adel.naseri Posted March 20, 2016 Report Share Posted March 20, 2016 hello i performed QUAC on an aster data and when i divided 10000 in each band, my output becomes perfectly black. please help Quote Link to comment Share on other sites More sharing options...
Lurker Posted March 21, 2016 Report Share Posted March 21, 2016 you need to explain your problem in detail, and post some picture to help us understand the exact problem 1 Quote Link to comment Share on other sites More sharing options...
EGYXee Posted March 21, 2016 Report Share Posted March 21, 2016 is your data in scaled spectral reflectance? what software do you use? My guesses would be; either 10000 is very large value to divide the bands by, or you have a scaling issue (you need to stretch the data in the resulted bands)! Quote Link to comment Share on other sites More sharing options...
adel.naseri Posted March 21, 2016 Author Report Share Posted March 21, 2016 thank's my dears for your help... my data is aster(bands 1 to 9)...i layer stacked and resampling it an performed quick atmospheric correction. you know that QUAC creates a surface reflectance image, scaled into two-byte unsigned integers using a reflectance scale factor of 10,000. now i want to change this scale factor to 1, so that, it's spectral profile to be comparable with The spectral curves that available in spectral library which my project demands that. i use ENVI 5.3 Quote Link to comment Share on other sites More sharing options...
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