Individual tree measurement in tropical environment using terrestrial laser scanning
Detailed forest inventory and mensuration of individual trees have drawn attention of research society mainly to support sustainable forest management. This study aims at estimating individual tree attributes from high density point cloud obtained by terrestrial laser scanner (TLS). The point clouds...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Penerbit UTM Press
2015
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| Online Access: | http://eprints.utm.my/55835/1/ZulkepliMajid2015_IndividualTreeMeasurementinTropicalEnvironment.pdf |
| _version_ | 1796860231391641600 |
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| author | Abdul Rahman, Muhammad Zulkarnain Majid, Zulkepli Abu Bakar, Md. Afif Rasib, Abd. Wahid Wan Kadir, Wan Hazli |
| author_facet | Abdul Rahman, Muhammad Zulkarnain Majid, Zulkepli Abu Bakar, Md. Afif Rasib, Abd. Wahid Wan Kadir, Wan Hazli |
| author_sort | Abdul Rahman, Muhammad Zulkarnain |
| collection | ePrints |
| description | Detailed forest inventory and mensuration of individual trees have drawn attention of research society mainly to support sustainable forest management. This study aims at estimating individual tree attributes from high density point cloud obtained by terrestrial laser scanner (TLS). The point clouds were obtained over single reference tree and group of trees in forest area. The reference tree is treated as benchmark since detailed measurements of branch diameter were made on selected branches with different sizes and locations. Diameter at breast height (DBH) was measured for trees in forest. Furthermore tree height, height to crown base, crown volume and tree branch volume were also estimated for each tree. Branch diameter is estimated directly from the point clouds based on semi-automatic approach of model fitting i.e. sphere, ellipse and cylinder. Tree branch volume is estimated based on the volume of the fitted models. Tree height and height to crown base are computed using histogram analysis of the point clouds elevation. Tree crown volume is estimated by fitting a convex-hull on the tree crown. The results show that the Root Mean Squared Error (RMSE) of the estimated tree branch diameter does not have a specific trend with branch sizes and number of points used for fitting process. This explains complicated distribution of point clouds over the branches. Overall cylinder model produces good results with most branch sizes and number of point clouds for fitting. The cylinder fitting approach shows significantly better estimation results compared to sphere and ellipse fitting models. |
| first_indexed | 2024-03-05T19:38:51Z |
| format | Article |
| id | utm.eprints-55835 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T19:38:51Z |
| publishDate | 2015 |
| publisher | Penerbit UTM Press |
| record_format | dspace |
| spelling | utm.eprints-558352017-11-01T04:16:53Z http://eprints.utm.my/55835/ Individual tree measurement in tropical environment using terrestrial laser scanning Abdul Rahman, Muhammad Zulkarnain Majid, Zulkepli Abu Bakar, Md. Afif Rasib, Abd. Wahid Wan Kadir, Wan Hazli G70.212-70.215 Geographic information system Detailed forest inventory and mensuration of individual trees have drawn attention of research society mainly to support sustainable forest management. This study aims at estimating individual tree attributes from high density point cloud obtained by terrestrial laser scanner (TLS). The point clouds were obtained over single reference tree and group of trees in forest area. The reference tree is treated as benchmark since detailed measurements of branch diameter were made on selected branches with different sizes and locations. Diameter at breast height (DBH) was measured for trees in forest. Furthermore tree height, height to crown base, crown volume and tree branch volume were also estimated for each tree. Branch diameter is estimated directly from the point clouds based on semi-automatic approach of model fitting i.e. sphere, ellipse and cylinder. Tree branch volume is estimated based on the volume of the fitted models. Tree height and height to crown base are computed using histogram analysis of the point clouds elevation. Tree crown volume is estimated by fitting a convex-hull on the tree crown. The results show that the Root Mean Squared Error (RMSE) of the estimated tree branch diameter does not have a specific trend with branch sizes and number of points used for fitting process. This explains complicated distribution of point clouds over the branches. Overall cylinder model produces good results with most branch sizes and number of point clouds for fitting. The cylinder fitting approach shows significantly better estimation results compared to sphere and ellipse fitting models. Penerbit UTM Press 2015-02 Article PeerReviewed application/pdf en http://eprints.utm.my/55835/1/ZulkepliMajid2015_IndividualTreeMeasurementinTropicalEnvironment.pdf Abdul Rahman, Muhammad Zulkarnain and Majid, Zulkepli and Abu Bakar, Md. Afif and Rasib, Abd. Wahid and Wan Kadir, Wan Hazli (2015) Individual tree measurement in tropical environment using terrestrial laser scanning. Jurnal Teknologi, 73 (5). pp. 127-133. ISSN 2180-3722 http://dx.doi.org/10.11113/jt.v73.4329 DOI:10.11113/jt.v73.4329 |
| spellingShingle | G70.212-70.215 Geographic information system Abdul Rahman, Muhammad Zulkarnain Majid, Zulkepli Abu Bakar, Md. Afif Rasib, Abd. Wahid Wan Kadir, Wan Hazli Individual tree measurement in tropical environment using terrestrial laser scanning |
| title | Individual tree measurement in tropical environment using terrestrial laser scanning |
| title_full | Individual tree measurement in tropical environment using terrestrial laser scanning |
| title_fullStr | Individual tree measurement in tropical environment using terrestrial laser scanning |
| title_full_unstemmed | Individual tree measurement in tropical environment using terrestrial laser scanning |
| title_short | Individual tree measurement in tropical environment using terrestrial laser scanning |
| title_sort | individual tree measurement in tropical environment using terrestrial laser scanning |
| topic | G70.212-70.215 Geographic information system |
| url | http://eprints.utm.my/55835/1/ZulkepliMajid2015_IndividualTreeMeasurementinTropicalEnvironment.pdf |
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