Phase demodulation method from a single fringe pattern based on correlation with a polynomial form.
The method presented extracts the demodulated phase from only one fringe pattern. Locally, this method approaches the fringe pattern morphology with the help of a mathematical model. The degree of similarity between the mathematical model and the real fringe is estimated by minimizing a correlation function. To use an optimization process, we have chosen a polynomial form such as a mathematical model. However, the use of a polynomial form induces an identification procedure with the purpose of retrieving the demodulated phase. This method, polynomial modulated phase correlation, is tested on several examples. Its performance, in terms of speed and precision, is presented on very noised fringe patterns.
Robin
Eric
E
Université de Poitiers, Laboratoire de Mécanique des Solides, UMR 6610, Téléport 2, Boulevard Pierre et Marie Curie, Boîte Postale 30179, 86962 Futuroscope Chasseneuil Cedex, France.
Valle
Valéry
V
Brémand
Fabrice
F