I am using Sentinel-2 data for LU/LC classification. Sentinel2 have radiometric resolution of 12 bit. The downloaded data has been directly used in ENVI for classification purpose (not used any other software). The raw image in ENVI shows, the Maximum DN value in a scene are more than Ten thousand and Twenty two Thousand, etc. Where I am making the mistake. Kindly advice please.
I’m not sure how exactly ENVI handles the data, but if it is the same as in SNAP, a scaling factor is applied to the raw data so that its range range of values is displayed differently within the software (multiplied by 1000 in SNAP). Please have a look at page 3 of this tutorial: Export of products from SNAP
Ok I will look into it