The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences (Jun 2019)

PRECISE AERIAL IMAGE ORIENTATION USING SAR GROUND CONTROL POINTS FOR MAPPING OF URBAN LANDMARKS

  • F. Kurz,
  • T. Krauß,
  • H. Runge,
  • D. Rosenbaum,
  • P. d’Angelo

DOI
https://doi.org/10.5194/isprs-archives-XLII-2-W13-61-2019
Journal volume & issue
Vol. XLII-2-W13
pp. 61 – 66

Abstract

Read online

Highly precise ground control points, which are globally available, can be derived from the SAR satellite TerraSAR-X. This opens up many new applications like for example the precise aerial image orientation. In this paper, we propose a method for precise aerial image orientation using spaceborne geodetic Synthetic Aperture Radar Ground Control Points (SAR-GCPs). The precisely oriented aerial imagery can then be used e.g. for mapping of urban landmarks, which support the ego-positioning of autonomous cars. The method for precise image orientation was validated based on two aerial image data sets. SAR-GCPs were measured in images, then the image orientation has been improved by a bundle-adjustment. Results based on check points show, that the accuracy of the image orientation is better than 5 cm in X and Y coordinates.