Esperantodalen
Filtered by: Reprojection error: 0.3; Reconstruction error: 10; Projection accuracy: 3; Dense cloud confidence: 3-255; Connected component size: 5%
16 February 2022
Survey Data
Fig. 1. Camera locations and image overlap.
| Camera Model | Resolution | Focal Length | Pixel Size | Precalibrated |
| NIKON D5300 (50mm) | 6000 x 4000 | 50 mm | 4 x 4 μm | No |
Table 1. Cameras.
Camera Calibration
Fig. 2. Image residuals for NIKON D5300 (50mm).
NIKON D5300 (50mm)
36 images
| Value | Error | F | Cx | Cy | K1 | K2 | K3 | P1 | P2 | |
| F | 12690.1 | 0.63 | 1.00 | 0.52 | 0.26 | 0.05 | -0.02 | 0.04 | 0.46 | 0.26 |
| Cx | -39.8755 | 1.4 | 1.00 | 0.11 | 0.07 | -0.06 | 0.07 | 0.91 | 0.12 | |
| Cy | -15.4048 | 1.3 | 1.00 | 0.02 | -0.00 | 0.01 | 0.14 | 0.98 | ||
| K1 | -0.0112569 | 0.00029 | 1.00 | -0.96 | 0.91 | 0.10 | 0.01 | |||
| K2 | 0.286093 | 0.0084 | 1.00 | -0.98 | -0.06 | 0.00 | ||||
| K3 | -1.34568 | 0.074 | 1.00 | 0.06 | 0.01 | |||||
| P1 | -0.00111538 | 2.8e-05 | 1.00 | 0.13 | ||||||
| P2 | -0.000437185 | 3.1e-05 | 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) |
| 19.4281 | 24.3212 | 110.83 | 31.1283 | 115.119 |
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 | 36 |
| Aligned cameras | 36 |
| Coordinate system | WGS 84 (EPSG::4326) |
| Rotation angles | Yaw, Pitch, Roll |
| Point Cloud | |
| Points | 52,639 of 231,734 |
| RMS reprojection error | 0.121168 (0.201268 pix) |
| Max reprojection error | 0.331131 (1.2373 pix) |
| Mean key point size | 1.6535 pix |
| Point colors | 3 bands, uint8 |
| Key points | No |
| Average tie point multiplicity | 3.15995 |
| 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 | 1 minutes 50 seconds |
| Matching memory usage | 416.84 MB |
| Alignment time | 42 seconds |
| Alignment memory usage | 246.31 MB |
| Optimization parameters | |
| Parameters | f, cx, cy, k1-k3, p1, p2 |
| Adaptive camera model fitting | No |
| Optimization time | 1 seconds |
| Software version | 1.7.2.12040 |
| File size | 13.05 MB |
| Depth Maps | |
| Count | 36 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 1 minutes 48 seconds |
| Memory usage | 2.11 GB |
| Software version | 1.7.2.12040 |
| File size | 239.62 MB |
| Dense Point Cloud | |
| Points | 42,588,167 |
| Point colors | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 1 minutes 48 seconds |
| Memory usage | 2.11 GB |
| Dense cloud generation parameters | |
| Processing time | 6 minutes 13 seconds |
| Memory usage | 6.41 GB |
| Software version | 1.7.2.12040 |
| File size | 979.52 MB |
| Model | |
| Faces | 8,346,642 |
| Vertices | 4,185,932 |
| 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 | 1 minutes 48 seconds |
| Memory usage | 2.11 GB |
| Reconstruction parameters | |
| Surface type | Arbitrary |
| Source data | Dense cloud |
| Interpolation | Enabled |
| Strict volumetric masks | No |
| Processing time | 17 minutes 29 seconds |
| Memory usage | 23.16 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 37 seconds |
| UV mapping memory usage | 4.14 GB |
| Blending time | 1 minutes 13 seconds |
| Blending memory usage | 6.83 GB |
| Software version | 1.7.2.12040 |
| File size | 568.47 MB |
| Tiled Model | |
| Texture | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 1 minutes 48 seconds |
| Memory usage | 2.11 GB |
| Reconstruction parameters | |
| Source data | Dense cloud |
| Tile size | 256 |
| Face count | High |
| Enable ghosting filter | No |
| Processing time | 49 minutes 15 seconds |
| Memory usage | 4.17 GB |
| Software version | 1.7.2.12040 |
| File size | 866.12 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) i9-10900 CPU @ 2.80GHz |
| GPU(s) | GeForce RTX 2080 SUPER |