Apply Gain to all bands? - NV5 Geospatial - Help Forums

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Last Post 23 Apr 2013 08:17 AM by anon

Apply Gain to all bands?

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anon

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23 Apr 2013 08:17 AM
Hi There, I'm a relatively new ENVI user so pardon my unfamiliarity with the user interface. I'm trying to calculate albedo from reflectance imagery. My approach is to use Apply Gain and Offset utility in Radiometric Correction. When I open the utility, I can manually enter irradiance values for each band. However, there are 360 bands and I would prefer to import the 360 irradiance values as a vector in a text file (or csv). Is there a way to do this ENVI? Thanks, E.

MariM

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Posts:2396
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23 Apr 2013 12:14 PM
You can use Edit ENVI Header->Edit Attributes->Gains and import a column of gains that match your bands. Save the header and when you go to use the Apply Gain/Offset tool, the gains and offsets will be automatically populated.

Deleted User

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25 Apr 2013 11:45 AM
Thank you, Mari. It was slightly different than what you described above in ENVI5 but I found the solution: Toolbox -> Raster Management -> Edit ENVI Header -> Select Input File -> OK Edit Attributes -> Gains ... -> Import ASCII E.

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