Naslov
The impact of approximate camera calibration parameters on the accuracy of 3D-reconstruction

Autori
Gajski, Dubravko ; Krtalić, Andrija ; Maurer, Dubravka

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
19th International Multidisciplinary Scientific GeoConference SGEM 2019 - Conference Proceedings : Geodesy and Mine Surveying – Photogrammetry and Remote Sensing – Cartography and GIS / - Sofija : International Multidisciplinary Scientific GeoConferences (SGEM), 2019, 663-670

ISBN
978-151-088992-7

Skup
19th International Multidisciplinary Scientific GeoConference (SGEM 2019)

Mjesto i datum
Sofija, Bugarska, 30.06.2019. - 06.07.2019

Vrsta sudjelovanja
Ostalo

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
SfM ; MVS ; camera calibration ; 3D-reconstruction

Sažetak
Spatial 3D-reconstruction applications today use mostly fully automated methods based on Structure from Motion (SfM) and Multi-View Stereo (MVS) algorithms. In these cases it is emphasized that the camera calibration parameters can be approximate, i.e. downloaded from EXIF data or even avoided, to facilitate the use of uncalibrated cameras in everyday measuring tasks. However, the accuracy of the spatial reconstruction of the model, recorded with an uncalibrated camera can be significantly reduced. Especially if the number of control points is limited, serving only to determine the correct model scale. Sometimes, the orientation points are entirely omitted (which is also allowed in the reconstruction procedure) making the determination of the proper model scale almost impossible. In this paper, the impact of the accuracy of the predetermined camera calibration parameters on the accuracy of 3D models will be explored and presented. The impact of different shooting arrangements as well as the influence of control points and control lengths will be analyzed to minimize the effects of insufficiently known initial camera calibration elements.

Izvorni jezik
Engleski

Znanstvena područja
Geodezija

POVEZANOST RADA