Digital image processing to detect subtle motion in stony coral

Abstract Coral reef ecosystems support significant biological activities and harbor huge diversity, but they are facing a severe crisis driven by anthropogenic activities and climate change. An important behavioral trait of the coral holobiont is coral motion, which may play an essential role in fee...

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Autores principales:	Shuaifeng Li, Liza M. Roger, Lokender Kumar, Nastassja A. Lewinski, Judith Klein-Seetharaman, Alex Gagnon, Hollie M. Putnam, Jinkyu Yang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bb39cc4c78744935a55f3956dc75eb7d
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spelling	oai:doaj.org-article:bb39cc4c78744935a55f3956dc75eb7d2021-12-02T14:17:16ZDigital image processing to detect subtle motion in stony coral10.1038/s41598-021-85800-72045-2322https://doaj.org/article/bb39cc4c78744935a55f3956dc75eb7d2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85800-7https://doaj.org/toc/2045-2322Abstract Coral reef ecosystems support significant biological activities and harbor huge diversity, but they are facing a severe crisis driven by anthropogenic activities and climate change. An important behavioral trait of the coral holobiont is coral motion, which may play an essential role in feeding, competition, reproduction, and thus survival and fitness. Therefore, characterizing coral behavior through motion analysis will aid our understanding of basic biological and physical coral functions. However, tissue motion in the stony scleractinian corals that contribute most to coral reef construction are subtle and may be imperceptible to both the human eye and commonly used imaging techniques. Here we propose and apply a systematic approach to quantify and visualize subtle coral motion across a series of light and dark cycles in the scleractinian coral Montipora capricornis. We use digital image correlation and optical flow techniques to quantify and characterize minute coral motions under different light conditions. In addition, as a visualization tool, motion magnification algorithm magnifies coral motions in different frequencies, which explicitly displays the distinctive dynamic modes of coral movement. Specifically, our assessment of displacement, strain, optical flow, and mode shape quantify coral motion under different light conditions, and they all show that M. capricornis exhibits more active motions at night compared to day. Our approach provides an unprecedented insight into micro-scale coral movement and behavior through macro-scale digital imaging, thus offering a useful empirical toolset for the coral research community.Shuaifeng LiLiza M. RogerLokender KumarNastassja A. LewinskiJudith Klein-SeetharamanAlex GagnonHollie M. PutnamJinkyu YangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shuaifeng Li Liza M. Roger Lokender Kumar Nastassja A. Lewinski Judith Klein-Seetharaman Alex Gagnon Hollie M. Putnam Jinkyu Yang Digital image processing to detect subtle motion in stony coral
description	Abstract Coral reef ecosystems support significant biological activities and harbor huge diversity, but they are facing a severe crisis driven by anthropogenic activities and climate change. An important behavioral trait of the coral holobiont is coral motion, which may play an essential role in feeding, competition, reproduction, and thus survival and fitness. Therefore, characterizing coral behavior through motion analysis will aid our understanding of basic biological and physical coral functions. However, tissue motion in the stony scleractinian corals that contribute most to coral reef construction are subtle and may be imperceptible to both the human eye and commonly used imaging techniques. Here we propose and apply a systematic approach to quantify and visualize subtle coral motion across a series of light and dark cycles in the scleractinian coral Montipora capricornis. We use digital image correlation and optical flow techniques to quantify and characterize minute coral motions under different light conditions. In addition, as a visualization tool, motion magnification algorithm magnifies coral motions in different frequencies, which explicitly displays the distinctive dynamic modes of coral movement. Specifically, our assessment of displacement, strain, optical flow, and mode shape quantify coral motion under different light conditions, and they all show that M. capricornis exhibits more active motions at night compared to day. Our approach provides an unprecedented insight into micro-scale coral movement and behavior through macro-scale digital imaging, thus offering a useful empirical toolset for the coral research community.
format	article
author	Shuaifeng Li Liza M. Roger Lokender Kumar Nastassja A. Lewinski Judith Klein-Seetharaman Alex Gagnon Hollie M. Putnam Jinkyu Yang
author_facet	Shuaifeng Li Liza M. Roger Lokender Kumar Nastassja A. Lewinski Judith Klein-Seetharaman Alex Gagnon Hollie M. Putnam Jinkyu Yang
author_sort	Shuaifeng Li
title	Digital image processing to detect subtle motion in stony coral
title_short	Digital image processing to detect subtle motion in stony coral
title_full	Digital image processing to detect subtle motion in stony coral
title_fullStr	Digital image processing to detect subtle motion in stony coral
title_full_unstemmed	Digital image processing to detect subtle motion in stony coral
title_sort	digital image processing to detect subtle motion in stony coral
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/bb39cc4c78744935a55f3956dc75eb7d
work_keys_str_mv	AT shuaifengli digitalimageprocessingtodetectsubtlemotioninstonycoral AT lizamroger digitalimageprocessingtodetectsubtlemotioninstonycoral AT lokenderkumar digitalimageprocessingtodetectsubtlemotioninstonycoral AT nastassjaalewinski digitalimageprocessingtodetectsubtlemotioninstonycoral AT judithkleinseetharaman digitalimageprocessingtodetectsubtlemotioninstonycoral AT alexgagnon digitalimageprocessingtodetectsubtlemotioninstonycoral AT holliemputnam digitalimageprocessingtodetectsubtlemotioninstonycoral AT jinkyuyang digitalimageprocessingtodetectsubtlemotioninstonycoral
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Digital image processing to detect subtle motion in stony coral

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