Piz Minschun - Tasna Detachment System
Processing Report Reconstruction uncertainty: 15 Projection Accuracy: 3 Reprojection Error: 0.3 Dense Cloud Confidence: 4-255 Mesh connected component size: 99%
23 December 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) |
| 1220 images |
| Type | Resolution | Focal Length | Pixel Size |
| Frame | 5472 x 3648 | 10.26 mm | 2.41 x 2.41 μm |
| Value | Error | F | Cx | Cy | K1 | K2 | K3 | P1 | P2 | |
| F | 4321.14 | 0.02 | 1.00 | 0.01 | -0.34 | -0.33 | 0.33 | -0.30 | 0.01 | -0.22 |
| Cx | -21.9202 | 0.042 | 1.00 | -0.03 | -0.01 | 0.01 | -0.01 | 0.96 | -0.06 | |
| Cy | -29.1185 | 0.034 | 1.00 | -0.04 | 0.01 | -0.01 | -0.04 | 0.77 | ||
| K1 | 0.00397051 | 2.9e-05 | 1.00 | -0.96 | 0.89 | -0.01 | -0.07 | |||
| K2 | 0.017492 | 0.00012 | 1.00 | -0.98 | 0.01 | 0.03 | ||||
| K3 | -0.0182483 | 0.00015 | 1.00 | -0.01 | -0.02 | |||||
| P1 | 9.3883e-05 | 3.5e-06 | 1.00 | -0.08 | ||||||
| P2 | -0.00264964 | 2.1e-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 (cm) | Y error (cm) | Z error (cm) | XY error (cm) | Total error (cm) |
| 12.6774 | 12.0197 | 4.84858 | 17.4696 | 18.13 |
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 | 1220 |
| Aligned cameras | 1220 |
| Coordinate system | CH1903+ / LV95 (EPSG::2056) |
| Rotation angles | Yaw, Pitch, Roll |
| Point Cloud | |
| Points | 519,242 of 7,226,325 |
| RMS reprojection error | 0.226013 (0.339915 pix) |
| Max reprojection error | 8.22048 (12.9951 pix) |
| Mean key point size | 1.46743 pix |
| Point colors | 3 bands, uint8 |
| Key points | No |
| Average tie point multiplicity | 4.77882 |
| Alignment parameters | |
| Accuracy | Highest |
| Generic preselection | Yes |
| Reference preselection | Source |
| Key point limit | 60,000 |
| Key point limit per Mpx | 1,000 |
| Tie point limit | 0 |
| Filter points by mask | Yes |
| Mask tie points | No |
| Exclude stationary tie points | Yes |
| Guided image matching | No |
| Adaptive camera model fitting | No |
| Matching time | 1 hours 27 minutes |
| Matching memory usage | 2.60 GB |
| Alignment time | 1 hours 10 minutes |
| Alignment memory usage | 3.34 GB |
| Optimization parameters | |
| Parameters | f, cx, cy, k1-k3, p1, p2 |
| Adaptive camera model fitting | No |
| Optimization time | 35 seconds |
| Date created | 2022:09:28 12:35:51 |
| Software version | 1.8.4.14856 |
| File size | 559.66 MB |
| Depth Maps | |
| Count | 1218 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Max neighbors | 16 |
| Processing time | 2 hours 50 minutes |
| Memory usage | 5.61 GB |
| Date created | 2022:09:28 16:28:17 |
| Software version | 1.8.4.14856 |
| File size | 9.00 GB |
| Model | |
| Faces | 17,122,113 |
| Vertices | 8,571,291 |
| Vertex colors | 3 bands, uint8 |
| Texture | 4,096 x 4,096 x 40, 4 bands, uint8 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Max neighbors | 16 |
| Processing time | 2 hours 50 minutes |
| Memory usage | 5.61 GB |
| Reconstruction parameters | |
| Surface type | Arbitrary |
| Source data | Dense cloud |
| Interpolation | Disabled |
| Strict volumetric masks | No |
| Processing time | 1 hours 8 minutes |
| Memory usage | 10.78 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 52 seconds |
| UV mapping memory usage | 4.54 GB |
| Blending time | 3 hours 1 minutes |
| Blending memory usage | 45.10 GB |
| Date created | 2022:09:29 08:57:20 |
| Software version | 1.8.4.14856 |
| File size | 1.39 GB |
| Tiled Model | |
| Texture | 3 bands, uint8 |
| Reconstruction parameters | |
| Source data | Mesh |
| Tile size | 256 |
| Face count | High |
| Enable ghosting filter | No |
| Processing time | 4 hours 55 minutes |
| Memory usage | 7.92 GB |
| Date created | 2022:09:29 14:03:05 |
| Software version | 1.8.4.14856 |
| File size | 1000.25 MB |
| Orthomosaic | |
| Size | 21,667 x 40,339 |
| Coordinate system | CH1903+ / LV95 (EPSG::2056) |
| Colors | 3 bands, uint8 |
| Reconstruction parameters | |
| Blending mode | Mosaic |
| Surface | Mesh |
| Enable hole filling | Yes |
| Enable ghosting filter | Yes |
| Processing time | 3 hours 45 minutes |
| Memory usage | 86.76 GB |
| Date created | 2022:11:18 16:09:24 |
| Software version | 1.8.4.14856 |
| File size | 29.43 GB |
| System | |
| Software name | Agisoft Metashape Professional |
| Software version | 1.8.4 build 14856 |
| OS | Windows 64 bit |
| RAM | 127.71 GB |
| CPU | Intel(R) Xeon(R) Gold 5122 CPU @ 3.60GHz |
| GPU(s) | Quadro P5000 |