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Potential and limits of InSAR data for building reconstruction in built-up area / Uwe Stilla in ISPRS Journal of photogrammetry and remote sensing, vol 58 n° 1-2 (June - December 2003)
[article]
Titre : Potential and limits of InSAR data for building reconstruction in built-up area Type de document : Article/Communication Auteurs : Uwe Stilla, Auteur ; Uwe Soergel, Auteur ; U. Thoennessen, Auteur Année de publication : 2003 Article en page(s) : pp 113 - 123 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] analyse comparative
[Termes IGN] données lidar
[Termes IGN] éclairement lumineux
[Termes IGN] identification automatique
[Termes IGN] image radar moirée
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] Lidar
[Termes IGN] milieu urbain
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] segmentation d'imageRésumé : (Auteur) The automatic reconstruction of buildings for the generation of city models is of great interest for different tasks. Threedimensional information can be directly obtained from both, laser (LIDAR) and radar (InSAR) measurements. The features of both sensors are compared. The data acquisition by SAR is described, with emphasis on the special properties of the interferometric SAR principle. A segmentation approach for building reconstruction is proposed. The results show that building reconstruction is possible from InSAR, but the achievable level of detail cannot compete with LIDAR. The main source of limitation is the inherent sidelooking scene illumination of SAR, giving rise to disturbing phenomena interfering with often large parts of the scene. Geometric constraints for the location and size of such problem areas are derived. To identify areas of unreliable data in SAR images of a builtup area, corresponding elevation data are analysed. The impact of the phenomena layover, shadow and dominant scattering at building locations is considered. For this task, a hybrid elevation reference is required. The buildings and the surrounding ground are represented as CAD planes. Natural objects like trees and bushes remain in the raster representation. Copyright ISPRS Numéro de notice : A2003-089 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/S0924-2716(03)00021-2 En ligne : https://doi.org/10.1016/S0924-2716(03)00021-2 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22385
in ISPRS Journal of photogrammetry and remote sensing > vol 58 n° 1-2 (June - December 2003) . - pp 113 - 123[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-03032 RAB Revue Centre de documentation En réserve L003 Disponible 081-03031 RAB Revue Centre de documentation En réserve L003 Disponible Vectorial algebra algorithms for calculating terrain parameters from DEMs and solar radiation modelling in mountainous terrain / J.G. Corripio in International journal of geographical information science IJGIS, vol 17 n° 1 (february 2003)
[article]
Titre : Vectorial algebra algorithms for calculating terrain parameters from DEMs and solar radiation modelling in mountainous terrain Type de document : Article/Communication Auteurs : J.G. Corripio, Auteur Année de publication : 2003 Article en page(s) : pp 1 - 23 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] algèbre
[Termes IGN] éclairement lumineux
[Termes IGN] géomètrie algorithmique
[Termes IGN] gradient de pente
[Termes IGN] modèle atmosphérique
[Termes IGN] modèle numérique de surface
[Termes IGN] Mont-Blanc, massif du
[Termes IGN] montagne
[Termes IGN] pente
[Termes IGN] rayonnement solaireRésumé : (Auteur) Terrain parameters derived from digital elevation models (DEMs), such as slope gradient, aspect and cell surface area, are represented as a vector normal to the surface and calculated using the minimum areal unit of the DEM, that is enclosed between four data points. The position of the Sun is calculated by applying rotational matrices to a unit vector defined at noon as a function of latitude and declination. The direct component of insolation intercepted by the cell surface is then calculated as a dot product between the unit vector in the direction of the Sun and the unit vector normal to surface, multiplied by direct normal irradiation. Hillshading is computed by scanning the projection of cells onto a solar illumination plane perpendicular to the Sun direction. Horizon angles and estimated sky view factor are calculated using a more economical algorithm than a rigorous evaluation of all the angles subtended by every grid cell to each other. The performance of the slope algorithm is evaluated using a synthetic surface and real world examples are given for the Mont Blanc Massif, in the French Alps. Numéro de notice : A2003-102 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/713811744 En ligne : https://doi.org/10.1080/713811744 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22398
in International journal of geographical information science IJGIS > vol 17 n° 1 (february 2003) . - pp 1 - 23[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-03011 RAB Revue Centre de documentation En réserve L003 Disponible 079-03012 RAB Revue Centre de documentation En réserve L003 Disponible Bidirectional NDVI and atmospherically resistant BRDF inversion for vegetation canopy / F. Gao in IEEE Transactions on geoscience and remote sensing, vol 40 n° 6 (June 2002)
[article]
Titre : Bidirectional NDVI and atmospherically resistant BRDF inversion for vegetation canopy Type de document : Article/Communication Auteurs : F. Gao, Auteur ; Y.J. Xiaowen, Auteur ; C.B. Schaaf, Auteur ; A. Strahler, Auteur Année de publication : 2002 Article en page(s) : pp 1269 - 1278 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Télédétection
[Termes IGN] bande infrarouge
[Termes IGN] bande rouge
[Termes IGN] canopée
[Termes IGN] distribution du coefficient de réflexion bidirectionnelle BRDF
[Termes IGN] éclairement lumineux
[Termes IGN] image optique
[Termes IGN] image Terra-MODIS
[Termes IGN] inversion
[Termes IGN] modèle physique
[Termes IGN] Normalized Difference Vegetation Index
[Termes IGN] spectroradiométrieRésumé : (Auteur) The normalized difference vegetation index (NDVI) has been widely applied in optical remote sensing. However, it has been demonstrated that NDVI is still partially affected by atmospheric path scattering and bidirectional (illumination and viewing geometry) effects. In this paper we present the benefit of using a bidirectional NDVI, and we discuss the problems in using the maximum NDVI composite method. Based on the assumption that a clear day has a larger NDVI value and a cloudy day has a smaller NDVI value (smaller reflectance in the nearinfrared band and larger reflectance in red band due to atmospheric path scattering), the ratio of squared observed NDVI values and calculated NDVI values is used as a weight in our inversion method. The calculated NDVI values are derived from previously inverted bidirectional reflectance distribution functions (BRDFs). The inversion process will loop until all weights converge. Our research on the early Terra/MODIS data using a semiempirical kerneldriven BRDF model (the RossThickLiTransit model) shows that this new method can improve inversion results whenever some cloudy pixels are not filtered out. As cloud detection and subpixel cloudiness are always a problem, this technique should still be very useful in improving the quality of BRDF inversion. Numéro de notice : A2002-187 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2002.800241 En ligne : https://ieeexplore.ieee.org/document/1020259 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22102
in IEEE Transactions on geoscience and remote sensing > vol 40 n° 6 (June 2002) . - pp 1269 - 1278[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-02061 RAB Revue Centre de documentation En réserve L003 Disponible 065-02062 RAB Revue Centre de documentation En réserve L003 Disponible Modifications of Tanaka's illuminated contour method / Patrick Kennelly in Cartography and Geographic Information Science, vol 28 n° 2 (April 2001)
[article]
Titre : Modifications of Tanaka's illuminated contour method Type de document : Article/Communication Auteurs : Patrick Kennelly, Auteur ; A.J. Kimerling, Auteur Année de publication : 2001 Article en page(s) : pp 111 - 123 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie numérique
[Termes IGN] carte des pentes
[Termes IGN] contour
[Termes IGN] éclairement lumineux
[Termes IGN] niveau de gris (image)
[Termes IGN] représentation du relief
[Termes IGN] visualisation cartographiqueRésumé : (Auteur) Visualization of topography can be greatly facilitated by the illuminated contour method. This method, popularized in a hand-drafted map byTanaka, uses a gray background with black and white contours. A direction of illumination is assumed, and white contours represent illuminated topography, while black contours represent non-illuminated or shaded areas. Additionally, thickness of contours varies with the cosine of the angle between the azimuth of maximum slope (i.e., aspect) and the azimuth of illumination. We modified Tanaka's method by basing thickness of contour lines on twice the cosine of the angle between the surface normal and the illumination vector. The cosine of this angle is most commonly used in analytical bill shading. In addition, we present maps with changes in other visual variables and offer our evaluations. Lines with gray tones instead of black and white lines do not improve the illumination effect. We believe variations in the colors of contours and background with elevation can visually enforce information regarding topography. Our use of colors for aspect and variations in the width of contours for slope adds information to the map but does not assist with visualization of topography. Numéro de notice : A2001-100 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1559/152304001782173709 En ligne : https://doi.org/10.1559/152304001782173709 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=21800
in Cartography and Geographic Information Science > vol 28 n° 2 (April 2001) . - pp 111 - 123[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 032-01021 RAB Revue Centre de documentation En réserve L003 Disponible Remote sensing model adaptation to vey high resolution digital images of urban areas / Didier Boldo (2001)
Titre : Remote sensing model adaptation to vey high resolution digital images of urban areas Type de document : Article/Communication Auteurs : Didier Boldo , Auteur ; Hervé Le Men , Auteur Editeur : New York : Institute of Electrical and Electronics Engineers IEEE Année de publication : 2001 Conférence : IEEE-ISPRS 2001, joint workshop on remote sensing and data fusion over urban areas 08/11/2001 09/11/2001 Rome Italie Proceedings IEEE Importance : pp 20 - 24 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] correction radiométrique
[Termes IGN] éclairement lumineux
[Termes IGN] façade
[Termes IGN] image à haute résolution
[Termes IGN] image numérique
[Termes IGN] zone urbaineRésumé : (auteur) Very high resolution digital images of urban areas exhibit some illumination effects which can be neglected at low or medium resolution. In order to achieve a good radiometric correction, new effects have to be taken explicitly into account. This paper deals with the integration of two urban area particularities in a remote sensing model: sky occlusion and facades retro illumination. Numéro de notice : C2001-054 Affiliation des auteurs : MATIS (1993-2011) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1109/DFUA.2001.985718 Date de publication en ligne : 06/08/2002 En ligne : https://doi.org/10.1109/DFUA.2001.985718 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86197 Cahier B1 bases physiques de la télédétection / A. Fischer (1992)PermalinkGeometric and radiometric analysis of a CCD-camera based photogrammetric close-range system / Horst A. Beyer (1992)PermalinkHyperspherical direction cosine transformation for separation of spectral and illumination information in digital scanner data / G.W. Pouch in Photogrammetric Engineering & Remote Sensing, PERS, vol 56 n° 4 (april 1990)PermalinkA 10 km resolution image of the entire night-time Earth based on cloud-free satellite photographs in the 400-1100 mm band / W.T. Sullivan in International Journal of Remote Sensing IJRS, vol 10 n° 1 (January 1989)PermalinkRadiometric scene normalization using pseudoinvariant features / J.R. Schott in Remote sensing of environment, vol 26 n° 1 (01/10/1988)PermalinkSoil and atmosphere influences on the spectra of partial canopies / A.R. Huete in Remote sensing of environment, vol 25 n° 1 (01/06/1988)PermalinkCensus of grey seals by aerial photography / A.R. Hiby in Photogrammetric record, vol 12 n° 71 (April - September 1988)PermalinkInfluence of topography on forest reflectance using Landsat Thematic Mapper and digital terrain data / C.E. Leprieur in Photogrammetric Engineering & Remote Sensing, PERS, vol 54 n° 4 (april 1988)PermalinkModelling planting configuration and canopy architecture effects on diurnal light absorption changes in cotton / A.J. Richardson in International Journal of Remote Sensing IJRS, vol 9 n° 4 (April 1988)PermalinkAIS radiometry and the problem of contamination from mixed spectral orders / J.E. Conel in Remote sensing of environment, vol 24 n° 1 (February 1988)Permalink