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A a = | | RA RA 
Nn ESTE (ATRL 
F. Ehe o ces RAT i li AAN 
ST nm EA pP 
RM ri Mord i Qe A 
Ski a 4 4 MLE TE N HATT AH 
É | K % ZZ — WI il 
Gina ip] nu C IA bot S LM 
CA ol N 
ro d pee D 
Ç Cd 
(a) 
Figure 4. Classification examples. (a) Top of the library in Figure 3(e) generated by only the horizontal edges 
Which are above the topographic surface. (b) An incomplete library gener i i 
; ated b 
edges which are above the topographic surface. ] ys 06 Cy SEMI sees and Vertzentol 
  
(a) (b) 
Figure 5. The re-interpolated DEM surface. (a) and (b) Two view angles of the re-interpolated DEM surface. The 
building walls in this figure are more vertical than those in Figure 2(c). 
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