FROM DIGITAL PHOTOGRAMMETRY TO 3D DIGITALIZATION FOR ART OBJECTS
MEASUREMENT
O. Feihl*, Archaeologist, Archidata Group
E. Renaudin**, Geomatic Engineer, Archidata Group
Chemin des Croisettes, 23 - 1066 Epalinges, Switzerland
* Info(a'archidata-sa.com
** e.renaudi-n@archeodumim.ch
KEYWORDS : Close-range, 3D laser scanning, cultural heritage, digital photogrammetry
ABSTRACT:
The method presented in this paper try to answer a new question raised by archaeologist and historians: is it possible to
compare precisely some cultural heritage object with flexible data acquisition, better accuracy and ease the integration
of the computed object? Starting with digital photgrammetry and now thanks to laser scanning techniques, we did
develop and validate a solution concept for object virtual reconstruction. Within a European project frame, a digitisation
of two gold quiver was realised to establish a comparison procedure for resolving ambiguities around their build
process.
1. INTRODUCTION
In the context of medieval mountings restorations of
Sion’s cathedral and Saint-Maurice Abbey treasures in
Switzerland, started at the beginning of year 1990, our
group was solicited to draw up the three-dimensional
surveys of these objects. Measures were then realized
with digital photogrammetry for digital surface model
restitution and orthophotos construction.
Unfortunately this process was limited by the great
infrastructure and time investment for granting results
up to help archaeologist in their interpretation task.
New way of proceedings were hardly needed.
Fig. 1: Geometrical model and orthophoto of the St
Maurice “Châsse” acquired by softcopy
photogrammetry
A solution was found within the framework of a
collaboration with the Restoration Research Centre of
French Museums. The task placed under the jointly
European research project “SCULPTOR”, was to
elaborate and evaluate methods for conservation and
possible data interpretation of known historical objects.
With an aim of helping art historians to determine the
manufacturing processes of the three unique gorythes
(gold quiver) known in the world. Rostov and Kiev
quiver test objects were then digitised to experiment
new possibilities. The third one, preserved in
Thessalonique, will be measured later on.
With the arrival on the market, at the end of the years
1990, of three dimensions laser scanners, restitution
and acquisition parameters radically changed; it is now
possible to quickly draw up a complete and very
precise three-dimensional cartography of art objects
and carved architectural elements.
The performance and results of three dimensional
reconstruction of the quivers, thanks to high resolution
laser scanning, are commented in this paper to put in
relief the potential offered by such systems. The main
purposes is to illustrate the powerful possibilities
offered by these new technologies for culture heritage
inventory and studies.
In this paper we presents on one hand a technique, and
on the other hand the possible comparison of two
Gorythes with the help of derived 3d digital model,
comparison which was not possible before with the
available techniques.
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