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Application of Ground-Penetrating Radar for Detecting Internal Anomalies in Tree Trunks with Irregular Contours

To assess the health conditions of tree trunks, it is necessary to estimate the layers and anomalies of their internal structure. The main objective of this paper is to investigate the internal part of tree trunks considering their irregular contour. In this respect, we used ground penetrating radar...

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Detalles Bibliográficos
Autores principales: Li, Weilin, Wen, Jian, Xiao, Zhongliang, Xu, Shengxia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5855040/
https://www.ncbi.nlm.nih.gov/pubmed/29470427
http://dx.doi.org/10.3390/s18020649
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author Li, Weilin
Wen, Jian
Xiao, Zhongliang
Xu, Shengxia
author_facet Li, Weilin
Wen, Jian
Xiao, Zhongliang
Xu, Shengxia
author_sort Li, Weilin
collection PubMed
description To assess the health conditions of tree trunks, it is necessary to estimate the layers and anomalies of their internal structure. The main objective of this paper is to investigate the internal part of tree trunks considering their irregular contour. In this respect, we used ground penetrating radar (GPR) for non-invasive detection of defects and deteriorations in living trees trunks. The Hilbert transform algorithm and the reflection amplitudes were used to estimate the relative dielectric constant. The point cloud data technique was applied as well to extract the irregular contours of trunks. The feasibility and accuracy of the methods were examined through numerical simulations, laboratory and field measurements. The results demonstrated that the applied methodology allowed for accurate characterizations of the internal inhomogeneity. Furthermore, the point cloud technique resolved the trunk well by providing high-precision coordinate information. This study also demonstrated that cross-section tomography provided images with high resolution and accuracy. These integrated techniques thus proved to be promising for observing tree trunks and other cylindrical objects. The applied approaches offer a great promise for future 3D reconstruction of tomographic images with radar wave.
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spelling pubmed-58550402018-03-20 Application of Ground-Penetrating Radar for Detecting Internal Anomalies in Tree Trunks with Irregular Contours Li, Weilin Wen, Jian Xiao, Zhongliang Xu, Shengxia Sensors (Basel) Article To assess the health conditions of tree trunks, it is necessary to estimate the layers and anomalies of their internal structure. The main objective of this paper is to investigate the internal part of tree trunks considering their irregular contour. In this respect, we used ground penetrating radar (GPR) for non-invasive detection of defects and deteriorations in living trees trunks. The Hilbert transform algorithm and the reflection amplitudes were used to estimate the relative dielectric constant. The point cloud data technique was applied as well to extract the irregular contours of trunks. The feasibility and accuracy of the methods were examined through numerical simulations, laboratory and field measurements. The results demonstrated that the applied methodology allowed for accurate characterizations of the internal inhomogeneity. Furthermore, the point cloud technique resolved the trunk well by providing high-precision coordinate information. This study also demonstrated that cross-section tomography provided images with high resolution and accuracy. These integrated techniques thus proved to be promising for observing tree trunks and other cylindrical objects. The applied approaches offer a great promise for future 3D reconstruction of tomographic images with radar wave. MDPI 2018-02-22 /pmc/articles/PMC5855040/ /pubmed/29470427 http://dx.doi.org/10.3390/s18020649 Text en © 2018 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
Li, Weilin
Wen, Jian
Xiao, Zhongliang
Xu, Shengxia
Application of Ground-Penetrating Radar for Detecting Internal Anomalies in Tree Trunks with Irregular Contours
title Application of Ground-Penetrating Radar for Detecting Internal Anomalies in Tree Trunks with Irregular Contours
title_full Application of Ground-Penetrating Radar for Detecting Internal Anomalies in Tree Trunks with Irregular Contours
title_fullStr Application of Ground-Penetrating Radar for Detecting Internal Anomalies in Tree Trunks with Irregular Contours
title_full_unstemmed Application of Ground-Penetrating Radar for Detecting Internal Anomalies in Tree Trunks with Irregular Contours
title_short Application of Ground-Penetrating Radar for Detecting Internal Anomalies in Tree Trunks with Irregular Contours
title_sort application of ground-penetrating radar for detecting internal anomalies in tree trunks with irregular contours
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5855040/
https://www.ncbi.nlm.nih.gov/pubmed/29470427
http://dx.doi.org/10.3390/s18020649
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