International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B3. Istanbul 2004
Figure 5. Test field
11
264
-"
Lese
0 50100mm
Figure 6. Error distribution of XY coordinates by the IBIM
space distances were measured by the motorized total station
(SOKIA MET2NV; distance accuracy: 1mm, angle accuracy:
x27)
[mage coordinates for each point were given as the center of
area gravity by image processing. Accuracy for 3D coordinates
of check points was compared with space resection using 9
GCPs.
In Figure 6, No. 1,3,10,11,12,14 points are temporal GCPs, and
No. .1,3,10,11,12,14,13.24 25. are. GCPs. for. the, resection
method. Therefore, No. 2,4,5,6,7,8,9,13,16,23,26 are common
check points for the both method. Table 1 and 2 show
calibration results. Table 3 shows the RMSE for X, Y, XY and
Z coordinates regarding 11 check points.
Table 1: Calibration result of exterior orientation parameters
Left Right
Xo 2743.047 mm 11145.012 mm
Yo 565.820 mm 601.626 mm
Zo 20903.188 mm 20941.344 mm
w | 33% 44.47 5-50, 'SS.67
6 15020 42.07 «115021, 00,47
K 0 200" 235.97 - 0° 167 14.27
Table 2: Calibration result of interior orientation parameters
Xo 1024.045 pixels
Yo 759.183 pixels
f 7.216 mm
a, 288.830
a, 1.319
k 0.3996E - 07
Table 3: The R.M.S.E. for X, Y, XY, Z coordinates
IBIM Space resection
X 21.434 mm 4.182 mm
N! 10.424 mm 6.055 mm
XY 16.624 mm 5.204 mm
Z 9.504 mm 9.388 mm
From Table 3, it can be seen that the accuracy of Z coordinate
shows the same values that was computed resection method
using 9 GCPs. However, the accuracies of X, Y, XY show
lower values. In particular, X accuracy show quite lower.
On the other hand, Figure 6 shows error distribution of XY
coordinates by the IBIM (residual values of XY coordinates
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