Kvalhovden
Processing Report
09 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)
222 images
| Value | Error | F | Cx | Cy | K1 | K2 | K3 | P1 | P2 | |
| F | 4329.96 | 0.079 | 1.00 | -0.00 | -0.76 | -0.03 | 0.06 | -0.06 | 0.11 | -0.19 |
| Cx | 73.015 | 0.14 | 1.00 | 0.14 | -0.02 | 0.03 | -0.03 | 0.95 | 0.07 | |
| Cy | -62.3887 | 0.17 | 1.00 | -0.06 | 0.03 | -0.03 | 0.01 | 0.48 | ||
| K1 | 0.00500002 | 2.4e-05 | 1.00 | -0.89 | 0.82 | 0.00 | -0.32 | |||
| K2 | 0.0273309 | 9.5e-05 | 1.00 | -0.98 | 0.02 | 0.07 | ||||
| K3 | -0.024 | 0.00013 | 1.00 | -0.03 | -0.05 | |||||
| P1 | 0.00221328 | 1e-05 | 1.00 | 0.04 | ||||||
| P2 | -0.0030316 | 5.1e-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) |
| 1.75304 | 4.31467 | 1.83394 | 4.6572 | 5.00529 |
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 | 222 |
| Aligned cameras | 220 |
| Coordinate system | WGS 84 (EPSG::4326) |
| Rotation angles | Yaw, Pitch, Roll |
| Point Cloud | |
| Points | 96,919 of 1,251,560 |
| RMS reprojection error | 0.144358 (0.21105 pix) |
| Max reprojection error | 0.47685 (1.55034 pix) |
| Mean key point size | 1.44909 pix |
| Point colors | 3 bands, uint8 |
| Key points | No |
| Average tie point multiplicity | 4.64071 |
| 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 | 14 minutes 31 seconds |
| Matching memory usage | 2.51 GB |
| Alignment time | 13 minutes 5 seconds |
| Alignment memory usage | 495.82 MB |
| Optimization parameters | |
| Parameters | f, cx, cy, k1-k3, p1, p2 |
| Adaptive camera model fitting | No |
| Optimization time | 5 seconds |
| Software version | 1.7.2.12040 |
| File size | 94.45 MB |
| Depth Maps | |
| Count | 220 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 23 minutes 58 seconds |
| Memory usage | 3.62 GB |
| Software version | 1.7.2.12040 |
| File size | 1.25 GB |
| Dense Point Cloud | |
| Points | 34,655,025 |
| Point colors | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 23 minutes 58 seconds |
| Memory usage | 3.62 GB |
| Dense cloud generation parameters | |
| Processing time | 1 hours 9 minutes |
| Memory usage | 11.22 GB |
| Software version | 1.7.2.12040 |
| File size | 569.20 MB |
| Model | |
| Faces | 6,920,906 |
| Vertices | 3,466,220 |
| Vertex colors | 3 bands, uint8 |
| Texture | 4,096 x 4,096 x 10, 4 bands, uint8 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 23 minutes 58 seconds |
| Memory usage | 3.62 GB |
| Reconstruction parameters | |
| Surface type | Arbitrary |
| Source data | Dense cloud |
| Interpolation | Enabled |
| Strict volumetric masks | No |
| Processing time | 12 minutes 57 seconds |
| Memory usage | 16.60 GB |
| Texturing parameters | |
| Mapping mode | Generic |
| Blending mode | Mosaic |
| Texture size | 4,096 |
| Enable hole filling | Yes |
| Enable ghosting filter | Yes |
| UV mapping time | 5 minutes 33 seconds |
| UV mapping memory usage | 4.19 GB |
| Blending time | 3 minutes 24 seconds |
| Blending memory usage | 6.44 GB |
| Software version | 1.7.2.12040 |
| File size | 499.98 MB |
| Tiled Model | |
| Texture | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 23 minutes 58 seconds |
| Memory usage | 3.62 GB |
| Reconstruction parameters | |
| Source data | Dense cloud |
| Tile size | 256 |
| Face count | High |
| Enable ghosting filter | No |
| Processing time | 53 minutes 47 seconds |
| Memory usage | 4.17 GB |
| Software version | 1.7.2.12040 |
| File size | 516.11 MB |
| 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 |