In fact with the technique TLS scans are performed to evaluate the stability and degradation of valuable buildings or architectural structures in general and for the monitoring of areas of land affected by hydrogeological instability and alterations of surface. In addition, technology of relief in the point cloud, is applied for some time in the industry for the creation of models and for quality control of mechanical pieces.
The principle of operation of the TLS range marker provides a laser beam, deflected on angular positions calibrated by using a system of mirrors oscillating and rotating, which makes a real surface scan neatly observed by illuminating a large number of elements.
For each laser pulse sent and received time is measured and calculated the distance.
Furthermore, the intensity of the return signal to characterize the materials used since the reflectivity is dependent on the roughness of the same.In this manner it is possible to derive the coordinates X, Y, Z of the point invested by the laser beam as well as the values of the colorimetric scale R, G, B (Red, Green, Blue) and the reflectance orReflectivity, ie the amount of energy reflected from the same point in relation to the energy emitted by the laser.
the interactive graphic software Leica Cyclone governs data laser scanner is urilizzato for refereziare size, reference axes, reference systems and 3D processing of clouds detected by existing buildings, land, rocks and ambient relief.