Program sfnonloc | Non-local (Bilateral) smoothing. 
[SYNOPSIS]
sfnonloc < inp.rsf > out.rsf ns= bx= gauss=n repeat=1 ax=
[COMMENTS]
Tomasi, C., and R. Manduchi, 1998, Bilateral filtering 
for gray and color images: Proceedings of the 1998 
IEEE International Conference on Computer Vision, 
IEEE, 836-846
[PARAMETERS]
float   | ax | = |   | 	Gaussian weight for the range distance 
float   | bx | = |   | 	exponential weight for the domain distance (different if gaussian)
bool    | gauss | =n |  [y/n] | 	if y, Gaussian weight, whereas Triangle weight 
int     | ns | = |   | 	spray radius 
int     | repeat | =1 |   | 	repeat filtering several times 
[DIRECTORY]
user/yliu
