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Processing Report
10 May 2022
Survey Data
Fig. 1. Camera locations and image overlap.
| Camera Model | Resolution | Focal Length | Pixel Size | Precalibrated |
| iPhone SE, iPhone SE back camera 4.15mm f/2.2 (4.15mm) | 4032 x 3024 | 4.15 mm | 1.23 x 1.23 Îĵm | No |
Table 1. Cameras.
Camera Calibration
Fig. 2. Image residuals for iPhone SE, iPhone SE back camera 4.15mm f/2.2 (4.15mm).
iPhone SE, iPhone SE back camera 4.15mm f/2.2 (4.15mm)
94 images
| Value | Error | F | Cx | Cy | K1 | K2 | K3 | P1 | P2 | |
| F | 3340.91 | 0.62 | 1.00 | 0.24 | -0.64 | 0.21 | -0.19 | 0.01 | -0.03 | 0.26 |
| Cx | -10.777 | 0.14 | 1.00 | -0.25 | 0.12 | -0.09 | 0.06 | 0.61 | -0.11 | |
| Cy | 13.2558 | 0.27 | 1.00 | -0.30 | 0.15 | -0.02 | -0.09 | 0.42 | ||
| K1 | 0.112139 | 0.00015 | 1.00 | -0.91 | 0.82 | 0.06 | -0.19 | |||
| K2 | -0.183705 | 0.00068 | 1.00 | -0.96 | -0.01 | -0.07 | ||||
| K3 | 0.0106293 | 0.00094 | 1.00 | 0.02 | 0.04 | |||||
| P1 | -0.000860392 | 1.2e-05 | 1.00 | -0.25 | ||||||
| P2 | 0.0018224 | 2.8e-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) |
| 0.593764 | 0.989597 | 1.60558 | 1.15406 | 1.97731 |
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 | 94 |
| Aligned cameras | 94 |
| Coordinate system | WGS 84 (EPSG::4326) |
| Rotation angles | Yaw, Pitch, Roll |
| Point Cloud | |
| Points | 69,521 of 542,102 |
| RMS reprojection error | 0.147688 (0.297499 pix) |
| Max reprojection error | 0.604659 (1.57754 pix) |
| Mean key point size | 1.94744 pix |
| Point colors | 3 bands, uint8 |
| Key points | No |
| Average tie point multiplicity | 2.70467 |
| 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 | 11 seconds |
| Matching memory usage | 1.64 GB |
| Alignment time | 30 seconds |
| Alignment memory usage | 159.94 MB |
| Optimization parameters | |
| Parameters | f, cx, cy, k1-k3, p1, p2 |
| Adaptive camera model fitting | No |
| Optimization time | 2 seconds |
| Software version | 1.7.2.12040 |
| File size | 25.53 MB |
| Depth Maps | |
| Count | 92 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 2 minutes 13 seconds |
| Memory usage | 1.38 GB |
| Software version | 1.7.2.12040 |
| File size | 425.97 MB |
| Dense Point Cloud | |
| Points | 32,294,945 |
| Point colors | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 2 minutes 13 seconds |
| Memory usage | 1.38 GB |
| Dense cloud generation parameters | |
| Processing time | 10 minutes 29 seconds |
| Memory usage | 3.95 GB |
| Software version | 1.7.2.12040 |
| File size | 782.66 MB |
| Model | |
| Faces | 6,458,988 |
| Vertices | 3,236,967 |
| 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 | 2 minutes 13 seconds |
| Memory usage | 1.38 GB |
| Reconstruction parameters | |
| Surface type | Arbitrary |
| Source data | Dense cloud |
| Interpolation | Enabled |
| Strict volumetric masks | No |
| Processing time | 14 minutes 6 seconds |
| Memory usage | 19.09 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 19 seconds |
| UV mapping memory usage | 3.68 GB |
| Blending time | 1 minutes 14 seconds |
| Blending memory usage | 5.44 GB |
| Software version | 1.7.2.12040 |
| File size | 539.52 MB |
| Tiled Model | |
| Texture | 3 bands, uint8 |
| Depth maps generation parameters | |
| Quality | High |
| Filtering mode | Mild |
| Processing time | 2 minutes 13 seconds |
| Memory usage | 1.38 GB |
| Reconstruction parameters | |
| Source data | Dense cloud |
| Tile size | 256 |
| Face count | High |
| Enable ghosting filter | No |
| Processing time | 40 minutes 4 seconds |
| Memory usage | 3.45 GB |
| Software version | 1.7.2.12040 |
| File size | 644.08 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) Core(TM) i9-10900K CPU @ 3.70GHz |
| GPU(s) | Quadro RTX 5000 |