12 
Loading (programmes, data) 
  
  
Software for 
Preparation 
Calibration of instrumental errors 
Calibration of perspective centres 
Orientation (relative, absolute; recording orient. data) 
  
  
Sheet (manuscript) preparation 
  
  
  
  
  
Software | | 
System 
  
| |Software for 
  
Restitution 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
etc. 
Control of displays 
Drafting control 
Co-ordinate transformations 
Data Compression 
Real-time Internal checking 
(strictly) Corrections for deterministic errors 
Pre-classification of data 
Control of optical units 
Q -numerical recording 
etc. 
= -Support in Aer. Triang. 
-DTM sampling 
L Profiling (e.g. speed control) 
Uni-direct | | Drafting (points, reg. lines) 
flow Correcting for determ errors 
Lt Averaging observations 
Nearly | Accuracy estimation 
— Real- Letc. 
time 
rDTM sampling (e.g. progressive, 
composite) 
Bi-direct -Gross-error detection 
flow | Drafting (with servomechan.) 
letc. 
  
Gross error detection and removal 
Corrections for deterministic errors 
Data classification 
Averaging or smoothing 
Edge editing or windowing 
Compilation of partitioned data 
  
  
  
E 
  
Software for 
Post-processing 
  
  
Co-ordinate transformation 
DTM-data conversions 
Further Data compression 
processing Interpolation 
Computation of areas, volumes, 
distances, slopes, azimuths, etc. 
Statistics (variances, distributions, 
ete.) 
  
[Coon Triangulation computation 
  
  
  
  
figure 4 
structure of a software system