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Comparing G-maps with other topological data structures / Patrick Erik Bradley in Geoinformatica, vol 18 n° 3 (July 2014)
[article]
Titre : Comparing G-maps with other topological data structures Type de document : Article/Communication Auteurs : Patrick Erik Bradley, Auteur ; Norbert Paul, Auteur Année de publication : 2014 Article en page(s) : pp 595 - 620 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] information géographique
[Termes IGN] modélisation spatiale
[Termes IGN] stockage de données
[Termes IGN] topologieRésumé : (Auteur) This article compares two approaches to storing spatial information: On the one hand there are topological datatypes where primitives and their connectivity are explicitly stored, on the other hand there is the G-maps-approach storing abstract "darts" and groups acting on these darts such that their orbits implicitly give the elements and topology of the stored space. First these concepts are mutually related from a categorial viewpoint and, second, their storage complexity is compared. Numéro de notice : A2014-502 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s10707-013-0191-1 Date de publication en ligne : 26/10/2013 En ligne : https://doi.org/10.1007/s10707-013-0191-1 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=74094
in Geoinformatica > vol 18 n° 3 (July 2014) . - pp 595 - 620[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 057-2014031 RAB Revue Centre de documentation En réserve L003 Disponible SAR change detection based on intensity and texture changes / Maoguo Gong in ISPRS Journal of photogrammetry and remote sensing, vol 93 (July 2014)
[article]
Titre : SAR change detection based on intensity and texture changes Type de document : Article/Communication Auteurs : Maoguo Gong, Auteur ; Yu Li, Auteur ; Licheng Jiao, Auteur ; et al., Auteur Année de publication : 2014 Article en page(s) : pp. 123 - 135 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] graphe
[Termes IGN] image radar moirée
[Termes IGN] texture d'imageRésumé : (Auteur)In this paper, a novel change detection approach is proposed for multitemporal synthetic aperture radar (SAR) images. The approach is based on two difference images, which are constructed through intensity and texture information, respectively. In the extraction of the texture differences, robust principal component analysis technique is used to separate irrelevant and noisy elements from Gabor responses. Then graph cuts are improved by a novel energy function based on multivariate generalized Gaussian model for more accurately fitting. The effectiveness of the proposed method is proved by the experiment results obtained on several real SAR images data sets. Numéro de notice : A2014-331 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2014.04.010 En ligne : https://doi.org/10.1016/j.isprsjprs.2014.04.010 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73698
in ISPRS Journal of photogrammetry and remote sensing > vol 93 (July 2014) . - pp. 123 - 135[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2014071 RAB Revue Centre de documentation En réserve L003 Disponible Knowledge and reasoning in spatial analysis / Andreas Hall in Transactions in GIS, vol 18 n° 3 (June 2014)
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Titre : Knowledge and reasoning in spatial analysis Type de document : Article/Communication Auteurs : Andreas Hall, Auteur ; Paula Ahonen-Rainio, Auteur ; Kirsi Virrantaus, Auteur Année de publication : 2014 Article en page(s) : pp 464 - 476 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse spatiale
[Termes IGN] analyse visuelle
[Termes IGN] cognition
[Termes IGN] graphe
[Termes IGN] mobilité urbaine
[Termes IGN] processus
[Termes IGN] raisonnement spatialRésumé : (Auteur) Reasoning is an essential part of any analysis process. Especially in visual analytics, the quality of the results depends heavily on the knowledge and reasoning skills of the analyst. In this study, we consider how to make the results transparent by visualizing the reasoning and the knowledge, so that persons from outside can trace and verify them. The focus of this study is in spatial analysis and a case study was carried out on a process of off-road mobility analysis. In the case study, linked views of a map and a PCP were identified as reasoning artifacts. The knowledge used by the analyst was formed by these artifacts and the tangible pieces of information identified in them, along with the mental models of the analyst's mind. To make the results transparent, the tangible pieces of information were marked with sketches and the mental models were presented in causal graphs because it was found that causality was central to the reasoning process in the case study. The causal graph allows the reasoning of the analyst to be studied, as well as traced back to its origin. Numéro de notice : A2014-274 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12049 Date de publication en ligne : 14/08/2013 En ligne : https://doi.org/10.1111/tgis.12049 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33177
in Transactions in GIS > vol 18 n° 3 (June 2014) . - pp 464 - 476[article]A new geospatial overlay method for the analysis and visualization of spatial change patterns using object-oriented data modeling concepts / Dirk Tiede in Cartography and Geographic Information Science, vol 41 n° 3 (June 2014)
[article]
Titre : A new geospatial overlay method for the analysis and visualization of spatial change patterns using object-oriented data modeling concepts Type de document : Article/Communication Auteurs : Dirk Tiede, Auteur Année de publication : 2014 Article en page(s) : pp 227 - 234 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] analyse comparative
[Termes IGN] couche thématique
[Termes IGN] détection d'objet
[Termes IGN] détection de changement
[Termes IGN] programmation adaptée à l'objet
[Termes IGN] système d'information géographique
[Termes IGN] topologieRésumé : (Auteur) Traditional geographic information system (GIS)-overlay routines usually build on relatively simple data models. Topology is – if at all – calculated on the fly for very specific tasks only. If, for example, a change comparison is conducted between two or more polygon layers, the result leads mostly to a complete and also very complex from–to class intersection. A lot of additional processing steps need to be performed to arrive at aggregated and meaningful results. To overcome this problem a new, automated geospatial overlay method in a topologically enabled (multi-scale) framework is presented. The implementation works with polygon and raster layers and uses a multi-scale vector/raster data model developed in the object-based image analysis software eCognition (Trimble Geospatial Imaging, Munich, Germany). Advantages are the use of the software inherent topological relationships in an object-by-object comparison, addressing some of the basic concepts of object-oriented data modeling such as classification, generalization, and aggregation. Results can easily be aggregated to a change-detection layer; change dependencies and the definition of different change classes are interactively possible through the use of a class hierarchy and its inheritance (parent–child class relationships). Implementation is exemplarily shown for a change comparison of CORINE Land Cover data sets. The result is a flexible and transferable solution which is – if parameterized once – fully automated. Numéro de notice : A2014-315 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/15230406.2014.901900 En ligne : https://doi.org/10.1080/15230406.2014.901900 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33218
in Cartography and Geographic Information Science > vol 41 n° 3 (June 2014) . - pp 227 - 234[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 032-2014031 RAB Revue Centre de documentation En réserve L003 Disponible Matching old hydrographic vector data from Cassini's maps / Benoit Costes in e-Perimetron, vol 9 n° 2 ([01/05/2014])
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Titre : Matching old hydrographic vector data from Cassini's maps Type de document : Article/Communication Auteurs : Benoit Costes , Auteur Année de publication : 2014 Article en page(s) : pp 51 - 65 Note générale : bibliographie
Article issu d'une communication présentée au 8th International Workshop on Digital Approaches to Cartographic Heritage, 19-20 September 2013, RomaLangues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] analyse multicritère
[Termes IGN] appariement de réseaux
[Termes IGN] carte de Cassini
[Termes IGN] graphe
[Termes IGN] processus de hiérarchisation analytique
[Termes IGN] réseau hydrographiqueRésumé : (auteur) This article focuses on the process of matching old hydrographic networks extracted from Cassini maps. The inherent specificities of such data make conventional methods for matching networks inefficient. We propose a novel hierarchical approach to match hydrographic networks, by extracting natural structures called strokes. Each stroke is then classified according to its weight in terms of hydrographic structure within the graph. The hierarchical selection of candidates and the use of a multi-criteria decision making process (AHP) constitute a good strategy to match imperfect hydrographic networks. Numéro de notice : A2014-659 Affiliation des auteurs : LASTIG COGIT (2012-2019) Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : sans En ligne : http://www.e-perimetron.org/Vol_9_2/Vol9_2.htm Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78550
in e-Perimetron > vol 9 n° 2 [01/05/2014] . - pp 51 - 65[article]Documents numériques
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