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Titre : The 23rd international conference on MultiMedia Modeling, MMM 2017 : Proceedings, part 2 Type de document : Actes de congrès Auteurs : Laurent Amsaleg, Éditeur scientifique ; Gylfi Þór Guomundsson, Éditeur scientifique ; Cathal Gurrin, Éditeur scientifique ; Björn Þór Jónsson, Éditeur scientifique ; Shin’ichi Satoh, Éditeur scientifique Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2017 Autre Editeur : Reykjavik University Collection : Lecture notes in Computer Science, ISSN 0302-9743 num. 10133 Conférence : MMM 2017, 23rd international conference on Multimedia Modeling 04/01/2017 06/01/2017 Reykjavik Islande Proceedings Springer Importance : 502 p. Format : 16 x 24 cm ISBN/ISSN/EAN : 978-3-319-51813-8 Langues : Anglais (eng) Numéro de notice : 22822 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Actes DOI : 10.1007/978-3-319-51814-5 En ligne : https://link.springer.com/book/10.1007/978-3-319-51814-5 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=88987
Titre : Urban dynamics and simulation models Type de document : Monographie Auteurs : Denise Pumain, Auteur ; Romain Reuillon, Auteur ; Paul Chapron , Auteur ; Guillaume Chérel, Auteur ; Clémentine Cottineau, Auteur ; Robin Cura, Auteur ; Mathieu Leclaire, Auteur ; Sébastien Rey-Coyrehourcq, Auteur ; Clara Schmitt, Auteur ; Elfie Swerts, Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2017 Collection : Lecture Notes in Morphogenesis, ISSN 2195-1934 ISBN/ISSN/EAN : 978-3-319-46495-4 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] dynamique spatiale
[Termes IGN] milieu urbain
[Termes IGN] modèle de simulation
[Termes IGN] modèle orienté agent
[Termes IGN] transition énergétique
[Termes IGN] villeRésumé : (auteur) This monograph presents urban simulation methods that help in better understanding urban dynamics. Over historical times, cities have progressively absorbed a larger part of human population and will concentrate three quarters of humankind before the end of the century. This “urban transition” that has totally transformed the way we inhabit the planet is globally understood in its socio-economic rationales but is less frequently questioned as a spatio-temporal process. However, the cities, because they are intrinsically linked in a game of competition for resources and development, self organize in “systems of cities” where their future becomes more and more interdependent. The high frequency and intensity of interactions between cities explain that urban systems all over the world exhibit large similarities in their hierarchical and functional structure and rather regular dynamics. They are complex systems whose emergence, structure and further evolution are widely governed by the multiple kinds of interaction that link the various actors and institutions investing in cities their efforts, capital, knowledge and intelligence. Simulation models that reconstruct this dynamics may help in better understanding it and exploring future plausible evolutions of urban systems. This would provide better insight about how societies can manage the ecological transition at local, regional and global scales. The author has developed a series of instruments that greatly improve the techniques of validation for such models of social sciences that can be submitted to many applications in a variety of geographical situations. Examples are given for several BRICS countries, Europe and United States. The target audience primarily comprises research experts in the field of urban dynamics, but the book may also be beneficial for graduate students. Numéro de notice : 17620 Affiliation des auteurs : LASTIG+Ext (2016-2019) Thématique : URBANISME Nature : Recueil / ouvrage collectif nature-HAL : OuvrScient DOI : 10.1007/978-3-319-46497-8 En ligne : https://doi.org/10.1007/978-3-319-46497-8 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97069
Titre : 3D watertight mesh generation with uncertainties from ubiquitous data Type de document : Article/Communication Auteurs : Laurent Caraffa , Auteur ; Mathieu Brédif , Auteur ; Bruno Vallet , Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2016 Collection : Lecture notes in Computer Science, ISSN 0302-9743 num. 10114 Projets : IQmulus / Métral, Claudine Conférence : ACCV 2016, 13th Asian Conference on Computer Vision 20/11/2016 24/11/2016 Taipei Taiwan Proceedings Springer Importance : pp 377 - 391 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] algorithme Graph-Cut
[Termes IGN] carte de confiance
[Termes IGN] distance de Hausdorff
[Termes IGN] incertitude géométrique
[Termes IGN] maille triangulaire
[Termes IGN] reconstruction d'objet
[Termes IGN] semis de points
[Termes IGN] seuillage
[Termes IGN] surface imperméable
[Termes IGN] théorie de Dempster-ShaferRésumé : (auteur) In this paper, we propose a generic framework for watertight mesh generation with uncertainties that provides a confidence measure on each reconstructed mesh triangle. Its input is a set of vision-based or Lidar-based 3D measurements which are converted to a set of mass functions that characterize the level of confidence on the occupancy of the scene as occupied, empty or unknown based on Dempster-Shafer Theory. The output is a multi-label segmentation of the ambient 3D space expressing the confidence for each resulting volume element to be occupied or empty. While existing methods either sacrifice watertightness (local methods) or need to introduce a smoothness prior (global methods), we derive a per-triangle confidence measure that is able to gradually characterize when the resulting surface patches are certain due to dense and coherent measurements and when these patches are more uncertain and are mainly present to ensure smoothness and/or watertightness. The surface mesh reconstruction is formulated as a global energy minimization problem efficiently optimized with the α-expansion algorithm. We claim that the resulting confidence measure is a good estimate of the local lack of sufficiently dense and coherent input measurements, which would be a valuable input for the next-best-view scheduling of a complementary acquisition.
Beside the new formulation, the proposed approach achieves state-of-the-art results on surface reconstruction benchmark. It is robust to noise, manages high scale disparity and produces a watertight surface with a small Hausdorff distance in uncertainty area thanks to the multi-label formulation. By simply thresholding the result, the method shows a good reconstruction quality compared to local algorithms on high density data. This is demonstrated on a large scale reconstruction combining real-world datasets from airborne and terrestrial Lidar and on an indoor scene reconstructed from images.Numéro de notice : C2016-024 Affiliation des auteurs : LASTIG MATIS (2012-2019) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/978-3-319-54190-7_23 Date de publication en ligne : 12/03/2017 En ligne : http://doi.org/10.1007/978-3-319-54190-7_23 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84627 Documents numériques
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Titre : Advances in discrete differential geometry Type de document : Monographie Auteurs : Alexander I. Bobenko, Éditeur scientifique Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2016 Importance : 439 p. ISBN/ISSN/EAN : 978-3-662-50447-5 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse mathématique
[Termes IGN] géométrie différentielleIndex. décimale : 23.30 Analyse mathématique Résumé : (Editeur) [Preface] In this book we take a closer look at discrete models in differential geometry and dynamical systems. The curves used are polygonal, surfaces are made from triangles and quadrilaterals, and time runs discretely. Nevertheless, one can hardly see the difference to the corresponding smooth curves, surfaces, and classical dynamical systems with continuous time. This is the paradigm of structure-preserving discretizations. The common idea is to find and investigate discrete models that exhibit properties and structures characteristic of the corresponding smooth geometric objects and dynamical processes. These important and characteristic qualitative features should already be captured at the discrete level. The current interest and advances in this field are to a large extent stimulated by its relevance for computer graphics, mathematical physics, architectural geometry, etc. The book focuses on differential geometry and dynamical systems, on smooth and discrete theories, and on pure mathematics and its practical applications. It demonstrates this interplay using a range of examples, which include discrete conformal mappings, discrete complex analysis, discrete curvatures and special surfaces, discrete integrable systems, special texture mappings in computer graphics, and freeform architecture. It was written by specialists from the DFG Collaborative Research Center “Discretization in Geometry and Dynamics”. The work involved in this book and other selected research projects pursued by the Center was recently documented in the film “The Discrete Charm of Geometry” by Ekaterina Eremenko. Lastly, the book features a wealth of illustrations, revealing that this new branch of mathematics is both (literally) beautiful and useful. In particular the cover illustration shows the discretely conformally parametrized surfaces of the inflated letters A and B from the recent educational animated film “conform!” by Alexander Bobenko and Charles Gunn. At this place, we want to thank the Deutsche Forschungsgesellschaft for its ongoing support. Note de contenu :
- Discrete Conformal Maps: Boundary Value Problems, Circle Domains, Fuchsian and Schottky Uniformization /Alexander I. Bobenko, Stefan Sechelmann and Boris Springborn
- Discrete Complex Analysis on Planar Quad-Graphs / Alexander I. Bobenko and Felix Günther
- Approximation of Conformal Mappings Using Conformally Equivalent Triangular Lattices / Ulrike Bücking
- Numerical Methods for the Discrete Map Za / Folkmar Bornemann, Alexander Its, Sheehan Olver and Georg Wechslberger
- A Variational Principle for Cyclic Polygons with Prescribed EdgeLengths / Hana Kouřimská, Lara Skuppin and Boris Springborn
- Complex Line Bundles Over Simplicial Complexes and Their Applications / Felix Knöppel and Ulrich Pinkall
- Holomorphic Vector Fields and Quadratic Differentials on Planar Triangular Meshes / Wai Yeung Lam and Ulrich Pinkall
- Vertex Normals and Face Curvatures of Triangle Meshes / Xiang Sun, Caigui Jiang, Johannes Wallner and Helmut Pottmann
- S-Conical CMC Surfaces. Towards a Unified Theory of Discrete Surfaces with Constant Mean Curvature / Alexander I. Bobenko and Tim Hoffmann
- Constructing Solutions to the Björling Problem for Isothermic Surfaces by Structure Preserving Discretization / Ulrike Bücking and Daniel Matthes
- On the Lagrangian Structure of Integrable Hierarchies /Yuri B. Suris and Mats Vermeeren
- On the Variational Interpretation of the Discrete KP Equation / Raphael Boll, Matteo Petrera and Yuri B. Suris
- Six Topics on Inscribable Polytopes / Arnau Padrol and Günter M. Ziegler
- DGD Gallery: Storage, Sharing, and Publication of Digital Research Data / Michael Joswig, Milan Mehner, Stefan Sechelmann, Jan Techter and Alexander I. BobenkoNuméro de notice : 22744 Affiliation des auteurs : non IGN Thématique : MATHEMATIQUE Nature : Recueil / ouvrage collectif En ligne : http://dx.doi.org/10.1007/978-3-662-50447-5 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86051 Documents numériques
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Titre : Digital image processing : an algorithmic introduction using Java Type de document : Guide/Manuel Auteurs : Wilhelm Burger, Auteur ; Mark J. Burger, Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2016 Collection : Texts in Computer Science TCS, ISSN 1868-095X Importance : 811 p. ISBN/ISSN/EAN : 978-1-4471-6684-9 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image Résumé : (Editeur) Numéro de notice : 26290 Affiliation des auteurs : non IGN Thématique : IMAGERIE/INFORMATIQUE Nature : Manuel informatique DOI : 10.1007/978-1-4471-6684-9 En ligne : https://doi.org/10.1007/978-1-4471-6684-9 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=94949 DPOD2008, A DORIS-oriented terrestrial reference frame for precise orbit determination / Pascal Willis (2016)PermalinkPermalinkPermalinkPermalinkPermalinkQuality evaluation of the weekly vertical loading effects induced from continental water storage models / Z. Li (2016)PermalinkThe International DORIS Service (IDS) : Recent developments in preparation for ITRF2013 / Pascal Willis (2016)Permalink3D modelling with national coverage: Bridging the gap between research and practice / Jantien E. Stoter (2015)PermalinkAugmenting vehicle localization accuracy with cameras and 3D road infrastructure database / Lijun Wei (2015)PermalinkPermalink