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Auteur Timon Behr |
Documents disponibles écrits par cet auteur (2)
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Titre : Map matching for semi-restricted trajectories Type de document : Article/Communication Auteurs : Timon Behr, Auteur ; Thomas van Dijk, Auteur ; Axel Forsch, Auteur ; Jan‐Henrik Haunert, Auteur ; Sabine Storandt, Auteur Editeur : Leibniz [Allemagne] : Schloss Dagstuhl – Leibniz-Zentrum für Informatik Année de publication : 2021 Conférence : GIScience 2021, 11th International Conference on Geographic Information Science 27/09/2021 30/09/2021 Poznań Pologne Open Access Proceedings Importance : 16 p. Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] appariement de cartes
[Termes IGN] cycliste
[Termes IGN] information sémantique
[Termes IGN] OpenStreetMap
[Termes IGN] piéton
[Termes IGN] positionnement par GPS
[Termes IGN] réseau routier
[Termes IGN] trajet (mobilité)Résumé : (auteur) We consider the problem of matching trajectories to a road map, giving particular consideration to trajectories that do not exclusively follow the underlying network. Such trajectories arise, for example, when a person walks through the inner part of a city, crossing market squares or parking lots. We call such trajectories semi-restricted. Sensible map matching of semi-restricted trajectories requires the ability to differentiate between restricted and unrestricted movement. We develop in this paper an approach that efficiently and reliably computes concise representations of such trajectories that maintain their semantic characteristics. Our approach utilizes OpenStreetMap data to not only extract the network but also areas that allow for free movement (as e.g. parks) as well as obstacles (as e.g. buildings). We discuss in detail how to incorporate this information in the map matching process, and demonstrate the applicability of our method in an experimental evaluation on real pedestrian and bicycle trajectories. Numéro de notice : C2021-081 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Communication DOI : 10.4230/LIPIcs.GIScience.2021.II.12 Date de publication en ligne : 14/09/2021 En ligne : https://doi.org/10.4230/LIPIcs.GIScience.2021.II.12 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=100939 User defined topological predicates in databases systems / Timon Behr in Geoinformatica, vol 14 n° 1 (January 2010)
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Titre : User defined topological predicates in databases systems Type de document : Article/Communication Auteurs : Timon Behr, Auteur ; Ralf Hartmut Güting, Auteur Année de publication : 2010 Article en page(s) : pp 23 - 53 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] attribut
[Termes IGN] base de données spatiotemporelles
[Termes IGN] langage de requête
[Termes IGN] prédicat
[Termes IGN] relation topologique
[Termes IGN] requête spatiale
[Termes IGN] utilisateurRésumé : (Auteur) Current database systems cannot only store standard data like integer, string, and real values, but also spatial data like points, lines, and regions. The importance of topological relationships between spatial objects has been recognized a long time ago. Using the well known 9-intersection model for describing such relationships, a lot of different topological relationships can be distinguished. For the query language of a database system, it is not desirable to have such a large number of topological predicates. Particularly the query language should not be extended by a lot of predicate names. It is desirable to build new relationships from existing ones, for example to coarse the granularity. This paper describes how a database system user can define and use her own topological predicates. We show algorithms for computing such predicates in an efficient way. Last, we compare these general versions with specialized implementations of topological predicates. Copyright Springer Numéro de notice : A2010-010 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1007/s10707-008-0075-y Date de publication en ligne : 15/01/2009 En ligne : https://doi.org/10.1007/s10707-008-0075-y Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30206
in Geoinformatica > vol 14 n° 1 (January 2010) . - pp 23 - 53[article]Exemplaires(1)
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