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Comparison of 3D coral photogrammetry and coral video transect for coral lifeform analysis using low-cost underwater action camera

Ahmad, Zuhairi and Mohd Jinah, Muhammad Idzham Helmi and Saad, Shahbudin (2020) Comparison of 3D coral photogrammetry and coral video transect for coral lifeform analysis using low-cost underwater action camera. ASEAN Journal on Science & Technology for Development, 37 (1). pp. 15-20. ISSN 0217-5460 E-ISSN 2224-9028

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Abstract

This research analysed the use of 3D Coral Photogrammetry (CP) and Coral Video Transect (CVT) images collected from SCUBA divers using a low-cost underwater action camera to examine the coral lifeform. A comparison was made between data sets obtained using both methods on nine transects with different coral lifeform compositions and percentage cover within an area of 4 × 7 m. The comparison of the statistical analysis for CPCe revealed that there were no significant differences (p < 0.05) between CP and CVT photos where dead corals (p = 0.006), sand (p = 0.011), and unknown (p = 0.002) are present. Additionally, the coral value (p = 0.131) between CP and CVT was not significant. CP was capable of producing prominent branching, massive, and plate coral morphology results. This suggests that survey methods using low-cost action cameras for 3D Coral Photogrammetry would yield appropriate results in terms of coral lifeform detection. Hypothetically, by improving camera quality, It will yield a higher accuracy of 3D coral images that are suitable for use in scientific research and management. Other benefits of using CP include the possibilities for future studies with 3D coral surveys using remotely operated vehicles, less field time, and 3D coral seabed information.

Item Type: Article (Journal)
Additional Information: 7060/80448
Uncontrolled Keywords: 3D Coral Photogrammetry (CP), Coral Video Transect (CVT), Low-cost underwater camera
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA501 Surveying
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Science > Department of Marine Science
Depositing User: Dr. Zuhairi Ahmad
Date Deposited: 14 May 2020 16:21
Last Modified: 14 May 2020 16:21
URI: http://irep.iium.edu.my/id/eprint/80448

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