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Opt Lett. 1989 Oct 15;14(20):1107-9.

Direct phase estimation from phase differences using fast elliptic partial differential equation solvers.

Abstract

Obtaining robust phase estimates from phase differences is a problem common to several areas of importance to the optics and signal-processing communities. Specific areas of application include speckle imaging and interferometry, adaptive optics, compensated imaging, and coherent imaging such as synthetic-aperture radar. We derive in a concise form the equations describing the phase-estimation problem, relate these equations to the general form of elliptic partial differential equations, and illustrate results of reconstructions on large M by N grids, using existing, published, and readily available FORTRAN subroutines.

PMID:
19753070
[PubMed]
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