656 
Fig. L2 : A rectangle is transformed into a 
search-environment that is used to look 
for completion of other structures (L’s, U’s) 
Fig. L3 : Part of Spot image, XS1 band Fig. L4 : Path network extracted 
Aug. 87, showing a coniferous forest from Fig. L3 according to the 
region near the Atlantic coast in Portugal, generic model of Case Study 1 
corresponding to a 4 * 2 km 2 area