38 
as large as possible. This is demonstrated in the following example. A test object 
consisting of 18 points in two planes is photographed using a wide angle camera 
with the geometric conditions given in Fig. 7. The weight and correlation num 
bers are given in Table 1 for Ah = 0.1 h and in Table 2 for Ah = 0.5 h. If we 
use a test object with 4 planes (9 points in 3 planes and 18 points in the 4th) as 
indicated in Fig. 8 to calibrate a normal angle camera with rectangular picture 
we obtain the weight and correlation numbers in Table 3. 
Fig. 7. 
Geometric properties of 
photography of a three-di 
mensional test object con 
sisting of eighteen point in 
two planes. The weight 
and correlation numbers of 
the corresponding solution 
are given in Tables 1 and 
2. 
7- 
h 
‘Table 1. Weight and correlation numbers. Wide angle. Ah — 0.1 h. 
*0 
c 
cX 0 
,y 0 
cZ 0 
C CO 
c cp 
C X 
*0 
21.49 
^0 
0 
21.49 
c 
0 
0 
38.21 
c*o 
19.38 
0 
0 
18.37 
cY 0 
0 
19.38 
0 
0 
18.37 
c Z Q 
0 
0 
—36.00 
0 
0 
34.01 
C CO 
0 
0.80 
0 
0 
0 
0 
0.64 
c cp 
—0.80 
0 
0 
0 
0 
0 
0 
0.64 
C X 
0 
0 
0 
0 
0 
0 
0 
0 
0.12