TuLUMIS - a tunable LED-based underwater multispectral imaging system

Liu, Hongbo, Sticklus, Jan, Köser, Kevin, Hoving, Henk-Jan T., Song, Hong, Chen, Ying, Greinert, Jens and Schoening, Timm (2018) TuLUMIS - a tunable LED-based underwater multispectral imaging system Optics Express, 26 (6). p. 7811. DOI 10.1364/OE.26.007811.

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Abstract

Multispectral imaging (MSI) is widely used in terrestrial applications to help increase the discriminability between objects of interest. While MSI has shown potential for underwater geological and biological surveys, it is thus far rarely applied underwater. This is primarily due to the fact light propagation in water is subject to wavelength dependent attenuation and tough working conditions in the deep ocean. In this paper, a novel underwater MSI system based on a tunable light source is presented which employs a monochrome still image camera with flashing, pressure neutral color LEDs. Laboratory experiments and field tests were performed. Results from the lab experiments show an improvement of 76.66% on discriminating colors on a checkerboard by using the proposed imaging system over the use of an RGB camera. The field tests provided in situ MSI observations of pelagic fauna, and showed the first evidence that the system is capable of acquiring useful imagery under real marine conditions.

Document Type: Article
Additional Information: © 2018 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.
Keywords: Oceanic optics; Multispectral and hyperspectral imaging; Spectral discrimination; Optical systems
Research affiliation: OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-MUHS Magmatic and Hydrothermal Systems > Marine Mineralische Rohstoffe
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-MG Marine Geosystems
OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Evolutionary Ecology of Marine Fishes
OceanRep > The Future Ocean - Cluster of Excellence
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-MUHS Magmatic and Hydrothermal Systems
Refereed: Yes
DOI etc.: 10.1364/OE.26.007811
ISSN: 1094-4087
Projects: Future Ocean
Contribution Number:
ProjectNumber
eprint_fieldopt_contribution_number_project_DSM38
Expeditions/Models:
Date Deposited: 19 Mar 2018 09:33
Last Modified: 19 Mar 2018 09:42
URI: http://eprints.uni-kiel.de/id/eprint/42281

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