ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume V-1-2021
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., V-1-2021, 97–104, 2021
https://doi.org/10.5194/isprs-annals-V-1-2021-97-2021
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., V-1-2021, 97–104, 2021
https://doi.org/10.5194/isprs-annals-V-1-2021-97-2021

  17 Jun 2021

17 Jun 2021

MOUNTING CALIBRATION OF A MULTI-VIEW CAMERA SYSTEM ON A UAV PLATFORM

M. Mohammadi1, A. Khami2, F. Rottensteiner1, I. Neumann2, and C. Heipke1 M. Mohammadi et al.
  • 1Institute of Photogrammetry and GeoInformation, Leibniz University Hannover, Germany
  • 2Geodetic Institute Hannover, Leibniz University Hannover, Germany

Keywords: mounting calibration, multi-camera system, non-overlapping views, bundle block adjustment, UAV

Abstract. Multi-view camera systems are used more and more frequently for applications in close-range photogrammetry, engineering geodesy and autonomous navigation, since they can cover a large portion of the environment and are considerably cheaper than alternative sensors such as laser scanners. In many cases, the cameras do not have overlapping fields of view. In this paper, we report on the development of such a system mounted on a rigid aluminium platform, and focus on its geometric system calibration. We present an approach for estimating the exterior orientation of such a multi-camera system based on bundle adjustment. We use a static environment with ground control points, which are related to the platform via a laser tracker. In the experimental part, the precision and partly accuracy that can be achieved in different scenarios is investigated. While we show that the accuracy potential of the platform is very high, the mounting calibration parameters are not necessarily precise enough to be used as constant values after calibration. However, this disadvantage can be mitigated by using those parameters as observations and refining them on-the-job.