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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: 271 Flying altitude: 315 m Ground resolution: 0.134 m/pix Coverage area: 8.2e+06 m² Camera stations: 268 Tie points: 23,033 Projections: 113,581 Reprojection error: 0.336 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) 271 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 3709.69 0.1 1.00 0.02 -0.84 -0.06 0.14 -0.14 -0.03 -0.34 Cx -32.6577 0.11 1.00 -0.05 -0.10 0.12 -0.14 0.95 -0.11 Cy 2.00719 0.17 1.00 -0.09 -0.01 0.02 -0.00 0.62 K1 0.0134612 6.7e-05 1.00 -0.96 0.89 -0.09 -0.14 K2 -0.0352127 0.00022 1.00 -0.98 0.11 0.00 K3 0.0587314 0.00023 1.00 -0.12 0.02 P1 -0.000428644 1e-05 1.00 -0.10 P2 -0.000455531 8.2e-06 1.00 Table 2. Calibration coefficients and correlation matrix. Page 3
Camera Locations 1e+03 m -10 m -8 m -6 m -4 m -2 m 0 m 2 m 4 m 6 m 8 m 10 m x 70 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) 0.714076 0.967349 3.08761 1.20236 3.31346 Table 3. Average camera location error. X - Longitude, Y - Latitude, Z - Altitude. Page 4
Digital Elevation Model -40 m 320 m 1e+03 m Fig. 4. Reconstructed digital elevation model. Resolution: 0.268 m/pix Point density: 13.9 points/m² Page 5
Processing Parameters General Cameras 271 Aligned cameras 268 Coordinate system WGS 84 (EPSG::4326) Rotation angles Yaw, Pitch, Roll Tie Points Points 23,033 of 369,601 RMS reprojection error 0.148504 (0.335616 pix) Max reprojection error 0.566833 (1.56919 pix) Mean key point size 2.22826 pix Point colors 3 bands, uint8 Key points No Average tie point multiplicity 7.89452 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 29 minutes 48 seconds Matching memory usage 820.26 MB Alignment time 2 minutes 23 seconds Alignment memory usage 2.12 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 11:49:46 Software version 2.1.0.17532 File size 46.14 MB Depth Maps Count 265 Depth maps generation parameters Quality High Filtering mode Mild Max neighbors 16 Processing time 21 minutes 33 seconds Memory usage 3.87 GB Date created 2024:05:23 12:34:13 Software version 2.1.0.17532 File size 1.98 GB Point Cloud Points 102,207,519 Point attributes Color 3 bands, uint8 Normal Page 6
Confidence 1 - 71 Point classes Created (never classified) 52,535,408 Low Point (noise) 49,672,111 Depth maps generation parameters Quality High Filtering mode Mild Max neighbors 16 Processing time 21 minutes 33 seconds Memory usage 3.87 GB Point cloud generation parameters Processing time 1 hours 46 minutes Memory usage 13.75 GB Date created 2024:05:23 13:10:02 Software version 2.1.0.17532 File size 1.50 GB Model Faces 11,045,594 Vertices 5,522,346 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 21 minutes 33 seconds Memory usage 3.87 GB Point cloud generation parameters Processing time 1 hours 46 minutes Memory usage 13.75 GB Reconstruction parameters Surface type Arbitrary Source data Point cloud Interpolation Disabled Strict volumetric masks No Processing time 36 minutes 20 seconds Memory usage 9.53 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 26 seconds UV mapping memory usage 3.85 GB Blending time 26 minutes 59 seconds Blending memory usage 35.38 GB Date created 2024:05:23 13:30:08 Software version 2.1.0.17532 File size 865.94 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 1 hours 13 minutes Memory usage 3.88 GB Date created 2024:05:23 14:36:10 Software version 2.1.0.17532 File size 678.22 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
