I am having a similar issue. I georeferenced a scanned map and converted it to grayscale so that I could place it into two color categories.
What steps did you take to correct the raster format? I am able to vectorize but not edit the raster. Any tips?
Black-and-white imagery is 1-bit (2^^1). Two bits would allow for four states (2^^2). Some gray-scale imagery may be 4-bits (2^^4 = 16 values), and both 4-bit and 8-bit imagery could be colormapped.
I segmented the grayscale into a 2 color image. I was able to batch vectorize, but unable to clean up the raster before vectorizing. Do you all know why this is happening and how I can fix it?
I am able to start the editing and raster cleanup session, but when I try to erase the imperfections using the raster painting toolbar, nothing erases. Any idea why?