Estimation of structural attributes of walnut trees based on terrestrial laser scanning
Juglans regia L. (walnut) is a tree of significant economic importance, usually cultivated for its seed used in the food market, and for its wood used in the furniture industry. The aim of this work was to develop regression models to predict crown parameters for walnut trees using a terrestrial las...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Universitat Politècnica de València
2017-06-01
|
| Series: | Revista de Teledetección |
| Subjects: | |
| Online Access: | https://polipapers.upv.es/index.php/raet/article/view/7429 |
| _version_ | 1826907942306185216 |
|---|---|
| author | J. Estornell A. Velázquez-Martí A. Fernández-Sarría I. López-Cortés J. Martí-Gavilá D. Salazar |
| author_facet | J. Estornell A. Velázquez-Martí A. Fernández-Sarría I. López-Cortés J. Martí-Gavilá D. Salazar |
| author_sort | J. Estornell |
| collection | DOAJ |
| description | Juglans regia L. (walnut) is a tree of significant economic importance, usually cultivated for its seed used in the food market, and for its wood used in the furniture industry. The aim of this work was to develop regression models to predict crown parameters for walnut trees using a terrestrial laser scanner. A set of 30 trees was selected and the total height, crown height and crown diameter were measured in the field. The trees were also measured by a laser scanner and algorithms were applied to compute the crown volume, crown diameter, total and crown height. Linear regression models were calculated to estimate walnut tree parameters from TLS data. Good results were obtained with values of R2 between 0.90 and 0.98. In addition, to analyze whether coarser point cloud densities might affect the results, the point clouds for all trees were subsampled using different point densities: points every 0.005 m, 0.01 m, 0.05 m, 0.1 m, 0.25 m, 0.5 m, 1 m, and 2 m. New regression models were calculated to estimate field parameters. For total height and crown volume good estimations were obtained from TLS parameters derived for all subsampled point cloud (0.005 m – 2 m). |
| first_indexed | 2024-12-12T16:53:37Z |
| format | Article |
| id | doaj.art-4f07e6c0e3f8432facc5f590b1f6e8f3 |
| institution | Directory Open Access Journal |
| issn | 1133-0953 1988-8740 |
| language | English |
| last_indexed | 2025-02-17T09:15:38Z |
| publishDate | 2017-06-01 |
| publisher | Universitat Politècnica de València |
| record_format | Article |
| series | Revista de Teledetección |
| spelling | doaj.art-4f07e6c0e3f8432facc5f590b1f6e8f32025-01-02T14:20:44ZengUniversitat Politècnica de ValènciaRevista de Teledetección1133-09531988-87402017-06-01048677610.4995/raet.2017.74295362Estimation of structural attributes of walnut trees based on terrestrial laser scanningJ. Estornell0A. Velázquez-Martí1A. Fernández-Sarría2I. López-Cortés3J. Martí-Gavilá4D. Salazar5Universitat Politècnica de ValènciaUniversitat Politècnica de ValènciaUniversitat Politècnica de ValènciaUniversitat Politècnica de ValènciaUniversitat Politècnica de ValènciaUniversitat Politècnica de ValènciaJuglans regia L. (walnut) is a tree of significant economic importance, usually cultivated for its seed used in the food market, and for its wood used in the furniture industry. The aim of this work was to develop regression models to predict crown parameters for walnut trees using a terrestrial laser scanner. A set of 30 trees was selected and the total height, crown height and crown diameter were measured in the field. The trees were also measured by a laser scanner and algorithms were applied to compute the crown volume, crown diameter, total and crown height. Linear regression models were calculated to estimate walnut tree parameters from TLS data. Good results were obtained with values of R2 between 0.90 and 0.98. In addition, to analyze whether coarser point cloud densities might affect the results, the point clouds for all trees were subsampled using different point densities: points every 0.005 m, 0.01 m, 0.05 m, 0.1 m, 0.25 m, 0.5 m, 1 m, and 2 m. New regression models were calculated to estimate field parameters. For total height and crown volume good estimations were obtained from TLS parameters derived for all subsampled point cloud (0.005 m – 2 m).https://polipapers.upv.es/index.php/raet/article/view/7429dendrometríanogalláser escánerconvex hullagricultura de precisión |
| spellingShingle | J. Estornell A. Velázquez-Martí A. Fernández-Sarría I. López-Cortés J. Martí-Gavilá D. Salazar Estimation of structural attributes of walnut trees based on terrestrial laser scanning Revista de Teledetección dendrometría nogal láser escáner convex hull agricultura de precisión |
| title | Estimation of structural attributes of walnut trees based on terrestrial laser scanning |
| title_full | Estimation of structural attributes of walnut trees based on terrestrial laser scanning |
| title_fullStr | Estimation of structural attributes of walnut trees based on terrestrial laser scanning |
| title_full_unstemmed | Estimation of structural attributes of walnut trees based on terrestrial laser scanning |
| title_short | Estimation of structural attributes of walnut trees based on terrestrial laser scanning |
| title_sort | estimation of structural attributes of walnut trees based on terrestrial laser scanning |
| topic | dendrometría nogal láser escáner convex hull agricultura de precisión |
| url | https://polipapers.upv.es/index.php/raet/article/view/7429 |
| work_keys_str_mv | AT jestornell estimationofstructuralattributesofwalnuttreesbasedonterrestriallaserscanning AT avelazquezmarti estimationofstructuralattributesofwalnuttreesbasedonterrestriallaserscanning AT afernandezsarria estimationofstructuralattributesofwalnuttreesbasedonterrestriallaserscanning AT ilopezcortes estimationofstructuralattributesofwalnuttreesbasedonterrestriallaserscanning AT jmartigavila estimationofstructuralattributesofwalnuttreesbasedonterrestriallaserscanning AT dsalazar estimationofstructuralattributesofwalnuttreesbasedonterrestriallaserscanning |