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Deeply seeing through highly turbid water by active polarization imaging

Fei Liu, Pingli Han, Yi Wei, Kui Yang, Shengzhi Huang, Xuan Li, Guang Zhang, Lu Bai, and Xiaopeng Shao

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Abstract

We hereby proposed and experimentally demonstrated an active polarization imaging technique, based on wavelength selection, for seeing through highly turbid water where targets are always visually lost. The method was realized by making use of the dependence of light scattering on wavelength in turbid water. Red light illumination was selected to minimize scattering occurring in light propagation and to guarantee accurate estimation of degree of polarization. Experiments demonstrate its contribution to turn targets in highly turbid water from “undetectable” to “detectable.”

© 2018 Optical Society of America

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Supplementary Material (1)

NameDescription
Visualization 1       This video displays the variation of imaging results of three different methods with changes of water turbidity. The three methods include the direct intensity imaging method, the imaging method from “T. Treibitz, and Y. Y. Schechner”, active polarizationdescattering," from IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE 31, 385–399 (2009,” and the proposed method. It clearly demonstrated the ability of the proposed method in imaging through highly turbid water.

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