Deep learning-based retrieval of cyanobacteria pigment in inland water for in-situ and airborne hyperspectral data

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dc.contributor.author Yim, Inhyeok ko
dc.contributor.author Shin, Jihoon ko
dc.contributor.author Lee, Hyuk ko
dc.contributor.author Park, Sanghyun ko
dc.contributor.author Nam, Gibeom ko
dc.contributor.author Kang, Taegu ko
dc.contributor.author Cho, Kyung Hwa ko
dc.contributor.author Cha, YoonKyung ko
dc.date.available 2019-12-12T09:08:47Z -
dc.date.created 2019-12-04 ko
dc.date.issued 2020-03 ko
dc.identifier.citation ECOLOGICAL INDICATORS, v.110, pp.105879 ko
dc.identifier.issn 1470-160X ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/30558 -
dc.description.abstract Worldwide proliferation of cyanobacteria blooms in inland waters not only affects the intended use of water but potentially threatens human and animal health. In this study, a stacked autoencoder-deep neural network (SAE-DNN) was developed to estimate phycocyanin (PC) concentration by using in situ reflectance spectra in productive inland water. The estimated PC using the SAE-DNN was in close agreement with the measured PC, with an R2 of 0.87, root mean square error (RMSE) of 14.45 μg/L, and relative RMSE of 86.42%. The performance of the SAE-DNN was superior to that of the DNN and band-ratio algorithms. An analysis on the deep spectral features extracted using the SAE yielded the most useful spectral bands, namely 538, 596, and 735 nm, for the retrieval of PC. The estimation accuracy of the SAE-DNNPeaks, using only the aforementioned spectral bands as input variables, was comparable to that of the SAE-DNN, demonstrating that the high-level of abstraction using the SAE facilitated the improvement in feature learning. The application of the SAE-DNNPeaks to airborne hyperspectral image data resulted in an acceptable estimation accuracy, despite a bias toward underestimation, potentially arising from uncertainty associated with atmospheric correction, at high PC concentrations. Our results suggest that simple, empirical-based approaches, such as the SAE-DNNPeaks, have the potential to serve as a rapid assessment tool for the abundance and spatial distribution of cyanobacteria. ko
dc.language 영어 ko
dc.publisher Elsevier BV ko
dc.title Deep learning-based retrieval of cyanobacteria pigment in inland water for in-situ and airborne hyperspectral data ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85074534385 ko
dc.type.rims ART ko
dc.identifier.doi 10.1016/j.ecolind.2019.105879 ko
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S1470160X1930874X?via%3Dihub ko
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