FLAASH - which band centres/widths are loaded for the CASI

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Last Post 27 Apr 2007 06:35 AM by anon

FLAASH - which band centres/widths are loaded for the CASI setting / can you change them?

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anon

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27 Apr 2007 06:35 AM
I am trying to use the FLAASH add-on to ENVI for correction of some airborne hyperspectral CASI images. The CASI sensor's bands are not fixed and it is unlikley any two users will have identical band settings. Can anyone please tell me: - which band centres and widths are supported by the current sensor type - hyperspectral "CASI" setting? - can I input my own spectral library of CASI bandpass filters to use instead? Stuart

MariM

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27 Apr 2007 06:35 AM
Actually, setting the sensor to 'CASI' doesn't really set very many parameters in FLAASH. All setting the sensor to 'CASI' does is set a default spectrograph file used for wavelength correction, which you can always supply yourself. There is not a band pass filter function file for CASI. This information is defined in the header file of the image as wavelength (centers) and FWHM. So, this is always user-defined. I hope this helps. -Mari

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