Universiti Teknologi Malaysia Institutional Repository

Canopy height estimation from lidar data using open source software compared with commercial software

Hashim, Nurhanisah and Majid, Zulkepli and Setan, Halim (2011) Canopy height estimation from lidar data using open source software compared with commercial software. Geoinformation Science Journal, 11 (2). pp. 28-40. ISSN 1511-9491

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Official URL: http://www.fksg.utm.my/journal/GSJ/GSJ%20VOL%2011%...

Abstract

The goal of this study is to analyze the performance of Open Source Software (OSS) towards the generation of Digital Terrain Model (DTM) and Digital Surface Model (DSM), further on estimates the canopy height by using Light Detection and Ranging (LIDAR) data. Generation of DTM and DSM are very important in this research to ensure that better canopy height can be modeled. DTM and DSM commonly known as a digital representation of earth surface topography where DTM only represent the ground surface while DSM represent all the features including buildings and trees. Many software that have a function to generate DTM and DSM were developed recently. However, most software has been commercialized; therefore it requires a high expenditure to own the software. Advanced technology has lead to the emergence of the growing OSS. OSS is software that can be downloaded for free via the internet. By taking the forestry area of Pekan, Pahang for this research, LIDAR data for that particular area is processed by using the OSS Geographic Resources Analysis Support System (GRASS). To determine the effectiveness and capability of GRASS in the DTM and DSM generation, the same data were processed using commercial software which is TerraScan so that the result can be compared, further on better canopy height can be modeled

Item Type:Article
Uncontrolled Keywords:lidar, digital terrain model, digital surface model, canopy height, open source software.
Subjects:G Geography. Anthropology. Recreation > G Geography (General)
Divisions:Geoinformation and Real Estate
ID Code:27799
Deposited By: Nurul Asilah Mahmood
Deposited On:10 Aug 2012 02:27
Last Modified:10 Aug 2012 02:27

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