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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 35, Iss. 28 — Oct. 1, 1996
  • pp: 5642–5649

Window function influence on phase error in phase-shifting algorithms

Joanna Schmit and Katherine Creath  »View Author Affiliations


Applied Optics, Vol. 35, Issue 28, pp. 5642-5649 (1996)
http://dx.doi.org/10.1364/AO.35.005642


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Abstract

We present five different eight-point phase-shifting algorithms, each with a different window function. The window function plays a crucial role in determining the phase (wavefront) because it significantly influences phase error. We begin with a simple eight-point algorithm that uses a rectangular window function. We then present alternative algorithms with triangular and bell-shaped window functions that were derived from a new error-reducing multiple-averaging technique. The algorithms with simple (rectangular and triangular) window functions show a large phase error, whereas the algorithms with bell-shaped window functions are considerably less sensitive to different phase-error sources. We demonstrate that the shape of the window function significantly influences phase error.

© 1996 Optical Society of America

History
Original Manuscript: August 3, 1995
Revised Manuscript: March 6, 1996
Published: October 1, 1996

Citation
Joanna Schmit and Katherine Creath, "Window function influence on phase error in phase-shifting algorithms," Appl. Opt. 35, 5642-5649 (1996)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-35-28-5642

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