Terrestrial Scanning / Topography & Monitoring

Ca’ di Malta landslide near Bologna, Italy 12.10.2004

Photogrammetry and laser scanning are comparable surveying techniques to generate - without object contact and with a precision commensurate with scale - Digital Terrain Models (DTMs), a fundamental tool todetect, classify and monitoring landslides. 3D reconstruction of the terrain with terrestrial laser scanning methods is a modern way to reproduce the natural surface of the ground with high accuracy and high automation. The present work describes the terrestrial laser scanning and photogrammetric surveys realised on a small landslide body located on the Northern Apennines in Italy (municipality of Vergato, Bologna), an interesting case in order to test the laser scanning capabilities and the procedure of laser data processing, also in comparison with photogrammetry.