CIPA 2003 XIX th International Symposium, 30 September - 04 October, 2003, Antalya, Turkey 
251 
0 5 10 15 BO neter 
Figure 9. Ground plan of transept and chancel showing the 
availability of orthophotoplan 
Figure 10. Left photograph of one stereopair that would be used 
to orthorectify four different modules. 
The general conclusion about the methodology is that it is 
possible to generate orthophotos form tilted stereopairs, within 
certain limits. The use of artificial GCP facilitates the stage of 
absolute orientation and diminishes the chance of errors at this 
stage. 
The availability of non-expensive digital photogrammetric tools 
such as VirtuoZo allow to set up a methodology and attain a 
certain level of operationability, regardless the ever changing 
circumstances in close-range photogrammetry. 
5. REFERENCES 
Ackermann F., (1996), Techniques and Strategies for DEM 
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Society for Photogrammetry and Remote Sensing, Bethesda 
Maryland, p. 135 - 141 
Bethel J. S., McGlone J. Ch„ Mikhail E. M„ (2001), 
Introduction to ModernPhotogrammetry, John Wiley & Sons 
Inc., New York, 477 p. 
Greve C. (ed.), (1996), Digital Photogrammetry, An Addendum 
to the Manual ofPhotogrammetry, American Society for 
Photogrammetry and Remote Sensing, BethesdaMaryland, 247 
P- 
Laurent G., (1998), Site de l’ancienne abbaye d’Aulne (Gozée), 
le quartier des hôtes :analyse historique et archéologique des 
vestiges conservés en élévation, unpublished thesis, Katholieke 
Universiteit Leuven, Faculteit Toegepaste Wetenschappen, R. 
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buildings 
Manzer G., (1996), Avoiding Digital Orthophoto Problems In : 
Greve C. (ed.), Digital Photogrammetry, An Addendum to the 
Manual of Photogrammetry, American Society for 
Photogrammetry and Remote Sensing, Bethesda Maryland, p. 
158- 162 
Schenk A. F., (1996), Automatic Generation of DEM’s In : 
Greve C. (ed.), Digital Photogrammetry, An Addendum to the 
Manual of Photogrammetry, American Society for 
Photogrammetry and Remote Sensing, Bethesda Maryland, p. 
145-150 
Slama Ch. C., Henriksen S. W., Theurer C. (eds.), (1980), 
Manual of Photogrammetry, Fourth Edition, Falls Church, 
1056 p. 
Albertz J., Wiedemann A., (s.d.), From Analogue to Digital 
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berlin.de/~albert/Iit/lstCR.pdf (accessed on 16/04/2001)