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ST.MARCUS' BASILICA IN VENICE: ANALYSIS OF DIGITAL IMAGES  PROJECTION 
BRUMANA R., VASSENA G. 
Politecnico di Milano 
Dip. I.I.A.R. Sezione Rilevamento 
Piazza Leonardo da Vinci 32 
20133 Milano - Italy 
COMMISSION V 
ABSTRACT 
This research is part of a wider study involving different interlocutors and 
disciplines for the project of the conservation of St.Marcus' Basilica (Brumana, 
Galeazzo, Monti, Vio, 1989). 
Particularly this contribution is a part of a larger program of computerization 
that begun with the project of surveies of the Basilica (Galeazzo,1988). 
In its latest phase the research has studied the possibility and has evaluated the 
potential of the image projection technique. Thus the present test is an illustra- 
tive tive work focusing on the study of the Basilica's domes. 
First it has been tested the chance to proiect the images of the mosaical domes on 
the digital terrain in a threedimensional space. 
The research presents a theorical contribution about the relationship between the 
survey process and the conservation one, in their most advanced teorical and 
scientific acquisition (Matteini, Moles,1984). 
This study is only at its start and for this reason this paper faces the acpects 
and the problems of the analytical statement and those ones belonging to the 
purposes that, it must be said, are not of strictly metric-numerical nature. 
Infact they are related with the possibilities and needs of control and analysis 
of the image that, through an informatic support, becomes an operative object. 
Among the different purposes of this research there is measurableness, the 
resolution and the possibility of superimposing different acquisition. 
This paper is tightly connected with the paper presented at this Congress by 
R.Brumana and G.Galeazzo with the title "St.Marcus' Basilica in Venice. An apply of 
image projection on a dome.", because they belonge to the same research. 
Key words: Algorithm, Analytical, Architectural, Close-range, Image Processing. 
  
FIG.1 - THE  ASCENSIONE'S DOME. DIGITAL IMAGE OF 
PHOTOGRAMMETRIC TAKENS. HERE IT IS SHOWN AN ACQUISITION WITH 
SCANNER OF THE DOME OF THE ST. MARCUS’ BASILICA. 
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