Litledalsfjellet
Filter component size 99%
24 February 2022
Survey Data
Fig. 1. Camera locations and image overlap.
Camera Model | Resolution | Focal Length | Pixel Size | Precalibrated |
NIKON D800 (50mm) | 4924 x 7374 | 50 mm | 4.88 x 4.88 μm | No |
Table 1. Cameras.
Camera Calibration
Fig. 2. Image residuals for NIKON D800 (50mm).
NIKON D800 (50mm)
80 images
Value | Error | F | B1 | B2 | K1 | K2 | K3 | P1 | P2 | |
F | 10599.5 | 0.53 | 1.00 | -0.66 | 0.07 | 0.08 | 0.09 | -0.07 | 0.02 | -0.07 |
B1 | -24.7577 | 0.37 | 1.00 | -0.08 | -0.03 | -0.04 | 0.03 | 0.06 | 0.28 | |
B2 | 1.18618 | 0.33 | 1.00 | 0.00 | 0.01 | -0.01 | -0.26 | 0.06 | ||
K1 | -0.108165 | 6.6e-05 | 1.00 | -0.92 | 0.86 | -0.00 | -0.03 | |||
K2 | 0.0659833 | 0.00086 | 1.00 | -0.98 | -0.03 | -0.02 | ||||
K3 | 0.21571 | 0.0034 | 1.00 | 0.02 | 0.01 | |||||
P1 | 0.000123869 | 6.6e-06 | 1.00 | 0.51 | ||||||
P2 | 0.000276087 | 7.6e-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) |
5.96955 | 7.12079 | 16.3195 | 9.29199 | 18.7794 |
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 | 80 |
Aligned cameras | 80 |
Coordinate system | WGS 84 / UTM zone 33N (EPSG::32633) |
Rotation angles | Yaw, Pitch, Roll |
Point Cloud | |
Points | 170,113 of 181,263 |
RMS reprojection error | 0.133004 (0.366555 pix) |
Max reprojection error | 0.402993 (11.5315 pix) |
Mean key point size | 2.50269 pix |
Point colors | 3 bands, uint8 |
Key points | No |
Average tie point multiplicity | 3.72131 |
Alignment parameters | |
Accuracy | High |
Generic preselection | Yes |
Reference preselection | Source |
Key point limit | 80,000 |
Tie point limit | 8,000 |
Guided image matching | No |
Adaptive camera model fitting | Yes |
Matching time | 1 minutes 22 seconds |
Matching memory usage | 1.73 GB |
Alignment time | 47 seconds |
Alignment memory usage | 104.85 MB |
Software version | 1.6.4.10928 |
File size | 14.72 MB |
Depth Maps | |
Count | 80 |
Depth maps generation parameters | |
Quality | High |
Filtering mode | Aggressive |
Processing time | 7 minutes 18 seconds |
Memory usage | 4.46 GB |
Software version | 1.6.4.10928 |
File size | 583.81 MB |
Dense Point Cloud | |
Points | 232,002,696 |
Point colors | 3 bands, uint8 |
Depth maps generation parameters | |
Quality | High |
Filtering mode | Aggressive |
Processing time | 7 minutes 18 seconds |
Memory usage | 4.46 GB |
Dense cloud generation parameters | |
Processing time | 8 minutes 59 seconds |
Memory usage | 9.84 GB |
Software version | 1.6.4.10928 |
File size | 3.25 GB |
Model | |
Faces | 3,989,482 |
Vertices | 2,001,123 |
Vertex colors | 3 bands, uint8 |
Texture | 4,096 x 4,096 x 15, 4 bands, uint8 |
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 54 seconds |
UV mapping memory usage | 7.66 GB |
Blending time | 1 minutes 59 seconds |
Blending memory usage | 8.80 GB |
File size | 518.37 MB |
Tiled Model | |
Texture | 3 bands, uint8 |
Depth maps generation parameters | |
Quality | High |
Filtering mode | Aggressive |
Processing time | 7 minutes 18 seconds |
Memory usage | 4.46 GB |
Reconstruction parameters | |
Source data | Dense cloud |
Tile size | 256 |
Face count | Medium |
Enable ghosting filter | No |
Processing time | 3 hours 39 minutes |
Memory usage | 5.23 GB |
Software version | 1.7.2.12040 |
File size | 1.27 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) i9-9900K CPU @ 3.60GHz |
GPU(s) | GeForce RTX 2080 |