Midterhuken
Processing Report
07 February 2022
Survey Data
Fig. 1. Camera locations and image overlap.
| Camera Model | Resolution | Focal Length | Pixel Size | Precalibrated |
| L1D-20c (10.26mm) | 5472 x 3648 | 10.26 mm | 2.41 x 2.41 μm | No |
Table 1. Cameras.
Camera Calibration
Fig. 2. Image residuals for L1D-20c (10.26mm).
L1D-20c (10.26mm)
2000 images
| Value | Error | F | Cx | Cy | K1 | K2 | K3 | P1 | P2 | |
| F | 4375.73 | 0.03 | 1.00 | 0.05 | -0.57 | 0.04 | 0.10 | -0.10 | 0.03 | -0.28 |
| Cx | 4.33172 | 0.052 | 1.00 | -0.06 | 0.00 | 0.01 | -0.01 | 0.95 | -0.05 | |
| Cy | -43.5021 | 0.05 | 1.00 | -0.12 | 0.03 | -0.03 | -0.06 | 0.77 | ||
| K1 | 0.00755012 | 1.5e-05 | 1.00 | -0.93 | 0.86 | -0.00 | -0.17 | |||
| K2 | 0.046515 | 6.6e-05 | 1.00 | -0.98 | 0.01 | 0.04 | ||||
| K3 | -0.0489213 | 8.7e-05 | 1.00 | -0.01 | -0.03 | |||||
| P1 | 0.000398469 | 3.7e-06 | 1.00 | -0.05 | ||||||
| P2 | -0.00298746 | 2.6e-06 | 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) |
| 2.8715 | 3.47556 | 2.09734 | 4.50832 | 4.97231 |
Table 3. Average camera location error.
X - Longitude, Y - Latitude, Z - Altitude.
Digital Elevation Model
Fig. 4. Reconstructed digital elevation model.
Processing Parameters
| General | |
| Cameras | 2000 |
| Aligned cameras | 1997 |
| Coordinate system | WGS 84 (EPSG::4326) |
| Rotation angles | Yaw, Pitch, Roll |
| Point Cloud | |
| Points | 1,429,825 of 9,529,648 |
| RMS reprojection error | 0.145703 (0.213796 pix) |
| Max reprojection error | 0.758239 (2.24078 pix) |
| Mean key point size | 1.40594 pix |
| Point colors | 3 bands, uint8 |
| Key points | No |
| Average tie point multiplicity | 4.7211 |
| Alignment parameters | |
| Accuracy | Highest |
| Generic preselection | Yes |
| Reference preselection | No |
| Key point limit | 60,000 |
| Tie point limit | 0 |
| Exclude stationary tie points | Yes |
| Guided image matching | No |
| Adaptive camera model fitting | No |
| Matching time | 2 hours 45 minutes |
| Matching memory usage | 3.33 GB |
| Alignment time | 5 hours 22 minutes |
| Alignment memory usage | 6.27 GB |
| Optimization parameters | |
| Parameters | f, cx, cy, k1-k3, p1, p2 |
| Adaptive camera model fitting | No |
| Optimization time | 37 seconds |
| Software version | 1.7.2.12040 |
| File size | 746.75 MB |
| Depth Maps | |
| Count | 1994 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 2 hours 8 minutes |
| Memory usage | 4.29 GB |
| Software version | 1.7.2.12040 |
| File size | 14.27 GB |
| Dense Point Cloud | |
| Points | 204,105,748 |
| Point colors | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 2 hours 8 minutes |
| Memory usage | 4.29 GB |
| Dense cloud generation parameters | |
| Processing time | 17 hours 31 minutes |
| Memory usage | 33.61 GB |
| Software version | 1.7.2.12040 |
| File size | 6.84 GB |
| Model | |
| Faces | 40,378,523 |
| Vertices | 20,205,964 |
| Vertex colors | 3 bands, uint8 |
| Texture | 4,096 x 4,096 x 15, 4 bands, uint8 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 2 hours 8 minutes |
| Memory usage | 4.29 GB |
| Reconstruction parameters | |
| Surface type | Arbitrary |
| Source data | Dense cloud |
| Interpolation | Enabled |
| Strict volumetric masks | No |
| Processing time | 1 hours 32 minutes |
| Memory usage | 102.86 GB |
| Texturing parameters | |
| Mapping mode | Generic |
| Blending mode | Mosaic |
| Texture size | 4,096 |
| Enable hole filling | Yes |
| Enable ghosting filter | Yes |
| UV mapping time | 4 minutes 53 seconds |
| UV mapping memory usage | 7.33 GB |
| Blending time | 3 hours 19 minutes |
| Blending memory usage | 32.49 GB |
| Software version | 1.7.2.12040 |
| File size | 2.05 GB |
| Tiled Model | |
| Texture | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 2 hours 8 minutes |
| Memory usage | 4.29 GB |
| Reconstruction parameters | |
| Source data | Dense cloud |
| Tile size | 256 |
| Face count | High |
| Enable ghosting filter | No |
| Processing time | 9 hours 46 minutes |
| Memory usage | 9.84 GB |
| Software version | 1.7.2.12040 |
| File size | 2.94 GB |
| System | |
| Software name | Agisoft Metashape Professional |
| Software version | 1.7.2 build 12040 |
| OS | Windows 64 bit |
| RAM | 127.71 GB |
| CPU | Intel(R) Xeon(R) Gold 5122 CPU @ 3.60GHz |
| GPU(s) | Quadro P5000 |