Full text: Proceedings of a symposium held at University College London, 9 - 13 August 1971

tograms 
otherwise 
| expressed 
‘am 
PENDENT VA 
ral instan 
ccomplished 
mera, the 
center of the 
ne the posi 
t the in 
otogram. For 
' the photo 
nd different 
[cC camera is 
^ the time 
  
  
    
A task of the space resection computation is the computation of these 
functions utilizing control point on the ground and the positiors of the oarre 
sponding images. In the case of the panoramic cameras, it is necessary to de 
termine such a function only for a period of time correspond ding to the inter 
val of the exposure of each photograph. Taken then as a reference the time 
2 in which the parameters assume the values | 
\ le 
x (2), Y (23. age rea 
p p p s 
Sp 
[^] 
we can write 
1, 
rife) = rf de tev(44) 
7 (4) = 5 (*) «E M) 
P p 3 
Foy . f (An 
q (t) oU) yo = (A) 
w(t) 5,0) + FLUG) 
*6 
where At is the interval ot time between the impression of the images at the 
1e inst 
instant t and the impression of an image at the 
o : dy 
The result of this is that it should be possible 
printed image in relation with the time the impression. occur 
f.-(At) can be attributed the form C:Ât (C. = constant), or else we shall 
T | 
» 2. d - E ond ; 3 - 
assume a linear variation of the orientation parameters during the shoot 
ce every im 
‘ed. To the 
% 
ing of & photogram. 
The uniformity of the movements of the camera during the shooting of 
the photogram can be justified taking into consideration that, in general, 
the duration of the shootins of the photogram never exceeds 1 second, and 
that it is therefore unthinkable that in such a short lapse of time devia 
tions from uniform motion oan be evidenced, taking also into account that 
the camera is on an aircraft which has a considerable inertial mass. 
This naturally is not valid if we take into account the vibrations 
obviously we cannot take into conside 
de) vv 
to which the camera is subjected, but 
ration such movements in the computation of a Tass resection. 
ust the mL the six parame 
th 
tio 
ters X 8 Lu 9. $) C 9: E y m ge nd six coefficients, C? C s 
p 
Cy C e et. 
" It is now necessar 
me as an independent variable. 
y ti investigate if it is possible to assume the ti 
Let's then take the ideal Situation in which 
  
  
   
  
   
  
  
  
   
  
     
   
    
  
  
  
  
	        
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