“…Specifically, the UAV detection tasks involve printed landmarks (Kim & Sukkarieh, 2003), smoke and fire (Campoy et al, 2009), civilian and industrial objects (Birk et al, 2011; Ellenberg et al, 2015; Jung et al, 2020; Ma et al, 2021; Medeiros et al, 2021; Pinto et al, 2021; Silva et al, 2020; Usenko et al, 2020; Yang, Li, et al, 2017), and scene changes (Nourani‐Vatani & Pradalier, 2010) detection. Other tasks contained three 3D reconstruction studies (Gee et al, 2016; Kaul et al, 2016; Wendel et al, 2012), one calculation of 3D geodetic coordinates of the target study (Li et al, 2016), and two performance analysis studies of SLAM methods (Diep et al, 2022; Hansen et al, 2022). Some researchers (Hyyppä et al, 2020) evaluated the methods of data collection in forests by handheld devices, UAV flying under the canopies, and UAV flying above the canopies, concluding that features collected by UAV flying under the canopies are more accurate.…”