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Proceedings Paper

Fast calculation of phase in spatial n-point phase-shifting techniques
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Paper Abstract

The n-point technique (also called the spatial carrier phase-shifting technique) is one of a few fringe pattern analysis techniques. We present modified algorithms for the n-point technique from which the phase modulo 2(pi) can be calculated in a much shorter time versus conventional algorithms. The algorithms are based on spatial synchronous detection techniques, and by analogy to those techniques, the modified algorithms are named low-pass algorithms, as opposed to the convention 'high-pass' algorithms in the n-point technique.

Paper Details

Date Published: 14 June 1995
PDF: 10 pages
Proc. SPIE 2544, Interferometry VII: Techniques and Analysis, (14 June 1995); doi: 10.1117/12.211855
Show Author Affiliations
Joanna Schmit, Optical Sciences Ctr./Univ. of Arizona (United States)
Katherine Creath, Optical Sciences Ctr./Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 2544:
Interferometry VII: Techniques and Analysis
Malgorzata Kujawinska; Ryszard J. Pryputniewicz; Mitsuo Takeda, Editor(s)

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