• Photonics Research
  • Vol. 12, Issue 8, 1640 (2024)
Yifu Zhou1,2, Hanyue Wei1,2, Jian Liang1,2, Feiya Ma1,2..., Rui Yang1,2, Liyong Ren1,2,3,* and Xuelong Li4,5|Show fewer author(s)
Author Affiliations
  • 1School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710119, China
  • 2Xi’an Key Laboratory of Optical Information Manipulation and Augmentation (OMA), Xi’an 710119, China
  • 3Robust (Xixian New Area) Opto-Electro Technologies Co., Ltd., Xi’an 712000, China
  • 4Institute of Artificial Intelligence (TeleAI), China Telecom Corp Ltd., Beijing 100033, China
  • 5e-mail: xuelong_li@ieee.org
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    DOI: 10.1364/PRJ.522370 Cite this Article Set citation alerts
    Yifu Zhou, Hanyue Wei, Jian Liang, Feiya Ma, Rui Yang, Liyong Ren, Xuelong Li, "Robust polarimetric dehazing algorithm based on low-rank approximation and multiple virtual-exposure fusion," Photonics Res. 12, 1640 (2024) Copy Citation Text show less

    Abstract

    Polarimetric dehazing is an effective way to enhance the quality of images captured in foggy weather. However, images of essential polarization parameters are vulnerable to noise, and the brightness of dehazed images is usually unstable due to different environmental illuminations. These two weaknesses reveal that current polarimetric dehazing algorithms are not robust enough to deal with different scenarios. This paper proposes a novel, to our knowledge, and robust polarimetric dehazing algorithm to enhance the quality of hazy images, where a low-rank approximation method is used to obtain low-noise polarization parameter images. Besides, in order to improve the brightness stability of the dehazed image and thus keep the image have more details within the standard dynamic range, this study proposes a multiple virtual-exposure fusion (MVEF) scheme to process the dehazed image (usually having a high dynamic range) obtained through polarimetric dehazing. Comparative experiments show that the proposed dehazing algorithm is robust and effective, which can significantly improve overall quality of hazy images captured under different environments.
    I(x,y)=D(x,y)+A(x,y),

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    D(x,y)=t(z)L(x,y),

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    A(x,y)=[1t(z)]A(x,y).

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    L(x,y)=I(x,y)A(x,y)1A(x,y)/A(x,y).

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    pA(x,y)=Ap(x,y)A(x,y).

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    p(x,y)=Ap(x,y)I(x,y),

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    pA=max[p(x,y)].

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    A=1.02×max[A(x,y)].

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    [S0S1S2]=[I0°+I90°I0°I90°I45°I135°],

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    {I(x,y)=S0(x,y),p(x,y)=S12(x,y)+S22(x,y)S0(x,y).

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    M=[vec(I0°)vec(I45°)vec(I90°)vec(I135°)],

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    M=M+P+N,

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    MargminXRmn×4,rank(X)=1MXF,

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    pE=I(x,y)2Iu(x,y)I(x,y),

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    p(x,y)=p¯Sp¯EpE(x,y),

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    M=UΣVT,

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    M=σ1uvT,

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    Iout(x,y)=Iinγ(x,y),

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    Yifu Zhou, Hanyue Wei, Jian Liang, Feiya Ma, Rui Yang, Liyong Ren, Xuelong Li, "Robust polarimetric dehazing algorithm based on low-rank approximation and multiple virtual-exposure fusion," Photonics Res. 12, 1640 (2024)
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