the photo 
are known, 
ne the po 
jin. 
v 
n any 
all define 
leduot the 
sition of 
nish the 
lesoribed 
he photo 
fernal 
by means 
ingents 
spective 
; we shall 
ane XZ pa 
1ates of 
m the per 
x0 E 
Zip P/, 
  
     
  
  
  
   
   
     
    
  
     
      
  
     
    
   
    
    
  
    
  
    
   
  
We define the azimuth rotation « between the two systems X Y Z and 
X17, T TT 
¥ Sy 
t e ol = Aa 
Y "Xm 
and then we have 
4 TS UHR LA 
r = mene HH tt T os mea 
X | t I um 1 | e dy 
  
where : 
cos o -5in 06 0 
d. = | aing d. x| cos à si 0 
ley 
o Ö 
We shall now consider the tangents of internal direction t , t rela 
tive to the same point. We define the matrix M (S, d. 2 which sites the 
angular position of the camera for y = 0, the matrix Rh (5 (Pos t9 3, with 
4^ "r4. 45, 0 "JC, which defines the position of the intornal sy 
stem P, with respect to the internal system x y z in 0. 
We obtain the tangents Uxor tvos with reference to a system in FP pa 
rallel to the system x y z with the 
oo 0 
"^ 
! + B | [t t (1 x (3) 
Kon heat. 0f . Lost | *. ts 1[. 8