GVFC Generalized Gradient Vector Flow (C mex version)
[u,v] = GVFC(f, mu, ITER)
recommended value for mu to get stable solution: mu in [0, 0.2]
Chenyang Xu and Jerry L. Prince
Copyright (c) 1996-99 by Chenyang Xu and Jerry L. Prince
Image Analysis and Communications Lab, Johns Hopkins University
Psychtoolbox/PsychOpenGL/PsychGLSLShaders/gvfc.m