Abstract

Accessing the point-spread function (PSF) of a complex optical system is important for a variety of imaging applications. However, placing an invasive point source is often impractical, and estimating it blindly with multiple frames is slow and requires a complex nonlinear optimization. Here, we introduce a simple single-shot method to noninvasively recover the accurate PSF of an isoplanatic imaging system, in the context of multiple light scattering. Our approach is based on the reconstruction of any unknown sparse hidden object using the autocorrelation imaging technique, followed by a deconvolution with a blur kernel derived from the statistics of a speckle pattern. A deconvolution on the camera image then retrieves the accurate PSF of the system, enabling further imaging applications. We demonstrate numerically and experimentally the effectiveness of this approach compared to previous deconvolution techniques.

© 2020 Optical Society of America

Imaging through scattering layers exceeding memory effect range with spatial-correlation-achieved point-spread-function

Long Li, Quan Li, Shuai Sun, Hui-Zu Lin, Wei-Tao Liu, and Ping-Xing Chen
Opt. Lett. 43(8) 1670-1673 (2018)

Prior-information-free single-shot scattering imaging beyond the memory effect

Xiaoyu Wang, Xin Jin, Junqi Li, Xiaocong Lian, Xiangyang Ji, and Qionghai Dai
Opt. Lett. 44(6) 1423-1426 (2019)

Non-invasive imaging through scattering medium and around corners beyond 3D memory effect

YingJie Shi, EnLai Guo, Ming Sun, LianFa Bai, and Jing Han
Opt. Lett. 47(17) 4363-4366 (2022)

Non-invasive optical imaging using the extension of the Fourier–domain shower–curtain effect

Xiangsheng Xie, Qiangzhi He, Yikun Liu, Haowen Liang, and JianYing Zhou
Opt. Lett. 46(1) 98-101 (2021)

Multitarget imaging through scattering media beyond the 3D optical memory effect

Wei Li, Jietao Liu, Shunfu He, Lixian Liu, and Xiaopeng Shao
Opt. Lett. 45(10) 2692-2695 (2020)