Yes, correctly.
It depends on the quality of your interferogram and on the pattern noisy areas if filtering prior umwrapping is recommend.
One way to do it is suggested here: Filter out low coherence pixels before phase unwrapping
Yes, correctly.
It depends on the quality of your interferogram and on the pattern noisy areas if filtering prior umwrapping is recommend.
One way to do it is suggested here: Filter out low coherence pixels before phase unwrapping