Changes between Version 4 and Version 5 of Processing/RadiometricCalibration


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Timestamp:
Oct 4, 2007 1:08:46 PM (11 years ago)
Author:
mggr
Comment:

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  • Processing/RadiometricCalibration

    v4 v5  
    2323   1. Using some smoothing, find the brightest columns in the image (this will be near the centre point and will be where the ATM scan head is closest to perpendicular to the light source.
    2424   1. Take the average of the column to get the typical value (mode best for dark current, mean best for lit value)
     25 1. For channel 11, do nothing?
    2526
    2627For channels 9 and 10 (SW IR), there is a fudge factor - apparently the ATM instrument records lower values when in the air than on the ground.  One should process a flight line to get some idea of these, but the dark current is normally ~100-300 lower when flying.  '''does this apply to the max value too?'''