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Incoherent digital holograms acquired by interferenceless coded aperture correlation holography system without refractive lenses
We present a lensless, interferenceless incoherent digital holography technique based on the principle of coded aperture correlation holography. The acquired digital hologram by this technique contains a three-dimensional image of some observed scene. Light diffracted by a point object (pinhole) is...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5599627/ https://www.ncbi.nlm.nih.gov/pubmed/28912489 http://dx.doi.org/10.1038/s41598-017-11731-x |
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author | Kumar, Manoj Vijayakumar, A. Rosen, Joseph |
author_facet | Kumar, Manoj Vijayakumar, A. Rosen, Joseph |
author_sort | Kumar, Manoj |
collection | PubMed |
description | We present a lensless, interferenceless incoherent digital holography technique based on the principle of coded aperture correlation holography. The acquired digital hologram by this technique contains a three-dimensional image of some observed scene. Light diffracted by a point object (pinhole) is modulated using a random-like coded phase mask (CPM) and the intensity pattern is recorded and composed as a point spread hologram (PSH). A library of PSHs is created using the same CPM by moving the pinhole to all possible axial locations. Intensity diffracted through the same CPM from an object placed within the axial limits of the PSH library is recorded by a digital camera. The recorded intensity this time is composed as the object hologram. The image of the object at any axial plane is reconstructed by cross-correlating the object hologram with the corresponding component of the PSH library. The reconstruction noise attached to the image is suppressed by various methods. The reconstruction results of multiplane and thick objects by this technique are compared with regular lens-based imaging. |
format | Online Article Text |
id | pubmed-5599627 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-55996272017-09-15 Incoherent digital holograms acquired by interferenceless coded aperture correlation holography system without refractive lenses Kumar, Manoj Vijayakumar, A. Rosen, Joseph Sci Rep Article We present a lensless, interferenceless incoherent digital holography technique based on the principle of coded aperture correlation holography. The acquired digital hologram by this technique contains a three-dimensional image of some observed scene. Light diffracted by a point object (pinhole) is modulated using a random-like coded phase mask (CPM) and the intensity pattern is recorded and composed as a point spread hologram (PSH). A library of PSHs is created using the same CPM by moving the pinhole to all possible axial locations. Intensity diffracted through the same CPM from an object placed within the axial limits of the PSH library is recorded by a digital camera. The recorded intensity this time is composed as the object hologram. The image of the object at any axial plane is reconstructed by cross-correlating the object hologram with the corresponding component of the PSH library. The reconstruction noise attached to the image is suppressed by various methods. The reconstruction results of multiplane and thick objects by this technique are compared with regular lens-based imaging. Nature Publishing Group UK 2017-09-14 /pmc/articles/PMC5599627/ /pubmed/28912489 http://dx.doi.org/10.1038/s41598-017-11731-x Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Kumar, Manoj Vijayakumar, A. Rosen, Joseph Incoherent digital holograms acquired by interferenceless coded aperture correlation holography system without refractive lenses |
title | Incoherent digital holograms acquired by interferenceless coded aperture correlation holography system without refractive lenses |
title_full | Incoherent digital holograms acquired by interferenceless coded aperture correlation holography system without refractive lenses |
title_fullStr | Incoherent digital holograms acquired by interferenceless coded aperture correlation holography system without refractive lenses |
title_full_unstemmed | Incoherent digital holograms acquired by interferenceless coded aperture correlation holography system without refractive lenses |
title_short | Incoherent digital holograms acquired by interferenceless coded aperture correlation holography system without refractive lenses |
title_sort | incoherent digital holograms acquired by interferenceless coded aperture correlation holography system without refractive lenses |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5599627/ https://www.ncbi.nlm.nih.gov/pubmed/28912489 http://dx.doi.org/10.1038/s41598-017-11731-x |
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