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Home
Non-line-of-sight Single-pixel Imaging Using Polarization Speckle Modulation.

Home
Non-line-of-sight Single-pixel Imaging Using Polarization Speckle Modulation.

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Non-Line-of-Sight Single-Pixel Imaging Using Polarization Speckle Modulation.

Yijun Zhou^1,2, Wenwen Li^1,2,3, Wei Li^1,2

¹University of Science and Technology of China, Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, Hefei 230026, China.

Physical Review Letters

|April 25, 2026

View abstract on PubMed

Summary

This summary is machine-generated.

This study introduces polarization-based scanning-free non-line-of-sight (NLOS) imaging. It uses light polarization to illuminate hidden scenes via a relay wall, enabling high-fidelity imaging without scanning.

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Area of Science:

Optics and Photonics
Computational Imaging

Background:

Non-line-of-sight (NLOS) imaging recovers scenes hidden from direct view.
Current NLOS methods are limited by manipulating temporal or spatial light properties.

Purpose of the Study:

To develop a novel scanning-free NLOS imaging technique using polarization.
To demonstrate high-fidelity imaging through a keyhole using polarization speckles.

Main Methods:

Utilizing polarization states of light incident on a relay wall to generate diverse speckle patterns.
Employing a single-pixel detector to capture reflected light from hidden scenes.
Developing a noninvasive calibration method using the angular memory effect of polarization speckles.

Main Results:

Demonstrated successful scanning-free NLOS imaging by encoding hidden scenes with polarization speckle diversity.
Achieved high-fidelity imaging with millimeter spatial resolution through a keyhole.
Validated a noninvasive calibration technique for polarization speckle imaging.

Conclusions:

Polarization-based speckle diversity offers a new approach for scanning-free NLOS imaging.
This method enhances optical imaging capabilities and opens avenues for practical applications.
The findings provide insights into light field modulation for advanced optical imaging systems.