I am trying to gap-fill Landsat 7 SLC-off images with open-source software as explained in the comment below this post.
I'm new to QGIS and have almost no knowledge with Python (I'm a GIS novice normally working with ArcGIS 10/Pro).
GdalTools is installed and checked and I am using the Band 1 mask (from USGS download) on Band 1. When I run FillNoData, it returns Band 1 with the gaps remaining.