489 
Table 3 Mean Error of Mismatch and Computing Time 
(search length : 21) 
Window 
Mean Error(pixel) 
Computing Time(millisecond) 
Size 
Correlation 
Absolute 
Correlation 
Absolute 
3x3 
— 
2.10 
11 
4 
5x5 
3.85 
1.88 
22 
7 
9x9 
1.59 
1.64 
52 
16 
11 x 11 
1.60 
2.56 
80 
23 
33 x 33 
4.25 
4.26 
655 
191 
Correlation : Maximum Correlation Coefficient Method 
Absolute : Minimum Absolute Sum Method 
Table 4 Mean Errors and Maximum Errors of Height 
Measurement between Automated Calculation 
and Given DTM.(number of G.C.P=14 points) 
Stereo Angle 
Single Equation 
Simultaneous Equation 
45° 
1.003 
0.836 
(10.6) 
(11.8) 
60° 
0.963 
0.941 
(9.65) 
(8.95) 
unit¡pixel ( ) Maximum Errors 
Table 5 Mean Error of Height Measurement with 
Respect to number of G.C.P. and Stereo 
Angle, by Independent Solution 
Number of 
G.C.P 
Stereo 
Angle 
45° 
60° 
position 
height 
position 
height 
10 
0.458 
0.809 
0.491 
1.440 
14 
0.327 
0. 773 
0.440 
0.460 
18 
0.405 
0.485 
0.437 
0.436 
22 
0.338 
0.432 
0.384 
0.384