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An integrated approach for visual analysis of a multisource moving objects knowledge base / N. Wllems in International journal of geographical information science IJGIS, vol 24 n° 10 (october 2010)
[article]
Titre : An integrated approach for visual analysis of a multisource moving objects knowledge base Type de document : Article/Communication Auteurs : N. Wllems, Auteur ; W. Robert, Auteur ; W. Van Hage, Auteur ; G. de Vries, Auteur ; J. Janssens, Auteur ; V. Malaisé, Auteur Année de publication : 2010 Article en page(s) : pp 1543 - 1558 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse visuelle
[Termes IGN] base de connaissances
[Termes IGN] données multisources
[Termes IGN] eaux côtières
[Termes IGN] fusion de données
[Termes IGN] littoral
[Termes IGN] navire
[Termes IGN] objet mobile
[Termes IGN] Pays-Bas
[Termes IGN] sécurité maritime
[Termes IGN] simulation d'étalonnage
[Termes IGN] trafic
[Termes IGN] trajet (mobilité)Résumé : (Auteur) We present an integrated and multidisciplinary approach for analyzing the behavior of moving objects. The results originate from an ongoing research of four different partners from the Dutch Poseidon project (Embedded Systems Institute (2007)), which aims to develop new methods for Maritime Safety and Security (MSS) systems to monitor vessel traffic in coastal areas. Our architecture enables an operator to visually test hypotheses about vessels with time-dependent sensor data and on-demand external knowledge. The system includes the following components: abstraction and simulation of trajectory sensor data, fusion of multiple heterogenous data sources, reasoning, and visual analysis of the combined data sources. We start by extracting segments of consistent movement from simulated or real-world trajectory data, which we store as instances of the Simple Event Model (SEM), an event ontology represented in the Resource Description Framework (RDF). Next, we add data from the web about vessels and geography to enrich the sensor data. This additional information is integrated with the representation of the vessels (actors) and places in SEM. The enriched trajectory data are stored in a knowledge base, which can be further annotated by reasoning and is queried by a visual analytics tool to search for spatiotemporal patterns. Although our approach is dedicated to MSS systems, we expect it to be useful in other domains. Numéro de notice : A2010-465 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658816.2010.515029 En ligne : https://doi.org/10.1080/13658816.2010.515029 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30658
in International journal of geographical information science IJGIS > vol 24 n° 10 (october 2010) . - pp 1543 - 1558[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-2010061 RAB Revue Centre de documentation En réserve L003 Disponible 079-2010062 RAB Revue Centre de documentation En réserve L003 Disponible Space-time density of trajectories : exploring spatio-temporal patterns in movement data / Urška Demšar in International journal of geographical information science IJGIS, vol 24 n° 10 (october 2010)
[article]
Titre : Space-time density of trajectories : exploring spatio-temporal patterns in movement data Type de document : Article/Communication Auteurs : Urška Demšar, Auteur ; K. Virrantaus, Auteur Année de publication : 2010 Article en page(s) : pp 1527 - 1542 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse spatio-temporelle
[Termes IGN] densité
[Termes IGN] données localisées 3D
[Termes IGN] données spatiotemporelles
[Termes IGN] estimation par noyau
[Termes IGN] exploration de données géographiques
[Termes IGN] Finlande
[Termes IGN] navire
[Termes IGN] reconstruction d'itinéraire ou de trajectoire
[Termes IGN] trajectoire (véhicule non spatial)Résumé : (Auteur) Modern positioning and identification technologies enable tracking of almost any type of moving object. A remarkable amount of new trajectory data is thus available for the analysis of various phenomena. In cartography, a typical way to visualise and explore such data is to use a space-time cube, where trajectories are shown as 3D polylines through space and time. With increasingly large movement datasets becoming available, this type of display quickly becomes cluttered and unclear. In this article, we introduce the concept of 3D space-time density of trajectories to solve the problem of cluttering in the space-time cube. The space-time density is a generalisation of standard 2D kernel density around 2D point data into 3D density around 3D polyline data (i.e. trajectories). We present the algorithm for space-time density, test it on simulated data, show some basic visualisations of the resulting density volume and observe particular types of spatio-temporal patterns in the density that are specific to trajectory data. We also present an application to real-time movement data, that is, vessel movement trajectories acquired using the Automatic Identification System (AIS) equipment on ships in the Gulf of Finland. Finally, we consider the wider ramifications to spatial analysis of using this novel type of spatio-temporal visualisation. Numéro de notice : A2010-466 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658816.2010.511223 En ligne : https://doi.org/10.1080/13658816.2010.511223 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30659
in International journal of geographical information science IJGIS > vol 24 n° 10 (october 2010) . - pp 1527 - 1542[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-2010061 RAB Revue Centre de documentation En réserve L003 Disponible 079-2010062 RAB Revue Centre de documentation En réserve L003 Disponible Spatio-temporal trajectory analysis of mobile objects following the same itinerary / Laurent Etienne (26/05/2010)
Titre : Spatio-temporal trajectory analysis of mobile objects following the same itinerary Type de document : Article/Communication Auteurs : Laurent Etienne, Auteur ; Thomas Devogele , Auteur ; Alain Bouju, Auteur Editeur : International Society for Photogrammetry and Remote Sensing ISPRS Année de publication : 26/05/2010 Collection : International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, ISSN 1682-1750 num. 38-2 Conférence : SDH 2010, 14th International Symposium on Spatial Data Handling, joint conference with ISPRS 26/05/2010 28/05/2010 Hong-Kong Hong-Kong Proceedings Springer Importance : 6 p. Format : 21 x 30 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse spatio-temporelle
[Termes IGN] comportement
[Termes IGN] exploration de données géographiques
[Termes IGN] navire
[Termes IGN] objet mobile
[Termes IGN] reconstruction d'itinéraire ou de trajectoire
[Termes IGN] trajectoire (véhicule non spatial)Résumé : (Auteur) More and more mobile objects are now equipped with sensors allowing real time monitoring of their movements. Nowadays, the data produced by these sensors can be stored in spatio-temporal databases. The main goal of this article is to perform a data mining on a huge quantity of mobile object's positions moving in an open space in order to deduce its behaviour. New tools must be defined to ease the detection of outliers. First of all, a zone graph is set up in order to define itineraries. Then, trajectories of mobile objects following the same itinerary are extracted from the spatio-temporal database and clustered. A statistical analysis on this set of trajectories lead to spatio-temporal patterns such as the main route and spatio-temporal channel followed by most of trajectories of the set. Using these patterns, unusual situations can be detected. Furthermore, a mobile object's behaviour can be defined by comparing its positions with these spatio-temporal patterns. In this article, this technique is applied to ships' movements in an open maritime area. Unusual behaviours such as being ahead of schedule or delayed or veering to the left or to the right of the main route are detected. A case study illustrates these processes based on ships' positions recorded during two years around the Brest area. This method can be extended to almost all kinds of mobile objects (pedestrians, aircrafts, hurricanes, ...) moving in an open area. Numéro de notice : C2010-047 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Communication DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVIII/part2/Papers/50_Paper.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64319 Documents numériques
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14253_ctap_isprs_vol38part2_50_paper_devogele.pdfAdobe Acrobat PDF A scheme for ship detection in inhomogeneous regions based on segmentation of SAR images / F. Zhang in International Journal of Remote Sensing IJRS, vol 29 n°19-20 (October 2008)
[article]
Titre : A scheme for ship detection in inhomogeneous regions based on segmentation of SAR images Type de document : Article/Communication Auteurs : F. Zhang, Auteur ; B. Wu, Auteur Année de publication : 2008 Article en page(s) : pp 5733 - 5747 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] détection d'objet
[Termes IGN] estuaire
[Termes IGN] Fleuve bleu (Chine)
[Termes IGN] image Envisat-ASAR
[Termes IGN] image radar
[Termes IGN] navire
[Termes IGN] objet mobile
[Termes IGN] segmentation d'imageRésumé : (Auteur) Ship detection in inhomogeneous regions using synthetic aperture radar (SAR) imagery is usually confronted with the severe heterogeneities of the oceans; this paper proposes a new detection scheme to overcome this problem. At first, an object-oriented segmentation algorithm is employed to partition the whole SAR image into several uniform regions. Then, for each partitioned region within water areas, the Kolmogorov-Smirnov test is applied to select the optimal background distribution model, and ship detection is carried out using the adaptive constant false alarm rate (CFAR) detector based on the selected probability density function. Finally, the detection results of each region are merged. An experiment based on an ENVISAT ASAR image of the Yangtze estuary show that the proposed strategy can effectively deal with heterogeneous scenarios in inhomogenous regions and greatly improves the detection results. Copyright Taylor & Francis Numéro de notice : A2008-531 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160802089887 En ligne : https://doi.org/10.1080/01431160802089887 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29601
in International Journal of Remote Sensing IJRS > vol 29 n°19-20 (October 2008) . - pp 5733 - 5747[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 080-08121 RAB Revue Centre de documentation En réserve L003 Disponible A new application for PolSAR imagery in the field of moving target indication/ship detection / C. Liu in IEEE Transactions on geoscience and remote sensing, vol 45 n° 11 Tome 1 (November 2007)
[article]
Titre : A new application for PolSAR imagery in the field of moving target indication/ship detection Type de document : Article/Communication Auteurs : C. Liu, Auteur ; H. Gierull, Auteur Année de publication : 2007 Article en page(s) : pp 3426 - 3436 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] données polarimétriques
[Termes IGN] image radar moirée
[Termes IGN] navire
[Termes IGN] objet mobile
[Termes IGN] polarimétrie radarRésumé : (Auteur) Recent analysis of a polarimetric synthetic aperture radar (PolSAR) velocity experiment has shown that azimuth ambiguities can provide useful information for the detection of moving targets with an across-track velocity component in PolSAR images using cross-polarization clutter cancellation. This paper examines this phenomenon using theoretical analysis and simulations and illustrates its application with experimental results. It is shown that, for reciprocal scatterers, the phase difference between HV and VH images is zero, whereas for HV and VH ambiguities, the phase difference is For land applications, clutter cancellation is essential for the detection of moving targets in PolSAR images. For maritime applications, it can be used to distinguish images from ambiguities. However, it is important to note that the underlying physical reasons for the performance of clutter cancellation are entirely different from ground moving target indication along-track interferometric SAR. It is also shown that cross-pol clutter cancellation is related to filtering of a double-rate-sampled single-channel SAR signal. Numéro de notice : A2007-503 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2007.907192 En ligne : https://doi.org/10.1109/TGRS.2007.907192 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28866
in IEEE Transactions on geoscience and remote sensing > vol 45 n° 11 Tome 1 (November 2007) . - pp 3426 - 3436[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-07111A RAB Revue Centre de documentation En réserve L003 Disponible Maritime GIS-applications entering the offshore world: accurate information vital in case of large vessels / R. Wevers in Geoinformatics, vol 8 n° 8 (01/12/2005)PermalinkLa Bela / Denis Guedj (2001)PermalinkNefs, galions et caraques / François Bellec (1993)PermalinkA shipborne AVHRR-HRPT receiving and image processing system for polar research / T. Viehoff in International Journal of Remote Sensing IJRS, vol 11 n° 5 (May 1990)PermalinkAn application of close range photogrammetry in shipbuilding / J. Cochrane in Photogrammetric record, vol 13 n° 73 (April - September 1989)PermalinkQuantitative remote sensing : an economic tool for the Nineties, IGARSS'89, 12ème Symposium canadien sur la Télédétection, Volume 1. Proceedings / IEEE Geoscience and remote sensing society (Etats-Unis) (1989)PermalinkQuantitative remote sensing : an economic tool for the Nineties, IGARSS'89, 12ème Symposium canadien sur la Télédétection, volume 2. Proceedings / IEEE Geoscience and remote sensing society (Etats-Unis) (1989)PermalinkQuantitative remote sensing : an economic tool for the Nineties, IGARSS'89, 12ème Symposium canadien sur la Télédétection, volume 3. Proceedings / IEEE Geoscience and remote sensing society (Etats-Unis) (1989)PermalinkQuantitative remote sensing : an economic tool for the Nineties, IGARSS'89, 12ème Symposium canadien sur la Télédétection, volume 4. Proceedings / IEEE Geoscience and remote sensing society (Etats-Unis) (1989)PermalinkQuantitative remote sensing : an economic tool for the Nineties, IGARSS'89, 12ème Symposium canadien sur la Télédétection, volume 5. Proceedings / IEEE Geoscience and remote sensing society (Etats-Unis) (1989)PermalinkParticulate concentrations in lake St-Clair as recorded by a shipborne multispectral optical monitoring system / R.P. Bukata in Remote sensing of environment, vol 25 n° 2 (01/07/1988)PermalinkTopométrie spatiale à courte distance : la mise en place de cuves dans les navires méthaniers / R. Vincent in XYZ, n° 11 (juin - août 1982)PermalinkMesure photogrammétrique de la vitesse du pétrolier Magdala remorqué dans le port de Saint-Nazaire / Maurice Carbonnell in Bulletin d'information de l'Institut géographique national, n° 7 (octobre 1968)Permalink