Affiliations: School of Mechanical Engineering and Automation,
Beijing Univ. of Aeronautics and Astronautics, Beijing, China | Department of Scientific History and Archaeometry,
Graduate University of Chinese Academy of Sciences, Beijing, China
Note: [] Corresponding author: Min Yang, School of Mechanical Engineering
and Automation, Beijing Univ. of Aeronautics and Astronautics, Xueyuan Rd. 37,
100191, Beijing, China. Tel.: +86 10 82339481; Mobile: +86 136 7119 2469; Fax:
+86 10 82339481; E-mail: minyang.ndt@263.net
Abstract: Drilling is one of the most complex techniques for making ancient
stone or jade implement or adornment. However, related research on ancient
stone or jade drilling technology lags behind, for there are rare records or
discovery of the ancient drilling tools. Drilling marks are very useful
information for analysis and research of the ancient drilling techniques. The
traditional information acquisition methods are very difficult to apply
effectively on smaller perforations. In this paper, we introduced a new
nondestructive method to solve the observation difficulty problem. The ancient
bead was scanned by 3D-μCT system. Then through T-FDK
algorithm, improved NL-means denoising algorithm and high accurate calibration,
the 3D geometrical information of micro-drilling marks on outer and inner wall
of the perforation were reconstructed. The experimental results proved that
this method can provide key information for the analysis of the ancient stone
drilling technique and ancient jade authentication.
Keywords: Ancient drilling technique, three dimensional micro-computed tomography, image denoising, T-FDK algorithm
