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Last Post 07 Mar 2011 10:02 PM by  anon
QUAC To reflectance
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anon



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07 Mar 2011 10:02 PM
    Hi everybody, Currently i am trying to convert World view 2 data into reflectance using method available from envi. And Quac is giving me best result so far. However, reflectance value from the converted image is up 3000. I dont know what unit is it. Is there any method to rescale the data to convensional reflectance value of % Highly appreciate is someone can help me. Thanks

    MariM



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    08 Mar 2011 07:20 AM
    The ENVI help for QUAC states: QUAC creates an image of retrieved surface reflectance, scaled into two-byte signed integers using a reflectance scale factor of 10,000. So you can divide the data by the scale factor to get to floating point reflectance values between 0-1.0.
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