- 894 - 
Fig. 1 Transitional zone between the densified cote of 
Brussels and the suburbs (Uccle) 
Sign. 2 refers to densified housing; ©6,to concrete roofs and 
infrastructures; M and 4 (class 4 and 5) form a transition with 
residential settlements; = refers to class 7 (see text p. 890). 
Open spaces and tree covered parks are left in white. Sign - re- 
presents water pools or little valleys but also dark shadowed 
areas (unsupervised classification) 
By courtesy of the Ministère des Travaux Publics, Bruxelles, 
feuille 31, 02/05/71, n 515 
Fig. 2 Southern fringe of Brussels 
Built up areas and infrastructures are left in white.Sign B refers 
to meadows and fodders; O and 1, (sometimes with ©) to bare soils, 
waste lands and highly reflecting surfaces such as the cemetery 
at upper left corner. Sign M associated with O, 1 and . repre- 
sents crops (bottom of image) highly reflecting in march (the 
reflection of soils being still predominant). Sign - refers 
to wooded areas associated with scattered villas. 
Photo: By courtesy of the Ministère des Travaux Publics, 
Bruxelles, may 1971, scale of photography is 1/15 ooo, 
and that of unsupervised classification, 1/23 ooo 
Fig. 3a The airfield of Zaventhem on an aerial photograph and 
the corresponding unsupervised classification of LANDSAT (march 
73) 
The runway pattern is given by the regular disposal of signs -, 
1 and X. The bright concrete parts correspond to -; the darkest 
to X (especially brake marks).Visitor parkings and Terminal are 
left in white. The roofs of some shelters are represented by 
sign B but it also may be the case for other land uses such as 
taxitracks. Notice two antennas from terminal to the planes in 
A and B. Main runway axes are underlined by a black line to help 
identification. 
Photograph: By courtesy of the Ministère des Travaux 
Publics, Bruxelles, 1971/05/07, feuille 31, 112, 1/15 ooo. 
Fig. 3 b The new Campus of the Free University of Brussels under 
construction 
The same classes of values as for Zaventhem but without any clear 
organization except for sign B which almost stands round about 
other higher values (sandy and high reflecting patches). 
    
  
   
   
  
   
  
  
  
   
   
   
   
   
  
   
   
   
  
    
  
  
   
  
  
  
  
  
  
  
   
   
    
   
       
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