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 Padgett, Professor Miles and Nutt, Kyle |
| 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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