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VisionMap A3 Quasi-Panoramic Model Implementation in Photomod 5.0 Racurs 2010.

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Presentation on theme: "VisionMap A3 Quasi-Panoramic Model Implementation in Photomod 5.0 Racurs 2010."— Presentation transcript:

1 VisionMap A3 Quasi-Panoramic Model Implementation in Photomod 5.0 Racurs 2010

2 VisionMap Proprietary A3 - Aerial Photogrammetric System Aerial Survey Digital Large Frame Camera Ground Processing System

3 VisionMap Proprietary Visionmap A3 Differentiators  Very High productivity of the Aerial Survey and Processing  Vertical and Oblique images in one flight by one camera  Fully automatic Orthophoto production

4 VisionMap Proprietary A3 – Rotating Framing Camera 35 kg Weight (camera + on-board computer) 50*50*40 cmSize 15 minInstallation time on the plane up to 720 MpixFrame size 9 micronPixel size 300 mmFocal lengths RGBColor 12 bitColor depth Forward, Roll, Vibration (FMC,RMC,VC) Motion Compensation Up to 10 hours of flightOn-board storage Dual-frequency GPSGPS No neededIMU No neededStabilizer mount

5 VisionMap Proprietary How it works ? Video >

6 VisionMap Proprietary SLF - Super large frames Flight Direction Single Frame Super Large Frame – up to 720 Mpix Lenses Sweep Movement Double Frame  Smooth sweep movement;  33 double frames per sweep;  Along strip overlap between frames 2%;  Cross strip overlap between frames 30%;  An overlap between two sweeps – determinable

7 VisionMap Proprietary SLF characteristics at minimal speed with > 70% side overlap 280 Ground speed (km/hour) 8,3006,7005,0003,3001,600Flight Altitude (m) 25.020.015.010.05.0Nadir GSD (cm) 43.434.726.016.55.6Oblique GSD (cm) 1,9681,5741,181787394SLF Short Side (m) 23,61318,89014,1688,7771,674SLF Long Side (m) 33 3216Number of double-frames 2.9 2.60.8SLF volume (GB) 63.4240.5922.839.150.70A3 SLF area (sq.km) 14.069.005.062.250.56RC30 frame area (sq.km) 12.247.834.401.960.49Camera 1 frame area (sq.km) 6.644.252.391.060.27Camera 2 frame area (sq.km) 5.653.612.030.900.23Camera 3 frame area (sq.km)

8 VisionMap Proprietary SLF characteristics at maximal speed with > 60% side overlap 630510450400330Ground speed (km/hour) 8,3006,7005,0003,3001,600Flight Altitude (m) 25.020.015.010.05.0Nadir GSD (cm) 41.933.022.612.35.4Oblique GSD (cm) 1,9681,5741,181787394SLF Short Side (m) 22,38617,49311,2484,7601,333SLF Long Side (m) 32 292113Number of double-frames 2.6 2.11.10.6SLF volume (GB) 58.8236.4316.614.170.54A3 SLF area (sq.km) 14.069.005.062.250.56RC30 frame area (sq.km) 12.247.834.401.960.49Camera 1 frame area (sq.km) 6.644.252.391.060.27Camera 2 frame area (sq.km) 5.653.612.030.900.23Camera 3 frame area (sq.km)

9 VisionMap Proprietary Measurements accuracy – in-strip SLFs α P1 P2 H L Q B P1, P2 - SLFs (sweeps) B - Sweep Base (along flight) L – Nadir Intersection Ray Distance α – Nadir Sweep Intersection angle H - Altitude above ground P1 P2 B Q Q' α α'α'  H Lmax L L' L' - Oblique Intersection Ray Distance α' - Oblique Sweep Intersection angle  - Oblique Max. angle Lmax - Sweep Max Oblique Distance

10 VisionMap Proprietary Measurements accuracy – inter-strip SLFs P1, P2 - SLFs (sweeps) B - Strip Base (between adjacent strips) L – Intersection Ray Distance α – Strip Intersection angle H - Altitude above ground P1P2 B Q α HH L

11 VisionMap Proprietary 83006700500033001600Flight Altitude (m) 25.020.015.010.05.0Nadir GSD1 (cm) 41.933.022.612.35.4Oblique GSD2 (cm) 984787649433236Sweep Base (along flight, m( 8.5 7.7 7.1Sweep Base Ratio (Z/B) 3.4 3.7 4.1 Nadir_Sweep Intersection angle (from Nadir, deg) 2.0 2.53.03.8 Oblique_Sweep Intersection angle (deg) 0.080.060.040.030.02Nadir_Accuracy on XY (m) 0.900.720.490.330.15Nadir_Accuracy on Z (m) 2.031.560.830.290.07Oblique_Accuracy on XY (m) 1.511.190.740.400.16Oblique_Accuracy on Z (m) Measurements accuracy – in-strip SLFs

12 VisionMap Proprietary 83006700500033001600Flight Altitude (m) 25.020.015.010.05.0Nadir GSD1 (cm) 6995559637281892529Sweep Base (across flight, m( 1.2 1.31.83.2Sweep Base Ratio (Z/B) 22.8 20.415.89.0 Nadir_Sweep Intersection angle (from Nadir, deg) 0.080.070.050.030.02Nadir_Accuracy on XY (m) 0.150.120.100.080.07Nadir_Accuracy on Z (m) Measurements accuracy – inter-strip SLFs

13 VisionMap Proprietary PHOTOMOD Support of VisionMap Data  Supports quasi-panoramic model stereo (from in-strip SLFs).  Supplies all PHOTOMOD instruments of stereo digitizing.  Allows displaying and working with several stereopairs simultaneously.  Support of inter-strip stereo is under way.

14 VisionMap Proprietary Conclusion  A3 SLF area significantly larger than the frame area of other cameras  A3 SLF is very useful for the large area stereo- compilation, monitoring and photo-interpretation  Inter-strip SLF measurements accuracy is better than in-strip accuracy  Inter-strip SLFs are recommended for the large scale stereo-compilation


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