Yuri Knizhnikov 
  
  
  
  
  
(syuouro[nos 
ur sIoyrenD uonejiqey) 
€ [249] 
  
  
  
  
  
  
(s1o11enb uonenqey 
Jo ue[d e Surquiosap 
sSurp[mnq o31e[) 
& [9^3] 
  
  
  
  
  
  
  
  
  
(s1ioy1enb uonvirqeq 
opisul 
suononijsuoo pozis-[[euis) 
[ [9A] 
  
  
  
  
  
  
  
  
  
  
  
000 0S : I 000 SZ : I 000 01 : I 
uonejo1d1ojur jo JWIQYIS so[eos uo soSeuir ooeds . 3ja1osip Jo uorjezi[e1ouor) UOreulrogjutrooS Jo s[2427] 
= v = og Le iu = > OO ci x, Zn + C. 0 
  
Figure 4. Generalization of discrete space images for obtaining the information of the definite level 
  
  
507 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B3. Amsterdam 2000.