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Kapp Ringertz Disable images that are >0.6 quality Camera Optimization Reconstruction uncertainty: 12 Camera Optimization Projection accuracy: 2 Camera Optimization Reprojection error: 0.3 Camera Optimization Dense Cloud Confidence: >10 Connected component size 99% 05 November 2025
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Survey Data 1 2 3 4 5 6 7 8 9 > 9 500 m Fig. 1. Camera locations and image overlap. Number of images: 1,074 Flying altitude: 93.8 m Ground resolution: 8.33 cm/pix Coverage area: 1.87 km² Camera stations: 1,033 Tie points: 240,399 Projections: 1,063,487 Reprojection error: 0.216 pix Camera Model Resolution Focal Length Pixel Size Precalibrated L2D-20c (12.29mm) 5280 x 2970 12.29 mm 3.66 x 3.66 μm No Table 1. Cameras. Page 3
Camera Calibration 1 pix Fig. 2. Image residuals for L2D-20c (12.29mm). L2D-20c (12.29mm) 1074 images Type Resolution Focal Length Pixel Size Frame 5280 x 2970 12.29 mm 3.66 x 3.66 μm Value Error F Cx Cy K1 K2 K3 P1 P2 F 3704.63 0.021 1.00 0.07 -0.13 -0.08 0.12 -0.09 0.00 -0.11 Cx -43.0442 0.026 1.00 -0.05 0.05 -0.04 0.06 0.90 -0.04 Cy 7.04822 0.022 1.00 -0.04 -0.00 0.01 0.01 0.80 K1 0.0264859 1.9e-05 1.00 -0.94 0.88 0.06 -0.07 K2 -0.086385 7.9e-05 1.00 -0.98 -0.06 -0.00 K3 0.109473 9.8e-05 1.00 0.08 0.01 P1 -0.000909795 2.4e-06 1.00 0.01 P2 -0.000435914 2.1e-06 1.00 Table 2. Calibration coefficients and correlation matrix. Page 4
Camera Locations 500 m -2.00 m -1.60 m -1.20 m -0.800 m -0.400 m 0 m 0.400 m 0.800 m 1.20 m 1.60 m 2.00 m x 100 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) 33.6297 30.1581 71.6652 45.1715 84.7134 Table 3. Average camera location error. X - Longitude, Y - Latitude, Z - Altitude. Page 5
Digital Elevation Model 50.0 m 820 m 500 m Fig. 4. Reconstructed digital elevation model. Resolution: 33.3 cm/pix Point density: 9.01 points/m² Page 6
Processing Parameters General Images 1074 Aligned images 1033 Coordinate system WGS 84 (EPSG::4326) Rotation angles Yaw, Pitch, Roll Tie Points Points 240,399 of 5,438,678 RMS reprojection error 0.135705 (0.216357 pix) Max reprojection error 0.546776 (3.37032 pix) Mean key point size 1.57622 pix Point colors 3 bands, uint8 Key points No Average tie point multiplicity 5.44154 Alignment parameters Accuracy Highest Generic preselection Yes Reference preselection No 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 43 minutes 51 seconds Matching memory usage 2.98 GB Alignment time 55 minutes 49 seconds Alignment memory usage 5.09 GB Optimization parameters Parameters f, cx, cy, k1-k3, p1, p2 Adaptive camera model fitting No Exclude corners No Optimization time 15 seconds Date created 2025:10:29 01:04:16 Software version 2.2.1.20641 File size 472.78 MB Depth Maps Count 1029 Depth maps generation parameters Quality Medium Filtering mode Mild Max neighbors 16 Processing time 14 minutes 1 seconds Memory usage 2.89 GB Date created 2025:10:30 15:56:44 Software version 2.2.1.20641 File size 1.50 GB Point Cloud Points 22,976,284 Coordinate precision 8.33 cm Point attributes Page 7
Color 3 bands, uint8 Normal Confidence 11 - 255 Point classes Created (never classified) 22,976,284 Depth maps generation parameters Quality Medium Filtering mode Mild Max neighbors 16 Processing time 14 minutes 1 seconds Memory usage 2.89 GB Point cloud generation parameters Source data Depth maps Processing time 1 hours 38 minutes Memory usage 11.18 GB Date created 2025:10:30 17:34:46 Software version 2.2.1.20641 File size 477.81 MB Model Faces 4,185,449 Vertices 2,094,869 Vertex colors 3 bands, uint8 Texture 4,096 x 4,096 x 156, 3 bands, uint8 Depth maps generation parameters Quality Medium Filtering mode Mild Max neighbors 16 Processing time 14 minutes 1 seconds Memory usage 2.89 GB Point cloud generation parameters Source data Depth maps Processing time 1 hours 38 minutes Memory usage 11.18 GB Reconstruction parameters Surface type Arbitrary Source data Point cloud Interpolation Enabled Strict volumetric masks No Processing time 6 minutes 14 seconds Memory usage 8.39 GB Texturing parameters Mapping mode Generic Blending mode Mosaic Texture size 4,096 Pixel size (m) 0.05 Enable hole filling Yes Enable ghosting filter Yes UV mapping time 46 seconds UV mapping memory usage 4.13 GB Blending time 2 hours 56 minutes Blending memory usage 70.06 GB Date created 2025:10:30 17:57:50 Software version 2.2.1.20641 File size 1.16 GB Tiled Model Texture 3 bands, uint8 Page 8
Reconstruction parameters Source data Model Tile size 256 Face count Medium Enable ghosting filter No Processing time 1 hours 8 minutes Memory usage 2.03 GB Date created 2025:11:05 15:43:17 Software version 2.2.1.20641 File size 175.00 MB System Software name Agisoft Metashape Professional Software version 2.2.1 build 20641 OS Windows 64 bit RAM 127.78 GB CPU Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz GPU(s) GeForce RTX 2080 Intel(R) UHD Graphics 630 Page 9
