Visibility enhancement of underwater images based on polarization common-mode rejection of a highly polarized target signal

Underwater active polarization imaging is promising due to its effect of significantly descattering. Polarization-difference is commonly used to filter out backscattered noise. However, the polarization common-mode rejection of target signal has rarely been utilized. In this paper, via taking full a...

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Bibliographic Details
Published in:Optics express 2022-11, Vol.30 (24), p.43973-43986
Main Authors: Li, Haoxiang, Zhu, Jingping, Deng, Jinxin, Guo, Fengqi, Yue, Liu, Sun, Jian, Zhang, Yunyao, Hou, Xun
Format: Article
Language:English
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Summary:Underwater active polarization imaging is promising due to its effect of significantly descattering. Polarization-difference is commonly used to filter out backscattered noise. However, the polarization common-mode rejection of target signal has rarely been utilized. In this paper, via taking full advantage of this feature of Stokes vectors S which ably avoids interference from target light, the spatial variation of the degree of polarization of backscattered light is accurately estimated, and the whole scene intensity distribution of background is reconstructed by Gaussian surface fitting based on least square. Meanwhile, the underwater image quality measure is applied as optimization feedback, through iterative computations, not only sufficiently suppresses backscattered noise but also better highlights the details of the target. Experimental results demonstrate the effectiveness of the proposed method for highly polarized target in strongly scattering water.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.474365