I have a bunch of topographic maps in the format of .map files and 4000x4000px png files.I would like to view them as a slippy map and be able to select an area and export that as one big image. I am wondering what my options are. QGis would be nice, or Mobile Atlas Creator, which supports local tiles as source for the following formats: OSMTracker, AndNav, BackCountry Navigator, Maverick and OSMAND.
It would be nice if at some time I could convert them to something more standard, like 256px tiles under a coordinate dir structure, or mbtiles so I could view it with tilemill or their server or map on a stick software.
So what are my options to getting these files to open in some slippy map way and being able to export specific areas as images.
I don't care what formats I have to convert to or which software/servers I have to install.