Sandsteinfjellet

Dense cloud confidence 3-255 Connected component size 99%

23 February 2022

Survey Data

1 2 3 4 5 6 7 8 9 > 9 200 m

Fig. 1. Camera locations and image overlap.

Number of images: 161 Flying altitude: 171 m Ground resolution: 3.94 cm/pix Coverage area: 0.172 km² Camera stations: 161 Tie points: 53,112 Projections: 453,530 Reprojection error: 1.18 pix
Camera Model Resolution Focal Length Pixel Size Precalibrated
Test_Pro (10.26mm) 5472 x 3648 10.26 mm 2.41 x 2.41 μm No

Table 1. Cameras.

Camera Calibration

1 pix

Fig. 2. Image residuals for Test_Pro (10.26mm).

Test_Pro (10.26mm)

161 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 B1 B2 K1 K2 K3 P1 P2
F 4344.37 0.15 1.00 -0.02 0.19 -0.70 0.11 -0.02 0.07 -0.05 0.02 0.07
Cx 41.6592 0.25 1.00 -0.05 0.08 0.29 0.01 0.00 -0.00 0.96 -0.12
Cy -59.4375 0.18 1.00 -0.46 -0.09 0.00 -0.00 0.01 -0.04 0.64
B1 7.50966 0.16 1.00 0.11 -0.04 0.04 -0.05 0.03 -0.10
B2 31.1337 0.14 1.00 -0.02 0.03 -0.03 0.19 -0.01
K1 0.00519537 7.4e-05 1.00 -0.95 0.88 0.01 -0.09
K2 0.0173103 0.00032 1.00 -0.98 0.00 0.05
K3 -0.0245884 0.00042 1.00 0.00 -0.05
P1 0.0015034 1.7e-05 1.00 -0.12
P2 -0.00382349 7.3e-06 1.00

Table 2. Calibration coefficients and correlation matrix.

Camera Locations

200 m -4.5 m -3.6 m -2.7 m -1.8 m -0.9 m 0 m 0.9 m 1.8 m 2.7 m 3.6 m 4.5 m x 10

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)
0.879589 1.43176 1.85067 1.68036 2.49972

Table 3. Average camera location error.

X - Longitude, Y - Latitude, Z - Altitude.

Digital Elevation Model

410 m 670 m 200 m

Fig. 4. Reconstructed digital elevation model.

Resolution: 7.88 cm/pix Point density: 161 points/m²

Processing Parameters

General
Cameras 161
Aligned cameras 161
Coordinate system WGS 84 (EPSG::4326)
Rotation angles Yaw, Pitch, Roll
Point Cloud
Points 53,112 of 75,510
RMS reprojection error 0.568027 (1.17982 pix)
Max reprojection error 2.20036 (48.397 pix)
Mean key point size 2.10069 pix
Point colors 3 bands, uint8
Key points No
Average tie point multiplicity 10.7841
Alignment parameters
Accuracy Highest
Generic preselection Yes
Reference preselection Source
Key point limit 40,000
Tie point limit 4,000
Exclude stationary tie points Yes
Guided image matching No
Adaptive camera model fitting Yes
Matching time 5 minutes 9 seconds
Matching memory usage 601.95 MB
Alignment time 7 minutes 5 seconds
Alignment memory usage 58.35 MB
Optimization parameters
Parameters f, cx, cy, k1-k3, p1, p2
Adaptive camera model fitting Yes
Optimization time 8 seconds
Software version 1.7.3.12473
File size 13.88 MB
Depth Maps
Count 161
Depth maps generation parameters
Quality High
Filtering mode Mild
Max neighbors 100
Processing time 28 minutes 40 seconds
Memory usage 7.13 GB
Software version 1.7.3.12473
File size 1.11 GB
Dense Point Cloud
Points 37,163,291
Point colors 3 bands, uint8
Depth maps generation parameters
Quality High
Filtering mode Mild
Max neighbors 100
Processing time 28 minutes 40 seconds
Memory usage 7.13 GB
Dense cloud generation parameters
Processing time 1 hours 37 minutes
Memory usage 10.81 GB
Software version 1.7.3.12473
File size 753.52 MB
Model
Faces 2,467,531
Vertices 1,239,069
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
Max neighbors 100
Processing time 28 minutes 40 seconds
Memory usage 7.13 GB
Reconstruction parameters
Surface type Arbitrary
Source data Dense cloud
Interpolation Enabled
Strict volumetric masks No
Processing time 13 minutes 22 seconds
Memory usage 20.61 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 57 seconds
UV mapping memory usage 3.37 GB
Blending time 6 minutes 34 seconds
Blending memory usage 5.33 GB
Software version 1.7.2.12040
File size 303.17 MB
Tiled Model
Texture 3 bands, uint8
Depth maps generation parameters
Quality High
Filtering mode Mild
Max neighbors 100
Processing time 28 minutes 40 seconds
Memory usage 7.13 GB
Reconstruction parameters
Source data Dense cloud
Tile size 256
Face count Medium
Enable ghosting filter No
Processing time 1 hours 8 minutes
Memory usage 2.07 GB
Software version 1.7.2.12040
File size 203.78 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) i9-9900K CPU @ 3.60GHz
GPU(s) GeForce RTX 2080