Imaging objects through scattering layers and around corners by retrieval of the scattered point spread function

TL;DR

This paper introduces a fast technique to image objects hidden behind scattering layers or around corners by retrieving the scatterer's point spread function using a known reference, enabling clear imaging of dynamic scenes.

Contribution

The method uniquely uses a reference object to extract the scatterer's point spread function from a dynamic scene, allowing high-speed imaging through scattering media and around corners.

Findings

Successfully reconstructs sharp images through diffusers and rough surfaces.

Operates in real-time with single shot data.

Robust imaging of dynamic scenes demonstrated.

Abstract

We demonstrate a high-speed method to image objects through a thin scattering medium and around a corner. The method employs a reference object of known shape to retrieve the speckle-like point spread function of the scatterer. We extract the point spread function of the scatterer from a dynamic scene that includes a static reference object, and use this to image the dynamic objects. Sharp images are reconstructed from the transmission through a diffuser and from reflection off a rough surface. The sharp and clean reconstructed images from single shot data exemplify the robustness of the method.