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Compensation of measurement errors caused by glass refraction for photogrammetric plantar surface mapping / Jasim Ahmed Ali Al-Baghdadi in Photogrammetric record, vol 28 n° 143 (September - November 2013)  

Public [article]  inPhotogrammetric record > vol 28 n° 143 (September - November 2013) . - pp 261 - 275 Titre : Compensation of measurement errors caused by glass refraction for photogrammetric plantar surface mapping Type de document : Article/Communication Auteurs : Jasim Ahmed Ali Al-Baghdadi, Auteur ; Albert K. Chong, Auteur ; Duaa Alshadli, Auteur Année de publication : 2013 Article en page(s) : pp 261 - 275 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] compensation [Termes IGN] données localisées 3D [Termes IGN] erreur de mesure [Termes IGN] médecine humaine [Termes IGN] réfraction Résumé : (Auteur) Mapping the human plantar (sole) surface during movement using an optical imaging technique often necessitates the use of a stage made of transparent material so that the human subject's gait can be imaged in a natural way, without obstruction. This research investigates a technique to reduce glass refraction distortion in the captured 3D spatial data. Impurities in the glass produce outliers in the calculated distortion values which were detected using an automated slope gradient technique. A point-based moving averaging technique was utilised to determine the most appropriate distortion correction to replace the removed outliers. The results show that the empirical methods developed provide accurate glass refraction corrections for photogrammetric measurements, highlighted using the 3D foot plantar surface captured during various phases of a person's gait. Numéro de notice : A2013-501 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/phor.12019 Date de publication en ligne : 04/06/2013 En ligne : https://doi.org/10.1111/phor.12019 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32639 [article]

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