I'm relatively new to RS, I've been using Landsat Collection 2 Tier 2 data for my land use maps in ArcGIS Desktop. The problem is that my AOT has scarce rural built up area, due to which other barren areas (particularly close to glacier regions) keep getting misclassified as built up. I'm using the 6-4-2 band combination, and planetscope imagery (high res imagery for ancillary data)
How do I correct this? I have used Interactive classification feature a lot to correct the classification but a lot of areas still end up getting misclassified. I have used a hell lot of training areas in the regions that have misclassification but it's still not enough!
The main important land class is built up (only 0.3-2%) of the total area. Should I try object oriented classification? If yes, how do I do it in ArcGIS Desktop?