Camera calibration approaches using single images of man-made objects

dc.contributor.author	Γραμματικόπουλος, Λάζαρος	el
dc.contributor.author	Καρράς, Γιώργος	el
dc.contributor.author	Πέτσα, Έλλη	el
dc.date.accessioned	2015-01-29T10:06:31Z
dc.date.available	2015-01-29T10:06:31Z
dc.date.issued	2015-01-29
dc.identifier.uri	http://hdl.handle.net/11400/5027
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	Non-Metric
dc.subject	Calibration
dc.subject	Orientation
dc.subject	Single-Image Techniques
dc.subject	Geometry
dc.subject	Algorithms
dc.subject	Accuracy
dc.subject	Βαθμονόμηση
dc.subject	Γεωμετρία
dc.subject	Αλγόριθμοι
dc.subject	Προσανατολισμός
dc.subject	Ακρίβεια
dc.title	Camera calibration approaches using single images of man-made objects	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.keywordURI	http://lod.nal.usda.gov/2177
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	2003-09-30
heal.bibliographicCitation	Grammatikopoulos, L., Karras, G. and Petsa, E. (2003). Camera calibration approaches using single images of man-made objects. XIX CIPA International Symposium, Antalya, Turkey, 30/09-4/10/2003, pp. 328-332. Available from: http://cipa.icomos.org/fileadmin/template/doc/antalya/92.pdf.	en
heal.abstract	Single image techniques may be very useful for heritage documentation purposes, not only in the particular instances of damaged or destroyed objects but also as auxiliary means for a basic metric reconstruction. In the general case, single images have unknown in-terior orientation, thus posing the fundamental question of camera calibration (as in several cases no ground control is available). To this end, the known – or assumed – geometry of imaged man-made objects may be exploited. Recovery of the three main elements of interior orientation, together with image attitude, requires the existence on the image of lines in three known non-coplanar directions, typically orthogonal to each other (from the lines, radial lens distortion might also be estimated). Several approaches have been re-ported for the exploitation of this basic image geometry; however, the expected accuracy has not been adequately investigated. In this contribution, three alternative algorithms are presented, based: on the direct use of the three basic image vanishing points; on the use of image line parameters; and on the direct use of image point observations. The integration of radial distortion into the algorithms is also presented. The reported results are evaluated, and promising conclusions are drawn regarding the performance and limitations of such camera calibration methods, as compared to self-calibrating bundle adjustment techniques based on control points.	en
heal.fullTextAvailability	true
heal.conferenceName	XIX CIPA International Symposium	en
heal.conferenceItemType	full paper