Centre de documentation
scientifique

Road junction extraction from high-resolution aerial imagery / M. Ravanbakhsh in Photogrammetric record, vol 23 n° 124 (December 2008 - February 2009)  

Public [article]  inPhotogrammetric record > vol 23 n° 124 (December 2008 - February 2009) . - pp 405 - 423 Titre : Road junction extraction from high-resolution aerial imagery Type de document : Article/Communication Auteurs : M. Ravanbakhsh, Auteur ; Christian Heipke, Auteur ; Kian Pakzad, Auteur Année de publication : 2008 Conférence : ISPRS 2007, High-Resolution Earth Imaging for Geospatial Information workshop 29/05/2007 01/06/2007 Hanovre Allemagne Article en page(s) : pp 405 - 423 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] carrefour [Termes IGN] extraction automatique [Termes IGN] extraction du réseau routier [Termes IGN] image aérienne [Termes IGN] objet géographique zonal [Termes IGN] réseau routier Résumé : (Auteur) Road junctions are important components of a road network. However, they are usually not explicitly modelled in existing road extraction approaches. In this research, road junctions are modelled in detail as area objects and an approach is proposed for their automatic extraction through the use of an existing geospatial database. Prior knowledge derived from a topographic geospatial database is used to facilitate the extraction. A new snake-based approach is proposed that makes use of the "ziplock snake" concept and whose external force is a combination of the gradient vector flow (GVF) force and the balloon force in order to delineate the junction border. Road arm extraction results provide fixed boundary conditions for the proposed snake. The approach was tested using aerial black-and-white Digital Mapping Camera (DMC) ortho-images of 0·1 m ground resolution taken from suburban and rural areas. The results obtained demonstrate the validity of this approach. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2008-420 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2008.00496.x En ligne : https://doi.org/10.1111/j.1477-9730.2008.00496.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29491 [article]

vol 58 n° 3-4 - January - June 2004 - Integration of geodata and imagery for automated refinement and update of spatial databases (Bulletin de ISPRS Journal of photogrammetry and remote sensing) / Christian Heipke  

Public [n° ou bulletin]  est un bulletin de ISPRS Journal of photogrammetry and remote sensing / International society for photogrammetry and remote sensing (1980 -) (1990 -)   Titre : vol 58 n° 3-4 - January - June 2004 - Integration of geodata and imagery for automated refinement and update of spatial databases Type de document : Périodique Auteurs : Christian Heipke, Éditeur scientifique ; Kian Pakzad, Éditeur scientifique ; F. Willrich, Éditeur scientifique ; A. Peled, Éditeur scientifique Année de publication : 2004 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie terrestre Numéro de notice : 081-0401 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Numéro de périodique En ligne : https://doi.org/10.1016/j.isprsjprs.2003.09.004 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=bulletin_display&id=21383 [n° ou bulletin]

Contient

• Object extraction and revision by image analysis using existing geodata and knowledge: current status and steps towards operational systems / Emmanuel P. Baltsavias in ISPRS Journal of photogrammetry and remote sensing, vol 58 n° 3-4 (January - June 2004)  
• Graph-supported verification of road databases / Markus Gerke in ISPRS Journal of photogrammetry and remote sensing, vol 58 n° 3-4 (January - June 2004)  
• Towards an operational system for automated updating of road databases by integration of imagery and geodata / C. Zhang in ISPRS Journal of photogrammetry and remote sensing, vol 58 n° 3-4 (January - June 2004)  
• Detecting building changes from multitemporal aerial stereopairs / Franck Jung in ISPRS Journal of photogrammetry and remote sensing, vol 58 n° 3-4 (January - June 2004)  
• Reconstruction of 3D building models from aerial images and maps / ldikó Süveg in ISPRS Journal of photogrammetry and remote sensing, vol 58 n° 3-4 (January - June 2004)  
• Object-based classification of remote sensing data for change detection / Volker Walter in ISPRS Journal of photogrammetry and remote sensing, vol 58 n° 3-4 (January - June 2004)  
• Multi-resolution, object-oriented fuzzy analysis of remote sensing data for GIS-ready information / U.C. Benz in ISPRS Journal of photogrammetry and remote sensing, vol 58 n° 3-4 (January - June 2004)  

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
081-04012	RAB	Revue	Centre de documentation	En réserve L003	Disponible
081-04011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Proceedings of the ISPRS conference IC II/IV, WG III/4, III/5, III/6 Photogrammetric image analysis, 17-19 September, 2003, Munich, Germany / Heinrich Ebner (2003)  

Public Titre : Proceedings of the ISPRS conference IC II/IV, WG III/4, III/5, III/6 Photogrammetric image analysis, 17-19 September, 2003, Munich, Germany Type de document : Actes de congrès Auteurs : Heinrich Ebner, Éditeur scientifique ; Christian Heipke, Éditeur scientifique ; Helmut Mayer, Éditeur scientifique ; Kian Pakzad, Éditeur scientifique Editeur : International Society for Photogrammetry and Remote Sensing ISPRS Année de publication : 2003 Collection : International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, ISSN 1682-1750 num. 34-3/W8 Conférence : PIA 2003, ISPRS Conference on Photogrammetric image analysis 17/09/2003 19/09/2003 Munich Allemagne OA ISPRS Archives Importance : 192 p. Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] analyse d'image numérique Numéro de notice : 17378 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Actes DOI : sans En ligne : http://www.isprs.org/proceedings/XXXIV/3-W8/ Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84583

Contient

• 3D City Models : an operational approach using aerial image and cadastral maps / David Flamanc (2003)    
• Extracting 3D free-form surface boundaries of man-made objects from multiple calibrated images : a robust, accurate and high resolving power edgel matching and chaining approach / Franck Jung (2003)    

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
17378-01	CG2003	Livre	Centre de documentation	Congrès	Disponible

Wissensbasierte Interpretation von Vegetationsflächen aus multitemporalen Fernerkundungsdaten / Kian Pakzad (2001)

Public Titre : Wissensbasierte Interpretation von Vegetationsflächen aus multitemporalen Fernerkundungsdaten Titre original : [L'interprétation basée sur les connaissances des surfaces végétales a partir de données de télédétection multi temporelles] Type de document : Thèse/HDR Auteurs : Kian Pakzad, Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 2001 Collection : DGK - C Sous-collection : Dissertationen num. 543 Importance : 104 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-9582-3 Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] analyse diachronique [Termes IGN] classification à base de connaissances [Termes IGN] image multitemporelle [Termes IGN] interprétation automatique [Termes IGN] lande [Termes IGN] réseau sémantique [Termes IGN] segmentation d'image [Termes IGN] surveillance de la végétation [Termes IGN] système expert Résumé : (Auteur) The thesis in hand presents a general concept for the automatic interpretation of remote sensing data with the interpretation of vegetation areas brought into focus, which uses both structural features and temporal knowledge. Based on this concept, a method for automatic multitemporal interpretation of moorland is explained. The developed procedures rely on a knowledge based image analysis system, which uses Semantic Nets for knowledge representation in standard language. During the interpretation process these are used for deriving hypotheses by applying a continuous symbolic processing, to verify them, and thus gain a symbolic description of the examined landscape scene. Verification of the hypotheses is carried out in the remote sensing data using specific processing operators. The introduced general concept for interpretation of remote sensing data groups the object classes found in the landscape into various categories, according to their characteristics. Thus object classes were discerned which possess a given geometry, given texture, given pattern, or characteristic features. Interpretation strategies are suggested for each category, which relate to the creation of the semantic nets as well as to the specific image processing operators. Then the interpretation of vegetation areas belonging to the latter category is brought into focus. As such areas often are inhomogeneous and show numerous structures, the approaches of multispectral classification applied so far are less suitable as they result in oversegmentation, and either do not or to a little extent utilize structural features for interpretation. The new strategy presented here proceeds from given segment borders and searches for structural features within the borders. Such structural features are described by standard language and may be for example "tracks", "irregular structure", or "vegetation". Their verification in the images is done by feature analysis operators. For interpretation of temporal changes a new concept is suggested, which discretely describes temporal conditions of regions, and which transfers the most probable temporal changes of the given conditions as temporal knowledge into a state transition diagram, then using it for multitemporal interpretation. Thus the temporal history of the past interpretations is used for the interpretation of images of a particular epoch by favouring certain interpretation methods, and a priori excluding others. Based on the described approaches a procedure for automatic multitemporal interpretation of industrially used moorland was successfully developed. Proceeding from an initial segmentation based on GeoData a resegmentation and an interpretation of the segments is carried out for each investigated epoch. By using temporal knowledge it is possible to separate moor classes, which can only be detected in temporal order. The application of temporal knowledge and structural features enables the exclusive use of grey scale images for interpretation of vegetation areas. The results show that the presented procedure is suitable for multitemporal interpretation of moorland, and that it is able to distinguish additional moor classes compared to the approaches used so far. It is further applicable for a more robust multitemporal interpretation, and does not depend on colour images. Numéro de notice : 13067 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Thèse étrangère Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54867

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
13067-01	35.41	Livre	Centre de documentation	Télédétection	Disponible