Kampesteindalen

Processing Report

10 February 2022

Survey Data

1 2 3 4 5 6 7 8 9 > 9 10 m

Fig. 1. Camera locations and image overlap.

Number of images: 183 Flying altitude: 13.4 m Ground resolution: 2.97 mm/pix Coverage area: 1.35e+03 m² Camera stations: 183 Tie points: 51,648 Projections: 148,642 Reprojection error: 0.251 pix
Camera Model Resolution Focal Length Pixel Size Precalibrated
L1D-20c (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 L1D-20c (10.26mm).

L1D-20c (10.26mm)

183 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 K1 K2 K3 P1 P2
F 4351.38 0.14 1.00 0.01 -0.20 0.17 0.07 -0.07 -0.02 -0.18
Cx -16.404 0.29 1.00 0.16 -0.00 0.00 -0.00 0.97 0.19
Cy -40.4875 0.19 1.00 -0.08 0.01 -0.01 0.19 0.88
K1 0.00695363 5.5e-05 1.00 -0.92 0.86 -0.01 -0.08
K2 0.0320001 0.00024 1.00 -0.98 0.00 0.01
K3 -0.0331074 0.00032 1.00 0.00 -0.01
P1 -0.00103887 1.9e-05 1.00 0.22
P2 -0.00326413 1e-05 1.00

Table 2. Calibration coefficients and correlation matrix.

Camera Locations

10 m -80 cm -64 cm -48 cm -32 cm -16 cm 0 cm 16 cm 32 cm 48 cm 64 cm 80 cm x 3

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 (cm) Y error (cm) Z error (cm) XY error (cm) Total error (cm)
41.3067 40.381 34.33 57.7656 67.1968

Table 3. Average camera location error.

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

Digital Elevation Model

59 m 83 m 10 m

Fig. 4. Reconstructed digital elevation model.

Resolution: 5.95 mm/pix Point density: 2.83 points/cm²

Processing Parameters

General
Cameras 183
Aligned cameras 183
Coordinate system WGS 84 (EPSG::4326)
Rotation angles Yaw, Pitch, Roll
Point Cloud
Points 51,648 of 1,069,858
RMS reprojection error 0.142549 (0.250895 pix)
Max reprojection error 0.589044 (1.67899 pix)
Mean key point size 1.67041 pix
Point colors 3 bands, uint8
Key points No
Average tie point multiplicity 5.66028
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 43 minutes 26 seconds
Matching memory usage 631.92 MB
Alignment time 22 minutes 38 seconds
Alignment memory usage 446.96 MB
Optimization parameters
Parameters f, cx, cy, k1-k3, p1, p2
Adaptive camera model fitting No
Optimization time 4 seconds
Software version 1.7.2.12040
File size 96.67 MB
Depth Maps
Count 169
Depth maps generation parameters
Quality High
Filtering mode Mild
Processing time 15 minutes 51 seconds
Memory usage 3.24 GB
Software version 1.7.2.12040
File size 1.30 GB
Dense Point Cloud
Points 55,244,425
Point colors 3 bands, uint8
Depth maps generation parameters
Quality High
Filtering mode Mild
Processing time 15 minutes 51 seconds
Memory usage 3.24 GB
Dense cloud generation parameters
Processing time 1 hours 15 minutes
Memory usage 9.09 GB
Software version 1.7.2.12040
File size 1002.19 MB
Model
Faces 10,867,575
Vertices 5,446,216
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 15 minutes 51 seconds
Memory usage 3.24 GB
Reconstruction parameters
Surface type Arbitrary
Source data Dense cloud
Interpolation Enabled
Strict volumetric masks No
Processing time 24 minutes 23 seconds
Memory usage 32.45 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 17 seconds
UV mapping memory usage 3.76 GB
Blending time 2 minutes 33 seconds
Blending memory usage 7.40 GB
Software version 1.7.2.12040
File size 724.64 MB
Tiled Model
Texture 3 bands, uint8
Depth maps generation parameters
Quality High
Filtering mode Mild
Processing time 15 minutes 51 seconds
Memory usage 3.24 GB
Reconstruction parameters
Source data Dense cloud
Tile size 256
Face count High
Enable ghosting filter No
Processing time 1 hours 20 minutes
Memory usage 4.86 GB
Software version 1.7.2.12040
File size 1.12 GB
System
Software name Agisoft Metashape Professional
Software version 1.7.2 build 12040
OS Windows 64 bit
RAM 127.71 GB
CPU Intel(R) Xeon(R) Gold 5122 CPU @ 3.60GHz
GPU(s) Quadro P5000