infile, f, a, "", , , 	Input file name
outfile, f, a, "", , , 	Output file name

length, i, h, 15, 3, ,	Length of each stitch (pixels)
width, i, h, 1, 1, ,	Number of stitches used to determine the background
delta, r, h, 0.1, 0., ,	Discrimination level for bad pixels
npbg, i, h, 3, 1, ,	Number of pixels used to determine background in each stitch

mode, s, h, "al"