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 :