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OpenStreetMap for cadastral purposes: an application using VGI for official processes in urban areas / S. Basiouka in Survey review, vol 47 n° 344 (September 2015)
[article]
Titre : OpenStreetMap for cadastral purposes: an application using VGI for official processes in urban areas Type de document : Article/Communication Auteurs : S. Basiouka, Auteur ; Chryssy Potsiou, Auteur ; Efthimios Bakogiannis, Auteur Année de publication : 2015 Article en page(s) : pp 333 - 341 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cadastre étranger
[Termes IGN] Athènes
[Termes IGN] données localisées des bénévoles
[Termes IGN] Grèce
[Termes IGN] lever cadastral
[Termes IGN] OpenStreetMap
[Termes IGN] spécification de contenu
[Termes IGN] web mappingRésumé : (auteur) The scope of the paper is to test if the online dynamic maps such as the OpenStreetMap (OSM) can be used for official mapping projects such as Cadastre, to investigate the advantages and the concerns of online and open to the public procedures and to identify those differentiations between experts and amateurs that play a critical role in such official projects. The specific research is focused on the use of OSM in urban areas as an alternative method to the official cadastral surveys. This paper presents the possibilities and the perspectives of OSM for spatial and attribute cadastral data collection and storage for the compilation of draft cadastral maps as an alternative methodology within the terms of the volunteered geographic information (VGI). The authors carried out a practical experiment in an extended part of the historic city centre of Athens and updated the online dynamic map of OSM with attribute and spatial cadastral data. Surveying students explored the capacities of the dynamic map in two steps: (a) in a section where the polygons of the buildings already existed on the map, they had to improve it with attribute data, and (b) in another section where no relevant polygons existed, a spatial and attribute data enhancement was required. The research was based on the various approaches that each student adopted and the freedom that the OSM offers to the users. The results show that users can easily distinguish the differences in capacities between the OSM and the commercial software; the inexpensive, easy to use and quick methodology of the OSM in contrast to the accurate, authoritative and assured methodology of the commercial software. Numéro de notice : A2015-917 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1179/1752270615Y.0000000011 En ligne : https://doi.org/10.1179/1752270615Y.0000000011 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79708
in Survey review > vol 47 n° 344 (September 2015) . - pp 333 - 341[article]Towards the production of digital terrain models from volunteered GPS trajectories / I. Massad in Survey review, vol 47 n° 344 (September 2015)
[article]
Titre : Towards the production of digital terrain models from volunteered GPS trajectories Type de document : Article/Communication Auteurs : I. Massad, Auteur ; Sagi Dalyot, Auteur Année de publication : 2015 Conférence : FIG 2014, Commission 3 Annual Workshop, Geospatial Crowdsourcing and VGI: Establishment of SDI & SIM 04/11/2014 07/11/2014 Bologne Italie Article en page(s) : pp 325 - 332 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] données localisées 2D
[Termes IGN] données localisées des bénévoles
[Termes IGN] modèle numérique de terrain
[Termes IGN] OpenStreetMap
[Termes IGN] positionnement par GPS
[Termes IGN] précision des données
[Termes IGN] production participative
[Termes IGN] qualité des données
[Termes IGN] web mapping
[Termes IGN] WikimapiaRésumé : (auteur) There currently exists a wide variety of online resources providing mapping infrastructures and geographic information. Most web-based map services, such as Google Maps, Yahoo! Maps and Bing Maps, are mostly based on data that is collected by authoritative mapping agencies. Alternatively, some relatively new web-map services, such as OpenStreetMap (OSM) and Wikimapia, are mostly based on volunteered data collected by the public (e.g. crowdsourced mapping). Although such volunteered-based map services platforms show an increasing planimetric (2D) accuracy, completeness and update-rate of their mapping infrastructure, surprisingly enough, there is a lack of comparable data and accuracy measures in respect to the third dimension, i.e. height; more specifically, the topographic representation that is based on the volunteered collected data. Most of these web services still rely on existing open-source authoritative topographic infrastructures, and not on data collected by the volunteers. Moreover, topographic information that is open to the public and is free to use, e.g. advanced spaceborne thermal emission and reflection radiometer and shuttle radar topography mission, is regularly available with relatively low height accuracy (not better than 5 m) and low planimetric resolution (over 30 m). Volunteered data, on the other hand, collected by individuals that are situated ‘all over’ the globe can offer with new capabilities and data characteristics having potentially higher qualities. This research proposes to examine the feasibility of using crowdsourced volunteered geographic information working paradigm for the task of producing a reliable digital terrain model (DTM) infrastructure for general use. This is achieved by collecting GPS observations that are available from VG data sources, while applying a 2D Kalman filter-based algorithm, aimed at reducing noise and ambiguities. This paper presents this methodology, with preliminary analysis results achieved by this implementation, showing the feasibility of this working methodology, having good results and accuracy of the DTM generated. Numéro de notice : A2015-916 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1179/1752270615Y.0000000010 En ligne : https://doi.org/10.1179/1752270615Y.0000000010 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79704
in Survey review > vol 47 n° 344 (September 2015) . - pp 325 - 332[article]Web services for dynamic coloring of UAVSAR images / Jun Wang in Pure and applied geophysics, vol 172 n° 8 (August 2015)
[article]
Titre : Web services for dynamic coloring of UAVSAR images Type de document : Article/Communication Auteurs : Jun Wang, Auteur ; Marlon Pierce, Auteur ; Andrea Donnellan, Auteur ; Jay Parker, Auteur Année de publication : 2015 Article en page(s) : pp 2325 - 2332 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] carte thématique
[Termes IGN] cartographie à la volée
[Termes IGN] couleur à l'écran
[Termes IGN] déformation de la croute terrestre
[Termes IGN] drone
[Termes IGN] image radar moirée
[Termes IGN] interface web
[Termes IGN] polarimétrie radar
[Termes IGN] séisme
[Termes IGN] service web géographiqueRésumé : (auteur) QuakeSim has implemented a service-based Geographic Information System to enable users to access large amounts of Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) data through an online interface. The QuakeSim Interferometric Synthetic Aperture Radar (InSAR) profile tool calculates radar-observed displacement (from an unwrapped interferogram product) along user-specified lines. Pre-rendered thumbnails with InSAR fringe patterns are used to display interferogram and unwrapped phase images on a Google Map in the InSAR profile tool. One challenge with this tool lies in the user visually identifying regions of interest when drawing the profile line. This requires that the user correctly interpret the InSAR imagery, which currently uses fringe patterns. The mapping between pixel color and pixel value is not a one-to-one relationship from the InSAR fringe pattern, and it causes difficulty in understanding general displacement information for QuakeSim users. The goal of this work is to generate color maps that directly reflect the pixel values (displacement) as an addition to the pre-rendered images. Because of an extremely uneven distribution of pixel values on an InSAR image, a histogram-based, nonlinear color template generation algorithm is currently under development. A web service enables on-the-fly coloring of UAVSAR images with dynamically generated color templates. Numéro de notice : A2015-493 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/IMAGERIE Nature : Article DOI : 10.1007/s00024-014-0941-5 Date de publication en ligne : 26/10/2014 En ligne : https://doi.org/10.1007/s00024-014-0941-5 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77288
in Pure and applied geophysics > vol 172 n° 8 (August 2015) . - pp 2325 - 2332[article]Détermination de la précision planimétrique des images Google Earth haute-résolution de Rome (2ème partie) / Guiseppe Pulighe in Géomatique expert, n° 105 (juillet - août 2015)
[article]
Titre : Détermination de la précision planimétrique des images Google Earth haute-résolution de Rome (2ème partie) Type de document : Article/Communication Auteurs : Guiseppe Pulighe, Auteur ; Valerio Baiocchi, Auteur ; Flavio Lupia, Auteur Année de publication : 2015 Article en page(s) : pp 54 - 55 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] Google Earth
[Termes IGN] orthoimage
[Termes IGN] précision du positionnement
[Termes IGN] RomeRésumé : (documentaliste) Cet article propose en conclusion de la première partie de l'article une discussion sur des comparaisons de précision faite à d'autres endroits et selon d'autres méthodes. Numéro de notice : A2015-313 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76547
in Géomatique expert > n° 105 (juillet - août 2015) . - pp 54 - 55[article]Est accompagné deExemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 265-2015041 RAB Revue Centre de documentation En réserve L003 Disponible IFN-001-P001728 PER Revue Nogent-sur-Vernisson Salle périodiques Exclu du prêt Mapping a pollution index for the transboundary Red River Valley, Asia, 2009–2011 / Yongming Xu in Journal of maps, vol 11 n° 3 ([01/07/2015])
[article]
Titre : Mapping a pollution index for the transboundary Red River Valley, Asia, 2009–2011 Type de document : Article/Communication Auteurs : Yongming Xu, Auteur ; Hung Chak Ho, Auteur ; Wencheng Xiong, Auteur Année de publication : 2015 Article en page(s) : pp 396 - 404 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie thématique
[Termes IGN] carte thématique
[Termes IGN] Chine
[Termes IGN] Fleuve rouge
[Termes IGN] Google Earth
[Termes IGN] indicateur
[Termes IGN] polluant
[Termes IGN] Viet NamRésumé : (auteur) A transboundary river is a river that flows through two or more countries. Due to the international policies of the government in each country, it is difficult to investigate the pollution conditions in a transboundary watershed. In this study, pollution sources in the Red River Valley, Southeast Asia were derived from Google Earth by visual interpretation. Based on the derived pollution sources and a simple scoring system, a pollution index map was produced, which provides useful information for intergovernmental cooperation on the water environment in this transboundary watershed. In addition, the method mentioned in this article suggests an efficient and low-cost way to investigate pollution conditions at large scale, which can also be applied to other transboundary watersheds in the future. Numéro de notice : A2015-543 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/17445647.2014.934747 En ligne : https://doi.org/10.1080/17445647.2014.934747 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77514
in Journal of maps > vol 11 n° 3 [01/07/2015] . - pp 396 - 404[article]Who owns paradise? Using web mapping to enhance a geography course exercise about tropical forest conservation / Mikaela J. Weisse in Journal of maps, vol 11 n° 3 ([01/07/2015])PermalinkPermalinkMetadata topic harmonization and semantic search for linked-data-driven geoportals: A case study using ArcGIS online / Yingjie Hu in Transactions in GIS, vol 19 n° 3 (June 2015)PermalinkDétermination de la précision planimétrique des images Google Earth haute résolution de Rome (1ère partie) / Guiseppe Pulighe in Géomatique expert, n° 104 (mai - juin 2015)PermalinkMutualiser des données spatiales et des traitements en environnement : principes, exemples et perspectives / Jean-Christophe Desconnets in Ingénierie des systèmes d'information, ISI : Revue des sciences et technologies de l'information, RSTI, vol 20 n° 3 (mai - juin 2015)PermalinkAn efficient parallel map visualization framework for large vector data / Mingqiang Guo in Geomatica, vol 69 n° 1 (March 2015)PermalinkForming a global monitoring mechanism and a spatiotemporal performance model for geospatial services / Jizhe Xia in International journal of geographical information science IJGIS, vol 29 n° 3 (March 2015)PermalinkL'IGN : l'information grandeur nature auprès des acteurs territoriaux / Bernard Bèzes in Etudes foncières, n° 166 (janvier - mars 2015)PermalinkPermalinkA comparative analysis of routes generated by Web Mapping APIs / Monsak Socharoentum in Cartography and Geographic Information Science, Vol 42 n° 1 (January 2015)Permalink