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Inferring and enforcing geometrical constraints on a 3D model for building reconstruction / Franck Taillandier (2005)
contenu dans Image Analysis, 14th Scandinavian Conference, SCIA 2005, Joensuu, Finland, June 2005 / Heikki Kalviainen (2005)
Titre : Inferring and enforcing geometrical constraints on a 3D model for building reconstruction Type de document : Article/Communication Auteurs : Franck Taillandier , Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2005 Collection : Lecture notes in Computer Science, ISSN 0302-9743 num. 3540 Conférence : SCIA 2005, 14th Scandinavian Conference on Image Analysis 19/06/2005 22/06/2005 Joensuu Finlande Proceedings Springer Importance : pp 699 - 708 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] contrainte géométrique
[Termes IGN] modèle numérique
[Termes IGN] reconstruction 3D du bâtiRésumé : (auteur) We present a method for inferring and enforcing geometrical constraints on an approximate 3D model for building reconstruction applications. Compared to previous works, this approach requires no user intervention for constraints definition, is inherently compliant with the detected constraints and handles over-constrained configurations. An iterative minimization is applied to search for the model subject to geometric constraints that minimizes the distance to the initial approximate model. Results on real data show the gain obtained by this algorithm. Numéro de notice : C2005-032 Affiliation des auteurs : MATIS (1993-2011) Thématique : IMAGERIE Nature : Poster nature-HAL : Poster-avec-CL DOI : 10.1007/11499145_71 En ligne : http://dx.doi.org/10.1007/11499145_71 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=99560
Titre : Integrating structured descriptions of processes in geographical metadata Type de document : Article/Communication Auteurs : Bénédicte Bucher , Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2005 Conférence : SDH 2004, 11th international symposium on Spatial Data Handling 23/08/2004 25/08/2005 Leicester Royaume-Uni Proceedings Springer Importance : pp 629 - 639 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] métadonnées géographiques
[Termes IGN] modèle conceptuel de données localisées
[Termes IGN] processusRésumé : (auteur) This paper extends upon a category of information, processes description, and its relevance in metadata about geographic information. Metadata bases about processes are needed because processes are themselves resources to manage. Besides, specific processes participate in the description of other types of resources like data sets. Still, current metadata models lack structured containers for this type of information. We propose a model to build structured descriptions of processes to be integrated in metadata bases about processes themselves or about data sets. Numéro de notice : C2004-030 Affiliation des auteurs : COGIT (1988-2011) Autre URL associée : vers HAL Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/3-540-26772-7_47 En ligne : https://doi.org/10.1007/3-540-26772-7_47 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=99836 Map-based mobile services / L. Meng (2005)
Titre : Map-based mobile services : theories, methods and implementations Type de document : Monographie Auteurs : L. Meng, Éditeur scientifique ; Alexander Zipf, Éditeur scientifique ; Tumasch Reichenbacher, Éditeur scientifique Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2005 Importance : 260 p. Format : 16 x 24 cm + 1 cédérom ISBN/ISSN/EAN : 978-3-540-23055-7 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] cartographie pour écran mobile
[Termes IGN] géomatique web
[Termes IGN] service fondé sur la positionRésumé : (Editeur) The book is divided into three parts: theory, method and implementation. Starting with a summary of the state-of-the-art in mobile technologies, the first part analyses their impacts on cartography and pinpoints the missing theories concerned with the development of map-based mobile services. A conceptual framework of mobile cartography is then introduced with the emphasis on mobile usage context. The second part is devoted to the design methodology under the constraints defined in the theoretical framework. A core issue deals with personalised mobile map services. The final part demonstrates the feasibility of the methods by using application scenarios. The accompanying CD-ROM contains the PDF-Files in colour. Note de contenu : 1. Map-based mobile services
2. Portrayal and Generalisation of Point Maps for Mobile Information Services
3. Activity and Context - A Conceptual Framework for Mobile Geoservices
4. Effectiveness and efficiency of tourism maps in the World Wide Web and their potential for mobile map services
5. The Cognitive Reality of Schematic Maps
6. Adaptive Visualisation of Landmarks using an MRDB
7. Ego centres of mobile users and egocentric map design
8. Adaptation to Context – A Way to Improve the Usability of Mobile Maps
9. Focalizing Measures of Salience for Wayfinding
10. Adaptive egocentric maps for mobile users
11. Cartographic Location Based Services
12. XML in Service Architectures for Mobile Cartographic Applications
13. A Survey of Map-based Mobile Guides
14. Position Determination of Reference Points in Surveying
15. Dynamic 3D Maps for Mobile Tourism Applications
16. Designing electronic maps: an ethnographic approachNuméro de notice : 20558 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Recueil / ouvrage collectif Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=41805 Réservation
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Titre : A minimum energy condition for the inverse gravimetric problem Type de document : Article/Communication Auteurs : Olivier Jamet , Auteur ; Michel Diament , Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2005 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 128 Conférence : IAG 2003, International Association of Geodesy General Assembly 30/06/2003 11/07/2003 Sapporo Japon Proceedings Springer Importance : pp 446 - 451 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] densité
[Termes IGN] distribution spatiale
[Termes IGN] espace de Hilbert
[Termes IGN] levé gravimétrique
[Termes IGN] méthode de réduction d'énergie
[Termes IGN] problème inverseRésumé : (auteur) The problem of finding the density distribution of the Earth from gravity data is called the inverse gravimetric problem. It is well known that this problem has not a unique solution. A possible approach to force the uniqueness of the solution is to impose the solution to realize a minimum of energy, that is to be an equilibrium distribution. Several authors have considered this possibility by setting the energy to the sole energy of the potential field. In this paper, we show that such approaches correspond to the maximization of a quadratic form in the set of the density distributions considered as an Hilbert space. As a consequence, they cannot deliver realistic results without a constraint that reduces the set of possible density distributions to a bounded domain of the considered Hilbert space. Moreover, under such constraints, the result will necessarily be located at the boundary of the searched domain. In order to express a steady state condition leading to a freer solution, we propose to introduce a compression energy. We choose the state equation of Murnaghan that is known to apply reasonably in the upper mantle. We give an integral form of the compression energy and show that the resulting total energy admits a lower bound, which assess the existence of a solution. Finally, we derive a differential equation verified by that the absolute minima from the equilibrium equation under its local form. Numéro de notice : C2003-056 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : MATHEMATIQUE/POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/3-540-27432-4_76 En ligne : https://doi.org/10.1007/3-540-27432-4_76 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=103459
contenu dans Gravity, geoid and space missions GGSM 2004, IAG international symposium, Porto, Portugal, August 30 - September 3, 2004 / Christopher Jekeli (2005)
Titre : Modelling the Earth’s gravity field using wavelet frames Type de document : Article/Communication Auteurs : Isabelle Panet , Auteur ; Olivier Jamet , Auteur ; Michel Diament , Auteur ; Aude Chambodut, Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2005 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 129 Conférence : IAG 2004, GGSM international symposium Gravity, geoid and space missions 30/08/2004 03/09/2004 Porto Portugal Proceedings Springer Importance : pp 48 - 53 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] champ de pesanteur terrestre
[Termes IGN] collocation par moindres carrés
[Termes IGN] Earth Gravity Model 1996
[Termes IGN] modèle numérique
[Termes IGN] ondelette
[Termes IGN] ondelette d'Abel-Poisson
[Termes IGN] transformation en ondelettesRésumé : (auteur) Present and forthcoming satellite gravity missions provide us with new and unique datasets in order to model the Earth's gravity field at 100 km resolution. These new models will bring significant advances in our understanding of the Earth's structure and dynamics. However, it will be necessary to combine satellite data with surface and airborne measurements in order to improve the short wavelength components of the gravity field. The derived regional models with an increased spatial resolution will be used to carry out geodynamic studies at lithospheric or crustal scale. Whereas the classical spherical harmonics decomposition leads to strong numerical difficulties when dealing with local features, wavelet-based representations can handle the local scales as well as the global ones; they should thus be extremely useful to derive local models taking into account data of different origins. Here we describe the construction of wavelet frames on the sphere based on the Poisson multipole wavelet. Those wavelets are of special interest for field modelling since their shape is linked to the potential of multipole sources, and their scaling parameter to the multipole depth (Holschneider et al., 2003). We also compute a local wavelet decomposition of the gravity field at high resolution from evenly and unevenly distributed data using least squares collocation. Our first results show the efficiency of such a representation. Numéro de notice : C2004-028 Affiliation des auteurs : LAREG+Ext (1991-2011) Autre URL associée : vers HAL Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/3-540-26932-0_9 En ligne : https://doi.org/10.1007/3-540-26932-0_9 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96659 Pattern recognition and image analysis, 2nd Iberian conference, IbPRIA 2005, Estoril, Portugal, June 2005, Part 1. Proceedings / Jorge S. Marques (2005)PermalinkPattern recognition and image analysis, 2nd Iberian conference, IbPRIA 2005, Estoril, Portugal, June 2005, Part 2. Proceedings / Jorge S. Marques (2005)PermalinkPhysical geodesy / Bernhard Hofmann-Wellenhof (2005)PermalinkProceedings of the 9th European Conference on Computer-supported Cooperative Work, ECSCW'05, 18 - 22 september 2005, Paris, France / Hans Gellersen (2005)PermalinkSatellites / Michel Capderou (2005)PermalinkSolving algebraic computational problems in geodesy and geoinformatics / Joseph L. Awange (2005)PermalinkPermalinkMerging a gravimetric model of the geoid with GPS-leveling data: an example in Belgium / Henri Duquenne (01/08/2004)PermalinkConsistency assessment between multiple representations of geographical databases: a specification-based approach / David Sheeren (2004)PermalinkDatabase and expert systems applications, 15th International Conference, DEXA 2004, Zaragoza, Spain, August/September 2004 / Fernando Galindo (2004)Permalink