An optimized volume determination method based on aerial photogrammetry approach for sustainable environment

Beach erosion occurs continuously along the shoreline due to the interaction of natural processes. The beach volume aspect is critical to represent the entire profile of beach evolution. Most advanced survey techniques are costly, requiring arduous control survey setup effort to measure the beach vo...

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Main Author:	Yusoff, Ahmad Razali
Format:	Thesis
Language:	English
Published:	2022
Subjects:	G Geography (General)
Online Access:	http://eprints.utm.my/id/eprint/99898/1/AhmadRazaliYusoffMFABU2022.pdf
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id	my-utm-ep.99898
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spelling	my-utm-ep.998982023-03-29T06:00:49Z An optimized volume determination method based on aerial photogrammetry approach for sustainable environment 2022 Yusoff, Ahmad Razali G Geography (General) TA Engineering (General). Civil engineering (General) Beach erosion occurs continuously along the shoreline due to the interaction of natural processes. The beach volume aspect is critical to represent the entire profile of beach evolution. Most advanced survey techniques are costly, requiring arduous control survey setup effort to measure the beach volume. Unmanned Aerial Vehicle (UAV) systems have recently attracted interest in the mapping community, which provides similar products to aircraft systems and comes with Structure from Motion Multi View Stereo (SfM-MVS) technology at a lower cost. The UAV photogrammetric beach volume mappings were mostly conducted by using nonoptimal methods such as low altitude mapping, bundle amount of Ground Control Points (GCPs) distribution, and uncalibrated Ground Sample Distance (GSD). Hence, this study aims to invent an optimized volume determination method accurately using Unmanned Aerial Vehicle (UAV) photogrammetry mapping to minimize work time and perform less laborious beach mapping work for sustainable environment study through several objevtives, firstly, to investigate the camera calibrations, UAV altitudes, and GCPs distribution for optimized beach volume UAV mapping method, secondly, to modify the SfM-MVS photogrammetric volume formula for the development of accurate and optimized beach volume mapping method, and thirdly, to analyze the optimized beach volume mapping method produced. The study was conducted at Desaru Beach, Universiti Teknologi Malaysia (UTM), Irama Beach 1, and Irama Beach 2. Various GCP distributions (3, 4, 5, 6, 8, 10, 15, and 20 GCPs) and UAV mapping altitude differences at 10m, 20m, 30m, 40m, 50m, 60m, 80m, and 100m were studied. This study utilized robust statistical analysis to investigate the beach volume measurement trend and UAV mapping behaviour from various GCP distributions and different UAV altitude mapping. The study results indicated that 4GCP and 100m altitude UAV mapping were the optimal methods for measuring beach volume using UAV with minimal mapping work. Based on the modified photogrammetric volume calculation methods in determining the beach volume, it is evident that the beach volume value is significant. In conclusion, this study shows that the modified photogrammetric volume formula provides better accuracy than the existing volume formula. 2022 Thesis http://eprints.utm.my/id/eprint/99898/ http://eprints.utm.my/id/eprint/99898/1/AhmadRazaliYusoffMFABU2022.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:150041 phd doctoral Universiti Teknologi Malaysia, Faculty of Built Environment & Surveying Faculty of Built Environment & Surveying
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	G Geography (General) G Geography (General)
spellingShingle	G Geography (General) G Geography (General) Yusoff, Ahmad Razali An optimized volume determination method based on aerial photogrammetry approach for sustainable environment
description	Beach erosion occurs continuously along the shoreline due to the interaction of natural processes. The beach volume aspect is critical to represent the entire profile of beach evolution. Most advanced survey techniques are costly, requiring arduous control survey setup effort to measure the beach volume. Unmanned Aerial Vehicle (UAV) systems have recently attracted interest in the mapping community, which provides similar products to aircraft systems and comes with Structure from Motion Multi View Stereo (SfM-MVS) technology at a lower cost. The UAV photogrammetric beach volume mappings were mostly conducted by using nonoptimal methods such as low altitude mapping, bundle amount of Ground Control Points (GCPs) distribution, and uncalibrated Ground Sample Distance (GSD). Hence, this study aims to invent an optimized volume determination method accurately using Unmanned Aerial Vehicle (UAV) photogrammetry mapping to minimize work time and perform less laborious beach mapping work for sustainable environment study through several objevtives, firstly, to investigate the camera calibrations, UAV altitudes, and GCPs distribution for optimized beach volume UAV mapping method, secondly, to modify the SfM-MVS photogrammetric volume formula for the development of accurate and optimized beach volume mapping method, and thirdly, to analyze the optimized beach volume mapping method produced. The study was conducted at Desaru Beach, Universiti Teknologi Malaysia (UTM), Irama Beach 1, and Irama Beach 2. Various GCP distributions (3, 4, 5, 6, 8, 10, 15, and 20 GCPs) and UAV mapping altitude differences at 10m, 20m, 30m, 40m, 50m, 60m, 80m, and 100m were studied. This study utilized robust statistical analysis to investigate the beach volume measurement trend and UAV mapping behaviour from various GCP distributions and different UAV altitude mapping. The study results indicated that 4GCP and 100m altitude UAV mapping were the optimal methods for measuring beach volume using UAV with minimal mapping work. Based on the modified photogrammetric volume calculation methods in determining the beach volume, it is evident that the beach volume value is significant. In conclusion, this study shows that the modified photogrammetric volume formula provides better accuracy than the existing volume formula.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Yusoff, Ahmad Razali
author_facet	Yusoff, Ahmad Razali
author_sort	Yusoff, Ahmad Razali
title	An optimized volume determination method based on aerial photogrammetry approach for sustainable environment
title_short	An optimized volume determination method based on aerial photogrammetry approach for sustainable environment
title_full	An optimized volume determination method based on aerial photogrammetry approach for sustainable environment
title_fullStr	An optimized volume determination method based on aerial photogrammetry approach for sustainable environment
title_full_unstemmed	An optimized volume determination method based on aerial photogrammetry approach for sustainable environment
title_sort	optimized volume determination method based on aerial photogrammetry approach for sustainable environment
granting_institution	Universiti Teknologi Malaysia, Faculty of Built Environment & Surveying
granting_department	Faculty of Built Environment & Surveying
publishDate	2022
url	http://eprints.utm.my/id/eprint/99898/1/AhmadRazaliYusoffMFABU2022.pdf
_version_	1776100653087588352

An optimized volume determination method based on aerial photogrammetry approach for sustainable environment

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