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Free Hyperspectral Image Processing  MicroImages Press Release 7 Aug 1998 MicroImages now provides hyperspectral image processing as part of the FREE TNTlite geospatial analysis system.  In this free product, you can analyze hyperspectral images of up to 614 by 512 pixels(for example, AVIRIS imagery) and any number of spectral bands.  The Hyperspectral Analysis process provides the following tools to combine spectral curves and build spectral libraries: average,resample, divide, subtract, add, maximum, minimum, and difference.

One of the visualization tools in the hyperspectral process steps through various combinations of bands to allow  interactive selection of RGB assignments

The editing operations available for spectral libraries include: set a value, add, subtract, multiply, interpolate, smooth, normalize,compute continuum, remove continuum, compute derivative, and binarize.

Two methods are provided for matching a selected spectrum with those in an established spectral library: Spectral Angle Mapper and Spectral FeatureFitting. A variety of calibration techniques are available so that the spectra determined from your imagery can be compared to standard spectral libraries.

These techniques include: Equal Area Normalization,Log Residuals, Additive Offset Calibration, and Flat Filed Correction.You can also classify hyperspectral images using the following algorithms:Spectral Angle Mapper, Cross Correlation, Linear Spectral Unmixing, and Matched Filtering.

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