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Termes IGN > sciences naturelles > physique > traitement d'image > photogrammétrie > photogrammétrie numérique > modèle numérique de surface
modèle numérique de surfaceSynonyme(s)modèle numérique d'élévation ;modèle numérique d'altitude ;MNE ;MNA ;DEM MNSVoir aussi |
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Phase unwrapping for SAR interferometry based on an ant colony optimization algorithm / Z.Q. Wei in International Journal of Remote Sensing IJRS, vol 29 n°3-4 (February 2008)
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Titre : Phase unwrapping for SAR interferometry based on an ant colony optimization algorithm Type de document : Article/Communication Auteurs : Z.Q. Wei, Auteur ; F. Xu, Auteur ; Ya-Qiu Jin, Auteur Année de publication : 2008 Article en page(s) : pp 711 - 725 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] image radar moirée
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] modèle numérique de surface
[Termes IGN] optimisation par colonie de fourmis
[Termes IGN] résiduRésumé : (Auteur) Phase unwrapping is a key step in extracting digital elevation models (DEMs) from interferometric synthetic aperture radar (InSAR) data. A new two-dimensional (2-D) phase unwrapping algorithm based on ant colony optimization (ACO) is proposed, which is used to configure the shortest path linking all residues in an interferogram. Using an optimization strategy to establish the branch cuts, the unwrapping error can be significantly reduced. Simulated and real InSAR image datasets are studied to evaluate the performance of the algorithm. The results of the simulated datasets show that the errors of the algorithm are lower than some conventional methods, and the results from a real InSAR image dataset demonstrate that the ACO approach has no isolated regions in comparison with some conventional approaches. It indicates that our ACO algorithm is an optional compromise strategy between preferable phase unwrapping precision and time-consuming computation.Copyright Taylor & Francis Numéro de notice : A2008-006 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160701281049 En ligne : https://doi.org/10.1080/01431160701281049 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29001
in International Journal of Remote Sensing IJRS > vol 29 n°3-4 (February 2008) . - pp 711 - 725[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 080-08021 RAB Revue Centre de documentation En réserve L003 Disponible Raster modelling of coastal flooding from sea-level rise / B. Poulter in International journal of geographical information science IJGIS, vol 22 n° 1-2 (february 2008)
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Titre : Raster modelling of coastal flooding from sea-level rise Type de document : Article/Communication Auteurs : B. Poulter, Auteur ; P. Halpin, Auteur Année de publication : 2008 Article en page(s) : pp 167 - 182 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] analyse spatio-temporelle
[Termes IGN] Caroline du Nord (Etats-Unis)
[Termes IGN] changement climatique
[Termes IGN] données lidar
[Termes IGN] érosion côtière
[Termes IGN] modèle mathématique
[Termes IGN] modèle numérique de surface
[Termes IGN] montée du niveau de la mer
[Termes IGN] nivellement directRésumé : (Auteur) As rates of sea-level rise continue to increase due to climate change, land planners require accurate spatial analyses on the extent and timing of coastal flooding and associated hazards. Digital elevation data used to evaluate coastal vulnerability to flooding are available at various horizontal and vertical resolutions. However, the quality of digital elevation models (DEM) used in environmental assessment can significantly affect the detection of topographic features and the magnitude of hydrological processes. We used lidar elevation data in coastal North Carolina, USA to investigate the effects of horizontal resolution and connectivity on the extent and timing of flooding from sea-level rise. We found that the rate and extent of inundation were dependent on horizontal resolution and assumptions made on hydrological connectivity. The variation in flood extent was much larger (760 km2) at low sea-level projections (~0.9 m, 114 km2) due to the effect of hydrological corrections on the coarse-scale DEM and topographic complexity at low elevations. Lidar elevation data provide a significant advance in mapping potential coastal flooding, but the extent and timing of inundation are sensitive to horizontal resolution and the modelling of hydrological connectivity. Copyright Taylor & Francis Numéro de notice : A2008-106 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810701371858 En ligne : https://doi.org/10.1080/13658810701371858 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29101
in International journal of geographical information science IJGIS > vol 22 n° 1-2 (february 2008) . - pp 167 - 182[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-08011 RAB Revue Centre de documentation En réserve L003 Disponible 079-08012 RAB Revue Centre de documentation En réserve L003 Disponible WinBasin: using improved algorithms and the GIS technique for automated watershed modelling analysis from digital elevation models / W. Lin in International journal of geographical information science IJGIS, vol 22 n° 1-2 (february 2008)
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Titre : WinBasin: using improved algorithms and the GIS technique for automated watershed modelling analysis from digital elevation models Type de document : Article/Communication Auteurs : W. Lin, Auteur ; W. Chou, Auteur ; et al., Auteur Année de publication : 2008 Article en page(s) : pp 47 - 69 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] analyse spatiale
[Termes IGN] bassin hydrographique
[Termes IGN] données vectorielles
[Termes IGN] géomorphologie locale
[Termes IGN] ligne de partage des eaux
[Termes IGN] modèle numérique de surface
[Termes IGN] système d'information géographiqueRésumé : (Auteur) WinBasin is a GIS-based watershed analysis system that can automatically calculate depressionless flow directions, delineate watersheds/sub-watersheds, extract realistic drainage networks, and calculate geomorphological indices and hydrological responses from digital elevation models. Several improved algorithms coupled with GIS techniques were proposed for automated watershed analysis. First, different from depression fill-up treatment methods, the depression watershed method coupled with the improved fuzzy c-mean algorithm allows the depression outlet location and flow directions to be determined. Second, by using the GIS-based point-and-click interface coupled with outlet-tracing and headwater-tracing algorithms, watersheds with user-specified outlets and realistic drainage networks can be easily extracted based on the derived flow directions. The analysed results can be exported to vector format for linkage with other GIS software. Third, the geomorphological indices and hydrological responses (width function and geomorphological instantaneous unit hydrograph) in a watershed can also be instantly derived based on the proposed algorithms and the GIS technique. Copyright Taylor & Francis Numéro de notice : A2008-104 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810701300121 En ligne : https://doi.org/10.1080/13658810701300121 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29099
in International journal of geographical information science IJGIS > vol 22 n° 1-2 (february 2008) . - pp 47 - 69[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-08011 RAB Revue Centre de documentation En réserve L003 Disponible 079-08012 RAB Revue Centre de documentation En réserve L003 Disponible Automatic registration of optical images, a stake for future missions: Application to ortho-rectification, time series and mosaic products / Simon Baillarin (2008)
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Titre : Automatic registration of optical images, a stake for future missions: Application to ortho-rectification, time series and mosaic products Type de document : Article/Communication Auteurs : Simon Baillarin, Auteur ; Patrick Gigord, Auteur ; Olivier Hagolle, Auteur Editeur : New York : Institute of Electrical and Electronics Engineers IEEE Année de publication : 2008 Conférence : IGARSS 2008, International Geoscience And Remote Sensing Symposium 07/07/2008 11/07/2008 Boston Massachusetts - Etats-Unis Proceedings IEEE Importance : n° 4779194 Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] image optique
[Termes IGN] modèle numérique de surface
[Termes IGN] mosaïquage d'images
[Termes IGN] orthorectification
[Termes IGN] superposition d'imagesRésumé : (auteur) Today, new earth observation missions are designed from satellite to ground segment to best fit the end-user needs while reducing the overall costs and complexity. Furthermore, an efficient use of high resolution image data is only possible if its location is accurate enough. The accuracy of the image location model depends on the knowledge of platform and orbital parameters (instruments calibration, satellite orbit and pointing) and also of the ground elevation (Digital Elevation Model). Good accuracy can be ensured by stringent requirements on onboard equipments (GPS, gyro, ...) but also by appropriate ground processing which is easier and less expensive to setup. This paper describes and evaluates an automatic method to improve location models during ground processing. This method has been implemented and tested at CNES for current and new missions (such as SPOT/FORMOSAT image ortho-rectification, Pleiades-HR images mosaicking or Venμs images time-series generation). These results must be considered for future missions designing. Numéro de notice : C2008-033 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1109/IGARSS.2008.4779194 En ligne : https://doi.org/10.1109/IGARSS.2008.4779194 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102627
Titre : Building reconstruction from a single DEM Type de document : Article/Communication Auteurs : Florent Lafarge, Auteur ; Xavier Descombes, Auteur ; Josiane Zerubia, Auteur ; Marc Pierrot-Deseilligny , Auteur
Editeur : New-York : IEEE Computer society Année de publication : 2008 Conférence : CVPR 2008, IEEE Conference on Computer Vision and Pattern Recognition 23/06/2008 28/06/2008 Anchorage Alaska - Etats-Unis Proceedings IEEE Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] algorithme RJMCMC
[Termes IGN] détection du bâti
[Termes IGN] modèle numérique de surface
[Termes IGN] reconstruction 3D du bâtiRésumé : (auteur) We present a new approach for building reconstruction from a single Digital Elevation Model (DEM). It treats buildings as an assemblage of simple urban structures extracted from a library of 3D parametric blocks (like a LEGO reg set). This method works on various data resolutions such as 0.7 m satellite and 0.1 m aerial DEMs and allows us to obtain 3D representations with various levels of detail. First, the 2D supports of the urban structures are extracted either interactively or automatically. Then, 3D blocks are placed on the 2D supports using a Gibbs model. A Bayesian decision finds the optimal configuration of 3D blocks using a RJMCMC sampler. Experimental results on complex buildings and dense urban areas are presented using data at various resolutions. Numéro de notice : C2008-038 Affiliation des auteurs : MATIS+Ext (1993-2011) Autre URL associée : vers HAL Thématique : IMAGERIE/INFORMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1109/CVPR.2008.4587778 En ligne : https://doi.org/10.1109/CVPR.2008.4587778 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=103423 Detection, segmentation and characterisation of vegetation in high-resolution aerial images for 3D city modelling / Corina Iovan (2008)
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PermalinkEntwicklung eines Qualitätsmodells für die Generierung von digitalen Gelandemodellen aus airborne Laser scanning / Hans Jürg Luthy (2008)
PermalinkPermalinkA new computationally efficient stochastic approach for building reconstruction from satellite data / Florent Lafarge (2008)
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PermalinkGeometric accuracy assessment of QuickBird basic imagery using different operational approaches / M. Aguilar in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 12 (December 2007)
PermalinkA theoretical approach to modeling the accuracy assessment of digital elevation models / F. Aguilar in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 12 (December 2007)
PermalinkDEM control in Arctic Alaska with Icesat laser altimetry / D.K. Atwood in IEEE Transactions on geoscience and remote sensing, vol 45 n° 11 Tome 2 (November 2007)
PermalinkDigital surface models from high-resolution satellite imagery / J. Poon in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 11 (November 2007)
PermalinkAn elevation of void-filling interpolation methods for SRTM data / H.I. Reuter in International journal of geographical information science IJGIS, vol 21 n° 9-10 (october 2007)
PermalinkCartographic product evaluation: an operational system with different checking levels / Nesrine Chehata in Traitement du signal, vol 24 n° 5 (Octobre 2007)
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