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especially, in pronaos where cracks and da- 
mages are spreading everywhere. 
Mural painting and picture survey allows 
the painter to remove these damages having 
appeared as a result of water washing after 
the dome fell down during 1977 and 1986 
earthquakes. 
This special survey has established the 
measuring procedure and the working pro- 
gramme. 
MEASURING PROGRAMME 
A unique X,Y,Z reference plane establishing 
a network of points transferred inward the 
church and all around it has been envisaged 
to make survey. 
It is used to implement control points 
(Figure 1) on inner and outer walls, at 
various levels and established in the basic 
reference coordinate system. 
SUR 
  
  
  
  
sured on metric and non-metric individual 
photographs for pilasters and zones diffi- 
cult of access; they are processed by pho- 
torectifying procedures; arches and vaults 
in an expanding projection are made by com- 
puter-assisted processing of the digital 
data captured for curved surfaces. 
Stereo pair of photographs, as well as, me- 
tric individual photographs are processed 
using Carl Zeiss-Jena UMK-10/1318 equipment 
on ORWO photographic plates, while non-me- 
tric individual photographs are processed 
using a 24 x 36 mm photographic apparatus. 
MEASUREMENTS 
Stereo pairs of photographs for architectu- 
ral survey have been taken by photogramme- 
tric bases located outside the church and 
covering details on architectonic features, 
cracks and building features. Inside,there 
have been used various technical solutions 
considering building state-of-art and da- 
mage measurements. 
  
VEST 
  
  
  
  
  
  
  
NORD 
  
  
  
  
  
  
Figure 1. Plan Showing Network Points and Photographing Data 
Key 
y 
The architectonic survey is to be both 
measured on stereo pair of photographs ana- 
logically, using a Carl Zeiss-Jena Techno- 
cart plotter and digitized computer-pro- 
cessed images, employing a DZT plotter to 
draw them. 
Mural painting surveys are generally mea- 
Normal base 
! / Bases withw = 90° 
Separate photographs 
Vertical bases 
Polygon point 
403 
Metric individual photographs have been 
taken by stations at a 3 m. height located 
on axes parallel to the walls. Vaults, to- 
wers, arches and apses have been registered 
on stereo pair of photographs, having their 
photographing axes either normal or verti- 
cal, as when the apses in the altar have 
been taken.