Fringe parameters are the complex visibility, the squared visibility amplitude, and the total count rate. These can be computed from bincounts using the functions fringevis , fringevissq , and fringenphot . v=fringevis(bincounts(1,*,*,*)) . ... Instead of computing the modulus of the complex visibility, we use a different estimator for the squared amplitude. ... I have verified with simulated fringe frames that this procedure results in the correct squared visibility amplitudes. ...