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Automatic continuum analysis of reflectance spectraA continuum algorithm based on a Segmented Upper Hull method (SUH) is described. An upper hull is performed on segments of a spectrum defined by local minima and maxima. The segments making a complete spectrum are then combined. The definition of the upper hull allows the continuum to be both concave and/or convex, adapting to the shape of the spectrum. The method performs multiple passes on a spectrum by segmenting each local maximum to minimum and performing an upper hull. The algorithm naturally adapts to the widths of absorption features, so that all features are found, including the nature of doublets, triplets, etc. The algorithm is also reasonably fast on common minicomputers so that it might be applied to the large data sets from imaging spectrometers.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Clark, Roger N.
(Geological Survey Denver, CO, United States)
King, Trude V. V.
(Geological Survey Denver, CO, United States)
Date Acquired
September 5, 2013
Publication Date
August 15, 1987
Publication Information
Publication: JPL Proceedings of the 3rd Airborne Imaging Spectrometer Data Analysis Workshop
Subject Category
Earth Resources And Remote Sensing
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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