• Photonics Research
  • Vol. 9, Issue 5, B220 (2021)
Shanshan Zheng1、2, Hao Wang1、2, Shi Dong1、2, Fei Wang1、2, and Guohai Situ1、2、3、4、*
Author Affiliations
  • 1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
  • 4CAS Center for Excellence in Ultra-intense Laser Science, Shanghai 201800, China
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    DOI: 10.1364/PRJ.416246 Cite this Article Set citation alerts
    Shanshan Zheng, Hao Wang, Shi Dong, Fei Wang, Guohai Situ. Incoherent imaging through highly nonstatic and optically thick turbid media based on neural network[J]. Photonics Research, 2021, 9(5): B220 Copy Citation Text show less

    Abstract

    Imaging through nonstatic scattering media is one of the major challenges in optics, and encountered in imaging through dense fog, turbid water, and many other situations. Here, we propose a method to achieve single-shot incoherent imaging through highly nonstatic and optically thick turbid media by using an end-to-end deep neural network. In this study, we use fat emulsion suspensions in a glass tank as a turbid medium and an additional incoherent light to introduce strong interference noise. We calibrate that the optical thickness of the tank of turbid media is as high as 16, and the signal-to-interference ratio is as low as -17 dB. Experimental results show that the proposed learning-based approach can reconstruct the object image with high fidelity in this severe environment.

    S{Io}=SW{Io}+SL{Io},

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    Is=SW{Io}+SL{Io}+Ia,

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    I=I0eOT=I0·eμ·c·L,

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    I(t0)I(t0+Δτ)I(t0)I(t0+Δτ)1=β|E(t0+Δτ)E*(t0)E(t0+Δτ)E*(t0)|2,

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    C(Δτ)=δI(t0)·δI(t0+Δτ)¯δI(t0)¯·δI(t0+Δτ)¯,

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    C(1)(Δτ)=[L/Lssinh(L/Ls)]2,

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    C(2)(Δτ)=1g1sinh2(L/Ls)[sinh(2L/Ls)2L/Ls1],

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    Ls=Dτe·f(Δτ),

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    f(Δτ)=[eΔτ/(2τb)1eΔτ/(2τb)]1/2,

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    C(Δτ)=a{m/f(n·Δτ)sinh[m/f(n·Δτ)]}2+b1{sinh[m/f(n·Δτ)]}2{sinh[2m/f(n·Δτ)]2m/f(n·Δτ)1}.

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    Rlearn=argminRθ,θΘn=1NL(Io(n),Rθ{Is(n)})+g(θ),

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    MSE=min1WHN1n=1N1(u,v)W,H[Ip(n)(u,v)Io(n)(u,v)]2,

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    RMSE={1WH(u,v)W,H[Ip(u,v)Is(u,v)]2}12,

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    SSIM=(2μIpμIs+c1)(2σIpIs+c2)(μIp2+μIs2+c1)(σIp2+σIs2+c2),

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    Shanshan Zheng, Hao Wang, Shi Dong, Fei Wang, Guohai Situ. Incoherent imaging through highly nonstatic and optically thick turbid media based on neural network[J]. Photonics Research, 2021, 9(5): B220
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