Abstract:
Retrospective photogrammetry is a novel approach to producing fully functional
three-dimensional models using archival photographs, plans and drawings
augmented with contemporary photogrammetry and surveying. This paper
addresses the advantages as well as the difficulties in using retrospective photogrammetry
and examines how the results can be put to use for further research,
preservation, restoration, monitoring rates of deterioration and presentation to
the public. We examine the approach to retrospective photogrammetry from
the perspective of both the photogrammetrist and the end user (ie. researcher,
scholar or authority responsible for using or disseminating the resulting data).
From the perspective of the photogrammetrist it is the nature and quality of
the archival data that is of concern. Does the archival material meet the needs
of 3D modeling and will the resulting models meet the needs of the end user?
The end user is concerned with being able to store, access and utilize the results
constructively. An impressive 3D model without detail or metrics is of little use
apart from public presentation. We explain why the end user’s goals must be
addressed clearly prior to commencing the project.
We will look at examples from the Athenian Agora and Ancient Corinth to illustrate
the methods required, limitations experienced and opportunities made
possible with the resulting products