Firkanten
Processing Report
31 January 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)
2258 images
| Value | Error | F | Cx | Cy | B1 | B2 | K1 | K2 | K3 | K4 | P1 | P2 | |
| F | 4349.98 | 0.052 | 1.00 | 0.04 | 0.03 | -0.59 | -0.10 | -0.11 | 0.13 | -0.12 | 0.11 | 0.00 | 0.06 |
| Cx | 0.720578 | 0.064 | 1.00 | -0.03 | -0.02 | 0.40 | 0.01 | -0.00 | 0.00 | -0.00 | 0.91 | 0.04 | |
| Cy | -44.215 | 0.076 | 1.00 | -0.62 | -0.08 | -0.01 | -0.01 | 0.01 | -0.02 | 0.02 | 0.58 | ||
| B1 | -3.14639 | 0.051 | 1.00 | 0.05 | -0.01 | 0.01 | -0.01 | 0.01 | -0.00 | -0.20 | |||
| B2 | -20.5178 | 0.04 | 1.00 | 0.00 | -0.00 | 0.00 | -0.00 | 0.23 | -0.01 | ||||
| K1 | 0.00430827 | 4.7e-05 | 1.00 | -0.97 | 0.92 | -0.87 | 0.01 | -0.03 | |||||
| K2 | 0.0120942 | 0.00033 | 1.00 | -0.99 | 0.96 | -0.01 | -0.01 | ||||||
| K3 | 0.0251514 | 0.00093 | 1.00 | -0.99 | 0.01 | 0.02 | |||||||
| K4 | -0.0717209 | 0.00088 | 1.00 | -0.00 | -0.02 | ||||||||
| P1 | 0.00117641 | 4e-06 | 1.00 | 0.04 | |||||||||
| P2 | -0.00293021 | 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) |
| 14.0585 | 23.9274 | 4.49301 | 27.7517 | 28.1131 |
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 | 2258 |
| Aligned cameras | 2258 |
| Coordinate system | WGS 84 (EPSG::4326) |
| Rotation angles | Yaw, Pitch, Roll |
| Point Cloud | |
| Points | 518,053 of 895,815 |
| RMS reprojection error | 0.770747 (1.31444 pix) |
| Max reprojection error | 2.49032 (81.2179 pix) |
| Mean key point size | 1.50704 pix |
| Point colors | 3 bands, uint8 |
| Key points | No |
| Average tie point multiplicity | 14.8104 |
| Alignment parameters | |
| Accuracy | Highest |
| Generic preselection | No |
| Reference preselection | No |
| Key point limit | 40,000 |
| Tie point limit | 4,000 |
| Exclude stationary tie points | No |
| Guided image matching | No |
| Adaptive camera model fitting | Yes |
| Matching time | 2 days 11 hours |
| Matching memory usage | 7.83 GB |
| Alignment time | 1 hours 14 minutes |
| Alignment memory usage | 2.67 GB |
| Software version | 1.7.2.12040 |
| File size | 217.16 MB |
| Depth Maps | |
| Count | 2258 |
| Depth maps generation parameters | |
| Quality | Medium |
| Filtering mode | Mild |
| Processing time | 1 hours 59 minutes |
| Memory usage | 2.34 GB |
| Software version | 1.7.2.12040 |
| File size | 3.74 GB |
| Dense Point Cloud | |
| Points | 83,409,216 |
| Point colors | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | Medium |
| Filtering mode | Mild |
| Processing time | 1 hours 59 minutes |
| Memory usage | 2.34 GB |
| Dense cloud generation parameters | |
| Processing time | 5 hours 7 minutes |
| Memory usage | 11.55 GB |
| Software version | 1.7.2.12040 |
| File size | 1.78 GB |
| Model | |
| Faces | 5,558,556 |
| Vertices | 2,789,778 |
| Vertex colors | 3 bands, uint8 |
| Texture | 4,096 x 4,096 x 10, 4 bands, uint8 |
| Depth maps generation parameters | |
| Quality | Medium |
| Filtering mode | Mild |
| Processing time | 1 hours 59 minutes |
| Memory usage | 2.34 GB |
| Reconstruction parameters | |
| Surface type | Arbitrary |
| Source data | Dense cloud |
| Interpolation | Enabled |
| Strict volumetric masks | No |
| Processing time | 25 minutes 8 seconds |
| Memory usage | 35.08 GB |
| 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 36 seconds |
| UV mapping memory usage | 3.68 GB |
| Blending time | 2 hours 59 minutes |
| Blending memory usage | 6.91 GB |
| Software version | 1.7.2.12040 |
| File size | 496.23 MB |
| Tiled Model | |
| Texture | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | Medium |
| Filtering mode | Mild |
| Processing time | 1 hours 59 minutes |
| Memory usage | 2.34 GB |
| Reconstruction parameters | |
| Source data | Dense cloud |
| Tile size | 256 |
| Face count | Medium |
| Enable ghosting filter | No |
| Processing time | 7 hours 29 minutes |
| Memory usage | 4.91 GB |
| Software version | 1.7.2.12040 |
| File size | 1.86 GB |
| 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 |