Descripteur
Documents disponibles dans cette catégorie (1866)
![](./images/expand_all.gif)
![](./images/collapse_all.gif)
Etendre la recherche sur niveau(x) vers le bas
Routes visualization: Automated placement of multiple route symbols along a physical network infrastructure / Jules Teulade-Denantes in Journal of Spatial Information Science, JoSIS, n° 11 (September 2015)
![]()
![]()
[article]
Titre : Routes visualization: Automated placement of multiple route symbols along a physical network infrastructure Type de document : Article/Communication Auteurs : Jules Teulade-Denantes, Auteur ; Adrien Maudet , Auteur ; Cécile Duchêne
, Auteur
Année de publication : 2015 Article en page(s) : 53--79 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] algorithme du recuit simulé
[Termes IGN] carte routière
[Termes IGN] optimisation (mathématiques)
[Termes IGN] placement automatique des signes conventionnels
[Termes IGN] programmation par contraintes
[Termes IGN] réseau routier
[Termes IGN] sentier
[Vedettes matières IGN] GénéralisationMots-clés libres : automated cartography route maps symbol placement constraint formulation constraint optimization problem simulated annealing Résumé : (auteur) This paper tackles the representation of routes carried by a physical network infrastructure on a map. In particular, the paper examines the case where each route is represented by a separate colored linear symbol offset from the physical network segments and from other routes—as on public transit maps with bus routes offset from roads. In this study, the objective is to automate the placement of such route symbols while maximizing their legibility, especially at junctions. The problem is modeled as a constraint optimization problem. Legibility criteria are identified and formalized as constraints to optimize, while focusing on the case of hiking routes in a physical network composed of roads and pedestrian paths. Two solving methods are tested, based on backtracking and simulated annealing meta-heuristics respectively. Encouraging results obtained on real data are presented and discussed. Numéro de notice : A2015--057 Affiliation des auteurs : LASTIG COGIT (2012-2019) Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.5311/JOSIS.2015.11.230 Date de publication en ligne : 17/09/2015 En ligne : http://dx.doi.org/10.5311/JOSIS.2015.11.230 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83281
in Journal of Spatial Information Science, JoSIS > n° 11 (September 2015) . - 53--79[article]Documents numériques
en open access
Routes visualizationAdobe Acrobat PDFColor and texture interpolation between orthoimagery and vector data / Charlotte Hoarau in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol II-3 W5 (October 2015)
![]()
[article]
Titre : Color and texture interpolation between orthoimagery and vector data Type de document : Article/Communication Auteurs : Charlotte Hoarau , Auteur ; Sidonie Christophe
, Auteur
Année de publication : 2015 Conférence : ISPRS 2015, Geospatial Week : Laserscanning, ISSDQ, CMRT, ISA, GeoVIS, GeoBigData 28/09/2015 03/10/2015 La Grande Motte France ISPRS OA Annals, GeoVIS 2015 28/09/2015 03/10/2015 La Grande Motte France ISPRS OA Annals Article en page(s) : pp 507 - 514 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] couleur à l'écran
[Termes IGN] données vectorielles
[Termes IGN] interpolation
[Termes IGN] orthoimage couleur
[Termes IGN] rendu réaliste
[Termes IGN] représentation continue
[Termes IGN] représentation des données
[Termes IGN] superposition
[Termes IGN] texture d'image
[Termes IGN] visualisation de données
[Vedettes matières IGN] GéovisualisationRésumé : (auteur) Graphic interfaces of geoportals allow visualizing, sometimes overlaying often by image blending, various data and representations of geographical spaces: vector data, maps, aerial imagery, Digital Terrain Model (DTM), etc. After some previous works it appears that image blending is insufficient to allow efficient co-visualization of orthoimagery and vector data. Our purpose is to be able to manage an hybrid visualization of orthoimagery and vector data, efficient and useful. The diversity of hybridization levels requires to be able to control a continuum between such data. We thus have to propose rendering methods to mix heterogeneous data, in order to propose homogeneous and continuous intermediary representations. This paper proposes a methodology to interpolate graphic parameters between an orthoimage and related vector data, to control the level of orthophotorealism, all along the continuum. We detail the methodology based on several interpolation components, to control abstraction and realism levels, by manipulating colors and textures (natural, procedural or mixed). Numéro de notice : A2015--050 Affiliation des auteurs : LASTIG COGIT (2012-2019) Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.5194/isprsannals-II-3-W5-507-2015 En ligne : http://dx.doi.org/10.5194/isprsannals-II-3-W5-507-2015 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=82611
in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences > vol II-3 W5 (October 2015) . - pp 507 - 514[article]Boundary element and finite element coupling for aeroacoustics simulations / Nolwenn Balin in Journal of Computational Physics, vol 294 ([01/08/2015])
![]()
[article]
Titre : Boundary element and finite element coupling for aeroacoustics simulations Type de document : Article/Communication Auteurs : Nolwenn Balin, Auteur ; Fabien Casenave , Auteur ; François Dubois, Auteur ; Eric Duceau, Auteur ; Stefan Duprey, Auteur ; Isabelle Terrasse, Auteur
Année de publication : 2015 Article en page(s) : pp 274 - 296 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse numérique
[Termes IGN] méthode des éléments finisRésumé : (auteur) We consider the scattering of acoustic perturbations in the presence of a flow. We suppose that the space can be split into a zone where the flow is uniform and a zone where the flow is potential. In the first zone, we apply a Prandtl–Glauert transformation to recover the Helmholtz equation. The well-known setting of boundary element method for the Helmholtz equation is available. In the second zone, the flow quantities are space dependent, we have to consider a local resolution, namely the finite element method. Herein, we carry out the coupling of these two methods and present various applications and validation test cases. The source term is given through the decomposition of an incident acoustic field on a section of the computational domain's boundary. Validations against analytic, another numerical method and measurements on different test cases are presented. Numéro de notice : A2015-003 Affiliation des auteurs : non IGN Thématique : MATHEMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.jcp.2015.03.044 Date de publication en ligne : 31/03/2015 En ligne : https://doi.org/10.1016/j.jcp.2015.03.044 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=93241
in Journal of Computational Physics > vol 294 [01/08/2015] . - pp 274 - 296[article]GIS based drainage morphometry and its influence on hydrology in parts of Western Ghats region, Maharashtra, India / Dipak R. Samal in Geocarto international, vol 30 n° 7 - 8 (August - September 2015)
![]()
[article]
Titre : GIS based drainage morphometry and its influence on hydrology in parts of Western Ghats region, Maharashtra, India Type de document : Article/Communication Auteurs : Dipak R. Samal, Auteur ; Shirish S. Gedam, Auteur ; R. Nagarajan, Auteur Année de publication : 2015 Article en page(s) : pp 755 - 778 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] analyse multicritère
[Termes IGN] base de données thématiques
[Termes IGN] bassin hydrographique
[Termes IGN] carte topographique
[Termes IGN] corrélation
[Termes IGN] géomorphométrie
[Termes IGN] Ghats occidentaux
[Termes IGN] hydrographie de surface
[Termes IGN] Inde
[Termes IGN] intégration de données
[Termes IGN] Maharashtra (Inde ; état)
[Termes IGN] matrice
[Termes IGN] MNS ASTER
[Termes IGN] système d'information géographiqueRésumé : (Auteur) Various drainage morphometric parameters in the Upper Bhima river basin and its influence on hydrological processes (e.g. runoff, peak flow, time to peak, infiltration, overland flow, etc.) were discussed using geographical information system (GIS) and remote sensing techniques. Survey of India topographical maps and ASTER digital elevation model was incorporated for thematic database generation and morphometric parameter evaluation in GIS environment. The whole study basin was divided into 8 sub-basins so that the spatial variation of morphological parameters and its influence on hydrology could be analyzed. The interrelationship between morphometric variables were computed (p Numéro de notice : A2015-501 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2014.978903 Date de publication en ligne : 15/06/2015 En ligne : http://www.tandfonline.com/doi/full/10.1080/10106049.2014.978903 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77417
in Geocarto international > vol 30 n° 7 - 8 (August - September 2015) . - pp 755 - 778[article]Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 059-2015041 RAB Revue Centre de documentation En réserve L003 Disponible Short-term surface deformation on the Northern Hayward Fault, CA, and nearby landslides using polarimetric SAR interferometry (PolInSAR) / Samira Alipour in Pure and applied geophysics, vol 172 n° 8 (August 2015)
![]()
[article]
Titre : Short-term surface deformation on the Northern Hayward Fault, CA, and nearby landslides using polarimetric SAR interferometry (PolInSAR) Type de document : Article/Communication Auteurs : Samira Alipour, Auteur ; Christy F. Tiampo, Auteur ; Sergey V. Samsonov, Auteur ; Pablo J. González, Auteur Année de publication : 2015 Article en page(s) : pp 2179 - 2193 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] Californie (Etats-Unis)
[Termes IGN] faille géologique
[Termes IGN] image Radarsat
[Termes IGN] optimisation (mathématiques)
[Termes IGN] polarimétrie radar
[Termes IGN] risque naturelRésumé : (auteur) In this study, we analyze 25 RADARSAT-2 images from ascending and descending geometries to study the creep rate on the Hayward fault and landslide motions near Berkeley, CA. We applied a coherence optimization technique from polarimetric synthetic aperture radar interferometry (PolInSAR) to increase the accuracy of the measurements. We resolve 3–5 mm/year of motion along the Hayward fault, in agreement with earlier creep estimates. We identify a potential motion on secondary fault, northeast and parallel to the Hayward fault, which is creeping at a lower rate of ~1.5 mm/year. In addition, we identify a number of landslides along the hills east of the fault that agree with earlier results from advanced interferometric synthetic aperture radar (SAR) analysis and field investigations. We investigate four particular slope instabilities, one of which was marked as moderately active, and three as highly active, by earlier field investigations. The resolved along-hill slope displacement is estimated at ~23 mm/year. Our results demonstrate that PolInSAR is an effective method to increase the interferometric coherence and provide improved resolution of deformation features associated with natural hazards. Numéro de notice : A2015-492 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1007/s00024-013-0747-x Date de publication en ligne : 10/12/2013 En ligne : https://doi.org/10.1007/s00024-013-0747-x Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77287
in Pure and applied geophysics > vol 172 n° 8 (August 2015) . - pp 2179 - 2193[article]Hyperspectral and multispectral image fusion based on a sparse representation / Qi Wei in IEEE Transactions on geoscience and remote sensing, vol 53 n° 7 (July 2015)
PermalinkAccuracy of unmodified Stokes’ integration in the R-C-R procedure for geoid computation / Zahra Ismaïl in Journal of applied geodesy, vol 9 n° 2 (June 2015)
PermalinkExtension of the linear chromodynamics model for spectral change detection in the presence of residual spatial misregistration / Karmon Vongsy in IEEE Transactions on geoscience and remote sensing, vol 53 n° 6 (June 2015)
PermalinkSubstance dependence constrained sparse NMF for hyperspectral unmixing / Yuan Yuan in IEEE Transactions on geoscience and remote sensing, vol 53 n° 6 (June 2015)
PermalinkAdaptive relative motion representation of space–time trajectories / Antoni B. Moore in Cartographic journal (the), Vol 52 n° 2 (May 2015)
PermalinkBuilding a hybrid land cover map with crowdsourcing and geographically weighted regression / Linda M. See in ISPRS Journal of photogrammetry and remote sensing, vol 103 (May 2015)
PermalinkDeveloping predictive models of wind damage in Austrian forests / Ferenc Pasztor in Annals of Forest Science, vol 72 n° 3 (May 2015)
PermalinkInterferometric phase image estimation via sparse coding in the complex domain / Hao Hongxing in IEEE Transactions on geoscience and remote sensing, vol 53 n° 5 (mai 2015)
PermalinkFast subpixel mapping algorithms for subpixel resolution change detection / Qunming Wang in IEEE Transactions on geoscience and remote sensing, vol 53 n° 4 (April 2015)
PermalinkA greedy-based multiquadric method for LiDAR-derived ground data reduction / Chuanfa Chen in ISPRS Journal of photogrammetry and remote sensing, vol 102 (April 2015)
Permalink