Program sfepfbil | Bilateral filter 
[SYNOPSIS]
sfepfbil < in.rsf > out.rsf twod=n sigmar=1.0 sigmad=1.0
[PARAMETERS]
float   | sigmad | =1.0 |   | 	sigma for domain filter 
float   | sigmar | =1.0 |   | 	sigma for range filter 
bool    | twod | =n |  [y/n] | 	y, 2D smoothing 
[DIRECTORY]
user/chen
