Imaging dynamic objects hidden behind scattering medium by retrieving the point spread function

Dajiang Lu; Meihua Liao; Wenqi He; Zewei Cai; Xiang Peng

doi:10.1117/12.2319734

7 September 2018 Imaging dynamic objects hidden behind scattering medium by retrieving the point spread function

Dajiang Lu, Meihua Liao, Wenqi He, Zewei Cai, Xiang Peng

Proceedings Volume 10834, Speckle 2018: VII International Conference on Speckle Metrology; 1083428 (2018) https://doi.org/10.1117/12.2319734
Event: SPECKLE 2018: VII International Conference on Speckle Metrology, 2018, Janów Podlaski, Poland

Abstract

We address a non-invasive imaging method to observe dynamic objects hidden behind a turbid medium. An initial image of the objects is first recovered by speckle correlation technique (SCT) with a single shot speckle pattern. The scattered point spread function (PSF) is then extracted by taking a deconvolution process between the initial image and its corresponding speckle pattern. Consequently, the images of the dynamic objects, within the optical memory effect (OME) range, can then be reconstructed directly with the same deconvolution process between the sequential speckle patterns and the estimated PSF. In addition, a further calibration operation is employed to enhance the robustness of the PSF, ensuring sharp images can still be observed when objects are close to or even cross the edge of OME. Experimental demonstration is presented to verify the feasibility of our proposed method.

Citation Download Citation

Dajiang Lu, Meihua Liao, Wenqi He, Zewei Cai, and Xiang Peng "Imaging dynamic objects hidden behind scattering medium by retrieving the point spread function", Proc. SPIE 10834, Speckle 2018: VII International Conference on Speckle Metrology, 1083428 (7 September 2018); https://doi.org/10.1117/12.2319734

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