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Applied Optics

Applied Optics


  • Vol. 37, Iss. 23 — Aug. 10, 1998
  • pp: 5416–5420

Fast phase-unwrapping algorithm based on a gray-scale mask and flood fill

Anand Asundi and Zhou Wensen  »View Author Affiliations

Applied Optics, Vol. 37, Issue 23, pp. 5416-5420 (1998)

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Phase-unwrapping algorithms, an active and interesting subject in recent years, are important in a great number of measurement applications. Active research is being undertaken to develop reliable and high-speed procedures. The current process uses a gray-scale mask and the flood-fill concept from image processing for phase unwrapping. The algorithm unwraps phase from an area with higher reliability to one with lower reliability. In addition to robustness, the speed of the algorithm proposed is much faster than conventional routines. The experimental results of different algorithms are compared by analysis of a tooth plaster and a photoelastic specimen.

© 1998 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(100.2650) Image processing : Fringe analysis

Original Manuscript: October 1, 1997
Revised Manuscript: February 5, 1998
Published: August 10, 1998

Anand Asundi and Zhou Wensen, "Fast phase-unwrapping algorithm based on a gray-scale mask and flood fill," Appl. Opt. 37, 5416-5420 (1998)

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