Geodetski vestnik . Vol 64 n° 1Paru le : 01/03/2020 |
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139-2020011 | RAB | Revue | Centre de documentation | En réserve L003 | Disponible |
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Ajouter le résultat dans votre panier3D laser scanning of the natural caves: Example of Škocjanske jame / Richard Walters in Geodetski vestnik, Vol 64 n° 1 (March - May 2020)
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Titre : 3D laser scanning of the natural caves: Example of Škocjanske jame Type de document : Article/Communication Auteurs : Richard Walters, Auteur ; Nadja Zupan Hajna, Auteur Année de publication : 2020 Article en page(s) : 15 p. Note générale : bibliographie Langues : Anglais (eng) Slovène (slv) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] 3DReshaper
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] grotte
[Termes IGN] image captée par drone
[Termes IGN] instrument embarqué
[Termes IGN] lasergrammétrie
[Termes IGN] modèle numérique de terrain
[Termes IGN] semis de points
[Termes IGN] site historique
[Termes IGN] SlovénieRésumé : (auteur) In this article, we present issues arising from Terrestrial Laser Scanning of large natural caves using the example of Škocjan Caves, a UNESCO World Heritage Site. Regarding pre-existing tachymetric survey of the passages and volumes calculated from them, the scanning of such a large cave was an even bigger challenge for the team. The cave of almost 6 km long passages with dimensions approx. 30 m x 40 m and max. heights up to 145 m, was scanned from 370 stations. Process of surveying the cave, involves establishing scanner positions through the cave, where scans will overlap, in a progressive route and once back on the surface, collecting, cleaning and stitching the scans into a point cloud 3D model. A total of 8.3 billion points were captured and 2,600 high-resolution photos taken. With Reigl’s RiSCAN Pro software, a point cloud model was registered and then exported to Hexagon’s 3D Reshaper to create a full surface model from which all measurements and calculations were made. Additionally, data acquisition using a camera on an unmanned airborne vehicle was used. By photogrammetric approach, digital terrain model of a surface was built and then tied to the cave model within 3D Reshaper. The resulting high resolution - point cloud model may be used for various purposes such as: volume calculations, detection of geological and speleogenetical features, etc. With a volume of 2.55 million cubic metres, Martel’s Chamber is confirmed to be the 11th largest cave chamber in the world at the moment. Numéro de notice : A2020-275 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.15292/geodetski-vestnik.2020.01.89-103 Date de publication en ligne : 12/03/2020 En ligne : https://doi.org/10.15292/geodetski-vestnik.2020.01.89-103 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96088
in Geodetski vestnik > Vol 64 n° 1 (March - May 2020) . - 15 p.[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 139-2020011 RAB Revue Centre de documentation En réserve L003 Disponible