Digital

Wissenschaftliche Publikation

Advanced DTM generation from very high resolution satellite stereo images

Publikation aus Digital

DI Dr. Karlheinz Gutjahr, Univ.-Prof. Dipl.-Forstw. Dr. Mathias Schardt

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume II-3/W4, 2015 PIA15+HRIGI15 ??? Joint ISPRS conference 2015, 25???27 March 2015, Munich, Germany , 1/2015

Abstract:

This work proposes a simple filtering approach that can be applied to digital surface models in order to extract digital terrain models.  The method focusses on robustness and computational efficiency and is in particular tailored to filter DSMs that are extracted from  satellite stereo images. It represents an evolution of an existing DTM generation method and includes distinct advancement through  the integration of multi-directional processing as well as slope dependent filtering, thus denoted MSD filtering. The DTM  generation workflow is fully automatic and requires no user interaction. Exemplary results are presented for a DSM generated from a  Pliades tri-stereo image data set. Qualitative and quantitative evaluations with respect to highly accurate reference LiDAR data confirm the effectiveness of the proposed algorithm.