The superimposition software generates a complete representation of 
the digital map by central perspective transformations onto the 
image plane. To enable the digital image to fit the photo image 
exactly at any time the digital data must be dynamically processed 
with any movement of the plotting station (Fig. 1). 
  
sends data 
  
  
  
  
  
  
  
  
  
  
  
  
DIGITAL MAPPING to be superimposed 
SOFTWARE 
SUPERIMPOSITION 
SOFTWARE 
P 
sends graphic and : 
alphanumeric data service request 
SUPERIMPOSITION 
  
CONTROL UNIT 
  
  
sends movement 
of floating mark 
  
  
  
  
HIGH 
RESOLUT ION 
gets feature 
locations CRT 
prete 
  
. OPTICAL SYSTEM 
  
  
\ / EYEPIECES 
oy VIEWER 
ANALYTICAL 
STEREOPLOTTER 
  
  
  
  
  
  
  
PHOTO PHOTO 
LEFT RIGHT 
  
  
  
VIEWER ELECTRONICS 
  
  
  
  
  
  
Fig. 1: Ideal Integration of Superimposition onto Analytical 
Stereoplotter 
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