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Hyper redundancy for accuracy enhancement in automated close range photogrammetry / Clive Simpson Fraser in Photogrammetric record, vol 20 n° 111 (September - November 2005)  

Public [article]  inPhotogrammetric record > vol 20 n° 111 (September - November 2005) . - pp 205 - 217 Titre : Hyper redundancy for accuracy enhancement in automated close range photogrammetry Type de document : Article/Communication Auteurs : Clive Simpson Fraser, Auteur ; A. Woods, Auteur ; D. Brizzi, Auteur Année de publication : 2005 Article en page(s) : pp 205 - 217 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie terrestre [Termes IGN] acquisition de données [Termes IGN] antenne [Termes IGN] déformation d'édifice [Termes IGN] image multiple [Termes IGN] photogrammétrie métrologique [Termes IGN] photographie terrestre [Termes IGN] précision des mesures [Termes IGN] radiotélescope [Termes IGN] redondance de données [Termes IGN] visualisation 3D Résumé : (Auteur) A generic network design in close range photogrammetry is one where optimal multi-ray intersection geometry is obtained with as few camera stations as practicable. Hyper redundancy is a concept whereby, once the generic network is in place, many additional images are recorded, with the beneficial impact upon object point precision being equivalent to the presence of multiple exposures at each camera position within the generic network. The effective number of images per station within a hyper redundant network might well be in the range of 10 to 20 or more. As is apparent when it is considered that a hyper redundant network may comprise hundreds of images, the concept is only applicable in practice to fully automatic vision metrology systems, where it proves to be a very effective means of enhancing measurement accuracy at the cost of minimal additional work in the image recording phase. This paper briefly reviews the network design and accuracy aspects of hyper redundancy and illustrates the technique by way of the photogrammetric measurement of surface deformation of a radio telescope of 26 m diameter. This project required an object point measurement accuracy of = 0.065 mm, or 1/400 000 of the diameter of the reflector. Numéro de notice : A2005-377 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2005.00327.x En ligne : https://doi.org/10.1111/j.1477-9730.2005.00327.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27513 [article]

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