Table 1. Details of the remote sensing techniques used to survey UQL-DP56, Minyirr, south of Broome, Dampier Peninsula, Western Australia.
| Method (Photogrammetry or LASER) | Coverage area (sq m) | Data collection duration | Processing time (iMac 3.5 GHz Intel Core i5 processor, AMD Radeon R9 M290X 2048 MB Graphics) | Dense point cloud number | Point density (pt/ sq m) | Average linear distance between points (=1/(square root of [pts/sq m]) in metres | Average linear distance between points (mm) |
|---|---|---|---|---|---|---|---|
| PG-ground-based | 22.7 | 12 m | 3 h 2 m | 53,728,920 | 2,366,912.78 | 0.00065 | 0.65 |
| PG-aerial UAV photo | 44 | <1 m | 52 m | 4,128,800 | 92,991 | 0.00328 | 3.28 |
| PG-aerial UAV photo | 15,200 | 8 m | 3 h 1 m | 41,061,249 | 2,701.40 | 0.01924 | 19.24 |
| PG-aerial UAV video | 8,780 | 8 m | 2 h 21 m | 2,343,893 | 266.96 | 0.06120 | 61.20 |
| PG-aerial Plane | 124,000 | <2 m | 1 h 5 m | 4,301,633 | 34.69 | 0.16978 | 169.78 |
| LASER-ground-based | 42,062 | 2 h 49 m | 102,182,615 | 2,429.33 | 0.02029 | 20.29 | |
| LASER-aerial | 914,694 | <8 m | 52,241,139 | 57.11 | 0.13232 | 132.32 |