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Photon-efficient imaging with a single-photon camera
Reconstructing a scene's 3D structure and reflectivity accurately with an active imaging system operating in low-light-level conditions has wide-ranging applications, spanning biological imaging to remote sensing. Here we propose and experimentally demonstrate a depth and reflectivity imaging s...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4931023/ https://www.ncbi.nlm.nih.gov/pubmed/27338821 http://dx.doi.org/10.1038/ncomms12046 |
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author | Shin, Dongeek Xu, Feihu Venkatraman, Dheera Lussana, Rudi Villa, Federica Zappa, Franco Goyal, Vivek K. Wong, Franco N. C. Shapiro, Jeffrey H. |
author_facet | Shin, Dongeek Xu, Feihu Venkatraman, Dheera Lussana, Rudi Villa, Federica Zappa, Franco Goyal, Vivek K. Wong, Franco N. C. Shapiro, Jeffrey H. |
author_sort | Shin, Dongeek |
collection | PubMed |
description | Reconstructing a scene's 3D structure and reflectivity accurately with an active imaging system operating in low-light-level conditions has wide-ranging applications, spanning biological imaging to remote sensing. Here we propose and experimentally demonstrate a depth and reflectivity imaging system with a single-photon camera that generates high-quality images from ∼1 detected signal photon per pixel. Previous achievements of similar photon efficiency have been with conventional raster-scanning data collection using single-pixel photon counters capable of ∼10-ps time tagging. In contrast, our camera's detector array requires highly parallelized time-to-digital conversions with photon time-tagging accuracy limited to ∼ns. Thus, we develop an array-specific algorithm that converts coarsely time-binned photon detections to highly accurate scene depth and reflectivity by exploiting both the transverse smoothness and longitudinal sparsity of natural scenes. By overcoming the coarse time resolution of the array, our framework uniquely achieves high photon efficiency in a relatively short acquisition time. |
format | Online Article Text |
id | pubmed-4931023 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-49310232016-07-12 Photon-efficient imaging with a single-photon camera Shin, Dongeek Xu, Feihu Venkatraman, Dheera Lussana, Rudi Villa, Federica Zappa, Franco Goyal, Vivek K. Wong, Franco N. C. Shapiro, Jeffrey H. Nat Commun Article Reconstructing a scene's 3D structure and reflectivity accurately with an active imaging system operating in low-light-level conditions has wide-ranging applications, spanning biological imaging to remote sensing. Here we propose and experimentally demonstrate a depth and reflectivity imaging system with a single-photon camera that generates high-quality images from ∼1 detected signal photon per pixel. Previous achievements of similar photon efficiency have been with conventional raster-scanning data collection using single-pixel photon counters capable of ∼10-ps time tagging. In contrast, our camera's detector array requires highly parallelized time-to-digital conversions with photon time-tagging accuracy limited to ∼ns. Thus, we develop an array-specific algorithm that converts coarsely time-binned photon detections to highly accurate scene depth and reflectivity by exploiting both the transverse smoothness and longitudinal sparsity of natural scenes. By overcoming the coarse time resolution of the array, our framework uniquely achieves high photon efficiency in a relatively short acquisition time. Nature Publishing Group 2016-06-24 /pmc/articles/PMC4931023/ /pubmed/27338821 http://dx.doi.org/10.1038/ncomms12046 Text en Copyright © 2016, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Shin, Dongeek Xu, Feihu Venkatraman, Dheera Lussana, Rudi Villa, Federica Zappa, Franco Goyal, Vivek K. Wong, Franco N. C. Shapiro, Jeffrey H. Photon-efficient imaging with a single-photon camera |
title | Photon-efficient imaging with a single-photon camera |
title_full | Photon-efficient imaging with a single-photon camera |
title_fullStr | Photon-efficient imaging with a single-photon camera |
title_full_unstemmed | Photon-efficient imaging with a single-photon camera |
title_short | Photon-efficient imaging with a single-photon camera |
title_sort | photon-efficient imaging with a single-photon camera |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4931023/ https://www.ncbi.nlm.nih.gov/pubmed/27338821 http://dx.doi.org/10.1038/ncomms12046 |
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