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hal.structure.identifierInstitut de Recherche de l'Ecole Navale [IRENAV]
dc.contributor.authorYAN, Jingya
hal.structure.identifierDépartement des sciences géomatiques [SCG]
dc.contributor.authorGUILBERT, Eric
hal.structure.identifierInstitut de Recherche de l'Ecole Navale [IRENAV]
dc.contributor.authorSAUX, Eric
dc.date.accessioned2021-05-14T09:58:56Z
dc.date.available2021-05-14T09:58:56Z
dc.date.issued2014-10
dc.date.conference2014-10
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/77991
dc.descriptionOn nautical charts, undersea features are portrayed by sets of soundings (depth points) and isobaths (depth contours) from which map readers can interpret landforms. Different techniques were developed for automatic soundings selection and isobath generalisation from a sounding set. These methods are mainly used to generate a new chart from the bathymetric database or from a large scale chart through selection and simplification however a part of the process consists in selecting and emphasising undersea features on the chart according to their relevance to navigation. Its automation requires classification of the features from the set of isobaths and soundings and their generalisation through the selection and application of a set of operators according not only to geometrical constraints but also to semantic constraints.The objective of this paper is to define an ontology formalising undersea feature representation and the generalisation process achieving this representation on a nautical chart. The ontology is built in two parts addressing on one hand the definition of the features and on the other hand their generalisation. The central concept is the undersea feature around which other concepts are organised. The generalisation process is driven by the features where the objective is to select or emphasise information according to their meaning for a specific purpose. The ontologies were developed in Protégé and a bathymetric database server integrating the ontology wasimplemented. A generalisation platform was also developed and examples of representations obtained by the platform are presented. Finally, current results and on-going research are discussed.
dc.description.abstractEnOn nautical charts, undersea features are portrayed by sets of soundings (depth points) and isobaths (depth contours) from which map readers can interpret landforms. Different techniques were developed for automatic soundings selection and isobath generalisation from a sounding set. These methods are mainly used to generate a new chart from the bathymetric database or from a large scale chart through selection and simplification however a part of the process consists in selecting and emphasising undersea features on the chart according to their relevance to navigation. Its automation requires classification of the features from the set of isobaths and soundings and their generalisation through the selection and application of a set of operators according not only to geometrical constraints but also to semantic constraints.The objective of this paper is to define an ontology formalising undersea feature representation and the generalisation process achieving this representation on a nautical chart. The ontology is built in two parts addressing on one hand the definition of the features and on the other hand their generalisation. The central concept is the undersea feature around which other concepts are organised. The generalisation process is driven by the features where the objective is to select or emphasise information according to their meaning for a specific purpose. The ontologies were developed in Protégé and a bathymetric database server integrating the ontology wasimplemented. A generalisation platform was also developed and examples of representations obtained by the platform are presented. Finally, current results and on-going research are discussed.
dc.language.isoen
dc.source.titleInternational Society for Photogrammetry and Remote Sensing (ISPRS) Annals, ISPRS Technical Commission II on Theory and Concepts of Spatial Information Science
dc.subject.enCartography
dc.subject.enBathymetry
dc.subject.enGeneralization
dc.subject.enRepresentation
dc.subject.enDEM/DTM
dc.title.enAn ontology for the generalization of the bathymetry on nautical charts
dc.typeCommunication dans un congrès avec actes
dc.subject.halInformatique [cs]/Modélisation et simulation
bordeaux.page1-7
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.countryCA
bordeaux.title.proceedingInternational Society for Photogrammetry and Remote Sensing (ISPRS) Annals, ISPRS Technical Commission II on Theory and Concepts of Spatial Information Science
bordeaux.conference.cityToronto
bordeaux.peerReviewedoui
hal.identifierhal-01081724
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01081724v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=International%20Society%20for%20Photogrammetry%20and%20Remote%20Sensing%20(ISPRS)%20Annals,%20ISPRS%20Technical%20Commission%20II%20on%20Theory%20and%20Concepts%20of%20S&rft.date=2014-10&rft.spage=1-7&rft.epage=1-7&rft.au=YAN,%20Jingya&GUILBERT,%20Eric&SAUX,%20Eric&rft.genre=proceeding


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