0379-3982 0379-3982 S0379-39822018000400133 10.18845/tm.v31i4.3972 Costa Rica Costa Rica Costa Rica Costa Rica 00 12 2018 00 12 2018 31 4 133 141

(1) 2018 4 31 31 1659-3383 (2) 2009 (3) 2016 20-2 (4) 2017 (5) Paparazzi (6) Ardupilot Project (7) 2016 (8) Agisoft