ISPRS, Vol.34, Part 2W2, “Dynamic and Multi-Dimensional GIS”, Bangkok, May 23-25, 2001
197
Table 5-3 computation result
Interior
orientation
parameters
xO(pixel)
yO(pixel)
F(pixel)
-274.50
-236.98
2604. 76
Exterior
orientation
parameters
U)
K
-0.6910
0.5642
0.9172
7üM
Xs(mm)
Ys(mm)
Zs(mm)
57910.90
-47492.94
54088.57
Cij
x(pixel)
y(pixel)
X m
ym
~Z nr ~
X
Y
Z
1
1.0007
-217.71
196.13
-7673.37
6912.71
-91805.01
-2.53x10°
2.08x10°
-2.36x10°
2
1.0001
-215.74
195.10
-7599.46
6872.26
-91751.15
100
2.41x10" a
-2.74x10' A
3
0.9994
-216.07
197.39
-7605.50
6947.91
-91686.03
100
-2.83x10 s
100
4
1
-218.04
198.42
-7679.40
6988.36
-91739.89
1.75x10 s
-1.44x10 s
100
5
1.0013
-215.69
197.48
-7606.28
6964.09
-91858.48
-1.21x10‘ fa
100
-1.13x1 O’ 6
6
1.0006
-216.01
199.76
-7612.32
7039.75
-91793.36
2.64x10' s
99.99
100
7
0.9999
-214.04
198.73
-7538.41
6999.29
-91739.50
100
99.99
100
figure 5-1
real test
We used a piece of real image, The size of the image is 640x480
pixels, as illustrated in figure5-2.
figure 5-2 Original image used for test
Firstly, edges of objects (e.g. box) in the image are detected
semi-automatically, we select corners, which are really in
intersection point of two or more straight lines, as distinct points.
The experimental results are shown in Table5-4.Three rendered
views of the reconstructed box is in figure5-3.
Table5-4 calibration results of proposed method
Xs
(cm)
Ys
(cm)
Zs
(cm)
<P
U)
K
xO
(pixel)
zO
(pixel)
(pixel)
-53.28
-62.01
21.75
1.3635
0.8825
-1.4452
-77.41
6.30
1628.24