overlap_025_050_diff Published April 26, 2019 at 1912 × 1359 in Smooth DTM from Drone LiDAR off Velodyne HDL 32A mounted on DJI M600 UAV ← Previous Next → Difference of the lowest points for each square foot covered by multiple flight lines: differences of less than a quarter of a foot are white, differences of more than half a foot are saturated red or blue.