atic 
      
   
    
   
  
  
  
       
        
     
  
         
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
t or Third Level 
// 
the 7 Second Level 
can SSSP NCC 
A 
| be 
the ; 
First Level gl td 
able SS 
uce 
Original level 
it Target image pyramid Search image pyramid 
'ast 
en, Fig 1. Tracing of I.P and T.P. through the image pyramid 
5 of 
| of 
04- 
Initial position 
age 
5/2, j 
der NCC value C1 before matching 
Ing. [ees — > 
ihe 
Target window = 
  
  
  
Search window 
  
final resampled position 
  
NCC value C2 after matching 
BE Tap fb A A HAA / 
  
  
  
Target window et 
  
  
  
Search window 
Fig 2. Relationship between target and search window before and after LSM. 
401 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B2. Vienna 1996