Newswise — Coral reefs, nurturing hubs of marine biodiversity, are grappling with mounting threats from environmental shifts. Traditional monitoring techniques, often laborious and invasive, are proving inadequate in the face of rapid ecological changes. Enter deep learning, a frontier technology that, when coupled with underwater imaging, offers a non-invasive solution poised to transform our approach to coral reef management and understanding.

A recent review (DOI: 10.1080/10095020.2024.2343323) published in Geo-spatial Information Science on May 1, 2024, illuminates the profound impact of deep learning on enhancing underwater coral image segmentation. Spearheaded by a collaborative team from Wuhan University, this study employs cutting-edge AI to markedly elevate the precision and efficiency of coral reef surveillance, arming environmental scientists and conservationists with powerful new analytical tools.

The research pivots on the creation and assessment of a novel, densely annotated dataset, engineered for the semantic segmentation of coral images—a critical task for the precise demarcation of coral from other underwater features. This dataset facilitated a thorough examination of both established and emergent deep learning models, evaluating their capacity to perform under real-world conditions. The study’s meticulous analysis of these models’ map-generating capabilities is pivotal for monitoring shifts and assessing the vitality of reef environments. The team delved into an array of sophisticated machine learning strategies, including convolutional neural networks and semantic segmentation techniques, tailored to surmount the unique challenges of underwater imaging, such as fluctuating light conditions and visual impediments.

Dr. Hanqi Zhang, a co-author of the study, remarks, “Incorporating deep learning into the segmentation of underwater coral images is a game-changer for our capacity to monitor and act on environmental threats to coral reefs. This innovation empowers us with a rapid and precise means to chart and evaluate the well-being of these indispensable ecosystems.”

The study’s revelations are set to have a significant ripple effect across the fields of marine biology and conservation. With the advent of refined image segmentation methodologies, specialists are now empowered to produce high-resolution coral reef maps with greater accuracy and efficiency. This leap forward is instrumental in formulating vigilant monitoring and conservation strategies, vital for the endurance of coral reef ecosystems.





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Funding information

This work is supported by the U.S. National Science Foundation [Grant No.OCE 2224354] and earlier awards for the Moorea Coral Reef LTER, the Italian Minister of University and Research [Grant No.PNRA18 00263-B2], and the National Natural Science Foundation of China [Grant No.41901407].

About Geo-spatial Information Science

Geo-spatial Information Science is an open access journal that publishes research on the application and development of surveying and mapping technology. Geo-spatial Information Science was founded by Wuhan University and is now published in partnership with Taylor & Francis. The journal particularly encourages papers on innovative applications and theories in the fields above, or of an interdisciplinary nature. Geo-spatial Information Science’s editorial committee consists of 21 professors and research scientists from different regions and countries, such as America, Germany, Switzerland, Austria, and China. All articles are made freely and permanently available online through gold open access publication.