PLANE APPROXIMATION METHOD FOR GENERATING LOCAL 
Figure 21: 
CCNTOUR ELEMENTS 
lıght spot 
wt» 
  
contrast 
boundary 
ES 
thin line 
(t) = Signal of the multiplier 
zigure 23: SOME RESULTS OF DIRECTION FILTERING 
CIRCULAR SCAN TECHNIQUE FOR GENERATING i a) SCANNED AREAL PHOTO, b) FIRST DERIVATIVE 
c) MASK COMPARISION, d) PLANE APPROXIMATION 
ELEMENTS 
e) CIRCULAR SCAN METHOD 
Figure 22: LOCAL CONTOUR