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Proceedings Paper

Completely optical orientation determination for an unstabilized aerial three-line camera
Author(s): Jürgen Wohlfeil
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Paper Abstract

Aerial line cameras allow the fast acquisition of high-resolution images at low costs. Unfortunately the measurement of the camera's orientation with the necessary rate and precision is related with large effort, unless extensive camera stabilization is used. But also stabilization implicates high costs, weight, and power consumption. This contribution shows that it is possible to completely derive the absolute exterior orientation of an unstabilized line camera from its images and global position measurements. The presented approach is based on previous work on the determination of the relative orientation of subsequent lines using optical information from the remote sensing system. The relative orientation is used to pre-correct the line images, in which homologous points can reliably be determined using the SURF operator. Together with the position measurements these points are used to determine the absolute orientation from the relative orientations via bundle adjustment of a block of overlapping line images. The approach was tested at a flight with the DLR's RGB three-line camera MFC. To evaluate the precision of the resulting orientation the measurements of a high-end navigation system and ground control points are used.

Paper Details

Date Published: 13 October 2010
PDF: 10 pages
Proc. SPIE 7826, Sensors, Systems, and Next-Generation Satellites XIV, 78261F (13 October 2010); doi: 10.1117/12.865050
Show Author Affiliations
Jürgen Wohlfeil, Humboldt-Univ. zu Berlin (Germany)
German Aerospace Ctr. (Germany)


Published in SPIE Proceedings Vol. 7826:
Sensors, Systems, and Next-Generation Satellites XIV
Roland Meynart; Steven P. Neeck; Haruhisa Shimoda, Editor(s)

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