UAV's remote sensing for observation of microatolls in shallow waters of small islands, Spermode Archipelago, Indonesia

Nurjannah Nurdin; Khairul Amri; Syafyudin Yusuf; Abd Rachman Rasyid; Agus Aris; Syazwi Qutbhi Al Azizi; Teruhisa Komatsu

doi:10.1117/12.2634330

28 October 2022 UAV's remote sensing for observation of microatolls in shallow waters of small islands, Spermode Archipelago, Indonesia

Nurjannah Nurdin, Khairul Amri, Syafyudin Yusuf, Abd Rachman Rasyid, Agus Aris, Syazwi Qutbhi Al Azizi, Teruhisa Komatsu

Author Affiliations +

Proceedings Volume 12263, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2022; 1226309 (2022) https://doi.org/10.1117/12.2634330
Event: SPIE Remote Sensing, 2022, Berlin, Germany

Abstract

Microatolls are massive corals on flat reefs with the colony dying in the center or there is a hole in the middle due to erosion by algae or other micro-borers. This study aims to measure the ability of UAV RGB imagery to identify micro atolls located on reef flats and objects associated with them on small islands. High resolution satellite images were also used to compare their accuracy in estimating the size of micro atolls. Some of the important steps carried out are field surveys, aerial and google earth photo acquisitions as well as mosaics, classification with segmentation based on, shape and color, texture, and shape of object proximity. RGB UAV is used to collect data and it is processed by object-based image analysis (OBIA) classification algorithm and supervised classification. This paper represents the result of UAV data analysis is more accurate and precise than high resolution satellite image data analysis. The diameter of the micro atoll can be calculated and the associated community around it. This technology allows it to be used for monitoring shallow water ecosystems bordering community activities on the mainland of small islands and producing a higher scale.

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Nurjannah Nurdin, Khairul Amri, Syafyudin Yusuf, Abd Rachman Rasyid, Agus Aris, Syazwi Qutbhi Al Azizi, and Teruhisa Komatsu "UAV's remote sensing for observation of microatolls in shallow waters of small islands, Spermode Archipelago, Indonesia", Proc. SPIE 12263, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2022, 1226309 (28 October 2022); https://doi.org/10.1117/12.2634330

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