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Absolute phase unwrapping of a fringe pattern

Hi all,

I am looking for advice on what is the best technique for absolute phase unwrapping of a fringe pattern. As best I can tell the following tutorial only phase unwraps relatively meaning it doesn't take into account the 2 * pi jumps in the fringe pattern.

Working code / example link on how to accomplish the absolute phase unwrapping would be really appreciated

Thanks in advance