THE MARKOVIAN APPROACH
Unwrapping the phase consists in computing for each pixel the correct order "l" which is the number of cycles of 2 pi of the complete phase.
We use regularization theory for solving this labelling problem :
The membrane model being the a priori model we use, the smoothness of the surface is given by :
and the distance to data by :
The unwrapping phase problem becomes a relaxation problem that we solve with a simulated annealing process...
An example of decreasing energy :