Mapping coral reef using photogrammetry technique: A preliminary study at Pulau Udar Besar, Sabah, Malaysia

Han, Daniella Hsu Tsyr and Muhammad Ali Syed Hussein and Zarinah Waheed (2021) Mapping coral reef using photogrammetry technique: A preliminary study at Pulau Udar Besar, Sabah, Malaysia. Borneo Journal of Marine Science and Aquaculture, 5. pp. 70-74. ISSN 2289-5892

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Mapping of coral reefs is useful for understanding, monitoring and tracking their development. However, studies on reef mapping in the Southeast Asian region are limited. The main objectives of this study were to 1) map the coral reefs using photogrammetry in order to create a 3D map of the reef, and 2) determine the coral growth forms and identify the corals to the lowest possible taxa from the images. Data collection was conducted on 19 and 24 January 2018. All images were captured by applying photogrammetry technique using a digital camera with waterproof housing. Image reconstruction process was performed in Agi soft Photos can and Blender, using the structure-from-motion (SfM) algorithms to reconstruct the 2-Dimensional images into a 3D model. The reef map generated from Agi soft Photos can is of medium quality. Coral growth forms were determined and identified to the lowest possible taxa through the images. From the images, free-living corals of the family Fungiidae were the most common coral observed in the study site. In conclusion, the output of this study shows that reef mapping is possible using a photogrammetry approach and images can be used to identify coral growth forms.

Item Type: Article
Keyword: Image reconstruction , 3D imagery , Coral growth form , Kota Kinabalu
Subjects: G Geography. Anthropology. Recreation > GB Physical geography > GB3-5030 Physical geography > GB400-649 Geomorphology. Landforms. Terrain > GB461-468.995 Reefs
Q Science > QL Zoology > QL1-991 Zoology > QL1-355 General Including geographical distribution
Department: FACULTY > Faculty of Science and Natural Resources
Date Deposited: 12 Jul 2022 19:57
Last Modified: 12 Jul 2022 19:57

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