Abstract
A modification of a previously published two-dimensional phase-retrieval algorithm based on the
sampling theorem [ Opt. Commun. 47, 380 ( 1983)] is
introduced. With an appropriate choice of the intermediate sampling grid, a significant reduction in
the number of computations is achieved, because an independent system of equations may be solved for
each line of the Fourier transform of the object. The results of computer simulations on real
objects are given. The algorithm converges rapidly.
© 1985 Optical Society of America
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