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Spectral reflectance and emissivity features of broad leaf plants: prospects for remote sensing in the thermal infrared (8.0-14.0 um) / B. Ribeiro Da Luz in Remote sensing of environment, vol 109 n° 4 (30 August 2007)  

Public [article]  inRemote sensing of environment > vol 109 n° 4 (30 August 2007) . - pp 393 - 405 Titre : Spectral reflectance and emissivity features of broad leaf plants: prospects for remote sensing in the thermal infrared (8.0-14.0 um) Type de document : Article/Communication Auteurs : B. Ribeiro Da Luz, Auteur ; J.K. Crowley, Auteur Année de publication : 2007 Article en page(s) : pp 393 - 405 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] emissivité [Termes IGN] exitance spectrale [Termes IGN] feuille (végétation) [Termes IGN] identification automatique [Termes IGN] image thermique [Termes IGN] rapport signal sur bruit [Termes IGN] rayonnement infrarouge thermique [Termes IGN] réflectance spectrale [Termes IGN] végétation Résumé : (Auteur) Field emissivity measurements were made of leaves collected from nine deciduous tree and agricultural plant species. The data show, for the first time, that it is possible to discriminate subtle spectral emissivity features of leaves from the natural background emission. Under conditions of controlled measurement geometry (leaves arranged to cover a flat surface), the field emissivity spectra agreed fairly well with emissivity values calculated from laboratory directional hemispherical reflectance measurements. Spectral features associated with a variety of leaf chemical constituents, including cellulose, cutin, xylan, silica, and oleanolic acid could be identified in the field emissivity data. Structural aspects of leaf surfaces also influenced spectral behavior, notably the abundance of trichomes, as well as wax thickness and texture. Field spectral measurements made at increasing distances from natural plant canopies showed progressive attenuation of the spectral emissivity features. This attenuation is ascribed to increased multiple scattering that superimposes an opposite-in-sign reflected component on the emittance, and to the increasing number of canopy voids within the instrument field of view. Errors associated with the removal of atmospheric features and with the non-isotropic thermal characteristics of canopies also contribute to the loss of spectral information at greater measurement distances. In contrast to visible and short-wave infrared data, thermal infrared spectra of broad leaf plants show considerable spectral diversity, suggesting that such data eventually could be utilized to map vegetation composition. However, remotely measuring the subtle emissivity features of leaves still presents major challenges. To be successful, sensors operating in the 8–14 um atmospheric window must have high signal-to-noise and a small enough instantaneous field of view to allow measurements of only a few leaf surfaces. Methods for atmospheric compensation, temperature–emissivity separation, and spectral feature analysis also will need to be refined to allow the recognition, and perhaps, exploitation of leaf thermal infrared spectral properties. Copyright Elsevier Numéro de notice : A2007-318 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2007.01.008 En ligne : https://doi.org/10.1016/j.rse.2007.01.008 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28681 [article]

Comparative alteration mineral mapping using visible to shortwave infrared (0.4-2.4 um) Hyperion, ALI, and ASTER imagery / B. Hubbard in IEEE Transactions on geoscience and remote sensing, vol 41 n° 6 (June 2003)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 41 n° 6 (June 2003) . - pp 1401 - 1410 Titre : Comparative alteration mineral mapping using visible to shortwave infrared (0.4-2.4 um) Hyperion, ALI, and ASTER imagery Type de document : Article/Communication Auteurs : B. Hubbard, Auteur ; J.K. Crowley, Auteur ; D.R. Zimbelman, Auteur Année de publication : 2003 Article en page(s) : pp 1401 - 1410 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] bande infrarouge [Termes IGN] bande visible [Termes IGN] cartographie thématique [Termes IGN] Cordillère des Andes [Termes IGN] géologie locale [Termes IGN] image EO1-ALI [Termes IGN] image EO1-Hyperion [Termes IGN] image hyperspectrale [Termes IGN] image infrarouge [Termes IGN] image multibande [Termes IGN] image Terra-ASTER [Termes IGN] rayonnement proche infrarouge [Termes IGN] roche [Termes IGN] volcanologie Résumé : (Auteur) Advanced Land Imager (ALI), Advanced SpaceThermal Emission and Reflection Radiometer (ASTER), and Hyperion imaging spectrometer data covering an area in the Central Andes between Volcan Socompa and Salar de Llullaillaco were used to map hydrothermally altered rocks associated with young volcanic systems. Six ALI channels in the visible and near-infrared wavelength range (0.4-1.0 um) were useful discriminating between ferric-iron alteration minerals based on the spectral shapes of electronic absorption features seen in continuum-removed spectra. Six ASTER channels in the short wavelength infrared (1.0-2.5 um) enabled distinctions between clay and sulfate mineral types based on the positions of band related to Al-OH vibrational absorption features. Hypeimagery embedded in the broader image coverage of ALI and ASTER provided essential leverage for calibrating and improving the mapping accuracy of the multispectral data. This capability is especially valuable in remote areas of the earth where available geologic and other ground truth information is limited. Numéro de notice : A2003-218 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2003.812906 En ligne : https://doi.org/10.1109/TGRS.2003.812906 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22514 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
065-03061	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Airborne imaging spectrometer data of the Ruby Mountains, Montana : mineral discrimination using relative absorption band-depth images / J.K. Crowley in Remote sensing of environment, vol 29 n° 2 (01/08/1989)  

Public [article]  inRemote sensing of environment > vol 29 n° 2 (01/08/1989) . - pp 121 - 134 Titre : Airborne imaging spectrometer data of the Ruby Mountains, Montana : mineral discrimination using relative absorption band-depth images Type de document : Article/Communication Auteurs : J.K. Crowley, Auteur ; D.W. Brickey, Auteur ; L.C. Rowan, Auteur Année de publication : 1989 Article en page(s) : pp 121 - 134 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] absorption [Termes IGN] accentuation d'image [Termes IGN] albedo [Termes IGN] minéral [Termes IGN] Montana (Etats-Unis) [Termes IGN] réflectance [Termes IGN] roche [Termes IGN] signature spectrale [Termes IGN] spectromètre imageur Numéro de notice : A1989-359 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/0034-4257(89)90021-7 En ligne : https://doi.org/10.1016/0034-4257(89)90021-7 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=25318 [article]