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Position validation in crowdsourced accessibility mapping / Rebecca M. Rice in Cartographica, vol 51 n° 2 (Summer 2016)
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Titre : Position validation in crowdsourced accessibility mapping Type de document : Article/Communication Auteurs : Rebecca M. Rice, Auteur ; Ahmad O. Aburizaiza, Auteur ; Matthew T. Rice, Auteur ; Han Qin, Auteur Année de publication : 2016 Article en page(s) : pp 55 - 66 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] accessibilité
[Termes IGN] carte thématique
[Termes IGN] cohérence des données
[Termes IGN] données localisées des bénévoles
[Termes IGN] géobalise
[Termes IGN] handicap
[Termes IGN] mesure de la qualité
[Termes IGN] mise à jour
[Termes IGN] personne non-voyante
[Termes IGN] précision de localisation
[Termes IGN] qualité des données
[Termes IGN] validation des donnéesRésumé : (Auteur) We live in a society in which instant gratification is expected: we demand constantly up-to-date information, which is reflected in our reliance on maps for navigation. Volunteered geographical information (VGI) and geocrowdsourcing make this demand attainable, with popular examples being Waze and OpenStreetMap, where maps are updated quickly by citizen contributors with current base data and features. At George Mason University (in Fairfax, Virginia), the Office of Disability Services releases a traditional paper accessibility map once annually. Owing to its production methods and format, this accessibility map does not capture the transient obstacles that occur frequently throughout campus, rendering it less useful to disabled pedestrians. To fix this dilemma and establish a more useful accessibility system, we have created an application in which contributors report transient obstacles that may impede pedestrian navigation, including sidewalk obstructions, construction detours, and other obstacles that may affect pathway walkability. One of the concerns associated with VGI and geocrowdsourced information is quality assurance, which is imperative when the usage scenarios (including blind, visually impaired, and mobility-impaired navigation) depend on positional accuracy. This study attempts to address the concerns related to the quality assurance of VGI, specifically quality assessment of the positional accuracy of the geocrowdsourced spatial data. We present our quality assessment techniques and novel methods for assessing the consistency of positional characteristics of geocrowdsourced spatial data related to accessibility. These methods rely on moderated positional assessments, geotags extracted from contributed images, and gazetteer-based geoparsing of location descriptions. Finally, we base our methods and approaches on research contributions and best practices from past and current efforts in accessibility mapping. Numéro de notice : A2016-479 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.3138/cart.51.2.3143 En ligne : http://dx.doi.org/10.3138/cart.51.2.3143 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81493
in Cartographica > vol 51 n° 2 (Summer 2016) . - pp 55 - 66[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 031-2016021 RAB Revue Centre de documentation En réserve L003 Disponible Qualitative spatial logics for buffered geometries / Heshan Du in Journal of Artificial Intelligence Research, vol 56 (May - August 2016)
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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]
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Titre : Questions de mesures Type de document : Article/Communication Auteurs : Françoise de Blomac, Auteur Année de publication : 2016 Article en page(s) : pp 10 - 11 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Information géographique
[Termes IGN] étude d'impact
[Termes IGN] infrastructure européenne de données localisées
[Termes IGN] infrastructure nationale des données localiséesRésumé : (auteur) Les grandes études internationales ne semblent pas transposables au cas français et sont encore loin de cerner tous les impacts de l'information géographique. Car aucune méthode n'est aujourd'hui pleinement satisfaite. Numéro de notice : A2016-364 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81098
in DécryptaGéo le mag > n° 178 (juin 2016) . - pp 10 - 11[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 286-2016061 RAB Revue Centre de documentation En réserve L003 Disponible Spatial discovery and the research library / Sara Lafia in Transactions in GIS, vol 20 n° 3 (June 2016)
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Titre : Spatial discovery and the research library Type de document : Article/Communication Auteurs : Sara Lafia, Auteur ; Jon Jablonski, Auteur ; Werner Kuhn, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 399 – 412 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] accès aux données localisées
[Termes IGN] bibliothèque numérique
[Termes IGN] découverte de connaissances
[Termes IGN] données ouvertes
[Termes IGN] métadonnées géographiques
[Termes IGN] plateforme logicielle
[Termes IGN] publication
[Termes IGN] recherche scientifique
[Termes IGN] système d'information géographique
[Termes IGN] web des donnéesRésumé : (auteur) Academic libraries have always supported research across disciplines by integrating access to diverse contents and resources. They now have the opportunity to reinvent their role in facilitating interdisciplinary work by offering researchers new ways of sharing, curating, discovering, and linking research data. Spatial data and metadata support this process because location often integrates disciplinary perspectives, enabling researchers to make their own research data more discoverable, to discover data of other researchers, and to integrate data from multiple sources. The Center for Spatial Studies at the University of California, Santa Barbara (UCSB) and the UCSB Library are undertaking joint research to better enable the discovery of research data and publications. The research addresses the question of how to spatially enable data discovery in a setting that allows for mapping and analysis in a GIS while connecting the data to publications about them. It suggests a framework for an integrated data discovery mechanism and shows how publications may be linked to associated data sets exposed either directly or through metadata on Esri's Open Data platform. The results demonstrate a simple form of linking data to publications through spatially referenced metadata and persistent identifiers. This linking adds value to research products and increases their discoverability across disciplinary boundaries. Numéro de notice : A2016-461 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12235 En ligne : http://dx.doi.org/10.1111/tgis.12235 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81391
in Transactions in GIS > vol 20 n° 3 (June 2016) . - pp 399 – 412[article]The variants of an LOD of a 3D building model and their influence on spatial analyses / Filip Biljecki in ISPRS Journal of photogrammetry and remote sensing, vol 116 (June 2016)
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Titre : The variants of an LOD of a 3D building model and their influence on spatial analyses Type de document : Article/Communication Auteurs : Filip Biljecki, Auteur ; Hugo Ledoux, Auteur ; Jantien E. Stoter, Auteur ; M. George Vosselman, Auteur Année de publication : 2016 Article en page(s) : pp 42 – 54 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] analyse spatiale
[Termes IGN] CityGML
[Termes IGN] cohérence géométrique
[Termes IGN] méthode de Monte-Carlo
[Termes IGN] niveau de détail
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] SIG 3DRésumé : (auteur) The level of detail (LOD) of a 3D city model indicates the model’s grade and usability. However, there exist multiple valid variants of each LOD. As a consequence, the LOD concept is inconclusive as an instruction for the acquisition of 3D city models. For instance, the top surface of an LOD1 block model may be modelled at the eaves of a building or at its ridge height. Such variants, which we term geometric references, are often overlooked and are usually not documented in the metadata. Furthermore, the influence of a particular geometric reference on the performance of a spatial analysis is not known.
In response to this research gap, we investigate a variety of LOD1 and LOD2 geometric references that are commonly employed, and perform numerical experiments to investigate their relative difference when used as input for different spatial analyses. We consider three use cases (estimation of the area of the building envelope, building volume, and shadows cast by buildings), and compute the deviations in a Monte Carlo simulation.
The experiments, carried out with procedurally generated models, indicate that two 3D models representing the same building at the same LOD, but modelled according to different geometric references, may yield substantially different results when used in a spatial analysis. The outcome of our experiments also suggests that the geometric reference may have a bigger influence than the LOD, since an LOD1 with a specific geometric reference may yield a more accurate result than when using LOD2 models.Numéro de notice : A2016-577 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2016.03.003 En ligne : https://doi.org/10.1016/j.isprsjprs.2016.03.003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81709
in ISPRS Journal of photogrammetry and remote sensing > vol 116 (June 2016) . - pp 42 – 54[article]ATLAS: A three-layered approach to facade parsing / Markus Mathias in International journal of computer vision, vol 118 n° 1 (May 2016)
PermalinkDeveloping the information infrastructure based on LADM – the case of Poland / K. J. Góźdź in Survey review, vol 48 n° 348 (May 2016)
PermalinkRethinking big data: A review on the data quality and usage issues / Jianzheng Liu in ISPRS Journal of photogrammetry and remote sensing, vol 115 (May 2016)
PermalinkA webgis framework for disseminating processed remotely sensed on land cover transformations / Grazia Caradonna in Reports on geodesy and geoinformatics, vol 100 (May 2016)
PermalinkAssessing resistance to volunteered geographic information reporting within local government / Muning W. Brandeis in Transactions in GIS, vol 20 n° 2 (April 2016)
PermalinkEvaluation and monitoring of service quality: discussing ways to meet INSPIRE requirements / Christian Selp in Transactions in GIS, vol 20 n° 2 (April 2016)
PermalinkIntegrating geo web services for a user driven exploratory analysis / Simon Moncrieff in ISPRS Journal of photogrammetry and remote sensing, vol 114 (April 2016)
PermalinkIntegration of location information and statistical data : developing the Namibian national spatial data infrastructure / Alex Mudabeti in GIM international, vol 30 n° 4 (April 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)
PermalinkAn average error-ellipsoid model for evaluating TLS point-cloud accuracy / Xijiang Chen in Photogrammetric record, vol 31 n° 153 (March - May 2016)
PermalinkApproximating prediction uncertainty for random forest regression models / John W. Coulston in Photogrammetric Engineering & Remote Sensing, PERS, vol 82 n° 3 (March 2016)
PermalinkClassified and clustered data constellation: An efficient approach of 3D urban data management / Suhaibah Azri in ISPRS Journal of photogrammetry and remote sensing, vol 113 (March 2016)
PermalinkCohérence logique dans les systèmes OLAP spatiaux : un état de l’art / Sandro Bimonte in Revue internationale de géomatique, vol 26 n° 1 (janvier - mars 2016)
Permalinkvol 30 n° 3-4 - March - April 2016 - Cyberinfrastructure, Gis and spatial optimization (Bulletin de International journal of geographical information science IJGIS)
PermalinkData fusion technique using wavelet transform and Taguchi methods for automatic landslide detection from airborne laser scanning data and QuickBird satellite imagery / Biswajeet Pradhan in IEEE Transactions on geoscience and remote sensing, vol 54 n° 3 (March 2016)
PermalinkEnergy planning tools and CityGML-based 3D virtual city models: experiences from Trento (Italy) / Giorgio Agugiaro in Applied geomatics, vol 8 n° 1 (March 2016)
PermalinkModèle de radiation et modèle gravitaire : du formalisme à l’usage / Hadrien Commenges in Revue internationale de géomatique, vol 26 n° 1 (janvier - mars 2016)
PermalinkModellbasierte Transformation von 3D-Gebäudemodellen nach INSPIRE / Klement Aringer in ZFV, Zeitschrift für Geodäsie, Geoinformation und Landmanagement, Vol 141 n° 3 (Mai - Juni 2016)
PermalinkQuantitative quality evaluation of pansharpened imagery: consistency versus synthesis / Frosti Palsson in IEEE Transactions on geoscience and remote sensing, vol 54 n° 3 (March 2016)
PermalinkSpatial accuracy of UAV- derived orthoimagery and topography: Comparing photogrammetric models processed with direct geo-referencing and ground control points / Chris H. Hugenholtz in Geomatica, vol 70 n° 1 (March 2016)
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