set of the digital images that describe the object without a 
topographical survey of the necessary control points which are 
substituted by the reflecting targets. 
The procedure is completely automatic and the user has only to 
control and discuss final results. 
The number of reflecting targets, that have to be placed on an 
object, must, in pratical application, be planned considering the 
type of camera used (e.g. metric, semimetric or non metric 
camera). 
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8. ACKNOWLEDGEMENTS 
The research has been financed by the Italian Ministry of 
Education, University and Research (MIUR) project 
COFIN2000 (Person in charge at a Nation Level Prof. Carlo 
MONTI — Person in charge at a Local Level Prof. Sergio 
DEQUAL). 
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