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Published Articles >> Table of Contents >> Abstract
Fifth International Conference on 3-D Digital Imaging and Modeling (3DIM'05)
pp. 81-88
Digitizing Archaeological Excavations from Multiple Views
Xenophon Zabulis, Informatics and Telematics Institute Thessaloniki
Alexander Patterson, University of Pennsylvania
Kostas Daniilidis, University of Pennsylvania
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DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/3DIM.2005.32
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| Abstract |
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We present a novel approach on digitizing large scale unstructured
environments like archaeological excavations using
off-the-shelf digital still cameras. The cameras are calibrated
with respect to few markers captured by a theodolite
system. Having all cameras registered in the same coordinate
system enables a volumetric approach. Our new
algorithm has as input multiple calibrated images and outputs
an occupancy voxel space where occupied pixels have
a local orientation and a confidence value. Both, orientation
and confidence facilitate an efficient rendering and texture
mapping of the resulting point cloud. Our algorithm
combines the following new features: Images are back-projected
to hypothesized local patches in the world and
correlated on these patches yielding the best orientation.
Adjacent cameras build tuples which yield a product of pairwise
correlations, called strength. Multiple camera tuples
compete each other for the best strength for each voxel. A
voxel is regarded as occupied if strength is maximum along
the normal. Unlike other multi-camera algorithms using silhouettes,
photoconsistency, or global correspondence, our
algorithm makes no assumption on camera locations being
outside the convex hull of the scene. We present compelling
results of outdoors excavation areas.
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 Additional Information
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Citation:
Xenophon Zabulis, Alexander Patterson, Kostas Daniilidis,
"Digitizing Archaeological Excavations from Multiple Views,"
3dim,
pp. 81-88,
Fifth International Conference on 3-D Digital Imaging and Modeling (3DIM'05),
2005
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