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Monitoring cross-border trails using airborne digital multispectral imagery and interactive image analysis techniques / L. Cao in Geocarto international, vol 22 n° 2 (June - August 2007)  

Public [article]  inGeocarto international > vol 22 n° 2 (June - August 2007) . - pp 107 - 125 Titre : Monitoring cross-border trails using airborne digital multispectral imagery and interactive image analysis techniques Type de document : Article/Communication Auteurs : L. Cao, Auteur ; D. Stow, Auteur ; J. Kaiser, Auteur ; et al., Auteur Année de publication : 2007 Article en page(s) : pp 107 - 125 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] analyse en composantes principales [Termes IGN] Californie (Etats-Unis) [Termes IGN] frontière [Termes IGN] image ADAR [Termes IGN] image aérienne [Termes IGN] image multibande [Termes IGN] immigration [Termes IGN] Mexique [Termes IGN] sentier Résumé : (Auteur) The objective of this study was to evaluate image-based procedures for monitoring cross-border foot trails in the US - Mexico border zone in eastern San Diego County using airborne remote sensing techniques. Specifically, digital multi-spectral and multi-temporal imagery from an airborne digital multi-spectral imaging system, digital image processing, and visual image analysis techniques were explored in the context of detecting and delineating new trail features and updating trail GIS layers. Three trail updating approaches: map-to-image (M-I) overlay, map and image-to-image (M/I-I) differencing, map and image-to-image (M/I-I) swiping and two types of spectral transform, PCA and NDVI, were tested and compared. The M-I overlay was found to be the most reliable trail updating approach. The optimal image enhancement method for the M-I overlay approach varied with vegetation structure. PCA imagery yielded better results than NDVI imagery in a highly disturbed area and NDVI imagery performed better in a densely vegetated area. The M/I-I swiping approach was useful for distinguishing misregistered extant trails from new trail features. Copyright Taylor & Francis Numéro de notice : A2007-460 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040701204073 Date de publication en ligne : 18/06/2007 En ligne : https://doi.org/10.1080/10106040701204073 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28823 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
059-07021	RAB	Revue	Centre de documentation	En réserve L003	Disponible