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Related Experiment Video

Updated: Feb 26, 2026

How to Create and Use Binocular Rivalry

How to Create and Use Binocular Rivalry

Published on: November 10, 2010

Glare suppression by coherence gated negation.

Edward Haojiang Zhou¹, Atsushi Shibukawa¹, Joshua Brake¹

¹Electrical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA.

|July 18, 2017

Summary

This summary is machine-generated.

Coherence gated negation (CGN) uses destructive interference to suppress glare, enabling clearer imaging of weak targets obscured by scattering media. This novel method actively gates out unwanted light, outperforming conventional techniques in challenging imaging scenarios.

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Area of Science:

Optics and Photonics
Image Processing
Biomedical Imaging

Background:

Glare significantly confounds imaging of weak targets behind scattering media.
Conventional coherence gating methods can be limited in suppressing unwanted optical contributions.

Purpose of the Study:

To introduce and demonstrate a novel method, coherence gated negation (CGN), for suppressing glare in optical imaging.
To improve the imaging of weak targets obscured by scattering media.

Main Methods:

Developed coherence gated negation (CGN), a technique utilizing destructive optical interference.
Permuted reference beam amplitude and phase values to interfere with glare and target reflections.
Actively "gates out" unwanted optical contributions, unlike conventional methods.

Main Results:

Achieved glare suppression by an order of magnitude, even with highly disordered optical wavefronts.
Demonstrated improved imaging of weak targets behind scattering media.
CGN outperformed conventional coherence gating in specific scenarios due to superior rejection of unwanted light.

Conclusions:

Coherence gated negation (CGN) offers a powerful new approach to overcoming glare in optical imaging.
The CGN method provides enhanced image quality by actively removing interfering light.
This technique has significant potential for applications requiring high-contrast imaging in scattering environments.