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  1. gisareafor
    Hi all As you know atmospheric effect cuses real Dn values to be reduced. So if we apply an atmospheric correction method like quic correction or log residual (using envi software) resulted dn valuse should be in original range. But what is the problem? for example after applying quac method,dn values range grow to 10 or 20 time grater than original value. What is the problem?Do you know? Than you
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