“…In order to find new solutions for automating crop-monitoring activities, several types of sensors (including LiDAR and OptRx™) have been tested by several authors. The LiDAR (Light Detection and Ranging) sensor is able to assess the canopy volume via the emission of a laser beam (Bietresato et al, 2016;, while active light sensors are able to provides information about the status of the crop (Mazzetto et al, 2010;D'Auria et al, 2016). Active optical sensors, such as OptRx™, are able to generate a light at three known wavelengths (670, 730, and 780 nm) and record the light reflected by the target.…”