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Mapping impervious surface type and sub-pixel abundance using Hyperion hyperspectral imagery / J. Falcone in Geocarto international, vol 20 n° 4 (December 2005 - February 2006)  

Public [article]  inGeocarto international > vol 20 n° 4 (December 2005 - February 2006) . - pp 3 - 10 Titre : Mapping impervious surface type and sub-pixel abundance using Hyperion hyperspectral imagery Type de document : Article/Communication Auteurs : J. Falcone, Auteur ; R. Gomez, Auteur Année de publication : 2005 Article en page(s) : pp 3 - 10 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] analyse comparative [Termes IGN] analyse des mélanges spectraux [Termes IGN] carte d'occupation du sol [Termes IGN] détection de contours [Termes IGN] image EO1-Hyperion [Termes IGN] image hyperspectrale [Termes IGN] image Ikonos [Termes IGN] image Landsat-ETM+ [Termes IGN] milieu urbain [Termes IGN] restitution numérique [Termes IGN] surface imperméable [Termes IGN] Washington (Etats-Unis ; état) Résumé : (Auteur) Impervious surfaces have been identified as an important and quantifiable indicator of environmental degradation in urban settings. A number of research efforts have been directed at mapping impervious surface type using multispectral imagery. To date, however, no studies have compared equivalent techniques using multispectral and hyperspectral imagery to that end. In this study, data from NASA's 220-channel Hyperion instrument were used to: a) delineate three types of impervious surface, and b) map sub-pixel percent abundance for a study site near Washington, D.C., USA. The results were compared with the results of similar methods using same-spatial-resolution Landsat ETM+ data for mapping impervious surface type, and with the results of the U. S. Geological Survey's National Land Cover Data (NLCD) 2001 impervious surface data layer, which is derived-from Landsat and high-resolution Ikonos data. The accuracy of discriminating impervious surface type using Hyperion data was assessed at 88% versus Landsat at 59%. The sub-pixel percent impervious map corresponded well with the NLCD 2001; impervious surface in the study area was calculated at 29.3% for NLCD 2001 and 28.4% for the Hyperion derived layer. The results suggest that fairly simple techniques using hyperspectral data are effective for quantifying impervious surface type, and that high-spectral-resolution imagery may be a good alternative to high-spatial-resolution data. Numéro de notice : A2005-550 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040508542358 Date de publication en ligne : 02/01/2008 En ligne : https://doi.org/10.1080/10106040508542358 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27686 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
059-05041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Monitoring and modelling cropland loss in rapidly growing urban and depopulating rural counties using remotely sensed data and GIS / A.N. Petrov in Geocarto international, vol 20 n° 4 (December 2005 - February 2006)  

Public [article]  inGeocarto international > vol 20 n° 4 (December 2005 - February 2006) . - pp 45 - 52 Titre : Monitoring and modelling cropland loss in rapidly growing urban and depopulating rural counties using remotely sensed data and GIS Type de document : Article/Communication Auteurs : A.N. Petrov, Auteur ; R. Sugumaran, Auteur Année de publication : 2005 Article en page(s) : pp 45 - 52 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] analyse diachronique [Termes IGN] automate cellulaire [Termes IGN] croissance urbaine [Termes IGN] développement durable [Termes IGN] image Landsat-ETM+ [Termes IGN] image Landsat-TM [Termes IGN] Iowa (Etats-Unis) [Termes IGN] modèle de Markov [Termes IGN] modélisation spatiale [Termes IGN] planification urbaine [Termes IGN] prédiction [Termes IGN] simulation dynamique [Termes IGN] surface cultivée [Termes IGN] surveillance agricole [Termes IGN] urbanisation [Termes IGN] utilisation du sol Résumé : (Auteur) Iowa is the leading agricultural state in the USA. Increasing suburban and rural development as well as industrial and commercial growth threaten Iowa's unique farmlands and cause their rapid conversion into other land uses. Thus, detecting spatial patterns of cropland loss and predicting future loss are important issues for better agricultural planning and management. This study provides a unique approach for monitoring and modeling cropland loss in Iowa, focusing on differences between rapidly growing urban counties and rural depopulating counties. The monitoring of farmland loss is based on classified 1984, 1992, and 2000 two-season Landsat Thematic Mapper (TM) and Enhanced Thematic Mapper Plus (ETM+) satellite imagery. The modeling approach used joint cellular automata - Markov simulation procedures to predict cropland loss for 2008 and 2016. Mapping of cropland dynamics, using remotely sensed data in urban and rural counties between 1984 and 2000, revealed that there was a significant decline of croplands in Iowa. The simulation of land cover changes for 2008 and 2016 showed continuing decline of croplands in both urban and rural counties. The results of the study can be used by local planners and managers for the development and application of sustainable agriculture practices in Iowa. Numéro de notice : A2005-551 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040508542363 Date de publication en ligne : 02/01/2008 En ligne : https://doi.org/10.1080/10106040508542363 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27687 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
059-05041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Lidar validation using GIS : a case study comparison between two Lidar collection methods / T.L. Webster in Geocarto international, vol 20 n° 4 (December 2005 - February 2006)  

Public [article]  inGeocarto international > vol 20 n° 4 (December 2005 - February 2006) . - pp 11 - 19 Titre : Lidar validation using GIS : a case study comparison between two Lidar collection methods Type de document : Article/Communication Auteurs : T.L. Webster, Auteur Année de publication : 2005 Article en page(s) : pp 11 - 19 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes IGN] analyse comparative [Termes IGN] données lidar [Termes IGN] erreur systématique [Termes IGN] étalonnage d'instrument [Termes IGN] modèle numérique de surface [Termes IGN] Nouvelle-Ecosse (Canada) [Termes IGN] plateforme logicielle [Termes IGN] point de vérification [Termes IGN] système d'exploitation [Termes IGN] système d'information géographique [Termes IGN] télémètre laser à balayage [Termes IGN] télémétrie laser aéroporté Résumé : (Auteur) In the summer of 2000, the Annapolis Valley of Nova Scotia, Canada was selected for a high-resolution elevation survey utilizing LIDAR (Light Detection And Ranging). Two different LIDAR systems were used to acquire data for the area. The vertical accuracy specification for the survey called for heights to be within an average of 15 cm of measured GPS heights and 95% of the data to be within 30 cm. Prior to the application of these data to geoscientific problems, extensive validation procedures were employed. High precision GPS and traditional surveys were conducted to collect height validation checkpoints. Two validation methods were developed in a GIS environment that involved comparing the checkpoints to the original LIDAR points and to an interpolated "bald earth " DEM. A systematic height error between flight lines for one of the LIDAR methods was detected that related to the calibration procedures used in the survey. This study highlights the differences between laser systems, calibration and deployment methodologies and emphasizes the necessity for independent validation data. Numéro de notice : A2005-552 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040508542359 Date de publication en ligne : 02/01/2008 En ligne : https://doi.org/10.1080/10106040508542359 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27688 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
059-05041	RAB	Revue	Centre de documentation	En réserve L003	Disponible