Time-resolved thermal infrared multispectral imaging of gases and minerals

Marc-André Gagnon; Karl-Alexandre Jahjah; Frédérick Marcotte; Pierre Tremblay; Vincent Farley; Éric Guyot; Martin Chamberland

doi:10.1117/12.2064611

7 October 2014 Time-resolved thermal infrared multispectral imaging of gases and minerals

Marc-André Gagnon, Karl-Alexandre Jahjah, Frédérick Marcotte, Pierre Tremblay, Vincent Farley, Éric Guyot, Martin Chamberland

Author Affiliations +

Proceedings Volume 9249, Electro-Optical and Infrared Systems: Technology and Applications XI; 92490U (2014) https://doi.org/10.1117/12.2064611
Event: SPIE Security + Defence, 2014, Amsterdam, Netherlands

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.

Citation Download Citation

Marc-André Gagnon, Karl-Alexandre Jahjah, Frédérick Marcotte, Pierre Tremblay, Vincent Farley, Éric Guyot, and Martin Chamberland "Time-resolved thermal infrared multispectral imaging of gases and minerals", Proc. SPIE 9249, Electro-Optical and Infrared Systems: Technology and Applications XI, 92490U (7 October 2014); https://doi.org/10.1117/12.2064611

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available