A new method recovers phase difference of interfering wavefronts from a pattern of interference fringes, avoiding discontinuity problem. The continuous phase is a solution of the first order differential equation of the interferogram function computed from the fringe intensity profile selected along the pathway over the interferogram.
@article{arxiv.2404.14437,
title = {A direct method of continuous unwrapping the phase from an interferogram image},
author = {V. Berejnov and B. Y. Rubinstein},
journal= {arXiv preprint arXiv:2404.14437},
year = {2024}
}