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Automatic tie-point extraction / Z. Shragai in GIM international, vol 26 n° 4 (April 2012)

Public [article]  inGIM international > vol 26 n° 4 (April 2012) . - pp 31 - 35 Titre : Automatic tie-point extraction Type de document : Article/Communication Auteurs : Z. Shragai, Auteur ; S. Barnea, Auteur ; A. Even-Paz, Auteur Année de publication : 2012 Article en page(s) : pp 31 - 35 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] aérotriangulation numérique [Termes IGN] extraction automatique [Termes IGN] points homologues [Termes IGN] recouvrement d'images Résumé : (Auteur) One of the most complex and time-consuming tasks in the photogrammetric workflow is the extraction of corresponding points in two or more overlapping images. This is the first stage of aerial triangulation and block adjustment aimed at computing the positions of the projection centre and orientation of each image. Automating the extraction of these so-called 'tie-point' can be challenging, especially when non-standard approaches such as cameras mounted on UAVs or oblique imagery are used. The authors present a novel matching method able to handle the most challenging imagery. Numéro de notice : A2012-152 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31599 [article]

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061-2012041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Evolution of clusters in dynamic point patterns: with a case study of ants' simulation / Maxim Shoshany in International journal of geographical information science IJGIS, vol 21 n° 6-7 (july 2007)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 21 n° 6-7 (july 2007) . - pp 777 - 797 Titre : Evolution of clusters in dynamic point patterns: with a case study of ants' simulation Type de document : Article/Communication Auteurs : Maxim Shoshany, Auteur ; A. Even-Paz, Auteur ; Shlomo Bekhor, Auteur Année de publication : 2007 Article en page(s) : pp 777 - 797 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique [Termes IGN] Insecta [Termes IGN] programmation linéaire [Termes IGN] regroupement de points [Termes IGN] SIG dynamique [Termes IGN] simulation Résumé : (Auteur) Recent developments in sensing and tracking technologies have enabled large geographical databases to be established that represent spatial dynamics of 'behavioral entities'. Within this type of dynamics there are several levels and modes of organization that need to be revealed. Clusters are high-level groupings of entities, where change in their location and form, including split and merge events, represents self-organization and functioning patterns. Such information may contribute for better understanding spatially complex dynamic patterns. The main objective of this article is to develop an adaptable methodology that facilitates exploration of spatial order and processes in point pattern dynamics. The approach presented here utilizes data-clustering at each snapshot of the moving pattern, and then involves pairwise linking between the clusters identified at each snapshot and those identified in the following snapshot. Such linking is based on a new methodology that defines well globally optimized solutions for numerous possible linking combinations based on Linear Programming. A preliminary assessment of the approach was conducted with an existing Ants' simulation tool, capable of creating data sets covering in detail a substantial portion of the nest's life cycle. Copyright Taylor & Francis Numéro de notice : A2007-271 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/13658810601169881 En ligne : https://doi.org/10.1080/13658810601169881 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28634 [article]

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079-07041	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-07042	RAB	Revue	Centre de documentation	En réserve L003	Disponible