Descripteur
Documents disponibles dans cette catégorie (1829)
Ajouter le résultat dans votre panier
Visionner les documents numériques
Affiner la recherche Interroger des sources externes
Etendre la recherche sur niveau(x) vers le bas
Polygon-based texture mapping for cyber city 3D building models / F. Tsai in International journal of geographical information science IJGIS, vol 21 n° 9-10 (october 2007)
[article]
Titre : Polygon-based texture mapping for cyber city 3D building models Type de document : Article/Communication Auteurs : F. Tsai, Auteur ; H.C. Lin, Auteur Année de publication : 2007 Article en page(s) : pp 965 - 981 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] bati
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] mosaïque d'images
[Termes IGN] photographie numérique
[Termes IGN] polygone
[Termes IGN] prise de vue terrestre
[Termes IGN] réalité virtuelle
[Termes IGN] texturage
[Termes IGN] texture d'imageRésumé : (Auteur) The three-dimensional building model is one of the most important components in a cyber city implementation. Currently, however, most building models do not have sufficient and accurate texture information. The lack of texture not only makes 3D building models less realistic in visualization, it may also fail to provide needed information in intricate applications. This study developed a polygon-based texture mapping system to produce near photo-realistic texture mappings for 3D building models. Textures of building exteriors were generated from mosaics of close-range photographs acquired with commodity digital cameras. The developed system integrated multiple digital photographs to create texture mosaics that were continuous in geometric outlines and smooth in colour shadings, and correctly mapped them onto corresponding building model façades. A test example demonstrated that the resultant building model had more complete and accurate texture features as well as a near-photo-realistic appearance. Copyright Taylor & Francis Numéro de notice : A2007-552 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810601034929 En ligne : https://doi.org/10.1080/13658810601034929 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28915
in International journal of geographical information science IJGIS > vol 21 n° 9-10 (october 2007) . - pp 965 - 981[article]Réservation
Réserver ce documentExemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-07061 RAB Revue Centre de documentation En réserve L003 Disponible 079-07062 RAB Revue Centre de documentation En réserve L003 Disponible Regenerating boreal forest structure estimation using SPOT-5 pan-sharpened imagery / A.L. Wunderle in International Journal of Remote Sensing IJRS, vol 28 n°19-20 (October 2007)
[article]
Titre : Regenerating boreal forest structure estimation using SPOT-5 pan-sharpened imagery Type de document : Article/Communication Auteurs : A.L. Wunderle, Auteur ; Steven E. Franklin, Auteur ; X.G. Guo, Auteur Année de publication : 2007 Article en page(s) : pp 4351 - 4364 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] Alberta (Canada)
[Termes IGN] analyse en composantes principales
[Termes IGN] complexité
[Termes IGN] forêt boréale
[Termes IGN] habitat animal
[Termes IGN] image SPOT 5
[Termes IGN] Mammalia
[Termes IGN] pansharpening (fusion d'images)
[Termes IGN] régression
[Termes IGN] texture d'imageRésumé : (Auteur) Forested stand structure is an important target variable within the fields of wildlife ecology. Remote sensing has often been suggested as a viable alternative to time consuming field and aerial investigations to determine forest structural attributes. In this study, 44 stands of recently harvested, regenerating, and old growth forest within the Foothills Model Forest in west-central Alberta were selected to test the ability of pan-sharpened SPOT-5 spectral response to classify stand structure. For each stand, a Structural Complexity Index (SCI) was calculated from field data using principal components analysis. To complement the spectral response data set and further increase accuracy, the normalized difference moisture index (NDMI) and three window sizes (55, 1111, and 2525) of first- (mean and standard deviation) and second-order (homogeneity, entropy, contrast, and correlation) textural measures were calculated over the pan-sharpened image. Stepwise multivariate regression analysis was used to determine the best explanatory model of the SCI using the spectral and textural data. The NDMI, first-order standard deviation and second-order correlation texture measures were better able to explain differences in SCI among the 44 forest stands (r2 = 0.79). The most appropriate window size for the texture measures was 55 indicating that this is a measure only detectable at a very high spatial resolution. The resulting classified SCI values were comparable to the actual field level SCI (r2 = 0.74, p = 0.01) and were limited by the strong variability within stands. Future research may find this measure useful either as a separate parameter or as an indicator of forest age for use in wildlife habitat modelling. Copyright Taylor & Francis Numéro de notice : A2007-447 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160701244849 En ligne : https://doi.org/10.1080/01431160701244849 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28810
in International Journal of Remote Sensing IJRS > vol 28 n°19-20 (October 2007) . - pp 4351 - 4364[article]Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-07111 RAB Revue Centre de documentation En réserve L003 Disponible Temporal change in the landscape erosion pattern in the Yellow River basin / W. Siyuan in International journal of geographical information science IJGIS, vol 21 n° 9-10 (october 2007)
[article]
Titre : Temporal change in the landscape erosion pattern in the Yellow River basin Type de document : Article/Communication Auteurs : W. Siyuan, Auteur ; L. Jingshi, Auteur ; Y. Cunjian, Auteur Année de publication : 2007 Article en page(s) : pp 1077 - 1092 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] agriculture
[Termes IGN] bassin hydrographique
[Termes IGN] Chine
[Termes IGN] déboisement
[Termes IGN] détection de changement
[Termes IGN] érosion hydrique
[Termes IGN] Fleuve jaune (Chine)
[Termes IGN] gestion durable
[Termes IGN] image Landsat-TM
[Termes IGN] impact sur l'environnement
[Termes IGN] urbanisation
[Termes IGN] utilisation du solRésumé : (Auteur) Using Landsat TM data from 1995 and 2000, changes in the landscape erosion pattern of the Yellow River Basin, China were analysed. The aim was to improve our understanding of soil-erosion change so that sustainable land use could be established. First, a soil-erosion intensity index model was developed to study soil-erosion intensity change in the study area. Over the 5 years, the areas of weak erosion, moderate erosion, severe erosion, and very severe erosion all increased. The area of weak erosion increased dramatically by 7.94*105 ha, and areas of slight erosion and acute erosion decreased by 1.93*106 ha and 4.50*104 ha, respectively. The results show that while the intensity of soil erosion has gradually been decreasing as a whole, in some regions the soil erosion is becoming more severe. Based on landscape indices, the pattern of changes in soil erosion over the past 5 years was analysed. The changes in landscape pattern of soil erosion resulted from human activities. Analysis showed that human impact increases fragmentation, having three major effects on landscape pattern, reduction in patch area, variations in patch shape, and changes in spatial pattern. In the study area, population growth, farming, governmental policy and forest degradation are the major factors causing soil erosion change over a 5-year period. Copyright Taylor & Francis Numéro de notice : A2007-557 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810701228645 En ligne : https://doi.org/10.1080/13658810701228645 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28920
in International journal of geographical information science IJGIS > vol 21 n° 9-10 (october 2007) . - pp 1077 - 1092[article]Réservation
Réserver ce documentExemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-07061 RAB Revue Centre de documentation En réserve L003 Disponible 079-07062 RAB Revue Centre de documentation En réserve L003 Disponible Early fire detection using non-linear multi-temporal prediction of thermal imagery / A. Koltunov in Remote sensing of environment, vol 110 n° 1 (14/09/2007)
[article]
Titre : Early fire detection using non-linear multi-temporal prediction of thermal imagery Type de document : Article/Communication Auteurs : A. Koltunov, Auteur ; S.L. Ustin, Auteur Année de publication : 2007 Article en page(s) : pp 18 - 28 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] analyse diachronique
[Termes IGN] anomalie thermique
[Termes IGN] détection de changement
[Termes IGN] image multitemporelle
[Termes IGN] image Terra-MODIS
[Termes IGN] image thermique
[Termes IGN] incendie de forêt
[Termes IGN] prévention des risquesRésumé : (Auteur) This paper presents a sub-pixel thermal anomaly detection method based on predicting background pixel intensities using a non-linear function of a plurality of past images of the inspected scene. At present, the multitemporal approach to thermal anomaly detection is in its early development stage. In case of space-borne surveillance the multitemporal detection is complicated by both spatial and temporal variability of background surface properties, weather influences, viewing geometries, sensor noise, residual misregistration, and other factors. We use the problem of fire detection and the MODIS data to demonstrate that advanced multitemporal detection methods can potentially outperform the operationally used optimized contextual algorithms both under morning and evening conditions. Copyright Elsevier Numéro de notice : A2007-348 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2007.02.010 En ligne : https://doi.org/10.1016/j.rse.2007.02.010 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28711
in Remote sensing of environment > vol 110 n° 1 (14/09/2007) . - pp 18 - 28[article]Automatic extraction of main road centrelines from high resolution satellite imagery using hierarchical grouping / Xiangyun Hu in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 9 (September 2007)
[article]
Titre : Automatic extraction of main road centrelines from high resolution satellite imagery using hierarchical grouping Type de document : Article/Communication Auteurs : Xiangyun Hu, Auteur ; V. Tao, Auteur Année de publication : 2007 Article en page(s) : pp 1049 - 1056 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] approche hiérarchique
[Termes IGN] axe médian
[Termes IGN] extraction du réseau routier
[Termes IGN] image à résolution métrique
[Termes IGN] image Ikonos
[Termes IGN] image Quickbird
[Termes IGN] zone urbaineRésumé : (Auteur) Automatic road centerline extraction from high-resolution satellite imagery has gained considerable interest recently due to the increasing availability of commercial high-resolution satellite images. In this paper, a hierarchical grouping strategy is proposed to automatically extract main road centerlines from high-resolution satellite imagery. Here hierarchical grouping means that, instead of grouping all segments at once, the selective segments are grouped gradually, and multiple clues are closely integrated into the procedure. By this means, the computational cost can be reduced significantly. Through the stepwise grouping, the detected fragmented line segments eventually form the long main road lines. The proposed method has been tested and validated using several Ikonos and QuickBird images both in open areas and build-up urban environments. The results demonstrate its robustness and viability on extracting salient main road centerlines. Copyright ASPRS Numéro de notice : A2007-413 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=4c44af1158a711e37 [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28776
in Photogrammetric Engineering & Remote Sensing, PERS > vol 73 n° 9 (September 2007) . - pp 1049 - 1056[article]Carte de consensualité / A. Quirin in Revue internationale de géomatique, vol 17 n° 3-4 (septembre 2007 – février 2008)PermalinkCartographie des zones de haute montagne : essais de cartographie numérique des rochers / Loïc Gondol in Le monde des cartes, n° 193 (septembre - novembre 2007)PermalinkDerniers développements en télédétection hyperspectrale / V. Carrere in Photo interprétation, vol 43 n° 3 (Septembre 2007)PermalinkDetection and substitution of clouds/hazes and their cast shadows on Ikonos images / Dong Lu in International Journal of Remote Sensing IJRS, vol 28 n°17-18 (September 2007)PermalinkEstimation of vegetation parameter for modelling soil erosion using linear spectral mixture analysis of Landsat ETM data / A.M. DE Asis in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 4 (September 2007)PermalinkHigher order vagueness in geographical information: empirical geographical population of type N fuzzy sets / P. Fischer in Geoinformatica, vol 11 n° 3 (September - November 2007)PermalinkHighlighting space-time patterns: effective visual encoding for interactive decision-making / Mike Sips in International journal of geographical information science IJGIS, vol 21 n° 8 (september 2007)Permalinkvol 17 n° 3-4 - septembre 2007 – février 2008 - Informations géographiques : structuration, extraction et utilisation [sélection de contributions du colloque international de géomatique et d'analyse spatiale, Strasbourg, 11-13 septembre 2006] (Bulletin de Revue internationale de géomatique) / Christiane WeberPermalinkLa morphologie mathématique binaire pour l'extraction automatique des bâtiments dans les images THRS / David Sheeren in Revue internationale de géomatique, vol 17 n° 3-4 (septembre 2007 – février 2008)PermalinkA new model for cloud tracking and analysis on satellite images / E. Guilbert in Geoinformatica, vol 11 n° 3 (September - November 2007)Permalink