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Title: Camera calibration approaches using single images of man-made objects
Authors: Γραμματικόπουλος, Λάζαρος
Καρράς, Γιώργος
Πέτσα, Έλλη
Item type: Conference publication
Conference Item Type: Full Paper
Keywords: Non-Metric;Calibration;Orientation;Single-Image Techniques;Geometry;Algorithms;Accuracy;Βαθμονόμηση;Γεωμετρία;Αλγόριθμοι;Προσανατολισμός;Ακρίβεια
Subjects: Technology
Issue Date: 29-Jan-2015
Date of availability: 29-Jan-2015
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.
Language: English
Citation: 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:
Conference: XIX CIPA International Symposium
Access scheme: Publicly accessible
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
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