Lensless Multispectral Camera Based on a Coded Aperture Array

Multispectral imaging can be applied to water quality monitoring, medical diagnosis, and other applications, but the principle of multispectral imaging is different from the principle of hyper-spectral imaging. Multispectral imaging is generally achieved through filters, so multiple photos are requi...

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Autores principales:	Jianwei Wang, Yan Zhao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	multispectral imaging lensless imaging code aperture Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/1c9003f302d7467cb0271eb0144bef33
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spelling	oai:doaj.org-article:1c9003f302d7467cb0271eb0144bef332021-11-25T18:59:04ZLensless Multispectral Camera Based on a Coded Aperture Array10.3390/s212277571424-8220https://doaj.org/article/1c9003f302d7467cb0271eb0144bef332021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/22/7757https://doaj.org/toc/1424-8220Multispectral imaging can be applied to water quality monitoring, medical diagnosis, and other applications, but the principle of multispectral imaging is different from the principle of hyper-spectral imaging. Multispectral imaging is generally achieved through filters, so multiple photos are required to obtain spectral information. Using multiple detectors to take pictures at the same time increases the complexity and cost of the system. This paper proposes a simple multispectral camera based on lensless imaging, which does not require multiple lenses. The core of the system is the multispectral coding aperture. The coding aperture is divided into different regions and each region transmits the light of one wavelength, such that the spectral information of the target can be coded. By solving the inverse problem of sparse constraints, the multispectral information of the target is inverted. Herein, we analyzed the characteristics of this multispectral camera and developed a principle prototype to obtain experimental results.Jianwei WangYan ZhaoMDPI AGarticlemultispectral imaginglensless imagingcode apertureChemical technologyTP1-1185ENSensors, Vol 21, Iss 7757, p 7757 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	multispectral imaging lensless imaging code aperture Chemical technology TP1-1185
spellingShingle	multispectral imaging lensless imaging code aperture Chemical technology TP1-1185 Jianwei Wang Yan Zhao Lensless Multispectral Camera Based on a Coded Aperture Array
description	Multispectral imaging can be applied to water quality monitoring, medical diagnosis, and other applications, but the principle of multispectral imaging is different from the principle of hyper-spectral imaging. Multispectral imaging is generally achieved through filters, so multiple photos are required to obtain spectral information. Using multiple detectors to take pictures at the same time increases the complexity and cost of the system. This paper proposes a simple multispectral camera based on lensless imaging, which does not require multiple lenses. The core of the system is the multispectral coding aperture. The coding aperture is divided into different regions and each region transmits the light of one wavelength, such that the spectral information of the target can be coded. By solving the inverse problem of sparse constraints, the multispectral information of the target is inverted. Herein, we analyzed the characteristics of this multispectral camera and developed a principle prototype to obtain experimental results.
format	article
author	Jianwei Wang Yan Zhao
author_facet	Jianwei Wang Yan Zhao
author_sort	Jianwei Wang
title	Lensless Multispectral Camera Based on a Coded Aperture Array
title_short	Lensless Multispectral Camera Based on a Coded Aperture Array
title_full	Lensless Multispectral Camera Based on a Coded Aperture Array
title_fullStr	Lensless Multispectral Camera Based on a Coded Aperture Array
title_full_unstemmed	Lensless Multispectral Camera Based on a Coded Aperture Array
title_sort	lensless multispectral camera based on a coded aperture array
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/1c9003f302d7467cb0271eb0144bef33
work_keys_str_mv	AT jianweiwang lenslessmultispectralcamerabasedonacodedaperturearray AT yanzhao lenslessmultispectralcamerabasedonacodedaperturearray
_version_	1718410449506009088

Lensless Multispectral Camera Based on a Coded Aperture Array

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