title: Path-independent phase unwrapping of subsampled phase maps.
abstract: A technique for unwrapping subsampled phase maps is presented. The subsampled phase map is obtained by standard phase-shifting methods that use subsampled interferograms. The technique then estimates the wrapped local curvature of the subsampled phase map. This local curvature is then low-pass filtered with a free-boundary low-pass filter to reduce phase noise. Finally the estimated local curvature of the wave front is integrated by the use of a least-squares technique to obtain the searched continuous wave front.
authors.forename: M
authors.initials: M
authors.lastname: Servin
authors.forename: D
authors.initials: D
authors.lastname: Malacara
authors.forename: F J
authors.initials: FJ
authors.lastname: Cuevas