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Featured Publication:
"Reflection Transformation Imaging and
Virtual Representations
of Coins from the
Hospice of the Grand St. Bernard"
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Authors : Mark Mudge+, Jean-Pierre Voutaz*, Carla Schroer+ Marlin Lum+
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+Cultural Heritage Imaging, San Francisco, California USA
* Congregation of the Grand St. Bernard, Switzerland
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Presented at: VAST 2005
The 7th International Symposium on Virtual Reality,
Archaeology and Cultural Heritage
VAST 2005 Editors: M. Mudge, N.Ryan, R. Scopigno
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Julian Star with Specular Enhancement |
Abstract
Reflection transformation imaging offers a powerful new method of documenting and communicating numismatic
cultural heritage information. The challenges of documenting numismatic material will be examined along with the
limitations of traditional documentary techniques. Previous uses of structured light scanning and PTMs in
numismatic documentation are reviewed and evaluated. A novel, low cost method for capturing PTMs at remote
locations and subsequent data processing operations is described. Reflection transformation imaging is shown to
capture more complete documentation than traditional photographic methods and communicate this information
with ease through digital media. The advantages of interactive relighting of numismatic PTM images in conjunction
with enhancement operations are explored along with the potential of informed choice of the most information rich
illumination directions. Advantages of joint capture of structured light and PTMs are examined including the
inherent registration of range and normal data, using range and normal information together to improve 3D
position accuracy, and the enhanced evidentiary reliability that results.
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Downloads:
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