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Interpretation of hyperspectral remote-sensing imagery by spectrum matching and look-up tables

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https://ir.library.oregonstate.edu/concern/articles/rf55z9155

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Abstract
  • A spectrum-matching and look-up-table (LUT) methodology has been developed and evaluated to extract environmental information from remotely sensed hyperspectral imagery. The LUT methodology works as follows. First, a database of remote-sensing reflectance (R[subscript]rs) spectra corresponding to various water depths, bottom reflectance spectra, and water-column inherent optical properties (IOPs) is constructed using a special version of the HydroLight radiative transfer numerical model. Second, the measured Rrs spectrum for a particular image pixel is compared with each spectrum in the database, and the closest match to the image spectrum is found using a least-squares minimization. The environmental conditions in nature are then assumed to be the same as the input conditions that generated the closest matching HydroLight-generated database spectrum. The LUT methodology has been evaluated by application to an Ocean Portable Hyperspectral Imaging Low-Light Spectrometer image acquired near Lee Stocking Island, Bahamas, on 17 May 2000. The LUT-retrieved bottom depths were on average within 5% and 0.5 m of independently obtained acoustic depths. The LUT-retrieved bottom classification was in qualitative agreement with diver and video spot classification of bottom types, and the LUT-retrieved IOPs were consistent with IOPs measured at nearby times and locations.
  • This is the publisher's version of record. The original submission is copyrighted by Optical Society of America and can be found here: http://www.opticsinfobase.org/ao/home.cfm
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  • Mobley, C. D., Sundman, L. K., Davis, C. O., Bowles, J. H., Downes, T. V., Leathers, R. A., & Montes, M. J. ... (2005, June 10). Interpretation of hyperspectral remote-sensing imagery by spectrum matching and look-up tables. Applied Optics, 44(17), 3576-3592. doi:10.1364/AO.44.003576
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  • 44
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  • 17
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  • This study was supported by the Environmental Optics Program of the U.S. Office of Naval Research (ONR) under contracts N00014-00-D-0161/0001 and N00014-04-C-0218 to C. D. Mobley.
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