and non-war periods in a series of spatial regression models in exploring the interface between civil conflict and LULC change. Numéro de notice : A2013-549 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2012.724456 Date de publication en ligne : 25/09/2012 En ligne : https://doi.org/10.1080/10106049.2012.724456 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78072
in Geocarto international > vol 28 n° 5-6 (August - October 2013) . - pp 476 - 501[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 059-2013031 RAB Revue Centre de documentation En réserve L003 Disponible A multiresolution hierarchical classification algorithm for filtering airborne LiDAR data / Chuanfa Chen in ISPRS Journal of photogrammetry and remote sensing, vol 82 (August 2013)
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Titre : A multiresolution hierarchical classification algorithm for filtering airborne LiDAR data Type de document : Article/Communication Auteurs : Chuanfa Chen, Auteur Année de publication : 2013 Article en page(s) : pp 1 - 9 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] analyse multirésolution
[Termes IGN] classification ascendante hiérarchique
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] filtrage de points
[Termes IGN] interpolation
[Termes IGN] Kappa de Cohen
[Termes IGN] semis de points
[Termes IGN] seuillage de pointsRésumé : (Auteur) We presented a multiresolution hierarchical classification (MHC) algorithm for differentiating ground from non-ground LiDAR point cloud based on point residuals from the interpolated raster surface. MHC includes three levels of hierarchy, with the simultaneous increase of cell resolution and residual threshold from the low to the high level of the hierarchy. At each level, the surface is iteratively interpolated towards the ground using thin plate spline (TPS) until no ground points are classified, and the classified ground points are used to update the surface in the next iteration. 15 groups of benchmark dataset, provided by the International Society for Photogrammetry and Remote Sensing (ISPRS) commission, were used to compare the performance of MHC with those of the 17 other publicized filtering methods. Results indicated that MHC with the average total error and average Cohen’s kappa coefficient of 4.11% and 86.27% performs better than all other filtering methods. Numéro de notice : A2013-407 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2013.05.001 En ligne : https://doi.org/10.1016/j.isprsjprs.2013.05.001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32545
in ISPRS Journal of photogrammetry and remote sensing > vol 82 (August 2013) . - pp 1 - 9[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2013081 RAB Revue Centre de documentation En réserve L003 Disponible Registration of aerial imagery and lidar data in desert areas using the centroids of bushes as control information / Na Li in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 8 (August 2013)
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Titre : Registration of aerial imagery and lidar data in desert areas using the centroids of bushes as control information Type de document : Article/Communication Auteurs : Na Li, Auteur ; Xianfeng Huang, Auteur ; Fan Zhang, Auteur ; Le Wang, Auteur Année de publication : 2013 Article en page(s) : pp 743 - 752 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] appariement de données localisées
[Termes IGN] brousse
[Termes IGN] centroïde
[Termes IGN] désert
[Termes IGN] données lidar
[Termes IGN] Gobi, désert du
[Termes IGN] image aérienne
[Termes IGN] Ransac (algorithme)
[Termes IGN] semis de pointsRésumé : (Auteur) Geometric registration of multiple-source data is of great value for fusion processing and is very beneficial for the research of desert ecosystems. A lidar point cloud and optical image are two typical data that need to be integrated for data assimilation and information retrieval. This paper aims to solve the registration problem of aerial imagery and airborne lidar data in desert areas where traditional registration methods have difficulties in identifying registration primitives. In many deserts, such as the Sahara in Africa and Gobi in China, we observe that there are unevenly distributed desert bushes, which can be used as cues for registration. In this paper, we propose a registration approach using the centroids of bushes as registration primitives. This approach employs similar triangles created from both centroids as the evidence for matching and verifies the registration by the RANSAC algorithm. Experiments using data taken from the Dunhuang Gobi Desert in China show the registration surface model visually, and at the same time quantifies the deviation error, which corroborates that the proposed registration method is effective and feasible in desert areas. Numéro de notice : A2013-427 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.79.8.731 En ligne : https://doi.org/10.14358/PERS.79.8.731 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32565
in Photogrammetric Engineering & Remote Sensing, PERS > vol 79 n° 8 (August 2013) . - pp 743 - 752[article]Registration of optical images with lidar data and its accuracy assessment / Shunyl Zheng in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 8 (August 2013)
PermalinkThe influence of digital surface model choice on visibility-based mobile geospatial applications / Sam Meek in Transactions in GIS, vol 17 n° 4 (August 2013)
PermalinkTowards 4D cartography - four-dimensional dynamic maps for understanding spatio-temporal correlations in lightning events / Bernd Resch in Cartographic journal (the), vol 50 n° 3 (August 2013)
PermalinkZ-axis based visualization of map elements - cartographic experiences with 3D monitors using lenticular foil technology / Kai Bröhmer in Cartographic journal (the), vol 50 n° 3 (August 2013)
PermalinkAdjustment of geodetic measurements with mixed multiplicative and additive random errors / Peilang Xu in Journal of geodesy, vol 87 n° 7 (July 2013)
PermalinkAfficher des données IGN en 3D sous iPhone/iPad [1] / Anonyme in Géomatique expert, n° 93 (01/07/2013)
PermalinkAssessing lidar accuracy with hexagonal retro-reflective targets / Roberto Canavosio-Zuzelski in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 7 (July 2013)
PermalinkDevelopment of a 3-D urbanization index using digital terrain models for surface urban heat island effects / Chih-Da Wu in ISPRS Journal of photogrammetry and remote sensing, vol 81 (July 2013)
PermalinkFiltering airborne LiDAR data by embedding smoothness-constrained segmentation in progressive TIN densification / Jixian Zhang in ISPRS Journal of photogrammetry and remote sensing, vol 81 (July 2013)
PermalinkForest canopy height estimation using ICESat/GLAS data and error factor analysis in Hokkaido, Japan / Masato Hayashi in ISPRS Journal of photogrammetry and remote sensing, vol 81 (July 2013)
PermalinkModel buildings / Carole Ankers in GEO: Geoconnexion international, vol 12 n° 7 (july - august 2013)
PermalinkA shape-based segmentation method for mobile laser scanning point clouds / Yang Bisheng in ISPRS Journal of photogrammetry and remote sensing, vol 81 (July 2013)
PermalinkAn automated approach for the conflation of vector parcel map with imagery / Wenbo Song in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 6 (June 2013)
PermalinkAn object-based system for Lidar data fusion and feature extraction / Jarlath P. M. O'Neil-Dunne in Geocarto international, vol 28 n° 3-4 (June - July 2013)
PermalinkAssessing the positional accuracy of airborne laser scanning in urban areas / Joachim Hölhe in Photogrammetric record, vol 28 n° 142 (June - August 2013)
PermalinkChallenges and lessons from a wetland LiDAR project: a case study of the Okefenokee Swamp, Georgia, USA / L. Shea Rose in Geocarto international, vol 28 n° 3-4 (June - July 2013)
PermalinkPermalinkCombined bundle block adjustment with spaceborne linear array and airborne frame array imagery / Yongjun Zhang in Photogrammetric record, vol 28 n° 142 (June - August 2013)
PermalinkDerivation of tree skeletons and error assessment using LiDAR point cloud data of varying quality / Magnus Bremer in ISPRS Journal of photogrammetry and remote sensing, vol 80 (June 2013)
PermalinkDetecting level-of-detail inconsistencies in volunteered geographic information data sets / Guillaume Touya in Cartographica, vol 48 n° 2 (June 2013)
PermalinkDiscovering spatial interaction communities from mobile phone data / Song Gao in Transactions in GIS, vol 17 n° 3 (June 2013)
PermalinkEstimation of transformation parameters between centre-line vector road maps and high resolution satellite images / Lu Luping in Photogrammetric record, vol 28 n° 142 (June - August 2013)
PermalinkInnovations technologiques topographiques et la détection de réseaux / Lobna Rekik in XYZ, n° 135 (juin - août 2013)
PermalinkRéflectométrie GNSS : modélisation des trajets des signaux réfléchis à la surface de la mer / Nicolas Roussel in XYZ, n° 135 (juin - août 2013)
PermalinkPermalinkThinking outside the disciplinary box in coping with dilemmas in geoinformation management for public policy / W.H. ERIK DE Man in Transactions in GIS, vol 17 n° 3 (June 2013)
PermalinkUsing reverse viewshed analysis to assess the location correctness of visually generated VGI / Hansi Senaratne in Transactions in GIS, vol 17 n° 3 (June 2013)
PermalinkVers une approche pluridisciplinaire des réseaux enterrés / Lucile Gimenez in XYZ, n° 135 (juin - août 2013)
PermalinkVille numérique et maquettes 3D (Bulletin de Le moniteur des travaux publics et du bâtiment) / Philippe Thébaud
PermalinkChange detection and deformation analysis in point clouds: Application to rock face monitoring / Marco Scaioni in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 5 (May 2013)
PermalinkA generative statistical approach to automatic 3D building roof reconstruction from laser scanning data / Hai Huang in ISPRS Journal of photogrammetry and remote sensing, vol 79 (May 2013)
PermalinkPermalinkGeometric calibration of a terrestrial laser scanner with local additional parameters: An automatic strategy / D. Garcia-San-Miguel in ISPRS Journal of photogrammetry and remote sensing, vol 79 (May 2013)
PermalinkPermalinkInfluence of a dense, low-height shrub species on the accuracy of a lidar-derived DEM / Samuel B. Gould in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 5 (May 2013)
PermalinkA laser scanning-based method for fast estimation of seismic-induced building deformations / Arianna Pesci in ISPRS Journal of photogrammetry and remote sensing, vol 79 (May 2013)
PermalinkPermalinkSemi-automated extraction and delineation of 3D roads of street scene from mobile laser scanning point clouds / Bishen Yang in ISPRS Journal of photogrammetry and remote sensing, vol 79 (May 2013)
PermalinkSingle tree detection from airborne laser scanning data using a marked point process based method / Junjie Zhang in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol II-3 W1 (May 2013)
PermalinkSpatio-temporal image pattern prediction method based on a physical model with time-varying optical flow / Hidetomo Sakaino in IEEE Transactions on geoscience and remote sensing, vol 51 n° 5 Tome 2 (May 2013)
PermalinkTowards 3D lidar point cloud registration improvement using optimal neighborhood knowledge / Adrien Gressin in ISPRS Journal of photogrammetry and remote sensing, vol 79 (May 2013)
PermalinkAssessing reference dataset representativeness through confidence metrics based on information density / Giorgos Mountrakis in ISPRS Journal of photogrammetry and remote sensing, vol 78 (April 2013)
PermalinkCatching data in the cobweb: an EU-wide project has just been set up to make it easier for citizens to collect environmental data for use in research, decision-making and creating public policy / Jamie Williams in GEO: Geoconnexion international, vol 12 n° 4 (april 2013)
PermalinkEvolutionary search for understanding movement dynamics on mixed networks / William M. Spears in Geoinformatica, vol 17 n° 2 (April 2013)
PermalinkGeo-social model: A conceptual framework for real-time geocollaboration / Zheng Chang in Transactions in GIS, vol 17 n° 2 (April 2013)
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