# Color imaging through the scattering media based on phase retrieval with triple correlation

## TL;DR

This paper introduces a novel phase retrieval method using triple correlation for color imaging through scattering media, enabling simpler, orientation-preserving, and potentially spectral imaging without complex measurements.

## Contribution

It proves the effectiveness of triple correlation for phase retrieval in scattering media and demonstrates its application in color imaging, simplifying existing methods.

## Key findings

- Successfully retrieves Fourier phase of objects through scattering media.
- Retains object orientation information during phase retrieval.
- Enables composite color imaging without rotation operations.

## Abstract

Light passing through scattering media will be strongly scattered and diffused into complex speckle pattern, which however contains almost all the spatial information and color information of the objects. Although various technologies have been proposed to realize color imaging through the scattering media, current technologies are still complex with long sequence of measurement for each imaging pixel or spectral point spread functions of optical system. Here we theoretically prove the spatial averaging of triple correlation technique can be used to retrieve the Fourier phase of object, and experimentally demonstrate it can be applied in color imaging through scattering media. Compared to other phase retrieval techniques, the phase retrieval with triple correlation technique can retain the orientation information of objects, and can composite color image without rotation operation. Furthermore, our approach has the potential of realizing spectral imaging through scattering media.

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Source: https://tomesphere.com/paper/1902.00379