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Display of pixel loss and replication in reprojecting raster data from the sinusoidal projection / Denis White in Geocarto international, vol 21 n° 2 (June - August 2006)  

Public [article]  inGeocarto international > vol 21 n° 2 (June - August 2006) . - pp 19 - 22 Titre : Display of pixel loss and replication in reprojecting raster data from the sinusoidal projection Type de document : Article/Communication Auteurs : Denis White, Auteur Année de publication : 2006 Article en page(s) : pp 19 - 22 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Projections [Termes IGN] analyse comparative [Termes IGN] données maillées [Termes IGN] planisphère [Termes IGN] projection (équivalente) de Mollweide [Termes IGN] projection carte plate carrée [Termes IGN] projection de Hammer-Aitoff [Termes IGN] projection de Miller [Termes IGN] projection de Peters [Termes IGN] projection de Robinson [Termes IGN] projection de van der Grinten [Termes IGN] projection sinusoïdale Résumé : (Auteur) Recent studies show the sinusoidal projection to be a superior planar projection for representing global raster datasets. This study uses the sinusoidal projection as a basis for evaluating pixel loss and replication in eight other planar map projections. The percent of pixels represented accurately as a single pixel when projected from the sinusoidal to one of the other projections ranged from a low of about 58% for the Van der Grinten projection to a high of about 83% for the Mollweide projection. The graphic display of these losses and gains of pixels had revealing patterns, for example, large values of replication in the higher latitudes of cylindrical projections. Copyright Geocarto international Numéro de notice : A2006-323 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040608542379 Date de publication en ligne : 04/01/2008 En ligne : https://doi.org/10.1080/10106040608542379 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28047 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
059-06021	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Performance metrics: how and when / S.A. Israel in Geocarto international, vol 21 n° 2 (June - August 2006)  

Public [article]  inGeocarto international > vol 21 n° 2 (June - August 2006) . - pp 23 - 32 Titre : Performance metrics: how and when Type de document : Article/Communication Auteurs : S.A. Israel, Auteur Année de publication : 2006 Article en page(s) : pp 23 - 32 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] analyse discriminante [Termes IGN] métrique [Termes IGN] test de performance Résumé : (Auteur) This paper compares different classification performance metrics commonly used for environmental monitoring with remotely sensed satellite data and their associated error bounds. Discriminant functions were generated for three classifiers using common training data. Identical independant test data were classified by each discriminant function. The classified test values were evaluated by each performance metric. Each perfomance measure, its error bound, and its significance were computed. The performance measures were divided into three classes : those measures associated with contingency matrices, casewise comparisons, and ROC curves. The operation, results, and limitations of each metric are discussed. Copyright Geocarto international Numéro de notice : A2006-324 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040608542380 Date de publication en ligne : 04/06/2008 En ligne : https://doi.org/10.1080/10106040608542380 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28048 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
059-06021	RAB	Revue	Centre de documentation	En réserve L003	Disponible