I'm totally desparate. I realy need help.
I'm doing change detection analysis using landsat images (TM, ETM and OLI) and to normalize data in the preprocessing step I need to convert the Top of the Atmosphere reflectance image of the OLI image from 16-bit to 8-bit to be in the same radiometric resolution with the TM and ETM (ToA reflectance) images.
HOW TO DO IT WITH ENVI 5.3 ?????
Thank you.