Détail de l'auteur
Auteur Peter F. Fisher |
Documents disponibles écrits par cet auteur (13)
Ajouter le résultat dans votre panier Affiner la recherche Interroger des sources externesA comparison of fuzzy AHP and ideal point methods for evaluating land suitability / M. Elaalem in Transactions in GIS, vol 15 n° 3 (July 2011)
Titre : A comparison of fuzzy AHP and ideal point methods for evaluating land suitability Type de document : Article/Communication Auteurs : M. Elaalem, Auteur ; Peter F. Fisher, Auteur ; A. Comber, Auteur Année de publication : 2011 Article en page(s) : pp 329 - 346 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse comparative
[Termes IGN] classification automatique
[Termes IGN] cultures irriguées
[Termes IGN] outil d'aide à la décision
[Termes IGN] pertinence
[Termes IGN] processus de hiérarchisation analytiqueRésumé : (Auteur) This article compares two fuzzy approaches to land suitability evaluations, Analytical Hierarchy Process (AHP) and Ideal Point. The methods were evaluated using a case study which models the opportunities for wheat production under irrigation conditions in the north-western region of Jeffara Plain, Libya. A number of relevant soil and landscape criteria were identified through a review of the literature and their weights specified as a result of discussions with local experts. The results of the Fuzzy AHP showed that the majority of the study area has membership values to the set of suitability between 0.40 and 0.50, while the results of the Ideal Point approach revealed most of the study area to have membership values between 0.30 and 0.40. While the Fuzzy AHP and Ideal Point approaches accommodate the continuous nature of many soil properties and produce more intuitive distributions of land suitabilities values, the Fuzzy AHP approach was found to be better than Fuzzy Ideal Point. This was due to the latter's tendency to be biased towards positive and negative ideal values. Numéro de notice : A2011-226 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2011.01260.x Date de publication en ligne : 06/06/2011 En ligne : https://doi.org/10.1111/j.1467-9671.2011.01260.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31004
in Transactions in GIS > vol 15 n° 3 (July 2011) . - pp 329 - 346[article]Accuracy 2010 : Proceedings of the Ninth international symposium on spatial accuracy assessment in natural resources and environmental sciences, Leicester, UK, 20 - 23 juillet 2010 / Nicholas J. Tate (2010)
Titre : Accuracy 2010 : Proceedings of the Ninth international symposium on spatial accuracy assessment in natural resources and environmental sciences, Leicester, UK, 20 - 23 juillet 2010 Type de document : Actes de congrès Auteurs : Nicholas J. Tate, Éditeur scientifique ; Peter F. Fisher, Éditeur scientifique Editeur : Leicester [Royaume-Uni] : University of Leicester Année de publication : 2010 Autre Editeur : International Spatial Accuracy Research Association ISARA Conférence : Accuracy 2010, 9th international symposium on spatial accuracy assessment in natural resources and environmental sciences 20/07/2010 23/07/2010 Leicester Royaume-Uni OA Proceedings Importance : 436 p. Format : 21 x 30 cm Langues : Anglais (eng) Descripteur : [Termes IGN] données localisées des bénévoles
[Termes IGN] géostatistique
[Termes IGN] géovisualisation
[Termes IGN] incertitude des données
[Termes IGN] incertitude géométrique
[Termes IGN] incertitude temporelle
[Termes IGN] précision des données
[Termes IGN] propagation d'erreur
[Termes IGN] sous ensemble flou
[Termes IGN] traitement de données localiséesIndex. décimale : CG2010 Actes de congrès en 2010 Note de contenu : 1 - Keynotes
2 - Remote sensing and image interpretation
3 - Fuzzy uncertainty 1
4 - Uncertainty in space and time
5 - Geostatistics 1
6 - ISPRS session
7 - Uncertainty propagation
8 - Land use and land cover
9 - DEM uncertainty 1
10 - Remote sensing
11 - Geoprocessing
12 - Model uncertainty and validation
13 - Vizualisation
14 - Sampling design
15 - Spatio-temporal uncertainty
16 - DEM uncertainty 2
17 - Geostatistics 2
18 - Fuzzy uncertainty 2
19 - DEM uncertainty 3
20 - Remote sensing classification
21 - Environmental quality
22 - Small area concerns
23 - Ecology and forestry
24 - VGI and web-based geoprocessing
25 - Geocoding and adress coding
26 - PostersNuméro de notice : 21370 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Actes DOI : sans En ligne : http://spatialaccuracy.org/spatial-accuracy-2010/ Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90097 Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 21370-01 CG2010 Livre Centre de documentation Congrès Disponible
Titre : Multivariate texture-based segmentation of remotely sensed imagery for extraction of objects and their uncertainty Type de document : Article/Communication Auteurs : Arko Lucieer, Auteur ; Alfred Stein, Auteur ; Peter F. Fisher, Auteur Année de publication : 2005 Article en page(s) : pp 2917 - 2936 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] analyse multivariée
[Termes IGN] extraction automatique
[Termes IGN] image CASI
[Termes IGN] image multibande
[Termes IGN] incertitude des données
[Termes IGN] niveau de gris (image)
[Termes IGN] objet géographique
[Termes IGN] segmentation d'image
[Termes IGN] texture d'imageRésumé : (Auteur) In this study, a segmentation procedure is proposed, based on grey-level and multivariate texture to extract spatial objects from an image scene. Object uncertainty was quantified to identify transitions zones of objects with indeterminate boundaries. The Local Binary Pattern (LBP) operator, modelling texture, was integrated into a hierarchical splitting segmentation to identifiy homogeneous texture regions in an image. We proposed a multivariate extension of the standard univariate LBP operator to describe colour texture. The paper is illustrated with two case studies. The first considers an image with a composite of texture regions. The two LBP operators provided good segmentation results on both grey-scale and colour textures, depicted by accuracy values of 96% and 98% respectively. The second case study involved segmentation of coastal land cover objects from a multispectral Compact Airborne Spectral Imager (CASI) image, of a coastal area in the UK. Segmentation based on the univariate LBP measure provided unsatisfactory segmentation results from a single CASI band (70% accuracy). A multivariate LBP-based segmentation of three CASI bands improved segmentation results considerably (77% accuracy). Uncertainty values for object building blocks provided valuable information for identification of object transition zones. We conclude that the multivariate LBP texture model in combinaison with a hierarchical splitting segmentation framework is suitable for identifying objects and for quantifying their uncertainty. Numéro de notice : A2005-294 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160500057723 En ligne : https://doi.org/10.1080/01431160500057723 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27430
in International Journal of Remote Sensing IJRS > vol 26 n° 14 (July 2005) . - pp 2917 - 2936[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-05141 RAB Revue Centre de documentation En réserve L003 Exclu du prêt
Titre : Integrating land-cover data with different ontologies: identifying change from inconsistency Type de document : Article/Communication Auteurs : A. Comber, Auteur ; R. Wadsworth, Auteur ; Peter F. Fisher, Auteur Année de publication : 2004 Article en page(s) : pp 691 - 708 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] analyse comparative
[Termes IGN] carte d'occupation du sol
[Termes IGN] cohérence des données
[Termes IGN] détection de changement
[Termes IGN] intégration de données
[Termes IGN] jeu de données localisées
[Termes IGN] occupation du sol
[Termes IGN] ontologie
[Termes IGN] Royaume-Uni
[Termes IGN] série temporelleRésumé : (Auteur) Spatially coincident land-cover information frequently varies due to technological and political variations. This is especially problematic for timeseries analyses. We present an approach using expert expressions of how the semantics of different datasets relate to integrating temporal time series landcover information where the classification classes have fundamentally changed. We use land-cover mapping in the UK (LCMGB and LCM2000) as example data sets because of the extensive object-based meta-data in the LCM2000. Inconsistencies between the two datasets can arise from random, gross and systematic error and from an actual change in land cover. Locales of possible land-cover change are inferred by comparing characterizations derived from the semantic relations and meta-data. Field visits showed errors of omission to be 21% and errors of commission to be 28%, despite the accuracy limitations of the land-cover information when compared with the field survey component of the Countryside Survey 2000. Numéro de notice : A2004-397 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810410001705316 En ligne : https://doi.org/10.1080/13658810410001705316 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26924
in International journal of geographical information science IJGIS > vol 18 n° 7 (november 2004) . - pp 691 - 708[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-04071 RAB Revue Centre de documentation En réserve L003 Disponible 079-04072 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Developments in Spatial Data Handling : 11th International Symposium on Spatial Data Handling, SDH 2004 Type de document : Actes de congrès Auteurs : Peter F. Fisher, Éditeur scientifique Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2004 Conférence : SDH 2004, 11th international symposium on Spatial Data Handling 23/08/2004 25/08/2005 Leicester Royaume-Uni Proceedings Springer Importance : 676 p. Format : 16 x 24 cm ISBN/ISSN/EAN : 978-3-540-22610-9 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] données spatiotemporelles
[Termes IGN] généralisation automatique de données
[Termes IGN] géostatistique
[Termes IGN] imprécision des données
[Termes IGN] incertitude des données
[Termes IGN] indexation
[Termes IGN] interpolation
[Termes IGN] modèle numérique de surface
[Termes IGN] ontologie
[Termes IGN] qualité des données
[Termes IGN] relation spatiale
[Termes IGN] visualisation 3D
[Termes IGN] WebSIGRésumé : (éditeur) This book is the proceedings of the 11 International Symposium on Spatial Data Handling. The conference was held in Leicester, United Kingdom, on August 23rd to 25th 2004, as a satellite meeting to the Congress of the International Geographical Union in Glasgow. The International Symposium on Spatial Data Handling is a refereed conference. All the papers in this book were submitted as full papers and reviewed by at least two members of the Programme Committee. 83 papers in all were submitted and among the 50 included here, all are considered above average by the reviewers. The papers cover the span of Geographical Information Science topics, which have always been the concern of the conference. Topics from uncertainty (error, vagueness, and ontology and semantics) to web issues, digital elevation models and urban infrastructure. Numéro de notice : 17085 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Actes DOI : 10.1007/b138045 En ligne : https://doi.org/10.1007/b138045 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79458
- Why and how evaluating generalised data ? / Sylvain Bard (2004)
- Integrating structured descriptions of processes in geographical metadata / Bénédicte Bucher (2005)
- Consistency assessment between multiple representations of geographical databases: a specification-based approach / David Sheeren (2004)
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Code-barres Cote Support Localisation Section Disponibilité 17085-01 CG2004 Livre Centre de documentation Congrès Disponible PermalinkPermalinkPermalinkPermalinkPermalinkPermalinkPermalinkPermalink
