Metric information from single uncalibrated images

dc.contributor.author	Καρράς, Γιώργος	el
dc.contributor.author	Πέτσα, Έλλη	el
dc.date.accessioned	2015-01-28T18:50:53Z
dc.date.available	2015-01-28T18:50:53Z
dc.date.issued	2015-01-28
dc.identifier.uri	http://hdl.handle.net/11400/4955
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.subject	Camera calibration
dc.subject	Lines
dc.subject	Camera orientation
dc.subject	Object reconstruction
dc.subject	Βαθμονόμηση μηχανής λήψης
dc.subject	Προσανατολισμός μηχανής λήψης
dc.subject	Ανακατασκευή αντικειμένου
dc.subject	Γραμμές
dc.title	Metric information from single uncalibrated images	en
heal.type	conferenceItem
heal.classification	Technology
heal.classification	Photogrammetry
heal.classification	Τεχνολογία
heal.classification	Φωτογραμμετρία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85133147
heal.classificationURI	http://skos.um.es/unescothes/C02980
heal.classificationURI	N/A-Τεχνολογία
heal.classificationURI	N/A-Φωτογραμμετρία
heal.language	en
heal.access	free
heal.recordProvider	Τ.Ε.Ι. Αθήνας, Σχολή Τεχνολογικών Εφαρμογών, Τμήμα Μηχανικών Πληροφορικής και Μηχανικών Τοπογραφίας & Γεωπληροφορικής	el
heal.publicationDate	1999-10-03
heal.bibliographicCitation	Karras, G. and Petsa, E. (1999). Metric information from single uncalibrated images. XVII CIPA International Symposium, Olinda, 3-6/10/1999. Available from: http://portal.survey.ntua.gr/main/labs/photo/staff/gkarras/Karras_Cipa_1999.pdf	en
heal.abstract	In cases of damaged or destroyed buildings, single images can be a basic or the only witness available for documenta-tion, restoration or reconstruction. Such images have mostly not been taken for purpose of geometric documentation. Thus, it is usually not possible to employ standard photogrammetric techniques. This contribution addresses the ‘unfa-vourable’ case of single images with no available information on camera/image geometry and without geodetic control. It is merely assumed that directions are identified on the object (defining three vanishing points). Line photogrammetry is used to estimate the main interior orientation parameters and the rotational matrix, which provide basic information for 3D reconstruction. The approach is investigated with test images. A practical example, referring to the Athens Municipal Theater demolished some sixthy years ago, is also included. It is concluded that, in principle, careful treatment of single images allows in such cases to extract their inscribed metric information with ‘reasonable’ accuracy.	en
heal.fullTextAvailability	true
heal.conferenceName	XVII CIPA International Symposium	en
heal.conferenceItemType	full paper