The photogrammetry is a relief technique that allows acquiring the metric data of an object (shape and position) through the acquisition and analysis of a pair of aerial photos. Through the techniques of analysis of stereoscopic images it is possible to identify the spatial position of all points of interest of the considered object. This technique, although originally created to be used in the architectural survey, it is currently used mostly for geological and geomorphological surveying.
The photogrammetric laboratory is equipped with the classic stereoscopic optical system and a 3D visualization of digital aerial photos. The institute possesses a catalog of about 1000 analogue aerial images at different scales from the beginning of the 1950s up to the latest digital aerial strips that cover almost the entire territory of the Canton Ticino presenting the state-of-the-art in Switzerland detection photogrammetry.