Cristin-resultat-ID: 1648129
Sist endret: 13. mars 2019, 12:53
NVI-rapporteringsår: 2018
Resultat
Vitenskapelig artikkel
2018

Range-gated imaging system for underwater monitoring in ocean environment

Bidragsytere:
  • Patrizio Mariani
  • Inaki Quincoces
  • Karl Henrik Haugholt
  • Yves Chardard
  • André W. Visser
  • Chris Yates
  • mfl.

Tidsskrift

Sustainability
ISSN 2071-1050
e-ISSN 2071-1050
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2018
Publisert online: 2018
Trykket: 2019
Volum: 11:162
Hefte: 1
Sider: 1 - 13
Open Access

Importkilder

Scopus-ID: 2-s2.0-85059351500

Beskrivelse Beskrivelse

Tittel

Range-gated imaging system for underwater monitoring in ocean environment

Sammendrag

High-quality video observations are very much needed in underwater environments for the monitoring of several ecosystem indicators and to support the sustainable development and management of almost all activities in the ocean. Reliable video observations are however challenging to collect, because of the generally poor visibility conditions and the difficulties to deploy cost-effective sensors and platforms in the marine environment. Visibility in water is regulated by natural light availability at different depths, and by the presence of suspended particles, scattering incident light in all directions. Those elements are also largely variable in time and space, making it difficult to identify technological solutions that can be used in all conditions. By combining state-of-the-art “time of flight” (ToF) image sensors and innovative pulsed laser illumination, we have developed a range-gated camera system (UTOFIA) that enables affordable and enhanced 3D underwater imaging at high resolution. This range-gated solution allows users to eliminate close-range backscattering, improving quality of the images and providing information on the distance of each illuminated object, hence giving access to real-time 3D measurements. Furthermore, as the system is based on pulsed laser light, it is almost independent of natural light conditions and can achieve similar performances at an extended depth range. We use this system to collect observations in different oceanographic conditions and for different applications, including aquaculture monitoring, seafloor mapping, litter identifications and structure inspection. Performances are evaluated by comparing images to regular cameras and by using standard targets to assess accuracy and precision of distance measurements. We suggest that this type of technology can become a standard in underwater 3D imaging to support the future development of the ocean economy

Bidragsytere

Patrizio Mariani

  • Tilknyttet:
    Forfatter
    ved Danmarks Tekniske Universitet

Inaki Quincoces

  • Tilknyttet:
    Forfatter
    ved AZTI-Tecnalia

Karl Henrik Haugholt

  • Tilknyttet:
    Forfatter
    ved Smart Sensor Systems ved SINTEF AS

Yves Chardard

  • Tilknyttet:
    Forfatter
    ved Frankrike

André W. Visser

  • Tilknyttet:
    Forfatter
    ved Danmarks Tekniske Universitet
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