hovermap_ground_versus_ground_thick_versus_ground_median Published April 15, 2018 at 1000 × 600 in First Look with LAStools at LiDAR from Hovermap Drone by CSIRO ← Previous Next → Top: Green points are low ground. Orange points are thick ground with 5 cm drop lines. Middle: Brown points are median ground computed from thick ground. Bottom: Comparing low ground points in green with median ground points in brown.