8 
13 
[Fx Fy] ij 
the numerical values of the 
functions of equation 3.01 
after substituting for the 
unknown parameters by their 
approximate values. 
Equation 3.02 represents the fundamental relationship on which sub-block 
triangulation is based. Each ray in the sub-block yields one such equa 
tion. An object point, Oj, appearing in m photographs, thus common to 
m rays, yields the system: 
Vj + B 3 D - Cj E j 
.... 3.03 
where : 
v| ... v* 
* m 
J 3 
D 
Bi 
0 
• • • 
0 " 
= 
0 
• ll 
0 
0 
0 
B 
- 
m 
" t 
t 
t" 
■ 
L d > 
d 2 
ill 
D mJ 
ft 
„t 
tl 
C2 
• • • 
c m 
s 
A 
F t 
r 2 
ill 
F 3 
-»3 
For all n points appearing in m photographs, the following is the 
ensemble of observation equations: 
V + BD-CÏÏ = -F 
... . 3.04