x-X x-1 Sin 
E. = S = 
a =, y 
  
We again define the coordinates x. y* on the developed photograms 
+ 
x" sx y" x pp 
The angle f is taken equal to zero in correspondence with the axis x* 
and ranging from - ^Y «9 Tf the axis x¥ is in the scanning plane X= 0, 
and if the conditions of adjustment are satisfied, we have f =), otherwise 
the difference fi - is equal to a known angle. 
Anyway we haves 
z = - p cos ß y = p sinf 
for which definitively we have the internal tangents of direction expressed 
as a function of the coordinates x*. y*, of the developed photogram 
  
, XI sin! . .É-ISIX, 
x p cos p oos y*/p 
* 
t = - tef = - te Lt; 
y p Das 
z* 
5 = = cotgß = - cotg x ; 
Qo Xin _ x*-I siny 
a p sing p sin y*/p 
3 - EXTERNAL ORIBNTATION OF THE PANORAMIC CAMERAS. 
3.1 - DESCRIPTION OF THE SHOOTING OF A PANORAMIC PHOTOGRAM. INDEPENDENT VA 
RIABLE TO WHICH THE MOVEMENT OF THE CAMERA IS REFERRED. 
The shoot of a frame photogram can be accomplished in general instan 
taneously, the one of a panoramic photogram on the contrary is accomplished 
in a perceptible lapse of time. This means that for the frame camera, the 
external orientation parameters (coordinates of the perspective center of the 
photogram X , Y , Z , and the angular values 9, ¢,w, which define the posi 
tion of the” int&rnal reference system) are those corresponding at the in 
stant of the shooting and are valid for all the points on the photogram. For 
the panoramic camera the orientation vary during the shooting of the photo 
gram, consequently to every image imprinted on the film correspond different 
orientation parameters. The external orientation of the panoramic camera is 
known when the orientation parameters are known as a function of the time 
that is the functions; 
  
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