Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Quantifying turbulence microstructure for improvement of underwater imaging

[+] Author Affiliations
Sarah Woods, Weilin Hou, Wesley Goode, Ewa Jarosz, Alan Weidemann

U.S. Naval Research Lab. (USA)

Proc. SPIE 8030, Ocean Sensing and Monitoring III, 80300A (May 04, 2011); doi:10.1117/12.887607
Text Size: A A A
From Conference Volume 8030

  • Ocean Sensing and Monitoring III
  • Weilin W. Hou; Robert Arnone
  • Orlando, Florida, USA | April 25, 2011


Enhancing visibility through scattering media is important in many fields for gaining information from the scattering medium. In the ocean, in particular, enhancement of imaging and visibility is important for divers, navigation, robotics, and target and mine detection and classification. Light scattering from particulates and turbulence in the ocean strongly affects underwater visibility. The magnitude of this degrading effect depends upon the underwater environment, and can rapidly degrade the quality of underwater imaging under certain conditions. To facilitate study of the impact of turbulence upon underwater imaging and to check against our previously developed model, quantified observation of the image degradation concurrent with characterization of the turbulent flow is necessary, spanning a variety of turbulent strengths. Therefore, we present field measurements of turbulence microstructure from the July 2010 Skaneateles Optical Turbulence Exercise (SOTEX), during which images of a target were collected over a 5 m path length at various depths in the water column, concurrent with profiles of the turbulent strength, optical properties, temperature, and conductivity. Turbulence was characterized by the turbulent kinetic energy dissipation (TKED) and thermal dissipation (TD) rates, which were obtained using both a Rockland Scientific Vertical Microstructure Profiler (VMP) and a Nortek Vector velocimeter in combination with a PME CT sensor. While the two instrumental setups demonstrate reasonable agreement, some irregularities highlight the spatial and temporal variability of the turbulence field. Supplementary measurements with the Vector/CT in a controlled laboratory convective tank will shed additional light on the quantitative relationship between image degradation and turbulence strength.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Sarah Woods ; Weilin Hou ; Wesley Goode ; Ewa Jarosz and Alan Weidemann
"Quantifying turbulence microstructure for improvement of underwater imaging", Proc. SPIE 8030, Ocean Sensing and Monitoring III, 80300A (May 04, 2011); doi:10.1117/12.887607; http://dx.doi.org/10.1117/12.887607

Access This Article
Sign In to Access Full Content
Please Wait... Processing your request... Please Wait.
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).



Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections


Buy this article ($18 for members, $25 for non-members).
Sign In