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Processing Report Documenting processing parameters and user settings. 24 May 2024
Survey Data 1 2 3 4 5 6 7 8 9 > 9 1e+03 m Fig. 1. Camera locations and image overlap. Number of images: 276 Flying altitude: 442 m Ground resolution: 0.202 m/pix Coverage area: 1.12e+07 m² Camera stations: 276 Tie points: 8,970 Projections: 64,646 Reprojection error: 0.327 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. Page 2
Camera Calibration 1 pix Fig. 2. Image residuals for L2D-20c (12.29mm). L2D-20c (12.29mm) 276 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 3711.77 0.13 1.00 0.11 -0.83 -0.05 0.13 -0.13 0.10 -0.22 Cx -30.8521 0.18 1.00 -0.06 -0.09 0.11 -0.11 0.97 0.05 Cy 1.45465 0.21 1.00 -0.12 0.02 0.01 -0.05 0.48 K1 0.0150776 8.2e-05 1.00 -0.95 0.89 -0.07 -0.15 K2 -0.0423342 0.00028 1.00 -0.98 0.09 0.01 K3 0.0667509 0.00029 1.00 -0.09 0.01 P1 -1.1688e-05 1.6e-05 1.00 0.05 P2 -0.000435644 1e-05 1.00 Table 2. Calibration coefficients and correlation matrix. Page 3
Camera Locations 1e+03 m -6 m -4.8 m -3.6 m -2.4 m -1.2 m 0 m 1.2 m 2.4 m 3.6 m 4.8 m 6 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 (m) Y error (m) Z error (m) XY error (m) Total error (m) 0.673085 0.60921 1.12185 0.907844 1.44316 Table 3. Average camera location error. X - Longitude, Y - Latitude, Z - Altitude. Page 4
Digital Elevation Model -110 m 720 m 1e+03 m Fig. 4. Reconstructed digital elevation model. Resolution: 0.405 m/pix Point density: 6.1 points/m² Page 5
Processing Parameters General Cameras 276 Aligned cameras 276 Coordinate system WGS 84 (EPSG::4326) Rotation angles Yaw, Pitch, Roll Tie Points Points 8,970 of 252,276 RMS reprojection error 0.143972 (0.327314 pix) Max reprojection error 0.477257 (1.61033 pix) Mean key point size 2.24154 pix Point colors 3 bands, uint8 Key points No Average tie point multiplicity 11.7104 Alignment parameters Accuracy High Generic preselection No Reference preselection Source Key point limit 60,000 Key point limit per Mpx 1,000 Tie point limit 10,000 Exclude stationary tie points No Guided image matching No Adaptive camera model fitting No Matching time 44 minutes 48 seconds Matching memory usage 984.05 MB Alignment time 3 minutes 54 seconds Alignment memory usage 1.35 GB Optimization parameters Parameters f, cx, cy, k1-k3, p1, p2 Adaptive camera model fitting No Optimization time 1 seconds Date created 2024:05:23 11:45:41 Software version 2.1.0.17532 File size 46.04 MB Depth Maps Count 264 Depth maps generation parameters Quality High Filtering mode Mild Max neighbors 16 Processing time 19 minutes 50 seconds Memory usage 3.67 GB Date created 2024:05:23 12:40:40 Software version 2.1.0.17532 File size 1.93 GB Point Cloud Points 93,324,946 Point attributes Color 3 bands, uint8 Normal Page 6
Confidence 1 - 116 Point classes Created (never classified) 48,097,384 Low Point (noise) 45,227,562 Depth maps generation parameters Quality High Filtering mode Mild Max neighbors 16 Processing time 19 minutes 50 seconds Memory usage 3.67 GB Point cloud generation parameters Processing time 2 hours 23 minutes Memory usage 15.46 GB Date created 2024:05:23 13:22:06 Software version 2.1.0.17532 File size 1.34 GB Model Faces 12,324,516 Vertices 6,161,902 Vertex colors 3 bands, uint8 Texture 4,096 x 4,096 x 20, 4 bands, uint8 Depth maps generation parameters Quality High Filtering mode Mild Max neighbors 16 Processing time 19 minutes 50 seconds Memory usage 3.67 GB Point cloud generation parameters Processing time 2 hours 23 minutes Memory usage 15.46 GB Reconstruction parameters Surface type Arbitrary Source data Point cloud Interpolation Disabled Strict volumetric masks No Processing time 35 minutes 37 seconds Memory usage 9.91 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 9 seconds UV mapping memory usage 3.94 GB Blending time 18 minutes 44 seconds Blending memory usage 36.57 GB Date created 2024:05:23 13:57:45 Software version 2.1.0.17532 File size 961.47 MB Tiled Model Texture 3 bands, uint8 Reconstruction parameters Source data Model Tile size 256 Face count High Page 7
Enable ghosting filter No Processing time 59 minutes 31 seconds Memory usage 3.55 GB Date created 2024:05:23 15:07:52 Software version 2.1.0.17532 File size 614.01 MB Additional Parameters Sparse cloud reconstruction uncertainity 10 Sparse cloud projection accuracy 2.6 Sparse cloud reprojection error 0.3 Point cloud confidence (minimum threshold) 5-255 Mesh connected components 99 System Software name Agisoft Metashape Professional Software version 2.1.0 build 17532 OS Windows 64 bit RAM 127.78 GB CPU Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz GPU(s) GeForce RTX 2080 Page 8
