18 May 2013 Hyperspectral chemical plume quantification via background radiance estimation
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Existing chemical plume quantification algorithms assume that the off-plume radiance of a pixel containing the plume signal is unobservable. When the problem is limited to a single gas, the off-plume radiance may be estimated from the bands in which the gas absorption is nearly zero. It is then possible to compute the difference between the on- and off-plume radiances and solve for the plume strength from Beer's Law. The major advantage of this proposed method is that the gas strength can be resolved from the radiance difference so that the estimation error remains small for thick plumes.
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Sidi Niu, Sidi Niu, Steven E. Golowich, Steven E. Golowich, Vinay K. Ingle, Vinay K. Ingle, Dimitris G. Manolakis, Dimitris G. Manolakis, "Hyperspectral chemical plume quantification via background radiance estimation", Proc. SPIE 8743, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIX, 874316 (18 May 2013); doi: 10.1117/12.2016197; https://doi.org/10.1117/12.2016197

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