Monitoring of Rock Slope Deformations Using Feature to Feature Super Voxel-Based Spatial Smoothing and Image Correlation

Kurzfassung

Rock slope deformation processes pose persistent hazards in mountainous regions. This study conducted a Terrestrial Laser Scanning (TLS) monitoring of two slope deformations located in Tyrol (Austria). After the acquisition of 3D point clouds by TLS 3D displacement vectors are derived using Feature to Feature Super Voxel-based Spatial Smoothing (F2S3) as well as Image Correlation (IMCORR). Both methods were compared in terms of their applicability for the monitoring of rock slope deformation at the sites Steinlehnen (Sellrain) and Malgrube (Oberberg). Significant displacement with a maximum of 1.1 m could be measured at the Steinlehnen site, and 2 m at the Malgrube site. IMCORR has shown to be best applicable for a first overview over larger areas of interest while F2S3 shows advantages in terms of the real 3D component of displacements