Mefjellet
Connected component size 99%
24 February 2022
Survey Data
Fig. 1. Camera locations and image overlap.
Camera Model | Resolution | Focal Length | Pixel Size | Precalibrated |
NIKON D800 (50mm) | 4924 x 7374 | 50 mm | 4.88 x 4.88 μm | No |
Table 1. Cameras.
Camera Calibration
Fig. 2. Image residuals for NIKON D800 (50mm).
NIKON D800 (50mm)
40 images
Value | Error | F | B1 | B2 | K1 | K2 | K3 | P1 | P2 | |
F | 10549.2 | 0.63 | 1.00 | -0.76 | 0.30 | 0.06 | 0.07 | -0.04 | -0.04 | -0.18 |
B1 | 24.6775 | 0.52 | 1.00 | -0.14 | -0.02 | -0.02 | 0.01 | -0.10 | 0.23 | |
B2 | -23.2468 | 0.47 | 1.00 | 0.03 | 0.01 | -0.02 | -0.35 | 0.02 | ||
K1 | -0.109129 | 8.2e-05 | 1.00 | -0.92 | 0.86 | 0.01 | -0.03 | |||
K2 | 0.0778475 | 0.001 | 1.00 | -0.98 | -0.07 | -0.05 | ||||
K3 | 0.178184 | 0.004 | 1.00 | 0.06 | 0.02 | |||||
P1 | 0.000367804 | 7.8e-06 | 1.00 | 0.38 | ||||||
P2 | 0.000380827 | 1e-05 | 1.00 |
Table 2. Calibration coefficients and correlation matrix.
Camera Locations
Fig. 3. Camera locations and error estimates.
Z error is represented by ellipse color. X,Y errors are represented by ellipse shape.
Estimated camera locations are marked with a black dot.
X error (m) | Y error (m) | Z error (m) | XY error (m) | Total error (m) |
6.28389 | 6.0606 | 9.81139 | 8.7303 | 13.1332 |
Table 3. Average camera location error.
X - Easting, Y - Northing, Z - Altitude.
Digital Elevation Model
Fig. 4. Reconstructed digital elevation model.
Processing Parameters
General | |
Cameras | 40 |
Aligned cameras | 40 |
Coordinate system | WGS 84 / UTM zone 33N (EPSG::32633) |
Rotation angles | Yaw, Pitch, Roll |
Point Cloud | |
Points | 100,303 of 106,807 |
RMS reprojection error | 0.106852 (0.298416 pix) |
Max reprojection error | 0.321651 (8.96303 pix) |
Mean key point size | 2.5811 pix |
Point colors | 3 bands, uint8 |
Key points | No |
Average tie point multiplicity | 3.08361 |
Alignment parameters | |
Accuracy | High |
Generic preselection | Yes |
Reference preselection | Source |
Key point limit | 80,000 |
Tie point limit | 8,000 |
Guided image matching | No |
Adaptive camera model fitting | Yes |
Matching time | 1 minutes 21 seconds |
Matching memory usage | 1.57 GB |
Alignment time | 30 seconds |
Alignment memory usage | 93.10 MB |
Software version | 1.6.4.10928 |
File size | 7.63 MB |
Depth Maps | |
Count | 40 |
Depth maps generation parameters | |
Quality | Ultra High |
Filtering mode | Aggressive |
Processing time | 21 minutes 15 seconds |
File size | 1.19 GB |
Dense Point Cloud | |
Points | 702,181,605 |
Point colors | 3 bands, uint8 |
Depth maps generation parameters | |
Quality | Ultra High |
Filtering mode | Aggressive |
Processing time | 21 minutes 15 seconds |
Dense cloud generation parameters | |
Max neighbors | 20 |
Processing time | 30 minutes 37 seconds |
Memory usage | 13.38 GB |
Software version | 1.6.4.10928 |
File size | 10.03 GB |
Model | |
Faces | 300,000 |
Vertices | 152,726 |
Vertex colors | 3 bands, uint8 |
Texture | 4,096 x 4,096 x 10, 4 bands, uint8 |
Texturing parameters | |
Mapping mode | Generic |
Blending mode | Mosaic |
Texture size | 4,096 |
Enable hole filling | Yes |
Enable ghosting filter | Yes |
UV mapping time | 3 minutes 43 seconds |
UV mapping memory usage | 3.31 GB |
Blending time | 2 minutes 47 seconds |
Blending memory usage | 5.92 GB |
File size | 225.29 MB |
Tiled Model | |
Texture | 3 bands, uint8 |
Depth maps generation parameters | |
Quality | Ultra High |
Filtering mode | Aggressive |
Processing time | 21 minutes 15 seconds |
Reconstruction parameters | |
Source data | Dense cloud |
Tile size | 256 |
Face count | Medium |
Enable ghosting filter | No |
Processing time | 8 hours 1 minutes |
Memory usage | 14.54 GB |
Software version | 1.7.2.12040 |
File size | 970.28 MB |
System | |
Software name | Agisoft Metashape Professional |
Software version | 1.7.2 build 12040 |
OS | Windows 64 bit |
RAM | 127.78 GB |
CPU | Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz |
GPU(s) | GeForce RTX 2080 |