Convert a PNM image to a compressed FIASCO file. More information: https://netpbm.sourceforge.net/doc/pnmtofiasco.html.
pnmtofiasco path/to/file.pnm > path/to/file.fiasco
pnmtofiasco --image-name "img[01-09+1].pnm" > path/to/file.fiasco
pnmtofiasco --quality quality_level path/to/file.pnm > path/to/file.fiasco
pnmtofiasco --config path/to/fiascorc path/to/file.pnm > path/to/file.fiasco