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Proceedings Paper

Time-resolved thermal infrared multispectral imaging of gases and minerals
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Paper Abstract

For years, scientists have used thermal broadband cameras to perform target characterization in the longwave (LWIR) and midwave (MWIR) infrared spectral bands. The analysis of broadband imaging sequences typically provides energy, morphological and/or spatiotemporal information. However, there is very little information about the chemical nature of the investigated targets when using such systems due to the lack of spectral content in the images. In order to improve the outcomes of these studies, Telops has developed dynamic multispectral imaging systems which allow synchronized acquisition on 8 channels, at a high frame rate, using a motorized filter wheel. An overview of the technology is presented in this work as well as results from measurements of solvent vapors and minerals. Time-resolved multispectral imaging carried out with the Telops system illustrates the benefits of spectral information obtained at a high frame rate when facing situations involving dynamic events such as gas cloud dispersion. Comparison of the results obtained using the information from the different acquisition channels with the corresponding broadband infrared images illustrates the selectivity enabled by multispectral imaging for characterization of gas and solid targets.

Paper Details

Date Published: 7 October 2014
PDF: 10 pages
Proc. SPIE 9249, Electro-Optical and Infrared Systems: Technology and Applications XI, 92490U (7 October 2014); doi: 10.1117/12.2064611
Show Author Affiliations
Marc-André Gagnon, Telops (Canada)
Karl-Alexandre Jahjah, Telops (Canada)
Frédérick Marcotte, Telops (Canada)
Pierre Tremblay, Telops (Canada)
Vincent Farley, Telops (Canada)
Éric Guyot, Telops France (France)
Martin Chamberland, Telops (Canada)

Published in SPIE Proceedings Vol. 9249:
Electro-Optical and Infrared Systems: Technology and Applications XI
David A. Huckridge; Reinhard Ebert, Editor(s)

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