{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,14]],"date-time":"2026-02-14T20:48:53Z","timestamp":1771102133316,"version":"3.50.1"},"reference-count":39,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2022,5,17]],"date-time":"2022-05-17T00:00:00Z","timestamp":1652745600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004826","name":"the Beijing Natural Science Foundation","doi-asserted-by":"publisher","award":["4222016"],"award-info":[{"award-number":["4222016"]}],"id":[{"id":"10.13039\/501100004826","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004826","name":"the Beijing Natural Science Foundation","doi-asserted-by":"publisher","award":["D040301"],"award-info":[{"award-number":["D040301"]}],"id":[{"id":"10.13039\/501100004826","id-type":"DOI","asserted-by":"publisher"}]},{"name":"the Civil Space Project of China","award":["4222016"],"award-info":[{"award-number":["4222016"]}]},{"name":"the Civil Space Project of China","award":["D040301"],"award-info":[{"award-number":["D040301"]}]},{"name":"the Youth Talent Promotion Project of the Beijing Association for Science and Technology","award":["4222016"],"award-info":[{"award-number":["4222016"]}]},{"name":"the Youth Talent Promotion Project of the Beijing Association for Science and Technology","award":["D040301"],"award-info":[{"award-number":["D040301"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>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.<\/jats:p>","DOI":"10.3390\/s22103801","type":"journal-article","created":{"date-parts":[[2022,5,17]],"date-time":"2022-05-17T08:34:29Z","timestamp":1652776469000},"page":"3801","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Secondary Complementary Balancing Compressive Imaging with a Free-Space Balanced Amplified Photodetector"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9481-2389","authenticated-orcid":false,"given":"Wen-Kai","family":"Yu","sequence":"first","affiliation":[{"name":"Center for Quantum Technology Research, School of Physics, Beijing Institute of Technology, Beijing 100081, China"},{"name":"Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement of Ministry of Education, School of Physics, Beijing Institute of Technology, Beijing 100081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ying","family":"Yang","sequence":"additional","affiliation":[{"name":"Center for Quantum Technology Research, School of Physics, Beijing Institute of Technology, Beijing 100081, China"},{"name":"Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement of Ministry of Education, School of Physics, Beijing Institute of Technology, Beijing 100081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jin-Rui","family":"Liu","sequence":"additional","affiliation":[{"name":"Center for Quantum Technology Research, School of Physics, Beijing Institute of Technology, Beijing 100081, China"},{"name":"Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement of Ministry of Education, School of Physics, Beijing Institute of Technology, Beijing 100081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ning","family":"Wei","sequence":"additional","affiliation":[{"name":"Center for Quantum Technology Research, School of Physics, Beijing Institute of Technology, Beijing 100081, China"},{"name":"Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement of Ministry of Education, School of Physics, Beijing Institute of Technology, Beijing 100081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shuo-Fei","family":"Wang","sequence":"additional","affiliation":[{"name":"Center for Quantum Technology Research, School of Physics, Beijing Institute of Technology, Beijing 100081, China"},{"name":"Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement of Ministry of Education, School of Physics, Beijing Institute of Technology, Beijing 100081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"83","DOI":"10.1109\/MSP.2007.914730","article-title":"Single-pixel imaging via compressive sampling","volume":"25","author":"Duarte","year":"2008","journal-title":"IEEE Sig. 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