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Detection of unregistered buildings for updating 2D databases / Nicolas Champion (01/12/2009)
contenu dans Detection of unregistered buildings for updating 2D databases / European Spatial Data Research EuroSDR (2009)
Titre : Detection of unregistered buildings for updating 2D databases Type de document : Chapitre/Contribution Auteurs : Nicolas Champion , Auteur Editeur : Dublin : European Spatial Data Research EuroSDR Année de publication : 01/12/2009 Importance : pp 7 - 40 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] analyse comparative
[Termes IGN] base de données vectorielles
[Termes IGN] détection de changement
[Termes IGN] détection du bâti
[Termes IGN] données localisées 2D
[Termes IGN] mise à jour de base de donnéesRésumé : (Auteur) In the past few years, the production of 2D topographic databases has been completed in most industrialised countries. Presently, most efforts in the National Mapping and Cadastral Agencies (NMCAs) are devoted to the update of such databases. Because the update process is generally carried out manually by visual inspection of orthophotos, it is time-consuming and expensive. The development of semi-automatic systems is, thus, of high interest for NMCAs. The current deficits in automation and the lack of expertise within NMCAs have driven the EuroSDR (European Spatial Data Research - http://www.eurosdr.net) to launch a project in this topic. The aim of the project "Detection of unregistered buildings for updating 2D databases" is to evaluate the feasibility of semi-automatically detecting changes in a 2D building vector database from optical imagery or LIDAR. Three specific sub-topics are investigated in detail: firstly, the impact of methodology; secondly, the impact of the type and spatial resolution of input data; lastly, the impact of the complexity of the scene, especially with respect to topography and land use. A comparison of algorithms representative of the current state-of-the-art in the field of change detection is performed. In this report, we describe the three test areas used in the project, the methodology used for assessing and comparing the methods, and the results that have been obtained with the four different approaches. The results are thoroughly analysed and a discussion enables to bring out conclusions and promising directions to follow for building an optimal operational system in the future. Numéro de notice : H2009-001 Affiliation des auteurs : MATIS (1993-2011) Thématique : IMAGERIE Nature : Chapître / contribution DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65898 Effects of Lidar post-spacing and DEM resolution to mean slope estimation / T. Edwin in International journal of geographical information science IJGIS, vol 23 n°9-10 (september 2009)
[article]
Titre : Effects of Lidar post-spacing and DEM resolution to mean slope estimation Type de document : Article/Communication Auteurs : T. Edwin, Auteur ; M.E. Hodgson, Auteur Année de publication : 2009 Article en page(s) : pp 1277 - 1295 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] analyse de sensibilité
[Termes IGN] bassin hydrographique
[Termes IGN] Caroline du Sud (Etats-Unis)
[Termes IGN] densité des points
[Termes IGN] données lidar
[Termes IGN] estimation de précision
[Termes IGN] modèle numérique de surface
[Termes IGN] pente
[Termes IGN] pouvoir de résolution géométriqueRésumé : (Auteur) This paper examines the effect of scale (exhibited by spatial sampling) in modeling mean slope from lidar data using two representations of scale: lidar posting density (i.e. post-spacing) and DEM resolution (i.e. cell size). The study areas selected include six small (i.e. approximately 3 km2) urban drainage basins in Richland County, SC, USA, which share similar hydrologic characteristics. This research spatially sampled an airborne lidar dataset collected in 2000 at a 2 m nominal posting density to simulate lidar posting density at various post-spacings, from 2 m through 10 m. DEMs were created from the lidar observations at a corresponding cell size using spatial interpolation. Finally, using these DEMs, a sensitivity analysis between modeled terrain slope and lidar post-spacing was conducted. Results of the sensitivity analyses showed that the deviation between mean slope and modeled mean slope decreases with finer posting density and DEM resolution. The relationship of mean slope with varying cell sizes and post-spacing suggests a linear and a logarithmic function, respectively, for all study areas. More importantly, cell size has a greater effect on mean slope than lidar posting density. Implications of these results for lumped hydrologic modeling are then postulated. Copyright Taylor & Francis Numéro de notice : A2009-389 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810802344127 En ligne : https://doi.org/10.1080/13658810802344127 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30019
in International journal of geographical information science IJGIS > vol 23 n°9-10 (september 2009) . - pp 1277 - 1295[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-09061 RAB Revue Centre de documentation En réserve L003 Disponible A comparative analysis of DEM-based models to estimate the solar radiation in mountainous terrain / J. Ruiz-Arias in International journal of geographical information science IJGIS, vol 23 n° 7-8 (july 2009)
[article]
Titre : A comparative analysis of DEM-based models to estimate the solar radiation in mountainous terrain Type de document : Article/Communication Auteurs : J. Ruiz-Arias, Auteur ; J. Tovar-Pescador, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : pp 1049 - 1076 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] bassin méditerranéen
[Termes IGN] éclairement énergétique
[Termes IGN] modèle numérique de terrain
[Termes IGN] montagne
[Termes IGN] rayonnement solaire
[Termes IGN] système d'information géographiqueRésumé : (Auteur) Daily solar radiation estimates of four up-to-date solar radiation models (Solar Analyst, r.sun, SRAD and Solei-32), based on a digital elevation model (DEM), have been evaluated and compared in a Mediterranean environment characterized by a complex topography. The models' estimates were evaluated against 40 days of radiometric data collected in 14 stations. Analyzed sky conditions ranged from completely overcast conditions to clear skies. Additionally, the role of the spatial resolution of the DEM has been evaluated through the use of two different resolutions: 20 and 100 m. Results showed that, under clear-sky conditions, the daily solar radiation variability in the study area may be reasonably estimated with mean bias errors under 10% and root mean square error values of around 15%. On the other hand, results proved that the reliability of the estimates substantially decreases under overcast conditions for some of the solar radiation models. Regarding the role of the DEM spatial resolution, results suggested that the reliability of the estimates for complex topography areas under clear-sky conditions improves using a higher spatial resolution. Numéro de notice : A2009-346 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810802022806 En ligne : https://doi.org/10.1080/13658810802022806 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29976
in International journal of geographical information science IJGIS > vol 23 n° 7-8 (july 2009) . - pp 1049 - 1076[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-09051 RAB Revue Centre de documentation En réserve L003 Disponible 079-09052 RAB Revue Centre de documentation En réserve L003 Disponible Digital documentation 2009: a report on the Glasgow conference / Gordon Petrie in Geoinformatics, vol 12 n° 4 (01/06/2009)
[article]
Titre : Digital documentation 2009: a report on the Glasgow conference Type de document : Article/Communication Auteurs : Gordon Petrie, Auteur Année de publication : 2009 Article en page(s) : pp 24 - 26 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] architecture
[Termes IGN] patrimoine archéologique
[Termes IGN] restitution
[Termes IGN] télémétrie laser terrestreRésumé : (Auteur) The second international conference concerned with the digital documentation of historic building and other heritage structures and sites was held in Glasgow, Scotland on 22nd and 23rd April 2009. The conference was organised by the Digital Design Studio of the Glasgow School of Art in association with the conference sponsors - Historic Scotland, Leica Geosystems, Hexagon metrology, the CyArk Foundation and Glasgow City Council. Copyright GEOinformatics Numéro de notice : A2009-202 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29832
in Geoinformatics > vol 12 n° 4 (01/06/2009) . - pp 24 - 26[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 262-09041 SL Revue Centre de documentation Revues en salle Disponible Crack measurement : development, testing and applications of an automatic image-based algorithm / L. Barazetti in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 3 (May - June 2009)
[article]
Titre : Crack measurement : development, testing and applications of an automatic image-based algorithm Type de document : Article/Communication Auteurs : L. Barazetti, Auteur ; Marco Scaioni, Auteur Année de publication : 2009 Article en page(s) : pp 285 - 296 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] analyse d'image numérique
[Termes IGN] auscultation d'ouvrage
[Termes IGN] déformation d'édifice
[Termes IGN] détection de cible
[Termes IGN] photogrammétrie architecturale
[Termes IGN] précision des mesures
[Termes IGN] profil en long
[Termes IGN] repère de référence
[Termes IGN] séquence d'images
[Termes IGN] surveillance d'ouvrageRésumé : (Auteur) The paper presents an Image-based Method for Crack Analysis (IMAC) which is capable of processing a sequence of digital imagery to perform a twofold task:(i) the extraction of crack borders and the evaluation of its width across the longitudinal profile; (ii) the measurement of crack deformations (width, sliding and rotation). Here both problems are solved in 2D, but an extension to 3D is also addressed. The equipment needed to apply the method is made up of a digital camera (or a still video-camera in case a high frequency in data acquisition is necessary), an orientation frame which establishes the object reference system, a pair of signalized supports to be placed in a permanent way on both sides of the crack to compute deformations ; however, permanent targets are mandatory only for case (ii). The measurement process is carried out in a fully automatic way, a fact also that makes this technique highly operational for unskilled people in engineering surveying or photogrammetry. The accuracy of the proposed method, evaluated in experimental tests adopting different consumer digital cameras, is about + 5-20 um, like the accuracy of most deformometers, but with the advantage of automation and of augmented achievable information ; moreover, the image sequence can be archived and off-line measurements could be performed at any time. Numéro de notice : A2009-247 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2009.02.004 En ligne : https://doi.org/10.1016/j.isprsjprs.2009.02.004 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29877
in ISPRS Journal of photogrammetry and remote sensing > vol 64 n° 3 (May - June 2009) . - pp 285 - 296[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-09031 SL Revue Centre de documentation Revues en salle Disponible Génération de modèles numériques de terrain par fusion de données lidar et image / Frédéric Bretar in Traitement du signal, vol 26 n° 2 (2009-2)PermalinkA photogrammetric surveying method for field applications / D. Rieke-Zapp in Photogrammetric record, vol 24 n° 125 (March - May 2009)PermalinkStandards in practice: part 10 CITYGML / Huibert-Jan Lekkerkerk in Geoinformatics, vol 12 n° 3 (01/03/2009)PermalinkTechnologie & plus = Technology & more (Bulletin de Technology & more) / TrimblePermalinkAccuracy assessment of digital elevation models based on approximation theory / P. Hu in Photogrammetric Engineering & Remote Sensing, PERS, vol 75 n° 1 (January 2009)PermalinkBuilding footprint database improvement for 3D reconstruction : a direction aware split and merge approach / Bruno Vallet (2009)PermalinkComputation of the third-order partial derivatives from a digital elevation model / Igor V. Florinsky in International journal of geographical information science IJGIS, vol 23 n° 1-2 (january 2009)PermalinkDetection of buildings at airport sites using images and lidar data and a combination of various methods / N. Demir (2009)PermalinkGeneration of a spatial information system for architecture with laserscanning data / Luigi Fregonese (2009)PermalinkNew integration approach of photogrammetric and LIDAR techniques for architectural survey / Francesco Nex (2009)PermalinkLes structures archéologiques et les peuplements de la forêt domaniale de Haye analysés par laser aéroporté / Jérôme Bock in Rendez-vous techniques, n° 20 (mai 2008)PermalinkDe la maquette 3D au SIG 3D pour la gestion du patrimoine archéologique / M. Koehl in Géomatique expert, n° 64 (01/09/2008)PermalinkMétrologie appliquée à l'expérience CMS au CERN : 10 années de photogrammétrie numérique / J.F. Fuchs in XYZ, n° 116 (septembre - novembre 2008)Permalink3D noise mapping in urban areas / Jantien E. Stoter in International journal of geographical information science IJGIS, vol 22 n° 8-9 (august 2008)PermalinkEffects of DEM resolution and source on soil erosion modelling: a case study using the WEPP model / J.X. Zhang in International journal of geographical information science IJGIS, vol 22 n° 8-9 (august 2008)PermalinkTerrestrial laser scan survey and 3D TIN model construction of urban buildings in a geospatial database / T. Tang in Geocarto international, vol 23 n° 4 (August - September 2008)PermalinkSimple method for cost-effective informal building monitoring / C. Psaltis in SaLIS Surveying and land information science, vol 68 n° 2 (June 2008)PermalinkLe CIPA, représentant international des applications architecturales / Pierre Grussenmeyer in Géomètre, n° 2048 (mai 2008)PermalinkASTER DEMs for geomatic and geoscientific applications: a review / Thierry Toutin in International Journal of Remote Sensing IJRS, vol 29 n° 7 (April 2008)PermalinkTechnologie & plus = Technology & more (Bulletin de Technology & more) / TrimblePermalink