Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 2 of 2

Full-Text Articles in Entire DC Network

Identification And Detection Of Gaseous Effluents From Hyperspectral Imagery Using Invariant Algorithms, Erin M. O'Donnell, David W. Messinger, Carl Salvaggio, John Schott Aug 2004

Identification And Detection Of Gaseous Effluents From Hyperspectral Imagery Using Invariant Algorithms, Erin M. O'Donnell, David W. Messinger, Carl Salvaggio, John Schott

Articles

The ability to detect and identify effluent gases is, and will continue to be, of great importance. This would not only aid in the regulation of pollutants but also in treaty enforcement and monitoring the production of weapons. Considering these applications, finding a way to remotely investigate a gaseous emission is highly desirable. This research utilizes hyperspectral imagery in the infrared region of the electromagnetic spectrum to evaluate an invariant method of detecting and identifying gases within a scene. The image is evaluated on a pixel-by-pixel basis and is studied at the subpixel level. A library of target gas spectra …


Visual Plumes Mixing Zone Modeling Software, Walter E. Frick Jan 2004

Visual Plumes Mixing Zone Modeling Software, Walter E. Frick

United States Environmental Protection Agency: Publications

The US Environmental Protection Agency has a history of developing plume models and providing technical assistance. The Visual Plumes model (VP) is a recent addition to the public-domain models available on the EPA Center for Exposure Assessment Modeling (CEAM) web page. The Windows-based VP adapts, modifies, and enhances the earlier DOS-based PLUMES with a new interface, models, and capabilities. VP is a public platform for mixing zone models designed to encourage the continued improvement of plume theory and models by facilitating verification and inter-model comparison. Some examples are presented to illustrate VP’s new capabilities. One demonstrates its ability, for reasonably …