Analysis and validation of high-resolution satellite DEMs generated from EROS-B data for montaguto landslide

Main goal of this work has been to evaluate the accuracy of digital surface models (DEMs) extracted from in-track EROS-B high resolution satellite stereo imagery. The ability to capture high-resolution stereoscopic images can produce DEMs that are useful in different applications, especially environmental monitoring and mapping. This paper illustrates the results achieved during an experimental campaign for monitoring the Montaguto landslide area in Campania Region, Italy, through the use of stereo EROS-B imagery. The extraction of DEMs has been made using two commercial software: Leica Photogrammetry Suite (LPS) and PCI Geomatica, equipped with the orbital model of EROS-B satellite. The extracted DEMs were compared with those obtained by a LiDAR (Light Detection And Ranging) system and through classical aerial photogrammetry. Both software packages have highlighted an excellent quality in DEM extraction from EROS-B panchromatic images. Good results and an overall satisfactory performance are shown when a comparison with LiDAR data and the Regional Technical Chart (CTR) is done in terms of altitude differences and topographic profiles.