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A Methodology for Capturing Joint Visual Attention Using Mobile Eye-Trackers

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Published on: January 18, 2020

Privacy-Aware Meta-Optics for Person Detection.

Zaid Tasneem¹, Yongyi Zhao¹, Johannes E Fröch²

¹Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States.

ACS Photonics

|April 6, 2026

Summary

This study introduces privacy-aware meta-optics (MOs) that optically filter identity information, enabling person detection while preserving privacy. This computational camera offers a superior privacy-utility balance for computer vision applications.

Keywords:

meta-optics optical privacy person detection privacy-aware computer vision

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Area of Science:

Optics
Computer Vision
Computational Imaging

Background:

Growing privacy concerns due to widespread computer vision use.
Need for methods that balance data utility with personal privacy.

Purpose of the Study:

To develop a computational camera that optically filters private attributes like identity.
To enable downstream vision tasks such as person detection while enhancing privacy.

Main Methods:

Replacing traditional lenses with broadband meta-optics (MOs).
End-to-end optimization of MO parameters using differentiable look-up tables and neural networks.
Implementing a novel private Strehl integral regularization for privacy preservation.

Main Results:

Experimental validation of privacy-aware meta-optics.
Demonstrated superior privacy-utility trade-off compared to existing techniques.
Successful filtering of high-frequency facial identity information while preserving low-frequency details.

Conclusions:

The first demonstration of privacy-aware broadband meta-optics for person detection.
A computationally inexpensive and effective method for enhancing privacy in computer vision.
Significant potential for applications requiring both surveillance and privacy protection.