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Urban object reconstruction using airborne laser elevation image and aerial image / K. Fujii in IEEE Transactions on geoscience and remote sensing, vol 40 n° 10 (October 2002)
[article]
Titre : Urban object reconstruction using airborne laser elevation image and aerial image Type de document : Article/Communication Auteurs : K. Fujii, Auteur ; T. Arikawa, Auteur Année de publication : 2002 Article en page(s) : pp 2234 - 2240 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] classification dirigée
[Termes IGN] détection du bâti
[Termes IGN] image aérienne
[Termes IGN] modélisation 3D
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] superposition d'images
[Termes IGN] télémétrie laser aéroporté
[Termes IGN] texture d'image
[Termes IGN] transformation de HoughRésumé : (Auteur) Creating three dimensional (3D) models of a real urban objects is an important goal in a wide variety of applications. This paper describes a method that utilizes airborne laser elevation images and aerial images for the 3-D reconstruction of urban objects. Our modeling approach uses the vertical geometric pattern analysis of elevation images. These pattern correspond to object contours and, thus enable the extraction of the object. In addition, to provide realistic textured details, textures are cut from aerial images and mapped onto 3-D models. Our textures-mapping approach can avoid geometry mismatching and enable the automatic registration to determine the most reliable correspondence between projected outlines of 3-D models and contours of real objects shown in aerial images. Edge pairs, which are matched with projected outlines, are detected from aerial images. In order to minimize mismatching, we apply the voting technique based on the generalized Hough transform. Experimental results show that 3-D reconstruction of urban objects generally successful. Numéro de notice : A2002-319 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2002.802460 En ligne : https://doi.org/10.1109/TGRS.2002.802460 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22230
in IEEE Transactions on geoscience and remote sensing > vol 40 n° 10 (October 2002) . - pp 2234 - 2240[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-02101 RAB Revue Centre de documentation En réserve L003 Disponible Semi-automated extraction of rivers from digital imagery / C.R. Dillabaugh in Geoinformatica, vol 6 n° 3 (September - November 2002)
[article]
Titre : Semi-automated extraction of rivers from digital imagery Type de document : Article/Communication Auteurs : C.R. Dillabaugh, Auteur ; K.O. Niemann, Auteur ; D.E. Richardson, Auteur Année de publication : 2002 Article en page(s) : pp 263 - 284 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] détection de contours
[Termes IGN] extraction semi-automatique
[Termes IGN] image à haute résolution
[Termes IGN] image numérique
[Termes IGN] image panchromatique
[Termes IGN] image SPOT
[Termes IGN] réseau hydrographique
[Termes IGN] rivièreRésumé : (Auteur) The manual production of vector maps from digital imagery can be a time consuming and costly process. Developing tools to automate this task for specific features, such as roads, has become an important research topic. The purpose of this paper was to present a technique for the semi-automatic extraction of multiple pixel width river features appearing in high resolution satellite imagery. This was accomplished using a two stage, multi resolution procedure. Initial river extraction was performed on low resolution (SPOT multispectral 20 m) imagery. The results from this low resolution extraction were then refined on higher resolution (KFA 1000. panchromatic. 5m) imagery to produce a detailed outline of the channel banks. To perform low resolution extraction a cost surface was generated to represent the combined local evidence of the presence of a river feature. The local evidence of a river was evaluated based on the results of a number of simple operators. Then, with user specified start and end points for the network, rivers were extracted by performing a least cost path search across this surface using the A* algorithm. The low resolution results were transferred to the high resolution imagery as closed contours which provided an estimate of the channel banks. These contours were then fit to the channel banks using the dynamic contours (or snakes) technique. Numéro de notice : A2002-205 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1023/A:1019718019825 En ligne : https://doi.org/10.1023/A:1019718019825 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22120
in Geoinformatica > vol 6 n° 3 (September - November 2002) . - pp 263 - 284[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 057-02031 RAB Revue Centre de documentation En réserve L003 Disponible Application of snakes and dynamic programming optimisation technique in modeling of buildings in informal settlement areas / H. Ruther in ISPRS Journal of photogrammetry and remote sensing, vol 56 n° 4 (July - August 2002)
[article]
Titre : Application of snakes and dynamic programming optimisation technique in modeling of buildings in informal settlement areas Type de document : Article/Communication Auteurs : H. Ruther, Auteur ; H.M. Martine, Auteur ; E.G. Mtalo, Auteur Année de publication : 2002 Article en page(s) : pp 269 - 282 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] contour
[Termes IGN] détection du bâti
[Termes IGN] modèle mathématique
[Termes IGN] modèle numérique de surface
[Termes IGN] orthophotographie
[Termes IGN] photographie aérienne
[Termes IGN] processeurRésumé : (Auteur) This paper presents a novel approach to semiautomatic building extraction in informal settlement areas from aerial photographs. The proposed approach uses a strategy of delineating buildings by optimising their approximate building contour position. Approximate building contours are derived automatically by locating elevation blobs in digital surface models. Building extraction is then effected by means of the snakes algorithm and the dynamic programming optimisation technique. With dynamic programming, the building contour optimisation problem is realized through a discrete multistage process and solved by the "timedelayed" algorithm, as developed in this work. The proposed building extraction approach is a semiautomatic process, with usercontrolled operations linking fully automated subprocesses. Inputs into the proposed building extraction system are orthoimages and digital surface models, the latter being generated through image matching techniques. Buildings are modeled as "lumps" or elevation blobs in digital surface models, which are derived by altimetric thresholding of digital surface models. Initial windows for building extraction are provided by projecting the elevation blobs centre points onto an orthoimage. In the next step, approximate building contours are extracted from the orthoimage by region growing constrained by edges. Approximate building contours thus derived are inputs into the dynamic programming optimisation process in which final building contours are established. The proposed system is tested on two study areas: Marconi Beam in Cape Town, South Africa, and Manzese in Dar es Salaam, Tanzania. Sixty percent of buildings in the study areas have been extracted and verified and it is concluded that the proposed approach contributes meaningfully to the extraction of buildings in moderately complex and crowded informal settlement areas. Copyright ISPRS Numéro de notice : A2002-169 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/S0924-2716(02)00062-X En ligne : https://doi.org/10.1016/S0924-2716(02)00062-X Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22084
in ISPRS Journal of photogrammetry and remote sensing > vol 56 n° 4 (July - August 2002) . - pp 269 - 282[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-02021 SL Revue Centre de documentation Revues en salle Disponible Object detection using transformed signatures in multitemporal hyperspectral imagery / R. Mayer in IEEE Transactions on geoscience and remote sensing, vol 40 n° 4 (April 2002)
[article]
Titre : Object detection using transformed signatures in multitemporal hyperspectral imagery Type de document : Article/Communication Auteurs : R. Mayer, Auteur ; R. Priest, Auteur Année de publication : 2002 Article en page(s) : pp 831 - 840 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] extraction de traits caractéristiques
[Termes IGN] image hyperspectrale
[Termes IGN] image multitemporelle
[Termes IGN] recouvrement d'images
[Termes IGN] signature spectrale
[Termes IGN] superposition d'imagesRésumé : (Auteur) Changes in atmosphere, ground conditions, and sensor response between multitemporal airborne imaging sessions have limited the use of fixed target hyperspectral libraries in helping to identify targets in heterogeneous (cluttered) backgrounds. This hyperspectral target signature instability has resulted in using anomaly detection algorithms to detect targets in real time applications. The anomaly detection algorithms, however, have not detected targets at sufficiently low false alarm rates. This study examines mathematical transforms of target spectral signatures. Specifically this study uses statistical information regarding background clutter taken from one long-wave infrared (LWIR) hyperspectral (8-12jum) airborne imagery flown on one day, to find the target spectral signature flown on another day (with significantly dissimilar weather conditions). The transforms use overlapping regions in the two data sets but without subpixel level registration. This work analyzes image cubes collected during the November 1998 Hyperspectral Day/Night Radiometry Assessment (HYDRA) data collect. The transformed signatures used in matched filter searches successfully find targets (even targets nearly covered) with low false alarm rates ( Numéro de notice : A2002-178 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2002.1006361 En ligne : https://doi.org/10.1109/TGRS.2002.1006361 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22093
in IEEE Transactions on geoscience and remote sensing > vol 40 n° 4 (April 2002) . - pp 831 - 840[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-02041 RAB Revue Centre de documentation En réserve L003 Disponible 065-02042 RAB Revue Centre de documentation En réserve L003 Disponible Processing of Ikonos imagery for submetre 3D positioning and building extraction / Clive Simpson Fraser in ISPRS Journal of photogrammetry and remote sensing, vol 56 n° 3 (April - June 2002)
[article]
Titre : Processing of Ikonos imagery for submetre 3D positioning and building extraction Type de document : Article/Communication Auteurs : Clive Simpson Fraser, Auteur ; Emmanuel P. Baltsavias, Auteur ; Armin W. Gruen, Auteur Année de publication : 2002 Article en page(s) : pp 177 - 194 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] détection du bâti
[Termes IGN] géopositionnement tridimensionnel
[Termes IGN] image à résolution métrique
[Termes IGN] image Ikonos
[Termes IGN] image panchromatique
[Termes IGN] planimétrie
[Termes IGN] précision décimétrique
[Termes IGN] précision métrique
[Termes IGN] radiométrie
[Termes IGN] restauration d'imageRésumé : (Auteur) An investigation of the application of 1 -m Ikonos satellite imagery to 3D point positioning and building reconstruction is reported. The focus of the evaluation of Geo panchromatic imagery has been upon 3D positioning accuracy, radiometric quality and attributes of the image data for building feature extraction. Following an initial review of characteristics of the Ikonos system, the multi-image dataset employed is described, as is the Melbourne Ikonos testfield. Radiometric quality and image preprocessing aspects are discussed, with attention being given to noise level and artifacts, as well as to methods of image enhancement. The results of 2D and 3D metric accuracy tests using straightforward geometric sensor models are summarised, these showing that planimetric accuracy of 0.3-0.6 m and height accuracy of 0.5-0.9 m are readily achievable with only three to six ground control points. A quantitative and qualitative assessment of the use of stereo Ikonos imagery for generating building models is then provided, using the campus of the University of Melbourne as an evaluation site. The results of this assessment are discussed, these highlighting the high accuracy potential of Ikonos Geo imagery and limitations to be considered in building reconstruction when a comprehensive and detailed modelling is required. Copyright ISPRS Numéro de notice : A2002-094 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/S0924-2716(02)00045-X En ligne : https://doi.org/10.1016/S0924-2716(02)00045-X Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22009
in ISPRS Journal of photogrammetry and remote sensing > vol 56 n° 3 (April - June 2002) . - pp 177 - 194[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-02011 SL Revue Centre de documentation Revues en salle Disponible Cloud tracking by scale space classification / D.P. Mukherjee in IEEE Transactions on geoscience and remote sensing, vol 40 n° 2 (February 2002)PermalinkComparison of GENIE and conventional supervised classifiers for multispectral image feature extraction / N.R. Harvey in IEEE Transactions on geoscience and remote sensing, vol 40 n° 2 (February 2002)PermalinkAnalyse de données acquises par laser aéroporté pour la reconstruction 3D de scènes urbaines / R. Elkharroubi (2002)PermalinkAnalyse d'images aériennes haute résolution pour la reconstruction de scènes urbaines / Matthieu Cord in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 166 (Janvier 2002)PermalinkDéveloppement d'une approche figurale pour la radargrammétrie haute résolution en zone urbaine / Florence Tupin in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 166 (Janvier 2002)PermalinkExtraction 3D de structures industrielles par radargrammétrie haute-résolution / Elisabeth Simonetto in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 166 (Janvier 2002)PermalinkExtraction de structures 3D par interférométrie haute-résolution RAMSES / Olivier Poirel in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 166 (Janvier 2002)PermalinkReconstruction 3D de sites urbains par stéréoscopie optique haute résolution / Hélène Oriot in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 166 (Janvier 2002)PermalinkReconstruction de primitives 3D d'ouvrages architecturaux à partir d'images de distance et d'images optiques / Matthieu Deveau (2002)PermalinkTrois approches pour la construction automatique de modèles 3D de bâtiments en imagerie aérienne haute résolution / Frank Fuchs (2002)PermalinkUse of contour-based DEM for deriving and mapping topographic attributes / H. Mizukoshi in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 1 (January 2002)PermalinkUtilisation métrologique des gamma-images / A. Oulali (2002)PermalinkImage processing of airborne scanning laser altimetry data for improved river flood modelling / D.M. Cobby in ISPRS Journal of photogrammetry and remote sensing, vol 56 n° 2 (December 2001 - March 2002)PermalinkSemi-automatic building extraction: a system on set of predefined building primitives / Eberhard Gülch in GIM international, vol 15 n° 11 (November 2001)PermalinkRock glacier mapping: a method utilizing enhanced TM data and GIS modeling techniques / J.R. Janke in Geocarto international, vol 16 n° 3 (September - November 2001)PermalinkBest-bases feature extraction algorithms for classification of hyperspectral data / Satish Kumar in IEEE Transactions on geoscience and remote sensing, vol 39 n° 7 (July 2001)PermalinkA new search algorithm for feature selection in hyperspectral remote sensing images / S.B. Serpico in IEEE Transactions on geoscience and remote sensing, vol 39 n° 7 (July 2001)PermalinkSeamline detection in colour orthoimage mosaicking by use of twin snakes / M. Kerschner in ISPRS Journal of photogrammetry and remote sensing, vol 56 n° 1 (May - June 2001)PermalinkPermalinkEtude du potentiel de l'imagerie optique et radar pour la mise à jour de cartes anciennes au sud du Cameroun, Volume 1. Mémoire / F. Lemercier (2001)Permalink