Synopsis
		sfpwcascade < inp.rsf dip=dip.rsf > out.rsf verb=n eps=0.01 edge=n order=1 rect=0 pclip=50. cycle=1

Parameters
		int cycle=1 number of cycles   file dip= auxiliary input file name   bool edge=n [y/n] preserve edges   float eps=0.01 regularization   int order=1 accuracy order   float pclip=50. percentage clip for the gradient   int rect=0 smoothing radius   bool verb=n [y/n] verbosity