Robust Phase-Correlation Based Registration of Airborne Videos Using Motion Estimation Frank de Morsier, Maurice Borgeaud, Christoph Küchler, Adrian Vogel, Volker Gass and Jean-Philippe Thiran Abstract This paper presents an algorithm for near-real time registration of airborne video sequences with reference images from a different sensor type. Phase-correlation using Fourier-Melin Invariant (FMI) descriptors allow to retrieve the rigid transformation parameters in a fast and non-iterative way. The robustness to multi-sources images is obtained by an enhanced image represen- tation based on the gradient norm and by the extrapolation of registration parameters by motion estimation between frames. A phase-correlation score, indicator of the registration quality, is introduced to regulate between frame-to- reference image registration and extrapolation from previous frames only. Our Robust Phase-Correlation based registration algorithm using Motion Estimation (RPCME) is compared with a Mutual Information (MI) algorithm for the regis- tration of two different panchromatic airborne videos with Geoeye reference images. The RPCME algorithm registered most of the frames accurately, retrieving much better orientation than MI. It shows robustness and good accuracy to multisource images with the advantage of being a direct (non-iterative) method. F. de Morsier (&)  J.-P. Thiran École Polytechnique Fédérale de Lausanne, LTS 5, Lausanne, Switzerland e-mail: frank.demorsier@epfl.ch M. Borgeaud European Space Agency, ESRIN, Frascati, Italy C. Küchler  A. Vogel RUAG Schweiz AG, Emmen, Switzerland V. Gass Swiss Space Center, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland J. M. Krisp et al. (eds.), Earth Observation of Global Changes (EOGC), Lecture Notes in Geoinformation and Cartography, DOI: 10.1007/978-3-642-32714-8_3, Ó Springer-Verlag Berlin Heidelberg 2013 37