Cover Image

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...

Full description

Saved in:
Bibliographic Details
Main Authors: Abdul Rahman, Muhammad Zulkarnain, Majid, Zulkepli, Abu Bakar, Md. Afif, Rasib, Abd. Wahid, Wan Kadir, Wan Hazli
Format: Article
Language:English
Published: Penerbit UTM Press 2015
Subjects:
G70.212-70.215 Geographic information system
Online Access:http://eprints.utm.my/id/eprint/55835/1/ZulkepliMajid2015_IndividualTreeMeasurementinTropicalEnvironment.pdf
http://eprints.utm.my/id/eprint/55835/
http://dx.doi.org/10.11113/jt.v73.4329
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.utm.55835
record_format eprints
spelling my.utm.558352017-11-01T04:16:53Z http://eprints.utm.my/id/eprint/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/id/eprint/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
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic G70.212-70.215 Geographic information system
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
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.
format Article
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
title Individual tree measurement in tropical environment using terrestrial laser scanning
title_short 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_sort individual tree measurement in tropical environment using terrestrial laser scanning
publisher Penerbit UTM Press
publishDate 2015
url http://eprints.utm.my/id/eprint/55835/1/ZulkepliMajid2015_IndividualTreeMeasurementinTropicalEnvironment.pdf
http://eprints.utm.my/id/eprint/55835/
http://dx.doi.org/10.11113/jt.v73.4329
_version_ 1643653915962507264
score 13.211869

Similar Items