• Chinese Optics Letters
  • Vol. 21, Issue 5, 051101 (2023)
Axin Fan1、2, Tingfa Xu1、2、*, Geer Teng1、3, Xi Wang4, Chang Xu1, Yuhan Zhang1、2, Xin Xu1、2, and Jianan Li1、**
Author Affiliations
  • 1Key Laboratory of Photoelectronic Imaging Technology and System of Ministry of Education of China, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
  • 2Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401151, China
  • 3Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, UK
  • 4School of Printing & Packaging Engineering, Beijing Institute of Graphic Communication, Beijing 102600, China
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    DOI: 10.3788/COL202321.051101 Cite this Article Set citation alerts
    Axin Fan, Tingfa Xu, Geer Teng, Xi Wang, Chang Xu, Yuhan Zhang, Xin Xu, Jianan Li. Deep learning reconstruction enables full-Stokes single compression in polarized hyperspectral imaging[J]. Chinese Optics Letters, 2023, 21(5): 051101 Copy Citation Text show less

    Abstract

    Polarized hyperspectral imaging, which has been widely studied worldwide, can obtain four-dimensional data including polarization, spectral, and spatial domains. To simplify data acquisition, compressive sensing theory is utilized in each domain. The polarization information represented by the four Stokes parameters currently requires at least two compressions. This work achieves full-Stokes single compression by introducing deep learning reconstruction. The four Stokes parameters are modulated by a quarter-wave plate (QWP) and a liquid crystal tunable filter (LCTF) and then compressed into a single light intensity detected by a complementary metal oxide semiconductor (CMOS). Data processing involves model training and polarization reconstruction. The reconstruction model is trained by feeding the known Stokes parameters and their single compressions into a deep learning framework. Unknown Stokes parameters can be reconstructed from a single compression using the trained model. Benefiting from the acquisition simplicity and reconstruction efficiency, this work well facilitates the development and application of polarized hyperspectral imaging.
    MQ=[10000cos2(2θ)cos(2θ)sin(2θ)sin(2θ)0cos(2θ)sin(2θ)sin2(2θ)cos(2θ)0sin(2θ)cos(2θ)0],

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    MLC=12[1cos(2β)sin(2β)0cos(2β)cos2(2β)cos(2β)sin(2β)0sin(2β)cos(2β)sin(2β)sin2(2β)00000],

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    Mθ,β=MLC×MQ=12[1cos(2β)cos2(2θ)+sin(2β)cos(2θ)sin(2θ)cos(2β)cos2(2β)cos2(2θ)cos(2β)sin(2β)cos(2θ)sin(2θ)sin(2β)cos(2β)sin(2β)cos2(2θ)sin2(2β)cos(2θ)sin(2θ)00cos(2β)cos(2θ)sin(2θ)+sin(2β)sin2(2θ)cos2(2β)cos(2θ)sin(2θ)cos(2β)sin(2β)sin2(2θ)cos(2β)sin(2β)cos(2θ)sin(2θ)sin2(2β)sin2(2θ)0cos(2β)sin(2θ)+sin(2β)cos(2θ)cos2(2β)sin(2θ)cos(2β)sin(2β)cos(2θ)cos(2β)sin(2β)sin(2θ)sin2(2β)cos(2θ)0].

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    MLP=12[1cos(2α)sin(2α)0cos(2α)cos2(2α)cos(2α)sin(2α)0sin(2α)cos(2α)sin(2α)sin2(2α)00000].

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    Mθ,α=MLP×MQ=12[1cos(2α)cos2(2θ)+sin(2α)cos(2θ)sin(2θ)cos(2α)cos2(2α)cos2(2θ)+cos(2α)sin(2α)cos(2θ)sin(2θ)sin(2α)cos(2α)sin(2α)cos2(2θ)+sin2(2α)cos(2θ)sin(2θ)00cos(2α)cos(2θ)sin(2θ)+sin(2α)sin2(2θ)cos2(2α)cos(2θ)sin(2θ)+cos(2α)sin(2α)sin2(2θ)cos(2α)sin(2α)cos(2θ)sin(2θ)+sin2(2α)sin2(2θ)0cos(2α)sin(2θ)+sin(2α)cos(2θ)cos2(2α)sin(2θ)+cos(2α)sin(2α)cos(2θ)cos(2α)sin(2α)sin(2θ)+sin2(2α)cos(2θ)0].

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    S0=I0°+I90°,

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    S1=2(I22.5°I67.5°)2S3,

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    S2=2I45°S0,

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    S3=I0°I90°.

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    Axin Fan, Tingfa Xu, Geer Teng, Xi Wang, Chang Xu, Yuhan Zhang, Xin Xu, Jianan Li. Deep learning reconstruction enables full-Stokes single compression in polarized hyperspectral imaging[J]. Chinese Optics Letters, 2023, 21(5): 051101
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