I want to work with landsat 7 images for land cover and NDVI evaluation. There are strips in the landsat images, and I don't know how to remote them. I have learned methods for gapfill but I don't know how to work with. I also used Erdas 2011 (focal analysis) for the processing but I see no result. I have also a sort of gap mask download with my landsat 7 images but I don't know how to use it.
How should I deal with the striping?