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Suitability of Automatic Photogrammetric Reconstruction Configurations for Small Archaeological Remains

Three-dimensional (3D) reconstruction is a useful technique for the documentation, characterization, and evaluation of small archeological objects. In this research, a comparison among different photogrammetric setups that use different lenses (macro and standard zoom) and dense point cloud generati...

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Autores principales: Rodríguez-Martín, Manuel, Rodríguez-Gonzálvez, Pablo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7287877/
https://www.ncbi.nlm.nih.gov/pubmed/32455883
http://dx.doi.org/10.3390/s20102936
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author Rodríguez-Martín, Manuel
Rodríguez-Gonzálvez, Pablo
author_facet Rodríguez-Martín, Manuel
Rodríguez-Gonzálvez, Pablo
author_sort Rodríguez-Martín, Manuel
collection PubMed
description Three-dimensional (3D) reconstruction is a useful technique for the documentation, characterization, and evaluation of small archeological objects. In this research, a comparison among different photogrammetric setups that use different lenses (macro and standard zoom) and dense point cloud generation calibration processes for real specific objects of archaeological interest with different textures, geometries, and materials is raised using an automated data collection. The data acquisition protocol is carried out from a platform with control points referenced with a metrology absolute arm to accurately define a common spatial reference system. The photogrammetric reconstruction is performed considering a camera pre-calibration as well as a self-calibration. The latter is common for most data acquisition situations in archaeology. The results for the different lenses and calibration processes are compared based on a robust statistical analysis, which entails the estimation of both standard Gaussian and non-parametric estimators, to assess the accuracy potential of different configurations. As a result, 95% of the reconstructed points show geometric discrepancies lower than 0.85 mm for the most unfavorable case and less than 0.35 mm for the other cases.
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spelling pubmed-72878772020-06-15 Suitability of Automatic Photogrammetric Reconstruction Configurations for Small Archaeological Remains Rodríguez-Martín, Manuel Rodríguez-Gonzálvez, Pablo Sensors (Basel) Article Three-dimensional (3D) reconstruction is a useful technique for the documentation, characterization, and evaluation of small archeological objects. In this research, a comparison among different photogrammetric setups that use different lenses (macro and standard zoom) and dense point cloud generation calibration processes for real specific objects of archaeological interest with different textures, geometries, and materials is raised using an automated data collection. The data acquisition protocol is carried out from a platform with control points referenced with a metrology absolute arm to accurately define a common spatial reference system. The photogrammetric reconstruction is performed considering a camera pre-calibration as well as a self-calibration. The latter is common for most data acquisition situations in archaeology. The results for the different lenses and calibration processes are compared based on a robust statistical analysis, which entails the estimation of both standard Gaussian and non-parametric estimators, to assess the accuracy potential of different configurations. As a result, 95% of the reconstructed points show geometric discrepancies lower than 0.85 mm for the most unfavorable case and less than 0.35 mm for the other cases. MDPI 2020-05-22 /pmc/articles/PMC7287877/ /pubmed/32455883 http://dx.doi.org/10.3390/s20102936 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Rodríguez-Martín, Manuel
Rodríguez-Gonzálvez, Pablo
Suitability of Automatic Photogrammetric Reconstruction Configurations for Small Archaeological Remains
title Suitability of Automatic Photogrammetric Reconstruction Configurations for Small Archaeological Remains
title_full Suitability of Automatic Photogrammetric Reconstruction Configurations for Small Archaeological Remains
title_fullStr Suitability of Automatic Photogrammetric Reconstruction Configurations for Small Archaeological Remains
title_full_unstemmed Suitability of Automatic Photogrammetric Reconstruction Configurations for Small Archaeological Remains
title_short Suitability of Automatic Photogrammetric Reconstruction Configurations for Small Archaeological Remains
title_sort suitability of automatic photogrammetric reconstruction configurations for small archaeological remains
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7287877/
https://www.ncbi.nlm.nih.gov/pubmed/32455883
http://dx.doi.org/10.3390/s20102936
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