a 
Figure (5) 
a) Automatic threshold edge map p — [.^. 
b) Automatic threshold edge map B = 0.8. 
d web e 
7 
507 ENT 
SR 
SS 
d C Y^ 
TS 
PE ear 
X 233 KG J» 374 
SES 
à Q 
   
     
  
  
    
  
  
    
  
  
  
    
  
  
  
  
  
Figure (6) 
Multiplying of automatically threshold and glo- 
bally threshold edge imges with each other 
34 
  
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B3. Vienna 1996 
      
      
    
   
  
  
    
   
   
  
   
    
    
  
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