International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B6. Istanbul 2004 
  
  
4. OPEN PROBLEMS AND FUTURE STEPS 
In the paper a sustainable approch to provide maps to 
developing country referred to as "Fast Mapping" has been 
proposed. The image data source are HRSI which are going to 
become more accessible in the near future, thanks to a possible 
reduction in price, acquisition and delivering time, ease in its 
processing. 
In order to check possible critical topics and drawbacks in the 
production process, an experimental application involving an 
IKONOS image acquired over the area of university laboratory 
in Northern Italy has been carried out. Findings of this test have 
shown that, once the image is delivered, geocoding and 
orthoimage generation (if a DEM is available) can be easily 
performed by means of commercial software packages and by 
using a small set of GCPs. The quality of derived product seems 
to be good, either in geometric accuracy, and in the 
interpretability of imagery, allowing to extract vector layers. On 
the other hand, in case of mapping for a developing country, the 
avilability ofa DEM with enough accuracy and resolution is the 
real bottle-neck. Derivation of DEM from InSAR techniques 
would be an interesting solution to this problem. 
ACNOWLEDGEMENTS 
This work has been carried out under a research (COFIN 2001) 
funded by the Italian Ministry for University and Scientific 
Research (MIUR), with the title "L'uso delle immagini 
satellitari ad alta risoluzione per le analisi territoriali". We 
thank Planetek Italia for the support in IKONOS images 
purchasing, and the Lecco Laboratory of Politecnico di Milano 
for the support in GPS data acquisition. 
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