CIPA 2003 XIX th International Symposium, 30 September - 04 October, 2003, Antalya, Turkey 
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These techniques were used for the architectural survey of 
standing structures at Ile de la Passe, Mauritius. The fieldwork 
for this research was conducted by Geoffrey and Françoise 
Summers in January 2002. Post-fieldwork processing was done 
at METU with the help of postgraduate students. The islet 
guards the entrance through the coral reef into Grand Port and 
played a critical part in the last Napoleonic naval victory 
against the British. Standing monuments include defences and 
military structures built during the eighteenth century French 
colonial period and the following British occupation from 1810 
to World War II. The archaeological and architectural survey 
was initiated by the Mauritius National Heritage Trust to 
document remains and standing structures and permit the 
implementation of appropriate approaches to cultural heritage 
issues, including preservation and conservation. A proper 
understanding of what survives is essential before a programme 
of cultural assets enhancement for presentation to contemporary 
and future generations of Mauritians and tourists can be 
proposed. 
With very limited time and resources in the field, full 
documentation of all structures was successfully completed. All 
standing buildings were photographed and basic measurements 
taken. Width, length, heights and a sufficient number of control 
points, either distinctive features or chalk-marked crosses, were 
measured. One example illustrated here (Fig. 6) is the rear 
elevation of the Central Building clearly built in two phases. 
Simple sketches to record key measurements were drawn in the 
field and the AutoCAD ortho drawings produced in the office 
during the post fieldwork study. The digital photos were 
rectified and aligned in AutoCAD to the selected control points, 
details were then digitised onto the elevation drawing and it was 
further possible to produce a stone for stone inked drawing 
from a scaled printout (Fig. 6). 
Two more examples, from lie de la Passe, illustrate the 
documentation of structures. The hot shot furnace (Fig. 7), built 
during the French occupation period, was presented as 
elevations with aligned photos giving the desired detailed 
information without the necessity for the time consuming 
production of a stone for stone drawing. Finally the photo 
realistic 3D model of the small stepped structure (Fig. 8) 
demonstrates the use of PhotoModeler to match photos to their 
respective surface on a 3D model drawn in AutoCAD with 
given measurements. 
FRONT ELEVATION WITH PHOTO NE ELEVATION WITH PHOTO 
REAR ELEVATION WITH PHOTO 
SW ELEVATION WITH PHOTO 
HOT SHOT FURNACE 
Figure 7. Rectified photo and elevation drawings of the hot shot furnace on He de la Passe, Mauritius. 
Figure 8. The small stepped structure, probably a Hag pole emplacement, on He de la Passe, Mauritius, was reproduced as a 3D 
model in PhotoModeler by Qagatay Karipta?. The cropped portion of photograph used for each Hat plane was matched to the 
corresponding surface of the model.