Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXVIII-5/W12, 151-155, 2011
https://doi.org/10.5194/isprsarchives-XXXVIII-5-W12-151-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
 
03 Sep 2012
GEO-REFERENCED MAPPING USING AN AIRBORNE 3D TIME-OF-FLIGHT CAMERA
T. K. Kohoutek1, M. Nitsche2, and H. Eisenbeiss1 1Institute of Geodesy and Photogrammetry, Swiss Federal Institute of Technology ETH, 8093 Zurich, Switzerland
2Mountain Hydrology and Torrents Unit, WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland
Keywords: Range Imaging, UAV, real time, 3D geometric mapping, elevation model Abstract. This paper presents the first experience of a close range bird's eye view photogrammetry with range imaging (RIM) sensors for the real time generation of high resolution geo-referenced 3D surface models. The aim of this study was to develop a mobile, versatile and less costly outdoor survey methodology to measure natural surfaces compared to the terrestrial laser scanning (TLS). Two commercial RIM cameras (SR4000 by MESA Imaging AG and a CamCube 2.0 by PMDTechnologies GmbH) were mounted on a lightweight crane and on an unmanned aerial vehicle (UAV). The field experiments revealed various challenges in real time deployment of the two state-of-the-art RIM systems, e.g. processing of the large data volume. Acquisition strategy and data processing and first measurements are presented. The precision of the measured distances is less than 1 cm for good conditions. However, the measurement precision degraded under the test conditions due to direct sunlight, strong illumination contrasts and helicopter vibrations.
Conference paper (PDF, 931 KB)


Citation: Kohoutek, T. K., Nitsche, M., and Eisenbeiss, H.: GEO-REFERENCED MAPPING USING AN AIRBORNE 3D TIME-OF-FLIGHT CAMERA, Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXVIII-5/W12, 151-155, https://doi.org/10.5194/isprsarchives-XXXVIII-5-W12-151-2011, 2011.

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