Naslov
Two-step camera calibration method developed for micro UAV's

Autori
Gašparović, Mateo ; Gajski, Dubravko

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

Izvornik
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences / Halounova, L. ; Šaafář, V. ; Toth, C. K. ; Karas, J. ; Huadong, G. ; Haala, N. ; Habib, A. ; Reinartz, P. ; Tang, X. ; Li, J. ; Armenakis, C. ; Grenzdörffer, G. ; le Roux, P. ; Stylianidis, S. ; Blasi, R. ; Menard, M. ; Dufourmount, H. ; Li, Z. - , 2016, 829-833

Skup
XXIII ISPRS Congress

Mjesto i datum
Prag, Češka Republika, 12.07.2016. - 19.07.2016

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Photogrammetry; two-step camera calibration; micro UAV; ultra wide lenses

Sažetak
The development of unmanned aerial vehicles (UAVs) and continuous price reduction of unmanned systems attracted us to this research. Professional measuring systems are dozens of times more expensive and often heavier than "amateur", non-metric UAVs.For this reason, we tested the DJI Phantom 2 Vision Plus UAV. Phantom’s smaller mass and velocity can develop less kinetic energy in relation to the professional measurement platforms, which makes it potentially less dangerous for use in populated areas. In this research, we wanted to investigate the ability of such non-metric UAV and find the procedures under which this kind of UAV may be used for the photogrammetric survey. It is important to emphasize that UAV is equipped with an ultra wide-angle camera with 14MP sensor. Calibration of such cameras is a complex process. In the research, a new two-step process is presented and developed, and the results are compared with standard one- step camera calibration procedure. Two-step process involves initially removed distortion on all images, and then uses these images in the phototriangulation with self-calibration. The paper presents statistical indicators which proved that the proposed two-step process is better and more accurate procedure for calibrating those types of cameras than standard one-step calibration. Also, we suggest two-step calibration process as the standard for ultra-wide-angle cameras for unmanned aircraft.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Geodezija

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