ABSTRACT
We present a variational method for recovering the phase term from the information obtained from phase-shifting methods. First we introduce the new method based on a variational approach and then describe the numerical solution of the proposed cost function, which results in a simple algorithm. Numerical experiments with both synthetic and real fringe patterns show the accuracy and simplicity of the resulting algorithm.
Disclosure statement
No potential conflict of interest was reported by the authors.
ORCID
Ricardo Legarda-Saenz http://orcid.org/0000-0003-4875-324XAlejandro Téllez Quiñones http://orcid.org/0000-0001-6712-0582Carlos Brito-Loeza http://orcid.org/0000-0003-2970-2113Arturo Espinosa-Romero http://orcid.org/0000-0002-5153-2950