Gas visualization of industrial hydrocarbon emissions

Research output: Contribution to journalArticle


Gases leaking from a polyethene plant and a cracker plant were visualized with the gas-correlation imaging technique. Ethene escaping from flares due to incomplete or erratic combustion was monitored. A leakage at a high-pressure reactor tank could be found and visualized by scanning the camera system over the industrial site. The image processing methods rely on the information from three simultaneously captured images. A direct and a gas-filtered infrared image are recorded with a split-mirror telescope through a joint band-pass filter. The resulting path-integrated gas concentration image, derived from the two infrared images, is combined with a visible image of the scene. The gas-correlation technique also has the potential to estimate the flux in the gas plume by combining a wind vector map, derived by cross-correlating the images in time, with a calibrated gas path-integrated concentration image. The principles of the technique are outlined and its potential discussed.


Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics


  • Imaging systems : Infrared imaging, Remote sensing and sensors : Air pollution monitoring, Spectroscopy : Spectroscopy, infrared, Detectors : Infrared
Original languageEnglish
Pages (from-to)1443-1451
JournalOptics Express
Issue number7
Publication statusPublished - 2004
Publication categoryResearch

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