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and on the other side the local information 
density has to be reduced (Powitz, 1991). 
In the following paragraphs several software 
tools for model processing and of course 
for cartographic eneralization developed 
at the IfK called CHANGE will be introduced. 
Here first computer solutions apply to 
digital landscape model-objects (DLM-objects) 
acquired with high resolution or digitized 
in large scale for the feature classes 
“traffic roads” and “buildings” (see figure 1 
and figure 2). 
4. CONDITIONS FOR GENERALIZATION 
AND DLM-DATA 
As a digital cartographic database for graphic 
presentation either direct in the original scale 
or in a smaller scale every spatial GlS-data 
of a digital landscape model in vector format 
  
Generalization-Software 
CHANGE 
  
  
  
  
  
Topographic 
data base 
Ts 
Q 
£70 
  
  
Lr 
Program-System 
for 
Computer- Assisted 
Generalization 
L Generalization of £u U 
Generalization of 
Traffic Network 
Identification of 
Representation Conflicts [7] [5/7 
  
  
  
  
Protocol 
File 
  
Cartographic 
data base , : 
  
  
  
Figure 1: Software-Concept for Computer-Assisted Generalisation with CHANGE 
665