Griegaksla
Reconstruction uncertainty 15 Projection accuracy 3 Reprojection error 0.4 Dense Cloud Confidence 5-255 Filter component size 99%
31 March 2022
Survey Data
Fig. 1. Camera locations and image overlap.
| Camera Model | Resolution | Focal Length | Pixel Size | Precalibrated |
| Test_Pro (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 Test_Pro (10.26mm).
Test_Pro (10.26mm)
360 images
| Value | Error | F | Cx | Cy | B1 | B2 | K1 | K2 | K3 | P1 | P2 | |
| F | 4351.26 | 0.055 | 1.00 | 0.04 | 0.07 | -0.59 | 0.14 | -0.15 | 0.17 | -0.14 | 0.07 | -0.10 |
| Cx | -3.74162 | 0.093 | 1.00 | 0.04 | -0.08 | 0.02 | -0.01 | 0.00 | -0.00 | 0.94 | 0.01 | |
| Cy | -72.4411 | 0.11 | 1.00 | -0.67 | 0.15 | -0.09 | 0.07 | -0.06 | -0.00 | 0.70 | ||
| B1 | 3.23023 | 0.069 | 1.00 | -0.18 | 0.10 | -0.06 | 0.05 | -0.07 | -0.25 | |||
| B2 | -2.64366 | 0.04 | 1.00 | -0.05 | 0.02 | -0.02 | -0.10 | 0.08 | ||||
| K1 | 0.00586701 | 3e-05 | 1.00 | -0.94 | 0.88 | -0.02 | -0.19 | |||||
| K2 | 0.0379853 | 0.00012 | 1.00 | -0.98 | 0.01 | 0.08 | ||||||
| K3 | -0.0408663 | 0.00015 | 1.00 | -0.00 | -0.07 | |||||||
| P1 | -0.000459685 | 6.7e-06 | 1.00 | 0.00 | ||||||||
| P2 | -0.0038168 | 4.3e-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) |
| 0.93762 | 1.36984 | 4.20446 | 1.66 | 4.5203 |
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 | 360 |
| Aligned cameras | 360 |
| Coordinate system | WGS 84 (EPSG::4326) |
| Rotation angles | Yaw, Pitch, Roll |
| Point Cloud | |
| Points | 13,147 of 112,822 |
| RMS reprojection error | 0.175732 (0.332861 pix) |
| Max reprojection error | 0.39998 (1.81186 pix) |
| Mean key point size | 1.91012 pix |
| Point colors | 3 bands, uint8 |
| Key points | No |
| Average tie point multiplicity | 15.2335 |
| Alignment parameters | |
| Accuracy | Highest |
| Generic preselection | Yes |
| Reference preselection | Source |
| Key point limit | 40,000 |
| Tie point limit | 4,000 |
| Exclude stationary tie points | Yes |
| Guided image matching | No |
| Adaptive camera model fitting | Yes |
| Matching time | 5 minutes 2 seconds |
| Matching memory usage | 559.75 MB |
| Alignment time | 4 minutes 30 seconds |
| Alignment memory usage | 364.62 MB |
| Optimization parameters | |
| Parameters | f, b1, b2, cx, cy, k1-k3, p1, p2 |
| Adaptive camera model fitting | No |
| Optimization time | 9 seconds |
| Software version | 1.7.3.12473 |
| File size | 28.40 MB |
| Depth Maps | |
| Count | 360 |
| Depth maps generation parameters | |
| Quality | Medium |
| Filtering mode | Mild |
| Processing time | 19 minutes 51 seconds |
| Memory usage | 1.31 GB |
| Software version | 1.7.2.12040 |
| File size | 605.37 MB |
| Dense Point Cloud | |
| Points | 8,544,435 |
| Point colors | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | Medium |
| Filtering mode | Mild |
| Processing time | 19 minutes 51 seconds |
| Memory usage | 1.31 GB |
| Dense cloud generation parameters | |
| Processing time | 37 minutes 40 seconds |
| Memory usage | 6.95 GB |
| Software version | 1.7.2.12040 |
| File size | 163.22 MB |
| Model | |
| Faces | 548,592 |
| Vertices | 277,293 |
| 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 | 19 minutes 51 seconds |
| Memory usage | 1.31 GB |
| Reconstruction parameters | |
| Surface type | Arbitrary |
| Source data | Dense cloud |
| Interpolation | Enabled |
| Strict volumetric masks | No |
| Processing time | 3 minutes 17 seconds |
| Memory usage | 4.20 GB |
| Texturing parameters | |
| Mapping mode | Generic |
| Blending mode | Mosaic |
| Texture size | 4,096 |
| Enable hole filling | Yes |
| Enable ghosting filter | Yes |
| UV mapping time | 2 minutes 4 seconds |
| UV mapping memory usage | 3.63 GB |
| Blending time | 22 minutes 27 seconds |
| Blending memory usage | 5.41 GB |
| Software version | 1.7.2.12040 |
| File size | 214.40 MB |
| Tiled Model | |
| Texture | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | Medium |
| Filtering mode | Mild |
| Processing time | 19 minutes 51 seconds |
| Memory usage | 1.31 GB |
| Reconstruction parameters | |
| Source data | Dense cloud |
| Tile size | 256 |
| Face count | Medium |
| Enable ghosting filter | No |
| Processing time | 2 hours 5 minutes |
| Memory usage | 2.45 GB |
| Software version | 1.7.2.12040 |
| File size | 188.01 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 |