- 109 - 
At this point has began the study about the methods of 
presentation and investigation of the 3D model, that could be 
sectioned with specifics tools to produce horizontal and vertical 
sections complete of orthoimages and 3D edges; otherwise it 
can be used as a support in the realization of a GIS or to realize 
a promotional multimedia CD. 
An important role is assumed by new format code called 
VRML (Virtual Reality Modelling Language), that has been 
selected as the internet format to describe 3D environments. It 
is supported by most browsers and there are a few public 
demain plug-ins. VRML allows to study the 3D model in a way 
really interactive trough a simple instrument. Moreover, several 
tools, developed in java language, have alscf been implemented 
in order to demonstrate the high potential of the 3D models. 
These tools allow for example the meausurement of distance 
between points or simplify the 3D navigation by taking the user 
smoothly along a predefinied walkthrough. 
How can be seen in the previous page chart, some important 
results have been obtained from laser scanning survey using 
Surveyor software. This tool allows to section 3D model and to 
export edges, orthoimages and section profiles. These 
informations can be imported in a CAD software to edit 
architectural plates. 
3D studio software, where all the survey is stored, allows to 
make some interactive products like video and VRML that 
assume an important role for educational and promotional 
purposes. 
5. CONCLUSIONS 
This work wants to represent an example as a method of 
approach to the survey of a historical architecture, for which is 
generally very difficult find an only one investigation tool. 
Instead, is more effective search for the correct compromise that 
integrates techniques even very different each other, but 
however easy to be effectively integrated in a result that covers 
an ample range of applications and that could be a support for 
technical staff, studious or simple tourists. 
This work is interesting also because this place, during the XIX 
century, has been used as a barracks from the napoleonic army 
that has ransacked it and partially defaced: because of these 
events many decorations, particularly some capitals, has been 
removed. An interesting application of this survey will be the 
reconstruction of a comprehensive vision of the sacristy thanks 
to the introduction, in the virtual 3D model, the missed elements 
reconstructed on the base of those preserved. 
6. ACKNOWLEDGEMENTS 
Special thanks to firm 3Dveritas for its collaboration, in 
particular about the software support. 
A right thanks must be given to the director of the State 
archives in Mantova and to firm COPRAT for their competent 
willingness. 
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