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Automatically and accurately conflating raster maps with orthoimagery / C.C. Chen in Geoinformatica, vol 12 n° 3 (September - November 2008)
[article]
Titre : Automatically and accurately conflating raster maps with orthoimagery Type de document : Article/Communication Auteurs : C.C. Chen, Auteur ; Craig A. Knoblock, Auteur ; C. Shahabi, Auteur Année de publication : 2008 Article en page(s) : pp 377 - 410 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] appariement de points
[Termes IGN] carrefour
[Termes IGN] carte thématique
[Termes IGN] conflation
[Termes IGN] données maillées
[Termes IGN] données vectorielles
[Termes IGN] orthoimage
[Termes IGN] réseau routier
[Termes IGN] transformation élastiqueRésumé : (Auteur) Recent growth of geospatial information online has made it possible to access various maps and orthoimagery. Conflating these maps and imagery can create images that combine the visual appeal of imagery with the attribution information from maps. The existing systems require human intervention to conflate maps with imagery. We present a novel approach that utilizes vector datasets as “glue” to automatically conflate street maps with imagery. First, our approach extracts road intersections from imagery and maps as control points. Then, it aligns the two point sets by computing the matched point pattern. Finally, it aligns maps with imagery based on the matched pattern. The experiments show that our approach can conflate various maps with imagery, such that in our experiments on TIGER-maps covering part of St. Louis county, MO, 85.2% of the conflated map roads are within 10.8 m from the actual roads compared to 51.7% for the original and georeferenced TIGER-map roads. Copyright Springer Numéro de notice : A2008-285 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s10707-007-0033-0 En ligne : https://doi.org/10.1007/s10707-007-0033-0 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29278
in Geoinformatica > vol 12 n° 3 (September - November 2008) . - pp 377 - 410[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 057-08031 RAB Revue Centre de documentation En réserve L003 Disponible Coastal surveying techniques / C. Pennington in Geoinformatics, vol 11 n° 6 (01/09/2008)
[article]
Titre : Coastal surveying techniques Type de document : Article/Communication Auteurs : C. Pennington, Auteur ; P. Hobbs, Auteur Année de publication : 2008 Article en page(s) : pp 16 - 19 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] données lidar
[Termes IGN] érosion côtière
[Termes IGN] modélisation 3D
[Termes IGN] précision des données
[Termes IGN] Royaume-Uni
[Termes IGN] surveillance du littoral
[Termes IGN] télémétrie laser terrestreRésumé : (Auteur) This article describes work by the British Geological Survey (BGS) who are using terrestrial laser systems and other surveying techniques to improve our understanding of coastal erosion in different geological environments. These include chalk cliffs in Kent and Sussex, steep Jurassic cliffs in Yorkshire and Dorset and 'soft' cliffs in Kent, Norfolk and Yorshire. Copyright GEOinformatics Numéro de notice : A2008-341 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29334
in Geoinformatics > vol 11 n° 6 (01/09/2008) . - pp 16 - 19[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 262-08061 SL Revue Centre de documentation Revues en salle Disponible Efficient implementation techniques for topological predicates on complex spatial objects / R. Praing in Geoinformatica, vol 12 n° 3 (September - November 2008)
[article]
Titre : Efficient implementation techniques for topological predicates on complex spatial objects Type de document : Article/Communication Auteurs : R. Praing, Auteur ; Monique Schneider, Auteur Année de publication : 2008 Article en page(s) : pp 313 - 356 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] arbre de décision
[Termes IGN] données vectorielles
[Termes IGN] implémentation (informatique)
[Termes IGN] matrice
[Termes IGN] méthode robuste
[Termes IGN] objet géographique complexe
[Termes IGN] optimisation (mathématiques)
[Termes IGN] prédicat
[Termes IGN] relation topologiqueRésumé : (Auteur) Topological relationships like overlap, inside, meet, and disjoint uniquely characterize the relative position between objects in space. For a long time, they have been a focus of interdisciplinary research as in artificial intelligence, cognitive science, linguistics, robotics, and spatial reasoning. Especially as predicates, they support the design of suitable query languages for spatial data retrieval and analysis in spatial database systems and geographical information systems. While, to a large extent, conceptual aspects of topological predicates (like their definition and reasoning with them) as well as strategies for avoiding unnecessary or repetitive predicate executions (like predicate migration and spatial index structures) have been emphasized, the development of robust and efficient implementation techniques for them has been largely neglected. Especially the recent design of topological predicates for all combinations of complex spatial data types has resulted in a large increase of their numbers and stressed the importance of their efficient implementation. The goal of this article is to develop correct and efficient implementation techniques of topological predicates for all combinations of complex spatial data types including two-dimensional point, line, and region objects, as they have been specified by different authors and in different commercial and public domain software packages. Our solution consists of two phases. In the exploration phase, for a given scene of two spatial objects, all topological events like intersection and meeting situations are summarized in two precisely defined topological feature vectors (one for each argument object of a topological predicate) whose specifications are characteristic and unique for each combination of spatial data types. These vectors serve as input for the evaluation phase which analyzes the topological events and determines the Boolean result of a topological predicate (predicate verification) or the kind of topological predicate (predicate determination) by a formally defined method called nine-intersection matrix characterization. Besides this general evaluation method, the article presents an optimized method for predicate verification, called matrix thinning, and an optimized method for predicate determination, called minimum cost decision tree. The methods presented in this article are applicable to all known complete collections of mutually exclusive topological predicates that are formally based on the well known nine-intersection model. Copyright Springer Numéro de notice : A2008-283 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1007/s10707-007-0035-y En ligne : https://doi.org/10.1007/s10707-007-0035-y Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29276
in Geoinformatica > vol 12 n° 3 (September - November 2008) . - pp 313 - 356[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 057-08031 RAB Revue Centre de documentation En réserve L003 Disponible Landslide morphology analysis model based on LiDAR and topographic dataset comparison / Sagi Dalyot in SaLIS Surveying and land information science, vol 68 n° 3 (September 2008)
[article]
Titre : Landslide morphology analysis model based on LiDAR and topographic dataset comparison Type de document : Article/Communication Auteurs : Sagi Dalyot, Auteur ; E. Keinan, Auteur ; Y. Doytsher, Auteur Année de publication : 2008 Article en page(s) : pp 155 - 170 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] analyse comparative
[Termes IGN] croissance urbaine
[Termes IGN] données lidar
[Termes IGN] données localisées numériques
[Termes IGN] effondrement de terrain
[Termes IGN] géomorphologie locale
[Termes IGN] modèle numérique de surface
[Termes IGN] surveillance géologique
[Termes IGN] zone urbaine denseRésumé : (Auteur) The natural trend of megacities is to expand from their centers to outlying areas in order to accommodate rapid population growth. Urban areas situated near steep, mountainous terrain or water sources may suffer from landslides, which are one of the most common natural disasters. This paper outlines a new approach in which airborne laser altimetry is used to automatically identify and model landslide occurrences within the acquired data. Dense and accurate light detection and ranging (LiDAR) topographic observations are modeled and compared to an existing digital elevation model (DEM) of the area acquired at an earlier stage. The standard direct superimposition comparison mechanism, which ignores the datasets' inherent interrelations, usually results in an incorrect modeling outcome. A new modeling concept is proposed that initially monitors the inherent global incongruities by georeferencing the two datasets. These incongruities are then utilized in a novel geospatial matching procedure that makes it possible to achieve a precise and correct local modeling mechanism. The hierarchical comparison concept presented accurate results in automatic identification of landslide phenomena, making it possible to precisely assess their morphology. Copyright SaLIS Numéro de notice : A2008-412 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83666
in SaLIS Surveying and land information science > vol 68 n° 3 (September 2008) . - pp 155 - 170[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 121-08031 RAB Revue Centre de documentation En réserve L003 Disponible De la maquette 3D au SIG 3D pour la gestion du patrimoine archéologique / M. Koehl in Géomatique expert, n° 64 (01/09/2008)
[article]
Titre : De la maquette 3D au SIG 3D pour la gestion du patrimoine archéologique Type de document : Article/Communication Auteurs : M. Koehl, Auteur ; C. Lotthe, Auteur Année de publication : 2008 Article en page(s) : pp 26 - 35 Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] Alsace (France administrative)
[Termes IGN] ArcGIS
[Termes IGN] données laser
[Termes IGN] église
[Termes IGN] intégration de données
[Termes IGN] interopérabilité
[Termes IGN] lever tachéométrique
[Termes IGN] maquette numérique
[Termes IGN] modèle 3D du site
[Termes IGN] modèle numérique de terrain
[Termes IGN] photogrammétrie architecturale
[Termes IGN] photographie aérienne
[Termes IGN] restitution
[Termes IGN] SIG 3D
[Termes IGN] site archéologique
[Termes IGN] visualisation 3DRésumé : (Editeur) Certains lieux historiques sont dans un état de délabrement tel que seules quelques ruines subsistent. Grâce à un relevé topographique précis des pierres, couplé à l'intégration des mesures dans un SIG 3D, il devient possible de reconstituer les parties manquantes et de proposer des visites virtuelles. Cas de l'Abbaye de Niedermunster, en Alsace Numéro de notice : A2008-367 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29360
in Géomatique expert > n° 64 (01/09/2008) . - pp 26 - 35[article]Exemplaires(3)
Code-barres Cote Support Localisation Section Disponibilité 265-08051 RAB Revue Centre de documentation En réserve L003 Disponible IFN-DIR-P000143 RAB Revue Nogent-sur-Vernisson En réserve L003 Exclu du prêt IFN-DIR-P000142 RAB Revue Nogent-sur-Vernisson En réserve L003 Exclu du prêt Shaping polyhedral buildings by the fusion of vector maps and lidar point clouds / L.C. Chen in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 9 (September 2008)PermalinkLes SIG de demain / Françoise de Blomac in SIG la lettre, n° 99 (septembre 2008)PermalinkVariable-resolution compression of vector data / B. Yang in Geoinformatica, vol 12 n° 3 (September - November 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)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)Permalink3D-model of Siberian fortress / M. Anikushkin in GIM international, vol 22 n° 7 (July 2008)PermalinkOracle 11G and Oracle spatial 11G / O. Ertac in Geoinformatics, vol 11 n° 5 (01/07/2008)PermalinkAccuracy assessment of Lidar-derived digital elevation models / F. Aguilar in Photogrammetric record, vol 23 n° 122 (June - August 2008)PermalinkExtensions of GAP-tree and its implementation based on a non-topological data model / C. Cheng in International journal of geographical information science IJGIS, vol 22 n° 6-7 (june 2008)PermalinkFrom 2D to 3D land parcelation: fusion of LiDAR data and cadastral maps / S. Filin in SaLIS Surveying and land information science, vol 68 n° 2 (June 2008)Permalink