Esperantodalen
Filtered by: Reprojection error: 0.3; Reconstruction error: 15; Projection accuracy: 3; Dense cloud confidence: 3-255; Connected component size: 99%
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)
138 images
| Value | Error | F | Cx | Cy | K1 | K2 | K3 | P1 | P2 | |
| F | 12685.1 | 0.15 | 1.00 | 0.24 | 0.37 | -0.03 | 0.08 | -0.07 | 0.19 | 0.37 |
| Cx | -62.1855 | 0.28 | 1.00 | -0.10 | 0.10 | -0.06 | 0.06 | 0.96 | -0.13 | |
| Cy | -21.1684 | 0.3 | 1.00 | 0.00 | 0.01 | -0.00 | -0.12 | 0.95 | ||
| K1 | -0.00517416 | 0.00011 | 1.00 | -0.97 | 0.91 | 0.10 | -0.00 | |||
| K2 | 0.0818326 | 0.0034 | 1.00 | -0.98 | -0.07 | 0.01 | ||||
| K3 | 0.0850591 | 0.03 | 1.00 | 0.07 | -0.01 | |||||
| P1 | -0.00150611 | 6.5e-06 | 1.00 | -0.15 | ||||||
| P2 | -0.000501329 | 7.4e-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) |
| 26.834 | 16.6892 | 26.2266 | 31.6006 | 41.0662 |
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 | 138 |
| Aligned cameras | 131 |
| Coordinate system | WGS 84 (EPSG::4326) |
| Rotation angles | Yaw, Pitch, Roll |
| Point Cloud | |
| Points | 121,063 of 772,788 |
| RMS reprojection error | 0.119872 (0.24415 pix) |
| Max reprojection error | 0.3476 (1.59403 pix) |
| Mean key point size | 2.02392 pix |
| Point colors | 3 bands, uint8 |
| Key points | No |
| Average tie point multiplicity | 4.96493 |
| 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 | 24 minutes 2 seconds |
| Matching memory usage | 2.93 GB |
| Alignment time | 6 minutes 55 seconds |
| Alignment memory usage | 409.27 MB |
| Optimization parameters | |
| Parameters | f, cx, cy, k1-k3, p1, p2 |
| Adaptive camera model fitting | No |
| Optimization time | 3 seconds |
| Software version | 1.7.2.12040 |
| File size | 63.55 MB |
| Depth Maps | |
| Count | 128 |
| Depth maps generation parameters | |
| Quality | Medium |
| Filtering mode | Mild |
| Processing time | 7 minutes 53 seconds |
| Memory usage | 1.70 GB |
| Software version | 1.7.2.12040 |
| File size | 228.24 MB |
| Dense Point Cloud | |
| Points | 16,557,366 |
| Point colors | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | Medium |
| Filtering mode | Mild |
| Processing time | 7 minutes 53 seconds |
| Memory usage | 1.70 GB |
| Dense cloud generation parameters | |
| Processing time | 6 minutes 30 seconds |
| Memory usage | 5.27 GB |
| Software version | 1.7.2.12040 |
| File size | 312.25 MB |
| Model | |
| Faces | 3,301,495 |
| Vertices | 1,655,646 |
| 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 | 7 minutes 53 seconds |
| Memory usage | 1.70 GB |
| Reconstruction parameters | |
| Surface type | Arbitrary |
| Source data | Dense cloud |
| Interpolation | Enabled |
| Strict volumetric masks | No |
| Processing time | 5 minutes 43 seconds |
| Memory usage | 8.57 GB |
| Texturing parameters | |
| Mapping mode | Generic |
| Blending mode | Mosaic |
| Texture size | 4,096 |
| Enable hole filling | Yes |
| Enable ghosting filter | Yes |
| UV mapping time | 4 minutes 5 seconds |
| UV mapping memory usage | 3.98 GB |
| Blending time | 1 minutes 52 seconds |
| Blending memory usage | 6.13 GB |
| Software version | 1.7.2.12040 |
| File size | 320.86 MB |
| Tiled Model | |
| Texture | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | Medium |
| Filtering mode | Mild |
| Processing time | 7 minutes 53 seconds |
| Memory usage | 1.70 GB |
| Reconstruction parameters | |
| Source data | Dense cloud |
| Tile size | 256 |
| Face count | High |
| Enable ghosting filter | No |
| Processing time | 52 minutes 20 seconds |
| Memory usage | 5.04 GB |
| Software version | 1.7.2.12040 |
| File size | 1.03 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) i9-10900 CPU @ 2.80GHz |
| GPU(s) | NVIDIA GeForce RTX 2080 SUPER |