Transmissive Imaging Through Scattering Media Based on Multi-Wavelength Illumination

Xin, 王歆 Wang; Honglin, 刘红林 Liu; Chenyu, 胡晨昱 Hu; Pengwei, 王鹏威 Wang; Shensheng, 韩申生 Han

doi:10.3788/aos202040.1611002

Cited by 4 publications

(2 citation statements)

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“…The axial shift within a bi-directional detection will deteriorate image quality and accumulate more error in position and size estimation. However, all these factors can be improved by multiple bi-directional detections [22,32].…”

Section: Discussionmentioning

confidence: 99%

Imaging and positioning through scattering media noninvasively by bi-directional exposure

Wang¹,

Hu²,

Liu³

et al. 2021

J. Opt.

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Speckle autocorrelation is a popular method for imaging through scattering media. Currently, most proposed methods in literature can only recognize the pattern and the relative movement ratio of a hidden object. Position and size quantification, the other content of imaging, is just as important as object recognition. Here, we propose a non-invasive method to estimate the axial position and size of a hidden object based on speckle autocorrelation imaging. A unique geometry setup for bi-directional exposure is applied to extract the position and size information. The image of the object can be reconstructed from the recorded speckle pattern via phase retrieval techniques. According to the geometry relationship, we calculate the size and axial position of the object, and further, obtain the lateral or axial displacements when the object is shifted in both simulation and experiment. This method opens a door for noninvasive imaging and positioning through scattering media, will impact the fields of biomedical imaging, object tracking, etc.

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Section: Discussionmentioning

confidence: 99%

Imaging and positioning through scattering media noninvasively by bi-directional exposure

Wang¹,

Hu²,

Liu³

et al. 2021

J. Opt.

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“…The phase retrieval algorithm based on the TIE discussed in the previous section is only applicable to single wavelength conditions. In more complex situations, such as multiwavelength illumination, 17 the method described above is not applicable. The MW-TIE algorithm is divided into two modules: a phase reconstruction module and a phase noise reduction module.…”

Section: Phase Retrieval In Multiwavelength Light Fieldsmentioning

confidence: 99%

Binocular phase retrieval based on the transport of intensity equation under multiwavelength illumination

Chen

Zhang

et al. 2022

Opt. Eng.

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In view of the limitation that the transport of intensity equation method can only be used at a single wavelength, we propose a binocular phase retrieval algorithm based on multiwavelength illumination. First, we solve for the corresponding single-phase results at different wavelengths and then calculate the surface height of the object by combining the obtained synthetic wavelengths and synthetic phases, in order to reconstruct the initial phase results at different wavelengths. To solve the problem of amplification of traditional noise and surface profile noise in the phase diagram in the phase synthesis step, we introduce a step-by-step noise reduction method that can reduce the noise in the initial phase results to the level for a single wavelength and finally obtain the corresponding high-precision phase results at different wavelengths. The intensity images collected by the proposed dual-microscope system verify the correctness and effectiveness of the algorithm.

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基于散斑相关的宽视场成像技术研究进展（特邀）

Teli¹,

Yuzhi²,

Ruoyu³

et al. 2022

红外与激光工程

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Transmissive Imaging Through Scattering Media Based on Multi-Wavelength Illumination

Cited by 4 publications

References 0 publications

Imaging and positioning through scattering media noninvasively by bi-directional exposure

Imaging and positioning through scattering media noninvasively by bi-directional exposure

Binocular phase retrieval based on the transport of intensity equation under multiwavelength illumination

基于散斑相关的宽视场成像技术研究进展（特邀）

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