3D infrared thermospectroscopic imaging

Abstract This work reports a multispectral tomography technique in transmission mode (called 3DITI for 3D Infrared Thermospectroscopic Imaging) based on a middle wavelength infrared (MWIR) focal plane array. This technique relies on an MWIR camera (1.5 to 5.5 μm) used in combination with a multispec...

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Autores principales:	A. Aouali, S. Chevalier, A. Sommier, E. Abisset-Chavanne, J.-C. Batsale, C. Pradere
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c1bf385ad7284705a10f464b4f60f9cb
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spelling	oai:doaj.org-article:c1bf385ad7284705a10f464b4f60f9cb2021-12-02T13:58:17Z3D infrared thermospectroscopic imaging10.1038/s41598-020-78887-x2045-2322https://doaj.org/article/c1bf385ad7284705a10f464b4f60f9cb2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78887-xhttps://doaj.org/toc/2045-2322Abstract This work reports a multispectral tomography technique in transmission mode (called 3DITI for 3D Infrared Thermospectroscopic Imaging) based on a middle wavelength infrared (MWIR) focal plane array. This technique relies on an MWIR camera (1.5 to 5.5 μm) used in combination with a multispectral IR monochromator (400 nm to 20 μm), and a sample mounted on a rotary stage for the measurement of its transmittance at several angular positions. Based on the projections expressed in terms of a sinogram, spatial three-dimensional (3D) cubes (proper emission and absorptivity) are reconstructed using a back-projection method based on inverse Radon transform. As a validation case, IR absorptivity tomography of a reflective metallic screw is performed within a very short time, i.e., shorter than 1 min, to monitor 72 angular positions of the sample. Then, the absorptivity and proper emission tomographies of a butane-propane-air burner flame and microfluidic perfluoroalkoxy (PFA) tubing filled with water and ethanol are obtained. These unique data evidence that 3D thermo-chemical information in complex semi-transparent media can be obtained using the proposed 3DITI method. Moreover, this measurement technique presents new problems in the acquisition, storage and processing of big data. In fact, the quantity of reconstructed data can reach several TB (a tomographic sample cube of 1.5 × 1.5 × 3 cm3 is composed of more than 1 million pixels per wavelength).A. AoualiS. ChevalierA. SommierE. Abisset-ChavanneJ.-C. BatsaleC. PradereNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-10 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q A. Aouali S. Chevalier A. Sommier E. Abisset-Chavanne J.-C. Batsale C. Pradere 3D infrared thermospectroscopic imaging
description	Abstract This work reports a multispectral tomography technique in transmission mode (called 3DITI for 3D Infrared Thermospectroscopic Imaging) based on a middle wavelength infrared (MWIR) focal plane array. This technique relies on an MWIR camera (1.5 to 5.5 μm) used in combination with a multispectral IR monochromator (400 nm to 20 μm), and a sample mounted on a rotary stage for the measurement of its transmittance at several angular positions. Based on the projections expressed in terms of a sinogram, spatial three-dimensional (3D) cubes (proper emission and absorptivity) are reconstructed using a back-projection method based on inverse Radon transform. As a validation case, IR absorptivity tomography of a reflective metallic screw is performed within a very short time, i.e., shorter than 1 min, to monitor 72 angular positions of the sample. Then, the absorptivity and proper emission tomographies of a butane-propane-air burner flame and microfluidic perfluoroalkoxy (PFA) tubing filled with water and ethanol are obtained. These unique data evidence that 3D thermo-chemical information in complex semi-transparent media can be obtained using the proposed 3DITI method. Moreover, this measurement technique presents new problems in the acquisition, storage and processing of big data. In fact, the quantity of reconstructed data can reach several TB (a tomographic sample cube of 1.5 × 1.5 × 3 cm3 is composed of more than 1 million pixels per wavelength).
format	article
author	A. Aouali S. Chevalier A. Sommier E. Abisset-Chavanne J.-C. Batsale C. Pradere
author_facet	A. Aouali S. Chevalier A. Sommier E. Abisset-Chavanne J.-C. Batsale C. Pradere
author_sort	A. Aouali
title	3D infrared thermospectroscopic imaging
title_short	3D infrared thermospectroscopic imaging
title_full	3D infrared thermospectroscopic imaging
title_fullStr	3D infrared thermospectroscopic imaging
title_full_unstemmed	3D infrared thermospectroscopic imaging
title_sort	3d infrared thermospectroscopic imaging
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/c1bf385ad7284705a10f464b4f60f9cb
work_keys_str_mv	AT aaouali 3dinfraredthermospectroscopicimaging AT schevalier 3dinfraredthermospectroscopicimaging AT asommier 3dinfraredthermospectroscopicimaging AT eabissetchavanne 3dinfraredthermospectroscopicimaging AT jcbatsale 3dinfraredthermospectroscopicimaging AT cpradere 3dinfraredthermospectroscopicimaging
_version_	1718392226744107008

3D infrared thermospectroscopic imaging

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