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Further, how to structure the computer operations in order to obtain 
consistently quick and immediate response time at the interactive 
level, while fully complementing the use of CPU with background 
processing. 
Three dimensional viewing and tracking in the model space provides - 
three dimensional map data. The X,Y,Z coordinates with appropriate 
coding are stored in a common data base, and can be retrieved and 
processed to represent any set of particular information displayed 
in three dimensions. With extensive symbolism large amount of int- 
errelated information can be so displayed, without overexposing the 
user. In this way, the all-digital work station can be regarded at 
the same time as a universal, all purpose information retrieving 
station. 
REFERENCES: 
L.G.Hobrough: Automatic Stereo Plotting. (Phot. Eng. 1959). 
S.Bertram: Automatic Map Compilation. (Phot. Eng. 1962). 
.J.V.Sharp (at.al): Automatic Map Compilation Using 
Digital Techniques. (Phot. Eng. 1965). 
  
  
B.S.Schulz: Digitale Bildverarbeitung in der Abteilung 
Photogrammetrie des IFAG (N.K.V. 1976). 
T.J.Keating & P.Wolf: Analytical Photogrammetry from 
Digitized Image Densities (ISP,Comm.III,Helsinki,1976). 
T.Sarjakoski: Concept of a Completely Digital 
Stereoplotter. (Ph.J.of Finland,1981). 
J.B.Case: Digital Stereo Comparator/Compiler. 
(ISP Comm.II Symposium, 1982, Ottawa). 
M.M.Allam: Limitation of Current Automated Photogrammetric 
Instrumentation and the Potential of Future Fully 
Automated Systems (ISP Comm.II Symp. 1982, Ottawa). 
  
  
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