Nonlocal InSAR Filtering for DEM Generation and Addressing the Staircasing Effect

Conference: EUSAR 2016 - 11th European Conference on Synthetic Aperture Radar
06/06/2016 - 06/09/2016 at Hamburg, Germany

Proceedings: EUSAR 2016

Pages: 4Language: englishTyp: PDF

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Baier, Gerald; Lachaise, Marie; Breit, Helko (German Aerospace Center, Germany)
Zhu, Xiao Xiang; Bamler, Richard (German Aerospace Center & Technical University of Munich, Germany)

A nonlocal InSAR filter is proposed that avoids the staircasing effect, which is especially troubling for DEM generation as it leads to terrace-like artifacts for hilly terrain. The sources of the staircasing effect for InSAR filtering are presented and the proposed filter is evaluated with simulations and test data, which show that the noise reduction and detail preservation are comparable to a state of the art nonlocal filter.