Laser scanner

In the last decade there has been an increasing interest in exploiting the Terrestrial Laser Scanning (TLS) data for deformation measurement and monitoring purposes. This concerns both engineering geodesy measurement tasks and, thanks to the capabilities of long-range TLS, other relevant geological and geotechnical applications, like landslide monitoring. This interest is certainly due to the key advantages of TLS, such as the direct measurement of 3D coordinates, the high degree of automation, the easy-to-use hardware, and the massive sampling capability, which can be exploited to counter-balance the relatively poor quality of the single TLS points.

Our experience with TLS has been focused on the exploitation of such data for deformation measurement and monitoring purposes. The outcomes of our work is described in several papers, e.g. see Monserrat el al. (2007) and Monserrat el al. (2008).

TLS_Fig_1

Analysis of a landslide case study located in the Central Pyrenees (Spain).

TLS_Fig_2

TLS intensity image acquired during an experiment.

References
Monserrat O., Jaszczak P., Crosetto M. 2007. A new approach for deformation measurement using terrestrial laser scanner data. Proceedings of the 7th Geomatic Week, Barcelona, 20-23 February 2007. Invited paper of the Galahad workshop on landslides, 21st of February 2007.

Monserrat O., Crosetto M., 2008. Deformation measurement using terrestrial laser scanning data and least squares 3D surface matching. ISPRS Journal, Volume 63, Issue 1, January 2008, Pages 142-154, doi:10.1016/j.isprsjprs.2007.07.008.