Program sfepfws | Edge preserving (smoothing) filter by window selection 
[SYNOPSIS]
sfepfws < in.rsf > out.rsf nfw=5 order=nfw-1 filter=
[PARAMETERS]
string  | filter | = |   | 	filter: mean,median,poly,fir 
int     | nfw | =5 |   | 	window size 
int     | order | =nfw-1 |   | 	filter order (<= nfw, only for polynomial and fir filters) 
[DIRECTORY]
user/chen
