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Automated metric calibration of colour digital cameras / S. Cronk in Photogrammetric record, vol 21 n° 116 (December 2006 - February 2007)  

Public [article]  inPhotogrammetric record > vol 21 n° 116 (December 2006 - February 2007) . - pp 355 - 372 Titre : Automated metric calibration of colour digital cameras Type de document : Article/Communication Auteurs : S. Cronk, Auteur ; Clive Simpson Fraser, Auteur ; H. Hanley, Auteur Année de publication : 2006 Article en page(s) : pp 355 - 372 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] aberration chromatique [Termes IGN] automatisation [Termes IGN] caméra numérique [Termes IGN] compensation par faisceaux [Termes IGN] étalonnage de chambre métrique [Termes IGN] image en couleur [Termes IGN] image RVB [Termes IGN] orientation externe [Termes IGN] orientation relative Résumé : (Auteur) Consumer-grade digital cameras have become commonplace and with calibration there is significant potential for their use in photogrammetric applications. This paper describes a new method for automatic camera calibration, which is suited to colour digital cameras. Two innovations are central to the developed process. The first is exploitation of RGB colour attributes in the design of automatically detected and identified coded targets. The second is a new approach to initial value determination for relative orientation, which then supports fully automatic initial network exterior orientation and subsequent bundle adjustment with self-calibration. Accuracy aspects are also touched upon and the impact of chromatic aberration is discussed. Finally, an example of the automatic calibration process, which is implemented in the iWitness system, is presented for the case of multiple zoom settings of a consumer-grade digital camera. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2006-542 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2006.00380.x En ligne : https://doi.org/10.1111/j.1477-9730.2006.00380.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28265 [article]

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