Airborne hyperspectral systems that span the visible near-infrared to short wave-infrared (VNIR-SWIR) wavelength range acquire a rich data cube that can be used for many
applications. A VNIR-SWIR data cube can be effectively used for evaluating environmental, facility, and geologic conditions. The distribution and vigor of vegetation; characteristics of soils (including the surface distribution of clays, iron, and other minerals); water conditions, and stratigraphy can be derived from the data cube. Integration of enhanced images with DEM's improves mapping for natural hazards and structural geology. The dataset can be effectively classified for land use and to support change detection. Recently we completed a new VNIRSWIR spectral library for detecting oil-impacted surfaces (including onshore oil seeps). A cooperative R&D effort coordinated by The Geosat Committee, Inc. and sponsored by progressive petroleum companies enabled the library to be built. With this library, VNIR-SWIR hyperspectral technology can be more effectively applied to detect oil-impacted soils and surfaces within industrial sites and brownfields. The most significant issue facing broader use of the technology and integration of images and derived products with GIS is the cartographic error associated with line-scanner technology. Acquiring VNIR-SWIR hyperspectral datacubes reduces the risk for management because the data can be effectively used to achieve several different business objectives.
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GIS Weekly Magazine
Susan Smith
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Look for the next issue of GIS Weekly Magazine on May 28, 2012.
Each GISWeekly Review delivers to its readers news concerning the latest developments in the GIS industry, along with a selection of other articles that we feel you might find interesting. |
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