Robust and efficient single-pixel image classification with nonlinear optics

Santosh Kumar, Ting Bu, He Zhang, Irwin Huang, Yuping Huang

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We present a hybrid image classifier by feature-sensitive image upconversion, single pixel photodetection, and deep learning, aiming at fast processing of high-resolution images. It uses partial Fourier transform to extract the images' signature features in both the original and Fourier domains, thereby significantly increasing the classification accuracy and robustness. Tested on the Modified National Institute of Standards and Technology handwritten digit images and verified by simulation, it boosts accuracy from 81.25% (by Fourier-domain processing) to 99.23%, and achieves 83% accuracy for highly contaminated images whose signal-to-noise ratio is only 17 dB. Our approach could prove useful for fast lidar data processing, high-resolution image recognition, occluded target identification, and atmosphere monitoring.

Original languageEnglish
Pages (from-to)1848-1851
Number of pages4
JournalOptics Letters
Volume46
Issue number8
DOIs
StatePublished - 15 Apr 2021

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