My assignement is to do a vegetation analysis on multi-temporal images Landsat7.I know that I have to do atmospheric correction and convert first dn to radiance and then radiance to reflectance, and I did that.I tried to do pansharpening with images that are atmosphericaly corrected and something gone wrong. What should I do first? Do i have to do first atmospheric correction and then to do the pansharpening ? Or is there a way to do atmospheric correction on pansherpened images?I am working in Erdas Imagine.
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