Transcript VisionMap A3 from Vision to Maps!

VisionMap A3
Quasi-Panoramic Model
Implementation in
Photomod 5.0
Racurs 2010
A3 - Aerial Photogrammetric System
Aerial Survey Digital
Large Frame Camera Ground Processing System
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
VisionMap Proprietary
A3 – Rotating Framing Camera
Weight (camera + on-board
computer)
Size
Installation time on the plane
Frame size
Pixel size
Focal lengths
Color
Color depth
Motion Compensation
On-board storage
GPS
IMU
Stabilizer mount
35 kg
50*50*40 cm
15 min
up to 720 Mpix
9 micron
300 mm
RGB
12 bit
Forward, Roll, Vibration
(FMC,RMC,VC)
Up to 10 hours of flight
Dual-frequency GPS
No needed
No needed
VisionMap Proprietary
How it works ?
Video >
VisionMap Proprietary
SLF - Super large frames
 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
Single Frame
Flight
Direction
Lenses
Sweep
Movement
Double Frame
Super Large Frame
– up to 720 Mpix
VisionMap Proprietary
SLF characteristics at minimal speed
with > 70% side overlap
Ground speed (km/hour)
280
280
280
280
280
1,600
3,300
5,000
6,700
8,300
Nadir GSD (cm)
5.0
10.0
15.0
20.0
25.0
Oblique GSD (cm)
5.6
16.5
26.0
34.7
43.4
SLF Short Side (m)
394
787
1,181
1,574
1,968
SLF Long Side (m)
1,674
8,777
14,168
18,890
23,613
Number of double-frames
16
32
33
33
33
SLF volume (GB)
0.8
2.6
2.9
2.9
2.9
A3 SLF area (sq.km)
0.70
9.15
22.83
40.59
63.42
RC30 frame area (sq.km)
0.56
2.25
5.06
9.00
14.06
Camera 1 frame area (sq.km)
0.49
1.96
4.40
7.83
12.24
Camera 2 frame area (sq.km)
0.27
1.06
2.39
4.25
6.64
Camera 3 frame area (sq.km)
0.23
0.90
2.03
3.61
5.65
Flight Altitude (m)
VisionMap Proprietary
SLF characteristics at maximal speed
with > 60% side overlap
Ground speed (km/hour)
330
400
450
510
630
1,600
3,300
5,000
6,700
8,300
Nadir GSD (cm)
5.0
10.0
15.0
20.0
25.0
Oblique GSD (cm)
5.4
12.3
22.6
33.0
41.9
SLF Short Side (m)
394
787
1,181
1,574
1,968
SLF Long Side (m)
1,333
4,760
11,248
17,493
22,386
Number of double-frames
13
21
29
32
32
SLF volume (GB)
0.6
1.1
2.1
2.6
2.6
A3 SLF area (sq.km)
0.54
4.17
16.61
36.43
58.82
RC30 frame area (sq.km)
0.56
2.25
5.06
9.00
14.06
Camera 1 frame area (sq.km)
0.49
1.96
4.40
7.83
12.24
Camera 2 frame area (sq.km)
0.27
1.06
2.39
4.25
6.64
Camera 3 frame area (sq.km)
0.23
0.90
2.03
3.61
5.65
Flight Altitude (m)
VisionMap Proprietary
Measurements accuracy – in-strip SLFs
P1
B
P2
P2
B
L
α

H
P1
Q
P1, P2 - SLFs (sweeps)
B - Sweep Base (along flight)
L – Nadir Intersection Ray Distance
α – Nadir Sweep Intersection angle
H - Altitude above ground
H
L
α
Lmax
L'
α'
Q
Q'
L' - Oblique Intersection Ray Distance
α' - Oblique Sweep Intersection angle
 - Oblique Max. angle
Lmax - Sweep Max Oblique Distance
VisionMap Proprietary
Measurements accuracy – inter-strip SLFs
B
P1
H
P2
H
L
α
Q
P1, P2 - SLFs (sweeps)
B - Strip Base (between adjacent strips)
L – Intersection Ray Distance
α – Strip Intersection angle
H - Altitude above ground
VisionMap Proprietary
Measurements accuracy – in-strip SLFs
Flight Altitude (m)
1600
3300
5000
6700
8300
Nadir GSD1 (cm)
5.0
10.0
15.0
20.0
25.0
Oblique GSD2 (cm)
5.4
12.3
22.6
33.0
41.9
Sweep Base (along flight, m(
236
433
649
787
984
Sweep Base Ratio (Z/B)
7.1
7.7
7.7
8.5
8.5
Nadir_Sweep Intersection angle
(from Nadir, deg)
4.1
3.7
3.7
3.4
3.4
Oblique_Sweep Intersection
angle (deg)
3.8
3.0
2.5
2.0
2.0
Nadir_Accuracy on XY (m)
0.02
0.03
0.04
0.06
0.08
Nadir_Accuracy on Z (m)
0.15
0.33
0.49
0.72
0.90
Oblique_Accuracy on XY (m)
0.07
0.29
0.83
1.56
2.03
Oblique_Accuracy on Z (m)
0.16
0.40
0.74
1.19
1.51
VisionMap Proprietary
Measurements accuracy – inter-strip SLFs
Flight Altitude (m)
1600
3300
5000
6700
8300
Nadir GSD1 (cm)
5.0
10.0
15.0
20.0
25.0
Sweep Base (across flight, m(
529
1892
3728
5596
6995
Sweep Base Ratio (Z/B)
3.2
1.8
1.3
1.2
1.2
Nadir_Sweep Intersection angle
(from Nadir, deg)
9.0
15.8
20.4
22.8
22.8
Nadir_Accuracy on XY (m)
0.02
0.03
0.05
0.07
0.08
Nadir_Accuracy on Z (m)
0.07
0.08
0.10
0.12
0.15
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.
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
VisionMap Proprietary