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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B4. Istanbul 2004 
registration points and these need only be approximately 
located. The hierarchical image matching, sensor model 
refining and colour merging can still be applied in the same 
way. 
References: 
Bergholm, F., 1987. Edge forcusing. IEEE Transactions on 
pattern analysis and machine intelligence, vol. PAMI-9, no. 6, 
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Canny, J., 1986. A computational Approach to edge detection. 
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Harris, C., and Stephens, M., August 1988. A combined corner 
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A 
  
   
      
Mme, Ae "uM HM Fi 
3. Part of SPOTS 1A THR image in full resolution 
2.5m/pixel © CNES 2003 
  
Figure 
       
943 
Iverson L.A. and Steven, W. Z., 1995. Logical/linear operators 
for image curves. /EEE Transactions on pattern analysis and 
machine intelligence, vol. 17, no. 10, pp. 982-996 
Kwoh, L.K. and Huang X., 2003. Automatic Image Registration 
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Nalwa, V.S. and Binford, T.O., 1986. Logical/linear operators 
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Rothwell, C.A., Mundy, J.L., Hoffman, W. and Nguyen, V.D., 
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SPOT Satellite Geometry Handbook, 2002., S-NT-73-12-SI. 
      
  
Figure 4. Overview of SPOTS 1A XS image 
© CNES 2003 
   
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Figure 5. Part of SPOTS 1A multispectral image in full 
resolution 10m/pixel © CNES 2003