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Microtomographic Analysis of a Palaeolithic Wooden Point from the Ljubljanica River †

A rare and valuable Palaeolithic wooden point, presumably belonging to a hunting weapon, was found in the Ljubljanica River in Slovenia in 2008. In order to prevent complete decay, the waterlogged wooden artefact had to undergo conservation treatment, which usually involves some expected deformation...

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Detalles Bibliográficos
Autores principales: Puhar, Enej Guček, Korat, Lidija, Erič, Miran, Jaklič, Aleš, Solina, Franc
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8951160/
https://www.ncbi.nlm.nih.gov/pubmed/35336540
http://dx.doi.org/10.3390/s22062369
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author Puhar, Enej Guček
Korat, Lidija
Erič, Miran
Jaklič, Aleš
Solina, Franc
author_facet Puhar, Enej Guček
Korat, Lidija
Erič, Miran
Jaklič, Aleš
Solina, Franc
author_sort Puhar, Enej Guček
collection PubMed
description A rare and valuable Palaeolithic wooden point, presumably belonging to a hunting weapon, was found in the Ljubljanica River in Slovenia in 2008. In order to prevent complete decay, the waterlogged wooden artefact had to undergo conservation treatment, which usually involves some expected deformations of structure and shape. To investigate these changes, a series of surface-based 3D models of the artefact were created before, during and after the conservation process. Unfortunately, the surface-based 3D models were not sufficient to understand the internal processes inside the wooden artefact (cracks, cavities, fractures). Since some of the surface-based 3D models were taken with a microtomographic scanner, we decided to create a volumetric 3D model from the available 2D tomographic images. In order to have complete control and greater flexibility in creating the volumetric 3D model than is the case with commercial software, we decided to implement our own algorithm. In fact, two algorithms were implemented for the construction of surface-based 3D models and for the construction of volumetric 3D models, using (1) unsegmented 2D images CT and (2) segmented 2D images CT. The results were positive in comparison with commercial software and new information was obtained about the actual state and causes of the deformation of the artefact. Such models could be a valuable aid in the selection of appropriate conservation and restoration methods and techniques in cultural heritage research.
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spelling pubmed-89511602022-03-26 Microtomographic Analysis of a Palaeolithic Wooden Point from the Ljubljanica River † Puhar, Enej Guček Korat, Lidija Erič, Miran Jaklič, Aleš Solina, Franc Sensors (Basel) Article A rare and valuable Palaeolithic wooden point, presumably belonging to a hunting weapon, was found in the Ljubljanica River in Slovenia in 2008. In order to prevent complete decay, the waterlogged wooden artefact had to undergo conservation treatment, which usually involves some expected deformations of structure and shape. To investigate these changes, a series of surface-based 3D models of the artefact were created before, during and after the conservation process. Unfortunately, the surface-based 3D models were not sufficient to understand the internal processes inside the wooden artefact (cracks, cavities, fractures). Since some of the surface-based 3D models were taken with a microtomographic scanner, we decided to create a volumetric 3D model from the available 2D tomographic images. In order to have complete control and greater flexibility in creating the volumetric 3D model than is the case with commercial software, we decided to implement our own algorithm. In fact, two algorithms were implemented for the construction of surface-based 3D models and for the construction of volumetric 3D models, using (1) unsegmented 2D images CT and (2) segmented 2D images CT. The results were positive in comparison with commercial software and new information was obtained about the actual state and causes of the deformation of the artefact. Such models could be a valuable aid in the selection of appropriate conservation and restoration methods and techniques in cultural heritage research. MDPI 2022-03-18 /pmc/articles/PMC8951160/ /pubmed/35336540 http://dx.doi.org/10.3390/s22062369 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Puhar, Enej Guček
Korat, Lidija
Erič, Miran
Jaklič, Aleš
Solina, Franc
Microtomographic Analysis of a Palaeolithic Wooden Point from the Ljubljanica River †
title Microtomographic Analysis of a Palaeolithic Wooden Point from the Ljubljanica River †
title_full Microtomographic Analysis of a Palaeolithic Wooden Point from the Ljubljanica River †
title_fullStr Microtomographic Analysis of a Palaeolithic Wooden Point from the Ljubljanica River †
title_full_unstemmed Microtomographic Analysis of a Palaeolithic Wooden Point from the Ljubljanica River †
title_short Microtomographic Analysis of a Palaeolithic Wooden Point from the Ljubljanica River †
title_sort microtomographic analysis of a palaeolithic wooden point from the ljubljanica river †
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8951160/
https://www.ncbi.nlm.nih.gov/pubmed/35336540
http://dx.doi.org/10.3390/s22062369
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