Developing a portable gas imaging camera using highly tunable active-illumination and computer vision

Nutt, K. J. , Hempler, N., Maker, G. T., Malcolm, G. P.A., Padgett, M. J. and Gibson, G. M. (2020) Developing a portable gas imaging camera using highly tunable active-illumination and computer vision. Optics Express, 28(13), pp. 18566-18576. (doi: 10.1364/OE.389634)

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Abstract

We have developed a portable gas imaging camera for identifying methane leaks in real-time. The camera uses active illumination from distributed feedback InGaAs laser diodes tuned to the 1653 nm methane absorption band. An InGaAs focal plane sensor array images the active illumination. The lasers are driven off resonance every alternate frame so that computer vision can extract the gas data. A colour image is captured simultaneously and the data is superimposed to guide the operator. Image stabilisation has been employed to allow detection with a moving camera, successfully imaging leaks from mains pressure gas supplies at a range of up to 3 m and flow rates as low as 0.05 L min−1.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Gibson, Dr Graham and Nutt, Kyle and Padgett, Professor Miles
Authors: Nutt, K. J., Hempler, N., Maker, G. T., Malcolm, G. P.A., Padgett, M. J., and Gibson, G. M.
College/School:College of Science and Engineering
College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optics Express
Publisher:Optical Society of America
ISSN:1094-4087
ISSN (Online):1094-4087
Published Online:08 June 2020
Copyright Holders:Copyright © 2020 The Authors
First Published:First published in Optics Express 28(13):18566-18576
Publisher Policy:Reproduced under a Creative Commons licence

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
190841UK Quantum Technology Hub in Enhanced Quantum ImagingMiles PadgettEngineering and Physical Sciences Research Council (EPSRC)EP/M01326X/1P&S - Physics & Astronomy