• Infrared and Laser Engineering
  • Vol. 51, Issue 2, 20210889 (2022)
Shuo Zhu, Enlai Guo, Lianfa Bai, and Jing Han*
Author Affiliations
  • Jiangsu Key Laboratory of Spectral Imaging & Intelligent Sense, Nanjing University of Science and Technology, Nanjing 210094, China
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    DOI: 10.3788/IRLA20210889 Cite this Article
    Shuo Zhu, Enlai Guo, Lianfa Bai, Jing Han. Efficient learning-based phase retrieval method through unknown scattering media[J]. Infrared and Laser Engineering, 2022, 51(2): 20210889 Copy Citation Text show less
    Statistical characteristics analysis of the different sub-regions of one speckle pattern. (a) Schematic of speckle pre-processing step and selection of different sub-regions; (b) Speckle of four different sub-regions and corresponding power spectrum and reconstruction results; (c) Intensity value corresponding to the dotted line of the normalized power spectrum pattern
    Fig. 1. Statistical characteristics analysis of the different sub-regions of one speckle pattern. (a) Schematic of speckle pre-processing step and selection of different sub-regions; (b) Speckle of four different sub-regions and corresponding power spectrum and reconstruction results; (c) Intensity value corresponding to the dotted line of the normalized power spectrum pattern
    Schematic of the physics-aware learning method for efficient phase retrieval algorithm. (a) Speckle power spectrum pre-processing module; (b) Neural network post-processing module for object recovery
    Fig. 2. Schematic of the physics-aware learning method for efficient phase retrieval algorithm. (a) Speckle power spectrum pre-processing module; (b) Neural network post-processing module for object recovery
    Experimental setup for the scalable imaging
    Fig. 3. Experimental setup for the scalable imaging
    Results comparison without or with physics-prior information for imaging through unknown diffusers
    Fig. 4. Results comparison without or with physics-prior information for imaging through unknown diffusers
    Scalable imaging results of human faces data through different diffusers
    Fig. 5. Scalable imaging results of human faces data through different diffusers
    Results comparison using speckle redundancy theory(Different numbers of sub-region speckles used and every sub-region size have different effect on scalable reconstruction imaging)
    Fig. 6. Results comparison using speckle redundancy theory(Different numbers of sub-region speckles used and every sub-region size have different effect on scalable reconstruction imaging)
    Size of sub-region speckles/pixelNumber of sub-regionMAESSIMPSNR/dB
    256×25610.04970.666720.41
    30.03750.792222.59
    50.01920.913829.14
    70.01570.936131.45
    90.01000.963137.21
    768×76810.03790.726022.89
    30.01740.924730.18
    1 920×120010.03010.810724.96
    Table 1. Reconstruction indicators corresponding to the use of different numbers of sub-region and different sizes of sub-region speckles
    Shuo Zhu, Enlai Guo, Lianfa Bai, Jing Han. Efficient learning-based phase retrieval method through unknown scattering media[J]. Infrared and Laser Engineering, 2022, 51(2): 20210889
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