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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)
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.utm.my/id/eprint/99898/1/AhmadRazaliYusoffMFABU2022.pdf
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spelling my.utm.998982023-03-29T06:00:49Z http://eprints.utm.my/id/eprint/99898/ An optimized volume determination method based on aerial photogrammetry approach for sustainable environment 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 NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/99898/1/AhmadRazaliYusoffMFABU2022.pdf Yusoff, Ahmad Razali (2022) An optimized volume determination method based on aerial photogrammetry approach for sustainable environment. PhD thesis, Universiti Teknologi Malaysia, Faculty of Built Environment & Surveying. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:150041
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 G Geography (General)
TA Engineering (General). Civil engineering (General)
spellingShingle G Geography (General)
TA Engineering (General). Civil engineering (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
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
publishDate 2022
url http://eprints.utm.my/id/eprint/99898/1/AhmadRazaliYusoffMFABU2022.pdf
http://eprints.utm.my/id/eprint/99898/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:150041
_version_ 1762392176060268544
score 13.211869

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