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Responding to the consequences of uncertainty in geographical data / A. Agumya in International journal of geographical information science IJGIS, vol 16 n° 5 (july 2002)
[article]
Titre : Responding to the consequences of uncertainty in geographical data Type de document : Article/Communication Auteurs : A. Agumya, Auteur ; Gary J. Hunter, Auteur Année de publication : 2002 Article en page(s) : pp 405 - 417 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Information géographique
[Termes IGN] aide à la décision
[Termes IGN] évaluation des données
[Termes IGN] incertitude des données
[Termes IGN] incertitude géométrique
[Termes IGN] information géographiqueNuméro de notice : A2002-147 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810210137031 En ligne : https://doi.org/10.1080/13658810210137031 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22062
in International journal of geographical information science IJGIS > vol 16 n° 5 (july 2002) . - pp 405 - 417[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 079-02051 RAB Revue Centre de documentation En réserve L003 Disponible Developing a common spatial data infrastructure between state and local government: an Australian case study / S. Jacoby in International journal of geographical information science IJGIS, vol 16 n° 4 (june 2002)
[article]
Titre : Developing a common spatial data infrastructure between state and local government: an Australian case study Type de document : Article/Communication Auteurs : S. Jacoby, Auteur ; L. Ting, Auteur ; Ian Williamson, Auteur ; J. Smith, Auteur Année de publication : 2002 Article en page(s) : pp 305 - 322 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] Australie
[Termes IGN] collectivité territoriale
[Termes IGN] échange de données informatisé
[Termes IGN] infrastructure nationale des données localisées
[Termes IGN] intégrité des donnéesRésumé : (Auteur) Over the last decade a number of countries and states have successfully established complete spatial data infrastructures (SDIs) incorporating core digital map bases such as the cadastre or land parcel layer, topography, hydrology, road networks and administrative boundaries. These have usually been based on the amalgamation of national or state mapping and cadastral or land registration systems. At the same time many cities or Local Governments world-wide have established their own SDIs although they are more commonly referred to as geographical information systems. However in most cases the relationship between the Local Government and the National or State systems is at best poor. The result is that in many cases Local Government does not use the state SDI. This presents many difficulties in establishing state or national data sets, particularly where Local Government is responsible for controlling or maintaining the integrity of specific land related data in the state SDI. This paper describes the successful establishment of a partnership between 78 Local Government authorities and a State Government in Australia. This successful partnership has resulted in the State providing and updating the basic SDI for Local Government and Local Government in turn providing land parcel and property data to the State Government. This has resulted in significant improvements being made to the core map bases in the State SDI (such as the increased integrity of the state street address file), a marked reduction in duplicative mapbase maintenance activity (particularly by Local Government) and increased adoption of GIS technologies by Local Government with the beginnings of considerable flow-on benefits to the community being observed. The authors believe that this is a useful model which facilitates the SDI concept becoming a reality and which has generic application in many countries world-wide. Numéro de notice : A2002-159 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810110096001 En ligne : https://doi.org/10.1080/13658810110096001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22074
in International journal of geographical information science IJGIS > vol 16 n° 4 (june 2002) . - pp 305 - 322[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 079-02041 RAB Revue Centre de documentation En réserve L003 Disponible Moment representation of polygons for the assessment of their shape quality / Atef Bel Hadj Ali in Journal of Geographical Systems, vol 4 n° 2 (June 2002)
[article]
Titre : Moment representation of polygons for the assessment of their shape quality Type de document : Article/Communication Auteurs : Atef Bel Hadj Ali , Auteur Année de publication : 2002 Article en page(s) : pp 209 - 232 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] jeu de données localisées
[Termes IGN] mesure de similitude
[Termes IGN] moment d'inertie
[Termes IGN] objet géographique complexe
[Termes IGN] objet géographique zonal
[Termes IGN] polygone
[Termes IGN] qualité des donnéesRésumé : (auteur) Assessing the quality of a geographical data set requires comparison with a reference data set where the positions, shapes and functions of the geographical entities involved are described more realistically, i.e., more accurately and more precisely. While positional accuracy and semantic exactitude have been much studied by GI scientists, and also (though to a lesser degree) shape quality of linear entities, very few works have been directed towards the assessment of the quality of areal entities. This paper focus on assessing shape quality of areal entities.
Areal entities are usually represented in GIS by circular lists of coordinates that build polygons. This hinders the assessment of shape quality. Such a representation does not allow to easily grasp how an areal entity is structured. Areal entities are various: they may be simple polygons, complex polygons or regions (aggregates of simple or complex polygons with or without holes). Using coordinates to represent an area as a polygon does not make it easy to compare two objects that have globally the same shape with highly disturbed contours. Relevant representations for complex geographical entities are then required in order to handle the whole of their geometrical structure.
This paper focuses on such a representation, which has been investigated at the COGIT laboratory of IGN (The French National Mapping Agency). This method allows the description of shapes for geographical entities by means of mathematical moments. This technique has been extensively implemented in the pattern recognition domain and in robotics for shape matching, optical character recognition (OCR), remote sensing and signature verification, among others.
In our GI quality domain, the moments will be used to assess the shape quality of areal entities. This requires that groups of matched objects be first built between the reference data set and the data set to be assessed, which may be achieved by using existing matching tools.
In the first part of this paper the transformation of areal entities into moments is presented. Geometrical moments, complex moments and orthogonal moments (namely, Legendre moment and Zernike moments) are all addressed.
In the second part, similarity indexes and metrics in these spaces of representation are defined. Finally, we show the performance of these techniques through tests carried out on real geographical data sets and we present an example of how this new representation may be used to qualify shape between matched entities.Numéro de notice : A2002-405 Affiliation des auteurs : COGIT (1988-2011) Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s101090100067 En ligne : https://doi.org/10.1007/s101090100067 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=103335
in Journal of Geographical Systems > vol 4 n° 2 (June 2002) . - pp 209 - 232[article]Le RGE-ZUD satisfera les besoins de gestion de la propriété publique / Pierre Clergeot in Géomètre, vol 2002 n° 6 (juin 2002)
[article]
Titre : Le RGE-ZUD satisfera les besoins de gestion de la propriété publique Type de document : Article/Communication Auteurs : Pierre Clergeot, Auteur Année de publication : 2002 Article en page(s) : pp 44 - 45 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] Conseil national de l'information géographique
[Termes IGN] domaine public
[Termes IGN] gestion foncière
[Termes IGN] référentiel à grande échelle
[Termes IGN] zone urbaineRésumé : (Auteur) Géomètre-expert et membre du CNIG, Patrick Bezard-Falgas explique le contenu du référentiel à grande échelle en zones urbaines denses et le rôle qu'il peut jouer dans la maîtrise du domaine public. Numéro de notice : A2002-119 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22034
in Géomètre > vol 2002 n° 6 (juin 2002) . - pp 44 - 45[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 063-02061 RAB Revue Centre de documentation En réserve L003 Disponible The UK land cover map 2000: construction of a parcel-based vector map from satellite images / R.M. Fuller in Cartographic journal (the), vol 39 n° 1 (June 2002)
[article]
Titre : The UK land cover map 2000: construction of a parcel-based vector map from satellite images Type de document : Article/Communication Auteurs : R.M. Fuller, Auteur ; Gm. Smith, Auteur ; J.M. Sanderson, Auteur ; R.A. Hill, Auteur ; A.G. Thomson, Auteur Année de publication : 2002 Article en page(s) : pp 15 - 25 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie thématique
[Termes IGN] base de données d'occupation du sol
[Termes IGN] carte d'occupation du sol
[Termes IGN] classificateur paramétrique
[Termes IGN] classification dirigée
[Termes IGN] Grande-Bretagne
[Termes IGN] historique des données
[Termes IGN] identification automatique
[Termes IGN] image satellite
[Termes IGN] Royaume-Uni
[Termes IGN] vectorisationRésumé : (Auteur) Land Cover Map 2000 (LCM2000) is a thematic classification of satellite image data covering the entire United Kingdom. The map updates and substantially upgrades the Land Cover Map of Great Britain (LCMGB), made in 1990-92. This paper outlines the character of the map through a description of its specification, production and outputs. The paper is aimed at users of LCM2000 and derived data who need to understand more of the map and its characteristics. The paper also outlines plans for making data available to researchers and applied users. The most important development in LCM2000 was the spectral segmentation of images to generate vector land parcels. Land cover was then identified by the spectral classification of the image data in these parcels. Classification used specially developed procedures which exploited known spatial, spectral and contextual characteristics of land cover. The resultant GIS incorporates, within its vector structure, detailed attribute data which record parcel-based land cover, plus information on class probabilities, data on withinparcel heterogeneity, information on landscape structure and context, cover information from LCMGB, together with a record of each parcel's processing history. Numéro de notice : A2002-171 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/caj.2002.39.1.15 En ligne : https://www.tandfonline.com/doi/abs/10.1179/caj.2002.39.1.15 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22086
in Cartographic journal (the) > vol 39 n° 1 (June 2002) . - pp 15 - 25[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 030-02011 RAB Revue Centre de documentation En réserve L003 Disponible Integration of GPS with remote sensing and GIS: reality and prospect / J. Gao in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 5 (Mai 2002)PermalinkVagueness in geographic categories a setback to semantic interoperability / Eleni Tomai (25/04/2002)PermalinkIntegration of laser-derived DSMs and matched image edges for generating an accurate surface model / K. Mcintosh in ISPRS Journal of photogrammetry and remote sensing, vol 56 n° 3 (April - June 2002)PermalinkLe marché Français des SIG en 2002 : situation, évolutions, perspectives / Henri Pornon in Géomatique expert, n° 15 (01/04/2002)PermalinkLe marché de la géomatique en 2001 selon Daratech / Anonyme in Géomatique expert, n° 15 (01/04/2002)PermalinkRGE : référentiel à grande échelle (2ème partie) / Françoise de Blomac in SIG la lettre, n° 36 (avril 2002)PermalinkDual grid: a new approach for robust spatial algebra implementation / J.A. Cotelo Lema in Geoinformatica, vol 6 n° 1 (March - May 2002)PermalinkMerging R-trees: efficient strategies for local bulk insertion / L. Chen in Geoinformatica, vol 6 n° 1 (March - May 2002)PermalinkOptimized resource allocation for GIS-based model implementation / M. Crosetto in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 3 (March 2002)PermalinkRGE : référentiel à grande échelle ou risque général d'enlisement ? / Françoise de Blomac in SIG la lettre, n° 35 (mars 2002)Permalink