Fundamentals of in Situ Digital Camera Methodology for Water Quality Monitoring of Coast and Ocean
Conventional digital cameras, the Nikon Coolpix885® and the SeaLife ECOshot®, were used as in situ optical instruments for water quality monitoring. Measured response spectra showed that these digital cameras are basically three-band radiometers. The response values in the red, green and blue bands,...
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Molecular Diversity Preservation International (MDPI)
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ftpubmed:oai:pubmedcentral.nih.gov:3274132 2023-05-15T17:33:13+02:00 Fundamentals of in Situ Digital Camera Methodology for Water Quality Monitoring of Coast and Ocean Goddijn-Murphy, Lonneke Dailloux, Damien White, Martin Bowers, Dave 2009-07-22 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3274132 http://www.ncbi.nlm.nih.gov/pubmed/22346729 https://doi.org/10.3390/s90705825 en eng Molecular Diversity Preservation International (MDPI) http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3274132 http://www.ncbi.nlm.nih.gov/pubmed/22346729 http://dx.doi.org/10.3390/s90705825 © 2009 by the authors; licensee MDPI, Basel, Switzerland This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). CC-BY Article Text 2009 ftpubmed https://doi.org/10.3390/s90705825 2013-09-04T02:17:39Z Conventional digital cameras, the Nikon Coolpix885® and the SeaLife ECOshot®, were used as in situ optical instruments for water quality monitoring. Measured response spectra showed that these digital cameras are basically three-band radiometers. The response values in the red, green and blue bands, quantified by RGB values of digital images of the water surface, were comparable to measurements of irradiance levels at red, green and cyan/blue wavelengths of water leaving light. Different systems were deployed to capture upwelling light from below the surface, while eliminating direct surface reflection. Relationships between RGB ratios of water surface images, and water quality parameters were found to be consistent with previous measurements using more traditional narrow-band radiometers. This current paper focuses on the method that was used to acquire digital images, derive RGB values and relate measurements to water quality parameters. Field measurements were obtained in Galway Bay, Ireland, and in the Southern Rockall Trough in the North Atlantic, where both yellow substance and chlorophyll concentrations were successfully assessed using the digital camera method. Text North Atlantic PubMed Central (PMC) Rockall Trough ENVELOPE(-15.036,-15.036,53.825,53.825) Sensors 9 7 5825 5843 |
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Article Goddijn-Murphy, Lonneke Dailloux, Damien White, Martin Bowers, Dave Fundamentals of in Situ Digital Camera Methodology for Water Quality Monitoring of Coast and Ocean |
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Article |
description |
Conventional digital cameras, the Nikon Coolpix885® and the SeaLife ECOshot®, were used as in situ optical instruments for water quality monitoring. Measured response spectra showed that these digital cameras are basically three-band radiometers. The response values in the red, green and blue bands, quantified by RGB values of digital images of the water surface, were comparable to measurements of irradiance levels at red, green and cyan/blue wavelengths of water leaving light. Different systems were deployed to capture upwelling light from below the surface, while eliminating direct surface reflection. Relationships between RGB ratios of water surface images, and water quality parameters were found to be consistent with previous measurements using more traditional narrow-band radiometers. This current paper focuses on the method that was used to acquire digital images, derive RGB values and relate measurements to water quality parameters. Field measurements were obtained in Galway Bay, Ireland, and in the Southern Rockall Trough in the North Atlantic, where both yellow substance and chlorophyll concentrations were successfully assessed using the digital camera method. |
format |
Text |
author |
Goddijn-Murphy, Lonneke Dailloux, Damien White, Martin Bowers, Dave |
author_facet |
Goddijn-Murphy, Lonneke Dailloux, Damien White, Martin Bowers, Dave |
author_sort |
Goddijn-Murphy, Lonneke |
title |
Fundamentals of in Situ Digital Camera Methodology for Water Quality Monitoring of Coast and Ocean |
title_short |
Fundamentals of in Situ Digital Camera Methodology for Water Quality Monitoring of Coast and Ocean |
title_full |
Fundamentals of in Situ Digital Camera Methodology for Water Quality Monitoring of Coast and Ocean |
title_fullStr |
Fundamentals of in Situ Digital Camera Methodology for Water Quality Monitoring of Coast and Ocean |
title_full_unstemmed |
Fundamentals of in Situ Digital Camera Methodology for Water Quality Monitoring of Coast and Ocean |
title_sort |
fundamentals of in situ digital camera methodology for water quality monitoring of coast and ocean |
publisher |
Molecular Diversity Preservation International (MDPI) |
publishDate |
2009 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3274132 http://www.ncbi.nlm.nih.gov/pubmed/22346729 https://doi.org/10.3390/s90705825 |
long_lat |
ENVELOPE(-15.036,-15.036,53.825,53.825) |
geographic |
Rockall Trough |
geographic_facet |
Rockall Trough |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3274132 http://www.ncbi.nlm.nih.gov/pubmed/22346729 http://dx.doi.org/10.3390/s90705825 |
op_rights |
© 2009 by the authors; licensee MDPI, Basel, Switzerland This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/s90705825 |
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Sensors |
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5825 |
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5843 |
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1766131651264380928 |