title: Windowed phase unwrapping using a first-order dynamic system following iso-phase contours.
abstract: In this work, we show a windowed phase-unwrapping technique that uses a first-order dynamic system and scans the phase following its iso-phase contours. In previous works, we have shown that low-pass first-order dynamic systems are very robust and useful in phase-unwrapping problems. However, it is well known that all phase-unwrapping methods have a minimum signal-to-noise ratio that they tolerate. This paper shows that scanning the phase within local windows and using a path following strategy, the first-order unwrapping method increases its tolerance to noise. In this way, using the improved approach, we can unwrap phase maps where the basic dynamic phase-unwrapping system fails. Tests and results are given, as well as the source code in order to show the performance of the proposed method.
authors.affiliation: Centro de Investigaciones en Optica AC, Leon Guanajuato, Mexico. julio@cio.mx
authors.forename: Julio C
authors.initials: JC
authors.lastname: Estrada
authors.forename: Javier
authors.initials: J
authors.lastname: Vargas
authors.forename: J Mauricio
authors.initials: JM
authors.lastname: Flores-Moreno
authors.forename: J Antonio
authors.initials: JA
authors.lastname: Quiroga