Modelling of LiDAR return on surface object reflected as specular and diffuse components / Noraain Mohamed Saraf

The useful of LiDAR data in the industry necessitate user the ability of managing LiDAR data according to their purpose, for example in 3-D mapping. Dealing with 3- D mapping, features information of LiDAR data (e.g building and tree) have been tremendously useful. This research intent to investigat...

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Main Author:	Mohamed Saraf, Noraain
Format:	Thesis
Language:	English
Published:	2017
Subjects:	Instruments and machines
Online Access:	https://ir.uitm.edu.my/id/eprint/18880/2/18880.pdf
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id	my-uitm-ir.18880
record_format	uketd_dc
spelling	my-uitm-ir.188802024-08-01T06:48:08Z Modelling of LiDAR return on surface object reflected as specular and diffuse components / Noraain Mohamed Saraf 2017 Mohamed Saraf, Noraain Instruments and machines The useful of LiDAR data in the industry necessitate user the ability of managing LiDAR data according to their purpose, for example in 3-D mapping. Dealing with 3- D mapping, features information of LiDAR data (e.g building and tree) have been tremendously useful. This research intent to investigate the characteristics of LiDAR return pulses coming of specular (building) and diffuse (tree) objects from LiDAR derived surface models of the urban study site in Ampang, Kuala Lumpur. Contour, slope and aspect are three of those products that could be derived from LiDAR data. The data were initially checked and verified accordingly. Digital models (DEM and DSM) were generated based on this LiDAR data involving classification, filtering and masking. A normalized DSM was extracted to separate the buildings from other spatial features. Slope and aspect analysis were conducted based upon segmentation on the rooftop. Furthermore, height of building and tree were estimated. Hence, an error assessment was done and findings were highlighted and documented. The result of LiDAR verification certifies that the data is reliable and useable where the Root Mean Square (RMS) error obtained is within the tolerance value of vertical accuracy (z), which is 0.096m. Thus, specular and object extraction were conducted with error assessment less than 10 percent. The segmentation applied based on contour, slope and aspect analyses indicate that the approach can derive the reliable and accurate 3-D building. The finding from this study demonstrates the capability and the effectiveness of LiDAR data. 2017 Thesis https://ir.uitm.edu.my/id/eprint/18880/ https://ir.uitm.edu.my/id/eprint/18880/2/18880.pdf text en public mphil masters Universiti Teknologi MARA Faculty of Architecture, Planning and Surveying
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
topic	Instruments and machines
spellingShingle	Instruments and machines Mohamed Saraf, Noraain Modelling of LiDAR return on surface object reflected as specular and diffuse components / Noraain Mohamed Saraf
description	The useful of LiDAR data in the industry necessitate user the ability of managing LiDAR data according to their purpose, for example in 3-D mapping. Dealing with 3- D mapping, features information of LiDAR data (e.g building and tree) have been tremendously useful. This research intent to investigate the characteristics of LiDAR return pulses coming of specular (building) and diffuse (tree) objects from LiDAR derived surface models of the urban study site in Ampang, Kuala Lumpur. Contour, slope and aspect are three of those products that could be derived from LiDAR data. The data were initially checked and verified accordingly. Digital models (DEM and DSM) were generated based on this LiDAR data involving classification, filtering and masking. A normalized DSM was extracted to separate the buildings from other spatial features. Slope and aspect analysis were conducted based upon segmentation on the rooftop. Furthermore, height of building and tree were estimated. Hence, an error assessment was done and findings were highlighted and documented. The result of LiDAR verification certifies that the data is reliable and useable where the Root Mean Square (RMS) error obtained is within the tolerance value of vertical accuracy (z), which is 0.096m. Thus, specular and object extraction were conducted with error assessment less than 10 percent. The segmentation applied based on contour, slope and aspect analyses indicate that the approach can derive the reliable and accurate 3-D building. The finding from this study demonstrates the capability and the effectiveness of LiDAR data.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Mohamed Saraf, Noraain
author_facet	Mohamed Saraf, Noraain
author_sort	Mohamed Saraf, Noraain
title	Modelling of LiDAR return on surface object reflected as specular and diffuse components / Noraain Mohamed Saraf
title_short	Modelling of LiDAR return on surface object reflected as specular and diffuse components / Noraain Mohamed Saraf
title_full	Modelling of LiDAR return on surface object reflected as specular and diffuse components / Noraain Mohamed Saraf
title_fullStr	Modelling of LiDAR return on surface object reflected as specular and diffuse components / Noraain Mohamed Saraf
title_full_unstemmed	Modelling of LiDAR return on surface object reflected as specular and diffuse components / Noraain Mohamed Saraf
title_sort	modelling of lidar return on surface object reflected as specular and diffuse components / noraain mohamed saraf
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Architecture, Planning and Surveying
publishDate	2017
url	https://ir.uitm.edu.my/id/eprint/18880/2/18880.pdf
_version_	1811768600526061568

Modelling of LiDAR return on surface object reflected as specular and diffuse components / Noraain Mohamed Saraf

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