Multi-exposure color imaging with stacked thin-film luminescent concentrators

Optics Express
Alexander Koppelhuber, Oliver Bimber

Abstract

We present a fully transparent, scalable, and flexible color image sensor that consists of stacked thin-film luminescent concentrators (LCs). At each layer, it measures a Radon transform of the corresponding LC's spectral responses. Color images are then reconstructed through inverse Radon transforms that are obtained using machine learning. A high sampling rate in Radon space allows encoding multiple exposures to cope with under- and overexposed cases in one recording. Thus, our sensor simultaneously measures multiple spectral responses in different LC layers and multiple exposures in different Radon coefficients per layer. We also show that machine learning enables adequate three-channel image reconstruction from the response of only two LC layers.

References

Apr 1, 1992·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·D J TolhurstT Chao
Sep 21, 2004·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Zhou WangEero P Simoncelli
Apr 17, 2006·Optics Express·Dietmar KnippJackson Ho
Dec 29, 2011·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Amir Kolaman, Orly Yadid-Pecht
Jul 18, 2012·Nano Letters·Sozo YokogawaHarry A Atwater
Oct 9, 2013·Scientific Reports·Beibei ZengFilbert J Bartoli
May 3, 2014·Optics Express·Alexander KoppelhuberOliver Bimber
Jan 13, 2015·Scientific Reports·Seon-Jeong LimSangyoon Lee
Jan 22, 2015·Optics Express·Alexander KoppelhuberOliver Bimber
May 15, 2015·Optics Express·Alexander Koppelhuber, Oliver Bimber

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Citations

Mar 10, 2018·Optics Express·Alexander Koppelhuber, Oliver Bimber
Oct 19, 2017·Optics Express·Alexander Koppelhuber, Oliver Bimber

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