Sponsor
This work has been supported by the NSF Medium ITR IIS-0205586.
Published In
Applied Optics
Document Type
Article
Publication Date
5-1-2007
Subjects
Image processing -- Digital techniques, Three-dimensional imaging, Photometry
Abstract
A 3D scanner, based on incoherent illumination techniques, and associated data-processing algorithms are presented that can be used to scan objects at lateral resolutions ranging from 5 to 100 m (or more) and depth resolutions of approximately 2 m. The scanner was designed with the specific intent to scan cuneiform tablets but can be utilized for other applications. Photometric stereo techniques are used to obtain both a surface normal map and a parameterized model of the object’s bidirectional reflectance distribution function. The normal map is combined with height information, gathered by structured light techniques, to form a consistent 3D surface. Data from Lambertian and specularly diffuse spherical objects are presented and used to quantify the accuracy of the techniques. Scans of a cuneiform tablet are also presented. All presented data are at a lateral resolution of 26.8 m as this is approximately the minimum resolution deemed necessary to accurately represent cuneiform.
DOI
10.1364/AO.46.002838
Persistent Identifier
http://archives.pdx.edu/ds/psu/7262
Citation Details
D. V. Hahn, K. C. Baldwin, D. D. Duncan, “Non-laser based scanner for 3D digitization of historical artifacts,” Applied Optics, V. 46, pp. 2838-2850 (2007)
Description
This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/viewmedia.cfm?URI=ao-46-15-2838&seq=0. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.