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Secondary Complementary Balancing Compressive Imaging with a Free-Space Balanced Amplified Photodetector

Single-pixel imaging (SPI) has attracted widespread attention because it generally uses a non-pixelated photodetector and a digital micromirror device (DMD) to acquire the object image. Since the modulated patterns seen from two reflection directions of the DMD are naturally complementary, one can a...

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Autores principales: Yu, Wen-Kai, Yang, Ying, Liu, Jin-Rui, Wei, Ning, Wang, Shuo-Fei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9145733/
https://www.ncbi.nlm.nih.gov/pubmed/35632209
http://dx.doi.org/10.3390/s22103801
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author Yu, Wen-Kai
Yang, Ying
Liu, Jin-Rui
Wei, Ning
Wang, Shuo-Fei
author_facet Yu, Wen-Kai
Yang, Ying
Liu, Jin-Rui
Wei, Ning
Wang, Shuo-Fei
author_sort Yu, Wen-Kai
collection PubMed
description Single-pixel imaging (SPI) has attracted widespread attention because it generally uses a non-pixelated photodetector and a digital micromirror device (DMD) to acquire the object image. Since the modulated patterns seen from two reflection directions of the DMD are naturally complementary, one can apply complementary balanced measurements to greatly improve the measurement signal-to-noise ratio and reconstruction quality. However, the balance between two reflection arms significantly determines the quality of differential measurements. In this work, we propose and demonstrate a simple secondary complementary balancing mechanism to minimize the impact of the imbalance on the imaging system. In our SPI setup, we used a silicon free-space balanced amplified photodetector with 5 mm active diameter which could directly output the difference between two optical input signals in two reflection arms. Both simulation and experimental results have demonstrated that the use of secondary complementary balancing can result in a better cancellation of direct current components of measurements, and can acquire an image quality slightly better than that of single-arm single-pixel complementary measurement scheme (which is free from the trouble of optical imbalance) and over 20 times better than that of double-arm dual-pixel complementary measurement scheme under optical imbalance conditions.
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spelling pubmed-91457332022-05-29 Secondary Complementary Balancing Compressive Imaging with a Free-Space Balanced Amplified Photodetector Yu, Wen-Kai Yang, Ying Liu, Jin-Rui Wei, Ning Wang, Shuo-Fei Sensors (Basel) Article Single-pixel imaging (SPI) has attracted widespread attention because it generally uses a non-pixelated photodetector and a digital micromirror device (DMD) to acquire the object image. Since the modulated patterns seen from two reflection directions of the DMD are naturally complementary, one can apply complementary balanced measurements to greatly improve the measurement signal-to-noise ratio and reconstruction quality. However, the balance between two reflection arms significantly determines the quality of differential measurements. In this work, we propose and demonstrate a simple secondary complementary balancing mechanism to minimize the impact of the imbalance on the imaging system. In our SPI setup, we used a silicon free-space balanced amplified photodetector with 5 mm active diameter which could directly output the difference between two optical input signals in two reflection arms. Both simulation and experimental results have demonstrated that the use of secondary complementary balancing can result in a better cancellation of direct current components of measurements, and can acquire an image quality slightly better than that of single-arm single-pixel complementary measurement scheme (which is free from the trouble of optical imbalance) and over 20 times better than that of double-arm dual-pixel complementary measurement scheme under optical imbalance conditions. MDPI 2022-05-17 /pmc/articles/PMC9145733/ /pubmed/35632209 http://dx.doi.org/10.3390/s22103801 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yu, Wen-Kai
Yang, Ying
Liu, Jin-Rui
Wei, Ning
Wang, Shuo-Fei
Secondary Complementary Balancing Compressive Imaging with a Free-Space Balanced Amplified Photodetector
title Secondary Complementary Balancing Compressive Imaging with a Free-Space Balanced Amplified Photodetector
title_full Secondary Complementary Balancing Compressive Imaging with a Free-Space Balanced Amplified Photodetector
title_fullStr Secondary Complementary Balancing Compressive Imaging with a Free-Space Balanced Amplified Photodetector
title_full_unstemmed Secondary Complementary Balancing Compressive Imaging with a Free-Space Balanced Amplified Photodetector
title_short Secondary Complementary Balancing Compressive Imaging with a Free-Space Balanced Amplified Photodetector
title_sort secondary complementary balancing compressive imaging with a free-space balanced amplified photodetector
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9145733/
https://www.ncbi.nlm.nih.gov/pubmed/35632209
http://dx.doi.org/10.3390/s22103801
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