Imaging through scattering media by exploiting the optical memory effect: a tutorial

TL;DR

This tutorial explains how to use the optical memory effect and correlations from multiple scattering to enable non-invasive imaging through turbid media, highlighting practical experimental considerations.

Contribution

It provides a comprehensive overview of exploiting the optical memory effect for imaging through scattering media, emphasizing practical implementation details.

Findings

Correlations from multiple scattering enable imaging through opaque media.

The optical memory effect can be exploited for non-invasive imaging.

Practical methods for implementing such imaging techniques are discussed.

Abstract

Scattering, especially multiple scattering, is a well known problem in imaging, ranging from astronomy to medicine. In particular it is often desirable to be able to perform non-invasive imaging through turbid and/or opaque media. Many different approaches have been proposed and tested through the years, each with their own advantages, disadvantages, and specific situations in which they work. In this tutorial we will show how knowledge of the correlations arising from the multiple scattering of light allows for non-invasive imaging through a strongly scattering layer, with particular attention on the practicalities of how to make such an experiment work.