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General / Re: PhotoScan Handling Different Flights
« on: February 21, 2018, 05:09:59 PM »
On both flights the altitude above ground were closely fixed despite the differences on terrain altitude (more than 200m of unevenness) due to DEM terrain tracking.
Flight #1:
Flying altitude: 60.4 m
Ground resolution: 2.62 cm/pix
Camera stations: 88
Tie points: 66,031 of 69,358
Projections: 154,798
Reprojection error RMS: 0.326 pix
Reprojection error MAX: 9.201 pix
Mean key point size: 2.43 pix
Effective overlap: 2.38
Using geotags. Xerror: 0.61m, Yerror: 0.98m Zerror: 0.55m, Total error: 1.29m
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Flight #2:
Flying altitude: 86.9 m
Ground resolution: 3.77 cm/pix
Camera stations: 60
Tie points: 62,454 of 65,961
Projections: 151,253
Reprojection error RMS: 0.582 pix
Reprojection error MAX: 16.528 pix
Mean key point size: 4.05 pix
Effective overlap 2.50
Using geotags. Xerror: 1.10m, Yerror: 1.73m, Zerror: 0.93m, Total error: 2.26m
----------------------------------------------------------------------------------------------------------------
Flights 1 + 2: (processed together)
Flying altitude: 70.2 m
Ground resolution: 3.04 cm/pix
Camera stations: 149
Tie points: 130,728 of 138,234
Projections: 312,085
Reprojection error RMS: 0.483 pix
Reprojection error MAX: 16.308 pix
Mean keypoint size: 3.26 pix
Effective overlap: 2.463
Using geotags. Xerror: 0.86m, Yerror: 1.40m, Zerror: 0.91m, Total error: 1.88m
----------------------------------------------------------------------------------------------------------------
Merged chunks from individual processed flights 1 and 2
This uses the PS feature of Workflow > Merge chunks.... (merge tie points)
Flying altitude: 71.2m
Ground resolution: 3.09 cm/pix
Camera stations: 148
Tie points: 128,485 of 135,319
Projections: 306,051
Reprojection error RMS: 0.471 pix
Reprojection error MAX: 16.528 pix
Mean keypoint size: 3.23 pix
Effective overlap: 2.44
Using geotags. Xerror:0.85m, Yerror: 1.34m. Zerror: 1.58, Total error: 1.74m
----------------------------------------------------------------------------------------------------------------
Chunks aligned + merged from individually processed flights (chunks) 1 and 2
This uses the PS feature of Workflow > Align chunks... Then, Merge chunks.... (merge tie points)
Flying altitude: 71.2m
Ground resolution: 3.09 cm/pix
Camera stations: 148
Tie points: 128,485 of 135,319
Projections: 306,051
Reprojection error RMS: 0.471 pix
Reprojection error MAX: 16.528 pix
Mean keypoint size: 3.23 pix
Effective overlap: 2.44
Using geotags. Xerror:1.76m, Yerror: 1.38m. Zerror: 1.36, Total error: 2.62m
Flight #1:
Flying altitude: 60.4 m
Ground resolution: 2.62 cm/pix
Camera stations: 88
Tie points: 66,031 of 69,358
Projections: 154,798
Reprojection error RMS: 0.326 pix
Reprojection error MAX: 9.201 pix
Mean key point size: 2.43 pix
Effective overlap: 2.38
Using geotags. Xerror: 0.61m, Yerror: 0.98m Zerror: 0.55m, Total error: 1.29m
----------------------------------------------------------------------------------------------------------------
Flight #2:
Flying altitude: 86.9 m
Ground resolution: 3.77 cm/pix
Camera stations: 60
Tie points: 62,454 of 65,961
Projections: 151,253
Reprojection error RMS: 0.582 pix
Reprojection error MAX: 16.528 pix
Mean key point size: 4.05 pix
Effective overlap 2.50
Using geotags. Xerror: 1.10m, Yerror: 1.73m, Zerror: 0.93m, Total error: 2.26m
----------------------------------------------------------------------------------------------------------------
Flights 1 + 2: (processed together)
Flying altitude: 70.2 m
Ground resolution: 3.04 cm/pix
Camera stations: 149
Tie points: 130,728 of 138,234
Projections: 312,085
Reprojection error RMS: 0.483 pix
Reprojection error MAX: 16.308 pix
Mean keypoint size: 3.26 pix
Effective overlap: 2.463
Using geotags. Xerror: 0.86m, Yerror: 1.40m, Zerror: 0.91m, Total error: 1.88m
----------------------------------------------------------------------------------------------------------------
Merged chunks from individual processed flights 1 and 2
This uses the PS feature of Workflow > Merge chunks.... (merge tie points)
Flying altitude: 71.2m
Ground resolution: 3.09 cm/pix
Camera stations: 148
Tie points: 128,485 of 135,319
Projections: 306,051
Reprojection error RMS: 0.471 pix
Reprojection error MAX: 16.528 pix
Mean keypoint size: 3.23 pix
Effective overlap: 2.44
Using geotags. Xerror:0.85m, Yerror: 1.34m. Zerror: 1.58, Total error: 1.74m
----------------------------------------------------------------------------------------------------------------
Chunks aligned + merged from individually processed flights (chunks) 1 and 2
This uses the PS feature of Workflow > Align chunks... Then, Merge chunks.... (merge tie points)
Flying altitude: 71.2m
Ground resolution: 3.09 cm/pix
Camera stations: 148
Tie points: 128,485 of 135,319
Projections: 306,051
Reprojection error RMS: 0.471 pix
Reprojection error MAX: 16.528 pix
Mean keypoint size: 3.23 pix
Effective overlap: 2.44
Using geotags. Xerror:1.76m, Yerror: 1.38m. Zerror: 1.36, Total error: 2.62m