Work

Imaging through scattering media under strong background illumination based on symmetrized speckles

Year: 2025

Type: article

Abstract: Imaging through scattering media is vital for biomedical and astronomical applications. While memory-effect-based methods, including speckle correlation and speckle deconvolution, are characterized by their simplicity and convenience, strong background illumination often degrades reconstruction. We propose a symmetrized speckle method based on the frequency-domain characteristics of symmetrical speckle patterns via flipping and stitching speckles. Experimental validations were conducted on both transmissive and reflective objects under background illumination from various directions. For a white light illumination scene, we additionally propose and demonstrate a blind-deconvolution modified symmetrized speckles method to solve the chromatic dispersion problem. Compared to existing techniques, our approach achieves superior reconstruction quality under diverse illumination, demonstrating unique advantages for scattering imaging.

Source: Optics Express

DOI: 10.1364/oe.576979

Authors: Yufan Zhang, Yaoyao Shi, Kaixin Wang, Liang Yan, Chuanjie Hu, Youwen Liu

Language: English

Topic: Random lasers and scattering media

Subfield: Acoustics and Ultrasonics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: National Natural Science Foundation of China, Natural Science Foundation of Jiangsu Province

Awards: G1598120800, G323053844, G6888147974, G8610978583