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Proceedings Paper

Polarimetric imaging of underwater targets
Author(s): Alex Gilerson; Carlos Carrizo; Alberto Tonizzo; Amir Ibrahim; Ahmed El-Habashi; Robert Foster; Samir Ahmed
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Paper Abstract

Underwater imaging is challenging because of the significant attenuation of light due to absorption and scattering of light in water. Using polarization properties of light is one of the options for improving image quality. We present results of imaging of a polarized target in open ocean (Curacao) and coastal (NY Bight) waters. The target in the shape of a square is divided into several smaller squares, each of which is covered with a polarizing film with different polarization orientations or transmission coefficients was placed on a mirror and imaged under water by a green-band full-Stokes polarimetric video camera at the full range of azimuth angles against the Sun. The values of the Stokes vector components from the images are compared with the modeled image of the target using radiative transfer code for the atmosphere-ocean system combined with the simple imaging model. It is shown that even in clear water the impact of the water body on the polarized underwater image is very significant and retrieval of target polarization characteristics from the image is extremely challenging.

Paper Details

Date Published: 3 June 2013
PDF: 15 pages
Proc. SPIE 8724, Ocean Sensing and Monitoring V, 872403 (3 June 2013); doi: 10.1117/12.2018132
Show Author Affiliations
Alex Gilerson, The City College of the City Univ. of New York (United States)
Carlos Carrizo, The City College of the City Univ. of New York (United States)
Alberto Tonizzo, The City College of the City Univ. of New York (United States)
Amir Ibrahim, The City College of the City Univ. of New York (United States)
Ahmed El-Habashi, The City College of the City Univ. of New York (United States)
Robert Foster, The City College of the City Univ. of New York (United States)
Samir Ahmed, The City College of the City Univ. of New York (United States)


Published in SPIE Proceedings Vol. 8724:
Ocean Sensing and Monitoring V
Weilin W. Hou; Robert A. Arnone, Editor(s)

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