Send to

Choose Destination
See comment in PubMed Commons below
Opt Lett. 2004 Jul 15;29(14):1671-3.

Advanced iterative algorithm for phase extraction of randomly phase-shifted interferograms.

Author information

  • 1Department of Mechanical Engineering, The Catholic University of America, Washington, DC 20064, USA.


An advanced random phase-shifting algorithm to extract phase distributions from randomly phase-shifted interferograms is proposed. The algorithm is based on a least-squares iterative procedure, but it copes with the limitation of the existing iterative algorithms by separating a frame-to-frame iteration from a pixel-to-pixel iteration. The algorithm provides stable convergence and accurate phase extraction with as few as three interferograms, even when the phase shifts are completely random. The algorithm is simple, fast, and fully automatic. A computer simulation is conducted to prove the concept.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Optical Society of America
    Loading ...
    Support Center