Processing Report

Documenting processing parameters and user settings.

15 May 2024

Survey Data

1 2 3 4 5 6 7 8 9 > 9 100 m

Fig. 1. Camera locations and image overlap.

Number of images: 114 Flying altitude: 92.6 m Ground resolution: 0.0275 m/pix Coverage area: 9.13e+04 m² Camera stations: 113 Tie points: 71,318 Projections: 175,463 Reprojection error: 0.326 pix
Camera Model Resolution Focal Length Pixel Size Precalibrated
L2D-20c (12.29mm) 5280 x 3956 12.29 mm 3.36 x 3.36 μm No

Table 1. Cameras.

Camera Calibration

1 pix

Fig. 2. Image residuals for L2D-20c (12.29mm).

L2D-20c (12.29mm)
114 images
Type Resolution Focal Length Pixel Size
Frame 5280 x 3956 12.29 mm 3.36 x 3.36 μm
Value Error F Cx Cy K1 K2 K3 P1 P2
F 3713.08 0.15 1.00 0.19 -0.19 -0.03 0.06 -0.03 0.16 0.00
Cx -21.1253 0.28 1.00 -0.02 -0.07 0.12 -0.12 0.96 0.02
Cy -11.5535 0.25 1.00 0.03 -0.04 0.06 -0.01 0.89
K1 0.0202373 8.2e-05 1.00 -0.95 0.90 -0.07 0.01
K2 -0.0617945 0.0003 1.00 -0.98 0.12 -0.04
K3 0.0857327 0.00034 1.00 -0.12 0.07
P1 0.000877708 2.1e-05 1.00 0.01
P2 -0.000343606 1.6e-05 1.00

Table 2. Calibration coefficients and correlation matrix.

Camera Locations

100 m -4 m -3.2 m -2.4 m -1.6 m -0.8 m 0 m 0.8 m 1.6 m 2.4 m 3.2 m 4 m x 15

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)
0.693082 0.91825 1.2403 1.15045 1.69171

Table 3. Average camera location error.

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

Digital Elevation Model

230 m 380 m 100 m

Fig. 4. Reconstructed digital elevation model.

Resolution: 0.0549 m/pix Point density: 331 points/m²

Processing Parameters

General
Cameras 114
Aligned cameras 113
Coordinate system WGS 84 (EPSG::4326)
Rotation angles Yaw, Pitch, Roll
Tie Points
Points 71,318 of 454,859
RMS reprojection error 0.142299 (0.325604 pix)
Max reprojection error 0.523924 (1.93783 pix)
Mean key point size 2.24137 pix
Point colors 3 bands, uint8
Key points No
Average tie point multiplicity 3.37542
Alignment parameters
Accuracy High
Generic preselection Yes
Reference preselection Source
Key point limit 60,000
Key point limit per Mpx 1,000
Tie point limit 0
Exclude stationary tie points Yes
Guided image matching No
Adaptive camera model fitting No
Matching time 1 minutes 4 seconds
Matching memory usage 748.23 MB
Alignment time 22 seconds
Alignment memory usage 1.68 GB
Optimization parameters
Parameters f, cx, cy, k1-k3, p1, p2
Adaptive camera model fitting No
Optimization time 2 seconds
Date created 2024:05:07 12:29:36
Software version 2.1.0.17532
File size 26.38 MB
Depth Maps
Count 111
Depth maps generation parameters
Quality High
Filtering mode Mild
Max neighbors 16
Processing time 0 seconds
Memory usage 2.95 GB
Date created 2024:05:07 14:02:09
Software version 2.1.0.17532
File size 578.34 MB
Point Cloud
Points 56,814,970
Point attributes
Color 3 bands, uint8
Normal
Confidence 1 - 37
Point classes
Created (never classified) 29,130,709
Low Point (noise) 27,684,261
Depth maps generation parameters
Quality High
Filtering mode Mild
Max neighbors 16
Processing time 0 seconds
Memory usage 2.95 GB
Point cloud generation parameters
Processing time 38 seconds
Memory usage 7.18 GB
Date created 2024:05:07 14:10:07
Software version 2.1.0.17532
File size 804.68 MB
Model
Faces 10,705,037
Vertices 5,354,512
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 16
Processing time 0 seconds
Memory usage 2.95 GB
Point cloud generation parameters
Processing time 38 seconds
Memory usage 7.18 GB
Reconstruction parameters
Surface type Arbitrary
Source data Point cloud
Interpolation Disabled
Strict volumetric masks No
Processing time 1 minutes 16 seconds
Memory usage 8.88 GB
Texturing parameters
Mapping mode Generic
Blending mode Mosaic
Texture size 4,096
Enable hole filling Yes
Enable ghosting filter Yes
UV mapping time 1 minutes 24 seconds
UV mapping memory usage 3.78 GB
Blending time 2 minutes 52 seconds
Blending memory usage 7.03 GB
Blending GPU memory usage 4.74 GB
Date created 2024:05:13 11:28:37
Software version 2.1.0.17532
File size 678.44 MB
Tiled Model
Texture 3 bands, uint8
Reconstruction parameters
Source data Model
Tile size 256
Face count Medium
Enable ghosting filter No
Processing time 24 seconds
Memory usage 2.63 GB
Date created 2024:05:13 17:28:54
Software version 2.1.0.17532
File size 205.22 MB
Additional Parameters
Sparse cloud reconstruction uncertainity 10
Sparse cloud projection accuracy 2.8
Sparse cloud reprojection error 0.3
Point cloud confidence (minimum threshold) 4-255
Mesh connected components 99
System
Software name Agisoft Metashape Professional
Software version 2.1.0 build 17532
OS Windows 64 bit
RAM 127.71 GB
CPU Intel(R) Xeon(R) Gold 5122 CPU @ 3.60GHz
GPU(s) Quadro P5000