.E FLAW 
2.3 
s force several 
those stresses 
‘ess at curved 
wheels ) are 
1 way material 
flaw are break 
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sh add 1 -- 
ks ( very fine 
ppear on rail 
In process of 
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h to deep part 
  
XU 
- 
s from gauge 
of rail of those 
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rail surface is 
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e Line Camera 
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s dinge. — 
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> to distinguish 
irror by wheels 
sty part which 
leas WP gy 
n ( close to rail 
n. ( Figure 4. ) 
ecognized as à 
part, as every 
h to the Line 
that area is 
  
nn A . 
  
  
  
  
  
  
  
  
L 
Original Image Processed Image Original Image Processed Image 
Figure 6. Recorded Image data and Processed Image Data Figure 7. Recorded Image data and Processed Image Data 
  
  
; a fine file. 
n, in the Line 
ght fine bars in ( Few flaw part ) ( Cracky part ) 
Sensor scans in 
397 
) International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B5. Vienna 1996