j2k_to_image(1) on Linux
The text 6d1aa53ee6ac, as Debian 7 (Wheezy) shipped it.
convert a J2K, JP2 or JPT file into a PGM, PPM, PNM, PGX or BMP file
Flags it lists
-
-ImgDir -
-OutFor -
-h -
-i -
-l -
-o -
-r