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GeOxygene : ... to host and share advanced GI Science research results [diaporama] / Bénédicte Bucher (08/07/2009)
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Titre : GeOxygene : ... to host and share advanced GI Science research results [diaporama] Type de document : Article/Communication Auteurs : Bénédicte Bucher , Auteur ; Mickaël Brasebin
, Auteur ; Elodie Buard
, Auteur ; Eric Grosso
, Auteur ; Sébastien Mustière
, Auteur
Editeur : [s.l.] : [s.n.] Année de publication : 08/07/2009 Conférence : OGRS 2009, International Opensource Geospatial Research Symposium 08/07/2009 10/07/2009 Nantes France Importance : 17 p. Format : 30 x 21 cm Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] données vectorielles
[Termes IGN] Géoxygène (plateforme de généralisation)Numéro de notice : 10605 Affiliation des auteurs : COGIT (1988-2011) Thématique : GEOMATIQUE Nature : Communication DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64205 Documents numériques
en open access
10605_diaporama_ogrs_2009_geoxygene_bucher.pdfAdobe Acrobat PDFAnt intelligence for solving optimal path-covering problems with multi-objectives / X. Li in International journal of geographical information science IJGIS, vol 23 n° 7-8 (july 2009)
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[article]
Titre : Ant intelligence for solving optimal path-covering problems with multi-objectives Type de document : Article/Communication Auteurs : X. Li, Auteur ; Jianhua He, Auteur ; X. Liu, Auteur Année de publication : 2009 Article en page(s) : pp 839 - 857 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] chemin le plus court, algorithme du
[Termes IGN] données maillées
[Termes IGN] optimisation par colonie de fourmisRésumé : (Auteur) Conventional methods have difficulties in forming optimal paths when raster data are used and multi-objectives are involved. This paper presents a new method of using ant colony optimization (ACO) for solving optimal path-covering problems on unstructured raster surfaces. The novelty of this proposed ACO includes the incorporation of a couple of distinct features which are not present in classical ACO. A new component, the direction function, is used to represent the 'visibility' in the path exploration. This function is to guide an ant walking toward the final destination more efficiently. Moreover, a utility function is proposed to reflect the multi-objectives in planning applications. Experiments have shown that classical ACO cannot be used to solve this type of path optimization problems. The proposed ACO model can generate near optimal solutions by using hypothetical data in which the optimal solutions are known. This model can also find the near optimal solutions for the real data set with a good convergence rate. It can yield much higher utility values compared with other common conventional models. Copyright Taylor & Francis Numéro de notice : A2009-338 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810802570309 En ligne : https://doi.org/10.1080/13658810802570309 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29968
in International journal of geographical information science IJGIS > vol 23 n° 7-8 (july 2009) . - pp 839 - 857[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-09051 RAB Revue Centre de documentation En réserve L003 Disponible 079-09052 RAB Revue Centre de documentation En réserve L003 Disponible A data-mining approach for assessing consistency between multiple representations in spatial databases / David Sheeren in International journal of geographical information science IJGIS, vol 23 n° 7-8 (july 2009)
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[article]
Titre : A data-mining approach for assessing consistency between multiple representations in spatial databases Type de document : Article/Communication Auteurs : David Sheeren , Auteur ; Jean Daniel Zucker, Auteur ; Sébastien Mustière
, Auteur
Année de publication : 2009 Article en page(s) : pp 961 - 992 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] appariement de données localisées
[Termes IGN] apprentissage dirigé
[Termes IGN] base de données localisées
[Termes IGN] cohérence des données
[Termes IGN] découverte de connaissances
[Termes IGN] données vectorielles
[Termes IGN] exploration de données géographiques
[Termes IGN] métadonnées
[Termes IGN] représentation multiple
[Termes IGN] système à base de connaissancesRésumé : (Auteur) When different spatial databases are combined, an important issue is the identification of inconsistencies between data. Quite often, representations of the same geographical entities in databases are different and reflect different points of view. In order to fully take advantage of these differences when object instances are associated, a key issue is to determine whether the differences are normal, i.e. explained by the database specifications, or if they are due to erroneous or outdated data in one database. In this paper, we propose a knowledge-based approach to partially automate the consistency assessment between multiple representations of data. The inconsistency detection is viewed as a knowledge-acquisition problem, the source of knowledge being the data. The consistency assessment is carried out by applying a proposed method called MECO. This method is itself parameterized by some domain knowledge obtained from a second method called MACO. MACO supports two approaches (direct or indirect) to perform the knowledge acquisition using data-mining techniques. In particular, a supervised learning approach is defined to automate the knowledge acquisition so as to drastically reduce the human-domain expert's work. Thanks to this approach, the knowledge-acquisition process is sped up and less expert-dependent. Training examples are obtained automatically upon completion of the spatial data matching. Knowledge extraction from data following this bottom-up approach is particularly useful, since the database specifications are generally complex, difficult to analyse, and manually encoded. Such a data-driven process also sheds some light on the gap between textual specifications and those actually used to produce the data. The methodology is illustrated and experimentally validated by comparing geometrical representations and attribute values of different vector spatial databases. The advantages and limits of such partially automatic approaches are discussed, and some future works are suggested. Copyright Taylor & Francis Numéro de notice : A2009-342 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/13658810701791949 En ligne : http://doi.org/10.1080/13658810701791949 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29972
in International journal of geographical information science IJGIS > vol 23 n° 7-8 (july 2009) . - pp 961 - 992[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-09051 RAB Revue Centre de documentation En réserve L003 Disponible 079-09052 RAB Revue Centre de documentation En réserve L003 Disponible Assessment of sliver polygons in geographical vector data / M. Delafontaine in International journal of geographical information science IJGIS, vol 23 n° 6 (june 2009)
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[article]
Titre : Assessment of sliver polygons in geographical vector data Type de document : Article/Communication Auteurs : M. Delafontaine, Auteur ; G. Nolf, Auteur ; N. Van De Weghe, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : pp 719 - 735 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] couche thématique
[Termes IGN] détection de changement
[Termes IGN] données vectorielles
[Termes IGN] erreur en position
[Termes IGN] occupation du sol
[Termes IGN] polygone
[Termes IGN] précision des données
[Termes IGN] utilisation du solRésumé : (Auteur) As positional error is a major issue in the assessment of spatial data quality, its propagation has been studied widely in map overlaying. However, few studies deal with a manifest consequence of positional error in map overlaying, namely sliver polygons. Sliver polygons are generally treated as awkward by-products that need to be removed quickly. Nevertheless, as they represent spurious areas, their nature and properties carry useful information, for example, for land use/cover assessment. Therefore, next to sliver removal, there is a need for intelligent detection and eventually further analysis of sliver polygons. This article proposes a general, semi-automated method for the assessment of slivers in vector polygon layers. A case study in Flanders (Belgium) illustrates a possible application in area estimation evaluation of land use allocation classes. Copyright Taylor & Francis Numéro de notice : A2009-315 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/13658810701694838 En ligne : https://doi.org/10.1080/13658810701694838 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29945
in International journal of geographical information science IJGIS > vol 23 n° 6 (june 2009) . - pp 719 - 735[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-09041 RAB Revue Centre de documentation En réserve L003 Disponible 079-09042 RAB Revue Centre de documentation En réserve L003 Disponible Automatic and accurate extraction of road intersections from raster maps / Yao-Yi Chiang in Geoinformatica, vol 13 n° 2 (June 2009)
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[article]
Titre : Automatic and accurate extraction of road intersections from raster maps Type de document : Article/Communication Auteurs : Yao-Yi Chiang, Auteur ; C. Shahabi, Auteur ; Craig A. Knoblock, Auteur ; C.C. Chen, Auteur Année de publication : 2009 Article en page(s) : pp 121 - 157 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] carrefour
[Termes IGN] carte numérique
[Termes IGN] conflation
[Termes IGN] connexité (topologie)
[Termes IGN] données maillées
[Termes IGN] extraction automatique
[Termes IGN] extraction du réseau routier
[Termes IGN] intégration de données
[Termes IGN] réseau routierRésumé : (Auteur) Since maps are widely available for many areas around the globe, they provide a valuable resource to help understand other geospatial sources such as to identify roads or to annotate buildings in imagery. To utilize the maps for understanding other geospatial sources, one of the most valuable types of information we need from the map is the road network, because the roads are common features used across different geospatial data sets. Specifically, the set of road intersections of the map provides key information about the road network, which includes the location of the road junctions, the number of roads that meet at the intersections (i.e., connectivity), and the orientations of these roads. The set of road intersections helps to identify roads on imagery by serving as initial seed templates to locate road pixels. Moreover, a conflation system can use the road intersections as reference features (i.e., control point set) to align the map with other geospatial sources, such as aerial imagery or vector data. In this paper, we present a framework for automatically and accurately extracting road intersections from raster maps. Identifying the road intersections is difficult because raster maps typically contain much information such as roads, symbols, characters, or even contour lines. We combine a variety of image processing and graphics recognition methods to automatically separate roads from the raster map and then extract the road intersections. The extracted information includes a set of road intersection positions, the road connectivity, and road orientations. For the problem of road intersection extraction, our approach achieves over 95% precision (correctness) with over 75% recall (completeness) on average on a set of 70 raster maps from a variety of sources. Copyright Springer Numéro de notice : A2009-073 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1007/s10707-008-0046-3 En ligne : https://doi.org/10.1007/s10707-008-0046-3 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29703
in Geoinformatica > vol 13 n° 2 (June 2009) . - pp 121 - 157[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 057-09021 RAB Revue Centre de documentation En réserve L003 Disponible Comparative analysis of SRTM-NED vegetation canopy height to LIDAR-derived vegetation canopy metrics / L. Kenyi in International Journal of Remote Sensing IJRS, vol 30 n°11-12 (June 2009)
PermalinkLa directive INSPIRE ou le chemin vers l'administration électronique géographique / Marc Léobet in XYZ, n° 119 (juin - août 2009)
PermalinkMétadonnées et qualité pour les systèmes de surveillance en temps réel / C. Gutierrez in Revue internationale de géomatique, vol 19 n° 2 (juin - aout 2009)
PermalinkOcclusion-based methodology for the classification of Lidar Data / A.F. Habib in Photogrammetric Engineering & Remote Sensing, PERS, vol 75 n° 6 (June 2009)
PermalinkRelevés laser urbains par systèmes mobiles de cartographie / François Goulette in XYZ, n° 119 (juin - août 2009)
PermalinkA strip adjustment procedure to mitigate the impact of inaccurate mounting parameters in parallel Lidar strips / A.F. Habib in Photogrammetric record, vol 24 n° 126 (June - August 2009)
PermalinkA three-dimensional Douglas-Peucker algorithm and its application to automated generalization of DEMs / Fei Lifan in International journal of geographical information science IJGIS, vol 23 n° 6 (june 2009)
PermalinkPermalinkPermalinkEight times acceleration of geospatial data archiving and distribution on the grids / F. Wang in IEEE Transactions on geoscience and remote sensing, vol 47 n° 5 (May 2009)
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