Reconstruction of 3D models from microtomographic images of archeological artifacts
Enej Gucek Puhar, Lidija Korat, Miran Eric, Aleš Jaklic, Franc Solina
Abstract:
The article describes an example of using an iterative algorithm to reconstruction 3D models from two-dimensional (2D) microtomographic (μCT) computer images of archaeological artifacts. The object of the tomographic reconstruction was a 40,000- year-old Paleolithic hunting weapon found in the Ljubljanica River near Sinja Gorica (Slovenia). Between 2013 and 2017, the point was conserved using a traditional waterlogged wood processing technique with melamine resin. Using computer volumetric analysis of five surface 3D models, taken before, during and after the conservation, it was found out that volumetric changes and deviations of the point have occurred. The point bent visibly. Surface changes on 3D models did not answer the question: in what condition is the point after the conservation procedure nor the causes of the established deviation. Therefore, we developed an iterative algorithm (IR) with which we rendered a volumetric 3D model from 2D microtomographic images. With the volumetric 3D model, we were able to supplement the information of the surface 3D model and volumetrically and graphically confirm the actual and critical state of the internal structure of the artifact. Reconstruction of 3D models from 2D microtomographic images and results obtained from volumetric 3D model highlighted the importance of computed tomography as a non-invasive imaging technique in archaeological treatment, and especially in the planning and implementation of procedures for conservation, restoration and storage of valuable objects of archaeological cultural heritage.
Download:
IMEKO-TC4-MetroArchaeo2020-070.pdf
DOI:
-
Event details
IMEKO TC:
TC4
Event name:
TC4 MetroArchaeo 2020 (ONLINE)
Title:

IMEKO TC4 International Conference on Metrology for Archaeology and Cultural Heritage

Place:
Trento, ITALY
Time:
22 October 2020 - 24 October 2020
 Back