Abstract
A new approach to locating gas and vapor plumes is proposed that is entirely passive. By modulating the transmission waveband of a narrow-band filter, an intensity modulation is established that allows regions of an image to be identified as containing a specific gas with absorption characteristics aligned with the filter. A system built from readily available components was constructed to identify regions of NO. Initial results show that this technique was able to distinguish an absorption cell containing NO gas in a test scene.
| Original language | English |
|---|---|
| Article number | 050501 |
| Number of pages | 2 |
| Journal | Optical Engineering |
| Volume | 51 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 4 May 2012 |
Bibliographical note
Benton, David M., "Technique for passive scene imaging of gas and vapor plumes using transmission-waveband modulation," Optical engineering, 51(5) 050501 (2012).Copyright 2012 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
http://dx.doi.org/10.1117/1.OE.51.5.050501
Keywords
- spectroscopy
- dielectric filters
- modulation
- image processing