Descripteur
Termes IGN > sciences naturelles > physique > traitement d'image > photogrammétrie > point de canevas > point de repère
point de repèreVoir aussi |
Documents disponibles dans cette catégorie (28)
Ajouter le résultat dans votre panier
Visionner les documents numériques
Affiner la recherche Interroger des sources externes
Etendre la recherche sur niveau(x) vers le bas
Description formelle de trajectoire de navigation en environnement maritime côtier / Wissame Laddada in Revue internationale de géomatique, vol 27 n° 2 (avril - juin 2017)
[article]
Titre : Description formelle de trajectoire de navigation en environnement maritime côtier Type de document : Article/Communication Auteurs : Wissame Laddada, Auteur ; Eric Saux, Auteur Année de publication : 2017 Article en page(s) : pp 179 - 202 Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] amer
[Termes IGN] données descriptives
[Termes IGN] formalisation
[Termes IGN] littoral
[Termes IGN] navigation maritime
[Termes IGN] point de repère
[Termes IGN] trajectoire (véhicule non spatial)Résumé : (Auteur) Les systèmes d'information dédiés au routage sont de nos jours à l'apogée de leurs performances. Ceci vient en partie du fait que les modèles qui retranscrivent le processus du « wayfinding » sont de mieux en mieux intégrés au sein de ces systèmes. Nos travaux s'inscrivent dans ce cadre de modélisation à la différence près que nous nous intéressons à la modélisation d'un itinéraire de navigation maritime en zone côtière. Cet environnement de travail est sujet à de nombreux défis puisque la navigation se réalise dans un espace dit « ouvert » car la plupart du temps non contraint — ou non structuré — par des voies de communication. Il en résulte que le processus d'orientation se base essentiellement sur la notion de repère. Cet article propose une formalisation d'un itinéraire de navigation maritime en zone côtière fondée sur la logique de description. Ce modèle formalise les principes spatiaux fondamentaux pour ce type de navigation et montre les capacités de raisonnement d'une telle formalisation sémantique. Numéro de notice : A2017-388 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.3166/rig.2017.00027 En ligne : http://dx.doi.org/10.3166/rig.2017.00027 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85821
in Revue internationale de géomatique > vol 27 n° 2 (avril - juin 2017) . - pp 179 - 202[article]Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 047-2017021 SL Revue Centre de documentation Revues en salle Disponible Progressive block graying and landmarks enhancing as intermediate representations between buildings and urban areas / Guillaume Touya (2017)
Titre : Progressive block graying and landmarks enhancing as intermediate representations between buildings and urban areas Type de document : Article/Communication Auteurs : Guillaume Touya , Auteur ; Marion Dumont , Auteur Editeur : ICA Commission on Generalisation and Multiple Representation Année de publication : 2017 Conférence : ICA 2017, 20th ICA Workshop on Generalisation and Multiple Representation 01/07/2017 02/07/2017 Washington DC Etats-Unis OA program Importance : 10 p. Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse multicritère
[Termes IGN] apprentissage automatique
[Termes IGN] base de données cartographiques
[Termes IGN] estompage automatique
[Termes IGN] généralisation du bâti
[Termes IGN] point de repère
[Termes IGN] relation spatiale
[Termes IGN] zone urbaine
[Termes IGN] zoom
[Vedettes matières IGN] GénéralisationRésumé : (Auteur) Geovisualization applications that allow the navigation between maps at different scales while zooming in and out often provide no smooth transition between the individual building level of abstraction and the representation of whole urban areas as polygons. In order to reduce the cognitive load of the user, we seek to add intermediate zoom levels with intermediate and progressive abstractions between buildings and urban areas. This paper proposes a method based on progressive block graying while enhancing building landmarks, to derive these intermediate representations from the individual buildings. Block graying is based on an automatic building classification, and a multiple criteria decision technique to infer inner city blocks. The landmarks identification relies on machine learning and several criteria based on geometry and spatial relations. The method is tested with real cartographic data between the 1:25k (with individual buildings) and the 1:100k scale (with urban areas): transitions with one, two, or three intermediate representations are derived and tested. Numéro de notice : C2017-007 Affiliation des auteurs : LASTIG COGIT (2012-2019) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86201 Documents numériques
en open access
Progressive_Block_Graying_and_Landmarks_Enhancing - postprintAdobe Acrobat PDF A concept for the examination of reference points stability in horizontal control networks / Ryszard Malarski in Reports on geodesy and geoinformatics, vol 101 (June 2016)
[article]
Titre : A concept for the examination of reference points stability in horizontal control networks Type de document : Article/Communication Auteurs : Ryszard Malarski, Auteur Année de publication : 2016 Article en page(s) : pp 60 - 69 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Topographie
[Termes IGN] barrage
[Termes IGN] compensation de coordonnées
[Termes IGN] point de repère
[Termes IGN] réseau géodésique planimétrique
[Termes IGN] réseau géodésique spécifique
[Termes IGN] stabilitéRésumé : (Auteur) This paper presents a concept for the identification of stable reference points used in horizontal control networks, which is based on the lengths of apparent displacement vectors and their mean errors. These vectors and their mean errors are obtained during the process of calculating displacements with free adjustment conditions. It will be shown that the influence of the apparent displacement vectors has a significant effect on the calculation of results. The identification of stable points, using the proposed method, is an integral part of the adjustment process and allows for the interrogation the influence of individual point inclusion or deletion from the reference database, on the values of displacements of controlled points. A detailed process of stable reference points identification is presented using the example of a linear-angular network for a barrage. Numéro de notice : A2016-652 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1515/rgg-2016-0022 En ligne : http://dx.doi.org/10.1515/rgg-2016-0022 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81871
in Reports on geodesy and geoinformatics > vol 101 (June 2016) . - pp 60 - 69[article]The interaction of landmarks and map alignment in you-are-here maps / Grant McKenzie in Cartographic journal (the), Vol 53 n° 1 (February 2016)
[article]
Titre : The interaction of landmarks and map alignment in you-are-here maps Type de document : Article/Communication Auteurs : Grant McKenzie, Auteur ; Alexander Klippel, Auteur Année de publication : 2016 Article en page(s) : pp 43 - 54 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] calcul d'itinéraire
[Termes IGN] itinéraire
[Termes IGN] lecture de carte
[Termes IGN] plan de ville
[Termes IGN] point de repère
[Termes IGN] représentation cartographique
[Vedettes matières IGN] GéovisualisationMots-clés libres : misaligned map = carte mal-alignée Résumé : (Auteur) Knowing where one is located within an environment is one of the most fundamental tasks humans have to master in their daily routines. Maps, as external representations of the environment offer intuitive ways to extend the capacities of the human cognitive systems. Operations such as planning a route can be performed on maps instead of in the environment. Question of how to design maps that support cognitive processes such as wayfinding in novel environments have been discussed in several disciplines. The research reported here addresses the question of how map alignment and the presence of landmarks in maps interact during wayfinding. For the purpose of systematically analyzing the relationship between map alignment and landmark presence, nine virtual environments were designed. Routes learned from maps with different alignments and different numbers of landmarks present at decision points were used. While generally landmarks are assumed to foster wayfinding performance, our results indicate that misaligned maps can cancel out positive effects obtained through landmarks. Numéro de notice : A2016-414 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277414Y.0000000101 En ligne : http://dx.doi.org/10.1179/1743277414Y.0000000101 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81281
in Cartographic journal (the) > Vol 53 n° 1 (February 2016) . - pp 43 - 54[article]Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 030-2016011 RAB Revue Centre de documentation En réserve L003 Disponible The role of contextual info-marks in navigating a virtual rural environment / Adam Rousell in Transactions in GIS, vol 20 n° 1 (February 2016)
[article]
Titre : The role of contextual info-marks in navigating a virtual rural environment Type de document : Article/Communication Auteurs : Adam Rousell, Auteur ; Claire Jarvis, Auteur ; Chris Brunsdon, Auteur Année de publication : 2016 Article en page(s) : pp 1 – 19 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] calcul d'itinéraire
[Termes IGN] géovisualisation
[Termes IGN] milieu rural
[Termes IGN] monde virtuel
[Termes IGN] navigation automobile
[Termes IGN] petit écran
[Termes IGN] point de repère
[Termes IGN] prise en compte du contexteRésumé : (auteur) Navigation is a task performed in both large and small scale environments. Landmarks within an environment are of great benefit to these navigational tasks, but in large rural environments such landmarks may be sparse. It has been shown that landmarks need not be purely visual and that a change in context for a feature can make it become a landmark against its surroundings (such as being provided with significant meaning). Such meaning could be added through personal experience or by informing the observer via some form of communication. To investigate the effects of providing such contextual information on navigational performance, experiments were conducted in a large rural virtual environment where the delivery method of the information was varied between onscreen and PDA display. Users were instructed to perform a route tracing navigation task. In some instances users were presented with textual information about specific locations within the environment which appeared when they were in the vicinity of the location. Both quantitative and qualitative data were collected and analyzed, with results indicating that although the actual performance in the task was not significantly improved, users felt that their performance was better and the task easier when they were presented with the contextual information. Numéro de notice : A2016-445 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12136 En ligne : http://dx.doi.org/10.1111/tgis.12136 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81353
in Transactions in GIS > vol 20 n° 1 (February 2016) . - pp 1 – 19[article]APFiLoc: An Infrastructure-Free Indoor Localization method fusing smartphone inertial sensors, landmarks and map information / Jianga Shang in Sensors, vol 15 n° 10 (October 2015)PermalinkAutomatic selection of landmarks for navigation guidance / Rui Zhu in Transactions in GIS, vol 19 n° 2 (April 2015)PermalinkGMOBench: Benchmarking generic moving objects / Jianqiu Xu in Geoinformatica, vol 19 n° 2 (April - June 2015)PermalinkLocating control points in aerial images with a multi-scale approach based on terrestrial image patches / Adilson Berveglieri in Photogrammetric record, vol 30 n° 149 (March - May 2015)PermalinkPermalinkUL-Isomap based nonlinear dimensionality reduction for hyperspectral imagery classification / Weiwei Sun in ISPRS Journal of photogrammetry and remote sensing, vol 89 (March 2014)PermalinkAnalysing landmarks in nature and elements of geospatial images to support wayfinding / Pyry Kettunen (2014)PermalinkResolution on the nomenclature of space geodetic reference points and local tie measurements / Sten Bergstrand (nov 2014)PermalinkRegistration of optical images with lidar data and its accuracy assessment / Shunyl Zheng in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 8 (August 2013)PermalinkGestalt aspects for differentiating the representation of landmarks in virtual navigation / Marcio Augusto Reolon Schmidt in Cartography and Geographic Information Science, vol 40 n° 3 (June 2013)Permalink