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Last Post 30 Sep 2015 04:49 PM by  anon
radiometric calibration for NDVI
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anon



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30 Sep 2015 04:49 PM
    To calculate the NDVI, I calibrate the level of radiance or reflectance level ?, because the values are different, you must perform calibration?

    MariM



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    01 Oct 2015 06:29 AM
    Typically, vegetation indices work best when you convert to surface reflectance. Radiometric Calibration will calculate either radiance or top-of-the-atmosphere (TOA) reflectance. If you plan on comparing different NDVI images (from different times) then an atmospheric correction using something like Quac or FLAASH would be best.
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