images produced with the results from the different adjustments.
Nevertheless, surface description is also an important informa-
tion in itself, indispensable for the documentation of the site or
the monument. In this sense, approaches for improving absolute
orientation are useful.
Figure 8. 4g. Marina: Distribution of AZ errors from
planimetric adjustment (left) and using weighted model
elevations (right); spacing: 5 cm; dark line: AZ = 0.
5. CONCLUDING REMARKS
This contribution has dealt with aspects of archaeological ortho-
imaging. Issues related to phototriangulation have been briefly
discussed, mainly as regards the implications of employing non-
metric cameras on unstable platforms (see also Karras & Mavro-
mati, 2001). Further, the question of object modeling in the case
of the ‘broken’ surfaces so often encountered in archaeological
surveys has been addressed, and the authors’ experiences in this
field have been reported and illustrated with examples. Also, the
possibility of using the numerous existing plots and maps as 2D
control information has been discussed and evaluated. Being the
standard requirement in today’s archaeological documentation,
the production of orthoimages still poses questions concerning
the intersection of simplicity and cost-efficiency with geometric
accuracy and high visual quality.
Acknowledgements
The authors wish to thank the Department of Restoration of An-
cient Monuments of the Greek Ministry of Culture and the Bri-
tish Archaeological School in Athens for their kind permission
to present this material.
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