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,...
Published in: | Sensors |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2009
|
Subjects: | |
Online Access: | https://doi.org/10.3390/s90705825 https://doaj.org/article/a3cdff957bbd48e7ac22140c2b88fc17 |
id |
ftdoajarticles:oai:doaj.org/article:a3cdff957bbd48e7ac22140c2b88fc17 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:a3cdff957bbd48e7ac22140c2b88fc17 2023-05-15T17:33:20+02:00 Fundamentals of in Situ Digital Camera Methodology for Water Quality Monitoring of Coast and Ocean Martin White Dave Bowers Lonneke Goddijn-Murphy Damien Dailloux 2009-07-01T00:00:00Z https://doi.org/10.3390/s90705825 https://doaj.org/article/a3cdff957bbd48e7ac22140c2b88fc17 EN eng MDPI AG http://www.mdpi.com/1424-8220/9/7/5825/ https://doaj.org/toc/1424-8220 doi:10.3390/s90705825 1424-8220 https://doaj.org/article/a3cdff957bbd48e7ac22140c2b88fc17 Sensors, Vol 9, Iss 7, Pp 5825-5843 (2009) digital camera ocean colour marine technology advancement Chemical technology TP1-1185 article 2009 ftdoajarticles https://doi.org/10.3390/s90705825 2022-12-30T21:55:55Z 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. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Rockall Trough ENVELOPE(-15.036,-15.036,53.825,53.825) Sensors 9 7 5825 5843 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
digital camera ocean colour marine technology advancement Chemical technology TP1-1185 |
spellingShingle |
digital camera ocean colour marine technology advancement Chemical technology TP1-1185 Martin White Dave Bowers Lonneke Goddijn-Murphy Damien Dailloux Fundamentals of in Situ Digital Camera Methodology for Water Quality Monitoring of Coast and Ocean |
topic_facet |
digital camera ocean colour marine technology advancement Chemical technology TP1-1185 |
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 |
Article in Journal/Newspaper |
author |
Martin White Dave Bowers Lonneke Goddijn-Murphy Damien Dailloux |
author_facet |
Martin White Dave Bowers Lonneke Goddijn-Murphy Damien Dailloux |
author_sort |
Martin White |
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 |
MDPI AG |
publishDate |
2009 |
url |
https://doi.org/10.3390/s90705825 https://doaj.org/article/a3cdff957bbd48e7ac22140c2b88fc17 |
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_source |
Sensors, Vol 9, Iss 7, Pp 5825-5843 (2009) |
op_relation |
http://www.mdpi.com/1424-8220/9/7/5825/ https://doaj.org/toc/1424-8220 doi:10.3390/s90705825 1424-8220 https://doaj.org/article/a3cdff957bbd48e7ac22140c2b88fc17 |
op_doi |
https://doi.org/10.3390/s90705825 |
container_title |
Sensors |
container_volume |
9 |
container_issue |
7 |
container_start_page |
5825 |
op_container_end_page |
5843 |
_version_ |
1766131806467260416 |