Imaging through scattering media with wide spectral illumination

Xin Wang; Honglin Liu; Shensheng Han

doi:10.1117/12.2574024

10 October 2020 Imaging through scattering media with wide spectral illumination

Xin Wang, Honglin Liu, Shensheng Han

Proceedings Volume 11550, Optoelectronic Imaging and Multimedia Technology VII; 1155007 (2020) https://doi.org/10.1117/12.2574024
Event: SPIE/COS Photonics Asia, 2020, Online Only

Abstract

Speckle autocorrelation based on optical memory effect is an interesting and important method to realize scattering imaging. However, the effective detection range is limited by the radiation phenomenon of the speckle field when there is a wide spectral illumination. In this paper, by utilizing the response of point spread function (PSF) to image distance (the distance between the detector plane and the scattering medium), we propose a method to improve the imaging quality under wide spectral illumination. PSF is sensitive to the image distance, as the distance between the detection plane and reference plane increases, the correlation coefficient between their PSFs will decreases. Superposing the autocorrelations of speckle patterns under different image distances can suppress the statistical noise, and thus improve the reconstruction quality. This method reduces the dependence on light source power and effective detection range, having certain prospect in seeing through natural turbid media.

Conference Presentation

Citation Download Citation

Xin Wang, Honglin Liu, and Shensheng Han "Imaging through scattering media with wide spectral illumination", Proc. SPIE 11550, Optoelectronic Imaging and Multimedia Technology VII, 1155007 (10 October 2020); https://doi.org/10.1117/12.2574024

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