Program sfmaskinv | Missing data interpolation using one or two prediction-error filters. 
[SYNOPSIS]
sfmaskinv < in.rsf > out.rsf mask=mask.rsf center= a= b= niter=80
[PARAMETERS]
ints    | a | = |   | 	first filter dimensions  [dim]
ints    | b | = |   | 	second filter dimensions  [dim]
ints    | center | = |   | 	filter center  [dim]
file    | mask | = |   | 	auxiliary input file name
int     | niter | =80 |   | 	number of iterations 
[DIRECTORY]
user/gee
